/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/array-tiling/skipped.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 09:35:10,787 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 09:35:10,791 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 09:35:10,833 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 09:35:10,833 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 09:35:10,835 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 09:35:10,838 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 09:35:10,841 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 09:35:10,844 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 09:35:10,845 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 09:35:10,847 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 09:35:10,849 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 09:35:10,850 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 09:35:10,852 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 09:35:10,853 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 09:35:10,855 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 09:35:10,857 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 09:35:10,858 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 09:35:10,861 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 09:35:10,864 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 09:35:10,867 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 09:35:10,875 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 09:35:10,878 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 09:35:10,882 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 09:35:10,904 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 09:35:10,905 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 09:35:10,908 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 09:35:10,910 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 09:35:10,911 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 09:35:10,916 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 09:35:10,916 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 09:35:10,918 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 09:35:10,919 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 09:35:10,923 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 09:35:10,924 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 09:35:10,925 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 09:35:10,927 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 09:35:10,927 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 09:35:10,928 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 09:35:10,930 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 09:35:10,932 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 09:35:10,934 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 09:35:11,002 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 09:35:11,003 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 09:35:11,005 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 09:35:11,005 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 09:35:11,006 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 09:35:11,006 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 09:35:11,006 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 09:35:11,006 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 09:35:11,007 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 09:35:11,007 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 09:35:11,007 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 09:35:11,007 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 09:35:11,008 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 09:35:11,008 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 09:35:11,008 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 09:35:11,008 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 09:35:11,009 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 09:35:11,009 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 09:35:11,009 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 09:35:11,009 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 09:35:11,010 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 09:35:11,010 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 09:35:11,010 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 09:35:11,010 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 09:35:11,011 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 09:35:11,011 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 09:35:11,011 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 09:35:11,011 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 09:35:11,012 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 09:35:11,012 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 09:35:11,467 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 09:35:11,497 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 09:35:11,501 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 09:35:11,503 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 09:35:11,505 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 09:35:11,509 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/skipped.c [2020-10-28 09:35:11,626 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7ce9544a2/48f4d17cf100422db7a7d714a80bd4f1/FLAGe98035811 [2020-10-28 09:35:12,403 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 09:35:12,405 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-tiling/skipped.c [2020-10-28 09:35:12,414 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7ce9544a2/48f4d17cf100422db7a7d714a80bd4f1/FLAGe98035811 [2020-10-28 09:35:12,751 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7ce9544a2/48f4d17cf100422db7a7d714a80bd4f1 [2020-10-28 09:35:12,761 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 09:35:12,770 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 09:35:12,773 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 09:35:12,773 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 09:35:12,778 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 09:35:12,779 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:35:12" (1/1) ... [2020-10-28 09:35:12,784 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30fc6e30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:35:12, skipping insertion in model container [2020-10-28 09:35:12,784 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:35:12" (1/1) ... [2020-10-28 09:35:12,793 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 09:35:12,817 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 09:35:13,000 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 09:35:13,009 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 09:35:13,037 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 09:35:13,054 INFO L208 MainTranslator]: Completed translation [2020-10-28 09:35:13,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:35:13 WrapperNode [2020-10-28 09:35:13,055 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 09:35:13,056 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 09:35:13,056 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 09:35:13,057 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 09:35:13,070 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:35:13" (1/1) ... [2020-10-28 09:35:13,071 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:35:13" (1/1) ... [2020-10-28 09:35:13,079 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:35:13" (1/1) ... [2020-10-28 09:35:13,079 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:35:13" (1/1) ... [2020-10-28 09:35:13,088 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:35:13" (1/1) ... [2020-10-28 09:35:13,094 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:35:13" (1/1) ... [2020-10-28 09:35:13,096 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:35:13" (1/1) ... [2020-10-28 09:35:13,100 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 09:35:13,101 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 09:35:13,101 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 09:35:13,101 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 09:35:13,102 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:35:13" (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 09:35:13,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 09:35:13,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 09:35:13,178 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 09:35:13,178 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 09:35:13,179 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-28 09:35:13,179 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 09:35:13,179 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 09:35:13,179 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 09:35:13,179 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 09:35:13,179 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 09:35:13,180 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 09:35:13,180 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-28 09:35:13,180 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 09:35:13,180 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-28 09:35:13,180 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 09:35:13,180 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-28 09:35:13,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 09:35:13,181 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 09:35:13,181 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 09:35:13,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 09:35:13,181 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 09:35:13,181 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 09:35:13,705 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 09:35:13,705 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-28 09:35:13,707 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:35:13 BoogieIcfgContainer [2020-10-28 09:35:13,708 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 09:35:13,712 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 09:35:13,712 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 09:35:13,716 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 09:35:13,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:35:12" (1/3) ... [2020-10-28 09:35:13,718 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6975f280 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:35:13, skipping insertion in model container [2020-10-28 09:35:13,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:35:13" (2/3) ... [2020-10-28 09:35:13,719 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6975f280 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:35:13, skipping insertion in model container [2020-10-28 09:35:13,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:35:13" (3/3) ... [2020-10-28 09:35:13,721 INFO L111 eAbstractionObserver]: Analyzing ICFG skipped.c [2020-10-28 09:35:13,737 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 09:35:13,742 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 09:35:13,758 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 09:35:13,805 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 09:35:13,805 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 09:35:13,805 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 09:35:13,805 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 09:35:13,805 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 09:35:13,805 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 09:35:13,806 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 09:35:13,806 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 09:35:13,828 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2020-10-28 09:35:13,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-28 09:35:13,840 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:35:13,841 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] [2020-10-28 09:35:13,841 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:35:13,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:35:13,850 INFO L82 PathProgramCache]: Analyzing trace with hash 1434902792, now seen corresponding path program 1 times [2020-10-28 09:35:13,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:35:13,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1778391743] [2020-10-28 09:35:13,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:35:14,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:14,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:14,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:14,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:14,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:14,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:14,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-28 09:35:14,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 09:35:14,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 901 [2020-10-28 09:35:14,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:14,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:14,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:35:14,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 09:35:14,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:35:14,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 11 [2020-10-28 09:35:15,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:35:15,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:15,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:15,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:15,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:35:15,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:15,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 09:35:15,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:15,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:15,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:35:15,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:15,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:35:15,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:35:15,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 09:35:15,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:15,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:15,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:15,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:35:15,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:15,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:35:15,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:15,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:15,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:35:15,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 09:35:15,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:35:15,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:35:15,192 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 09:35:15,193 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1778391743] [2020-10-28 09:35:15,195 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:35:15,196 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 09:35:15,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880451300] [2020-10-28 09:35:15,202 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-28 09:35:15,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:35:15,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-28 09:35:15,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 09:35:15,220 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 3 states. [2020-10-28 09:35:15,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:35:15,352 INFO L93 Difference]: Finished difference Result 70 states and 92 transitions. [2020-10-28 09:35:15,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 09:35:15,354 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-10-28 09:35:15,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:35:15,363 INFO L225 Difference]: With dead ends: 70 [2020-10-28 09:35:15,363 INFO L226 Difference]: Without dead ends: 33 [2020-10-28 09:35:15,367 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 09:35:15,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-28 09:35:15,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-10-28 09:35:15,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-28 09:35:15,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-28 09:35:15,413 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 23 [2020-10-28 09:35:15,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:35:15,414 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-28 09:35:15,414 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-28 09:35:15,414 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-28 09:35:15,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-28 09:35:15,415 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:35:15,415 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] [2020-10-28 09:35:15,416 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 09:35:15,416 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:35:15,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:35:15,417 INFO L82 PathProgramCache]: Analyzing trace with hash 1693068230, now seen corresponding path program 1 times [2020-10-28 09:35:15,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:35:15,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [899754776] [2020-10-28 09:35:15,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:35:15,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:15,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:15,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:15,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:15,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:16,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:16,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-28 09:35:16,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 09:35:16,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 705 [2020-10-28 09:35:16,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:16,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:16,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 09:35:16,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 09:35:16,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 09:35:16,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:16,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:35:16,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:16,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:16,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:16,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:35:16,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:16,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 09:35:16,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:16,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:16,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:35:16,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:16,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:35:16,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:16,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 09:35:16,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:16,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:16,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:16,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:35:16,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:16,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 09:35:16,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:16,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:16,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:35:16,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:16,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:35:16,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:16,246 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 09:35:16,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [899754776] [2020-10-28 09:35:16,247 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:35:16,247 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 09:35:16,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069046590] [2020-10-28 09:35:16,248 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 09:35:16,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:35:16,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 09:35:16,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 09:35:16,250 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 5 states. [2020-10-28 09:35:16,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:35:16,461 INFO L93 Difference]: Finished difference Result 64 states and 74 transitions. [2020-10-28 09:35:16,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 09:35:16,462 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2020-10-28 09:35:16,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:35:16,464 INFO L225 Difference]: With dead ends: 64 [2020-10-28 09:35:16,465 INFO L226 Difference]: Without dead ends: 40 [2020-10-28 09:35:16,466 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 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 09:35:16,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-28 09:35:16,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 35. [2020-10-28 09:35:16,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-28 09:35:16,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-10-28 09:35:16,481 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 23 [2020-10-28 09:35:16,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:35:16,481 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-10-28 09:35:16,481 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 09:35:16,481 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-10-28 09:35:16,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-28 09:35:16,483 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:35:16,483 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:35:16,483 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 09:35:16,483 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:35:16,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:35:16,484 INFO L82 PathProgramCache]: Analyzing trace with hash -1495537627, now seen corresponding path program 1 times [2020-10-28 09:35:16,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:35:16,485 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1758156599] [2020-10-28 09:35:16,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:35:16,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:16,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:16,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:17,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:17,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-28 09:35:17,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:35:17,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 690 [2020-10-28 09:35:17,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:17,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:17,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 09:35:17,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 09:35:17,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 09:35:17,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:17,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:35:17,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:17,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:17,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:17,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:35:17,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:17,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 09:35:17,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:17,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:17,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:35:17,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:17,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:35:17,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:17,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 09:35:17,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:17,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:17,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:17,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:35:17,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:17,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 09:35:17,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:17,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:17,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:35:17,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:35:17,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:35:17,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:35:17,286 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 09:35:17,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1758156599] [2020-10-28 09:35:17,287 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:35:17,287 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 09:35:17,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771182550] [2020-10-28 09:35:17,288 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 09:35:17,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:35:17,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 09:35:17,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 09:35:17,290 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 5 states. [2020-10-28 09:35:17,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:35:17,419 INFO L93 Difference]: Finished difference Result 62 states and 70 transitions. [2020-10-28 09:35:17,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 09:35:17,419 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-10-28 09:35:17,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:35:17,420 INFO L225 Difference]: With dead ends: 62 [2020-10-28 09:35:17,421 INFO L226 Difference]: Without dead ends: 37 [2020-10-28 09:35:17,421 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 09:35:17,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-28 09:35:17,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-10-28 09:35:17,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-28 09:35:17,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-10-28 09:35:17,430 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 30 [2020-10-28 09:35:17,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:35:17,430 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-10-28 09:35:17,431 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 09:35:17,431 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-10-28 09:35:17,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-28 09:35:17,432 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:35:17,432 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:35:17,432 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 09:35:17,432 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:35:17,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:35:17,433 INFO L82 PathProgramCache]: Analyzing trace with hash -1607242461, now seen corresponding path program 2 times [2020-10-28 09:35:17,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:35:17,434 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1693549697] [2020-10-28 09:35:17,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:35:17,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:17,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:17,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:18,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:18,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-28 09:35:18,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:35:18,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 648 [2020-10-28 09:35:18,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:18,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:18,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 09:35:18,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-28 09:35:18,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 09:35:18,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:35:18,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:35:18,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:18,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:18,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:18,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:35:18,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:18,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 09:35:18,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:18,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:18,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:35:18,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:18,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:35:18,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:35:18,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 09:35:18,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:18,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:18,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:18,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:35:18,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:18,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:35:18,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:18,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:18,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:35:18,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:18,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:35:18,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:18,268 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-28 09:35:18,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1693549697] [2020-10-28 09:35:18,269 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:35:18,269 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 09:35:18,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520043479] [2020-10-28 09:35:18,270 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 09:35:18,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:35:18,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 09:35:18,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-28 09:35:18,271 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 10 states. [2020-10-28 09:35:18,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:35:18,678 INFO L93 Difference]: Finished difference Result 67 states and 78 transitions. [2020-10-28 09:35:18,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 09:35:18,678 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 32 [2020-10-28 09:35:18,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:35:18,680 INFO L225 Difference]: With dead ends: 67 [2020-10-28 09:35:18,680 INFO L226 Difference]: Without dead ends: 64 [2020-10-28 09:35:18,681 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2020-10-28 09:35:18,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-28 09:35:18,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 50. [2020-10-28 09:35:18,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-28 09:35:18,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 58 transitions. [2020-10-28 09:35:18,691 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 58 transitions. Word has length 32 [2020-10-28 09:35:18,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:35:18,692 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 58 transitions. [2020-10-28 09:35:18,692 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 09:35:18,692 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 58 transitions. [2020-10-28 09:35:18,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-28 09:35:18,693 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:35:18,693 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:35:18,694 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 09:35:18,694 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:35:18,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:35:18,694 INFO L82 PathProgramCache]: Analyzing trace with hash -1349077023, now seen corresponding path program 1 times [2020-10-28 09:35:18,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:35:18,695 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [32157298] [2020-10-28 09:35:18,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:35:18,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:18,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:18,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:19,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:19,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-28 09:35:19,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:35:19,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 649 [2020-10-28 09:35:19,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:19,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:19,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 09:35:19,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 09:35:19,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 09:35:19,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:35:20,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:35:20,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:20,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:20,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:20,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:35:20,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:20,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 09:35:20,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:20,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:20,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:35:20,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:20,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:35:20,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:20,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 09:35:20,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:20,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:20,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:20,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:35:20,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:20,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 09:35:20,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:20,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:20,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:35:20,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:20,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:35:20,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:35:20,134 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 09:35:20,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [32157298] [2020-10-28 09:35:20,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:35:20,135 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-28 09:35:20,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151551965] [2020-10-28 09:35:20,136 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-28 09:35:20,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:35:20,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-28 09:35:20,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-10-28 09:35:20,137 INFO L87 Difference]: Start difference. First operand 50 states and 58 transitions. Second operand 15 states. [2020-10-28 09:35:21,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:35:21,459 INFO L93 Difference]: Finished difference Result 92 states and 110 transitions. [2020-10-28 09:35:21,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 09:35:21,459 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 32 [2020-10-28 09:35:21,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:35:21,463 INFO L225 Difference]: With dead ends: 92 [2020-10-28 09:35:21,464 INFO L226 Difference]: Without dead ends: 89 [2020-10-28 09:35:21,465 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=147, Invalid=555, Unknown=0, NotChecked=0, Total=702 [2020-10-28 09:35:21,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-10-28 09:35:21,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 56. [2020-10-28 09:35:21,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-28 09:35:21,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 66 transitions. [2020-10-28 09:35:21,477 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 66 transitions. Word has length 32 [2020-10-28 09:35:21,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:35:21,477 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 66 transitions. [2020-10-28 09:35:21,477 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-28 09:35:21,478 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 66 transitions. [2020-10-28 09:35:21,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-28 09:35:21,480 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:35:21,480 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 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 09:35:21,480 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 09:35:21,480 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:35:21,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:35:21,481 INFO L82 PathProgramCache]: Analyzing trace with hash -1323240097, now seen corresponding path program 2 times [2020-10-28 09:35:21,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:35:21,481 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [425408373] [2020-10-28 09:35:21,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:35:21,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:21,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:21,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:21,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:21,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:22,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:24,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:26,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:26,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-28 09:35:26,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 09:35:26,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 09:35:26,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:26,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:26,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 09:35:26,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 09:35:26,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 09:35:26,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:26,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:35:26,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:26,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:26,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:26,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:35:26,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:26,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 09:35:26,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:26,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:26,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:35:26,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:26,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:35:26,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:35:26,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-28 09:35:26,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:26,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:26,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:26,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:35:26,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:26,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 09:35:26,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:26,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:26,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:35:26,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:26,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:35:26,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:35:26,969 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 09:35:26,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [425408373] [2020-10-28 09:35:26,970 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:35:26,970 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 09:35:26,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646905413] [2020-10-28 09:35:26,971 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 09:35:26,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:35:26,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 09:35:26,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-28 09:35:26,972 INFO L87 Difference]: Start difference. First operand 56 states and 66 transitions. Second operand 10 states. [2020-10-28 09:35:28,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:35:28,284 INFO L93 Difference]: Finished difference Result 150 states and 172 transitions. [2020-10-28 09:35:28,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 09:35:28,285 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 34 [2020-10-28 09:35:28,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:35:28,287 INFO L225 Difference]: With dead ends: 150 [2020-10-28 09:35:28,287 INFO L226 Difference]: Without dead ends: 131 [2020-10-28 09:35:28,288 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=95, Invalid=325, Unknown=0, NotChecked=0, Total=420 [2020-10-28 09:35:28,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-10-28 09:35:28,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 67. [2020-10-28 09:35:28,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-28 09:35:28,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 78 transitions. [2020-10-28 09:35:28,305 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 78 transitions. Word has length 34 [2020-10-28 09:35:28,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:35:28,306 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 78 transitions. [2020-10-28 09:35:28,306 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 09:35:28,306 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 78 transitions. [2020-10-28 09:35:28,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-28 09:35:28,308 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:35:28,308 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:35:28,308 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 09:35:28,308 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:35:28,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:35:28,309 INFO L82 PathProgramCache]: Analyzing trace with hash -241680944, now seen corresponding path program 1 times [2020-10-28 09:35:28,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:35:28,309 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1468392242] [2020-10-28 09:35:28,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:35:28,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:28,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:28,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:29,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:29,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-28 09:35:29,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:35:29,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 755 [2020-10-28 09:35:29,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:29,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:29,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 09:35:29,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-28 09:35:29,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 09:35:29,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:29,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:35:29,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:29,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:29,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:29,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:35:29,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:29,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 09:35:29,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:29,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:29,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:35:29,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:29,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:35:29,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:29,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 09:35:29,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:29,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:29,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:29,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:35:29,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:29,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:35:29,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:29,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:29,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:35:29,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:29,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:35:29,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:29,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 09:35:29,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:29,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:29,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:29,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:35:29,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:29,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:35:29,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:29,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:29,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:35:29,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:29,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:35:29,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 09:35:29,268 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-28 09:35:29,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1468392242] [2020-10-28 09:35:29,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:35:29,268 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 09:35:29,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516057198] [2020-10-28 09:35:29,269 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 09:35:29,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:35:29,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 09:35:29,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-28 09:35:29,271 INFO L87 Difference]: Start difference. First operand 67 states and 78 transitions. Second operand 10 states. [2020-10-28 09:35:29,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:35:29,835 INFO L93 Difference]: Finished difference Result 110 states and 132 transitions. [2020-10-28 09:35:29,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 09:35:29,836 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 40 [2020-10-28 09:35:29,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:35:29,839 INFO L225 Difference]: With dead ends: 110 [2020-10-28 09:35:29,839 INFO L226 Difference]: Without dead ends: 107 [2020-10-28 09:35:29,842 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2020-10-28 09:35:29,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-10-28 09:35:29,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 99. [2020-10-28 09:35:29,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-28 09:35:29,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 120 transitions. [2020-10-28 09:35:29,882 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 120 transitions. Word has length 40 [2020-10-28 09:35:29,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:35:29,883 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 120 transitions. [2020-10-28 09:35:29,883 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 09:35:29,883 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 120 transitions. [2020-10-28 09:35:29,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-28 09:35:29,887 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:35:29,888 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:35:29,888 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 09:35:29,888 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:35:29,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:35:29,888 INFO L82 PathProgramCache]: Analyzing trace with hash 2059141646, now seen corresponding path program 1 times [2020-10-28 09:35:29,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:35:29,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [581951603] [2020-10-28 09:35:29,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:35:29,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:29,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:29,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:30,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:30,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-28 09:35:30,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:35:30,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 661 [2020-10-28 09:35:30,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:30,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:30,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 09:35:30,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-28 09:35:30,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 09:35:30,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:30,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:35:30,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:30,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:30,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:30,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:35:30,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:30,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:35:30,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:30,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:30,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:35:30,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:30,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:35:30,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:30,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 09:35:30,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:30,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:30,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:30,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:35:30,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:30,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:35:30,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:30,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:30,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:35:30,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:30,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:35:30,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:30,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 09:35:30,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:30,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:30,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:30,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:35:30,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:30,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:35:30,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:30,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:30,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:35:30,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:30,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:35:30,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:35:30,763 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-28 09:35:30,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [581951603] [2020-10-28 09:35:30,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:35:30,764 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 09:35:30,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318126350] [2020-10-28 09:35:30,764 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 09:35:30,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:35:30,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 09:35:30,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-28 09:35:30,766 INFO L87 Difference]: Start difference. First operand 99 states and 120 transitions. Second operand 11 states. [2020-10-28 09:35:31,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:35:31,302 INFO L93 Difference]: Finished difference Result 116 states and 138 transitions. [2020-10-28 09:35:31,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 09:35:31,303 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 40 [2020-10-28 09:35:31,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:35:31,305 INFO L225 Difference]: With dead ends: 116 [2020-10-28 09:35:31,305 INFO L226 Difference]: Without dead ends: 113 [2020-10-28 09:35:31,306 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2020-10-28 09:35:31,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-28 09:35:31,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 77. [2020-10-28 09:35:31,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-28 09:35:31,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 89 transitions. [2020-10-28 09:35:31,323 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 89 transitions. Word has length 40 [2020-10-28 09:35:31,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:35:31,323 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 89 transitions. [2020-10-28 09:35:31,323 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 09:35:31,323 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 89 transitions. [2020-10-28 09:35:31,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-28 09:35:31,324 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:35:31,324 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:35:31,325 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 09:35:31,325 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:35:31,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:35:31,325 INFO L82 PathProgramCache]: Analyzing trace with hash 616532398, now seen corresponding path program 1 times [2020-10-28 09:35:31,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:35:31,326 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [30565345] [2020-10-28 09:35:31,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:35:31,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:31,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:31,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:31,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:31,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:32,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:34,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:34,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:36,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:36,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-28 09:35:36,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 09:35:36,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 09:35:36,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:36,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:36,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 09:35:36,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 09:35:36,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 09:35:36,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:36,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:35:36,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:36,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:36,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:36,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:35:36,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:36,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 09:35:36,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:36,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:36,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:35:36,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:36,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:35:36,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:36,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-28 09:35:36,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:36,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:36,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:36,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:35:36,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:36,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:35:36,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:36,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:36,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:35:36,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:36,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:35:36,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:36,508 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 09:35:36,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [30565345] [2020-10-28 09:35:36,509 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:35:36,509 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 09:35:36,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066466470] [2020-10-28 09:35:36,511 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 09:35:36,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:35:36,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 09:35:36,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-28 09:35:36,517 INFO L87 Difference]: Start difference. First operand 77 states and 89 transitions. Second operand 10 states. [2020-10-28 09:35:37,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:35:37,069 INFO L93 Difference]: Finished difference Result 201 states and 239 transitions. [2020-10-28 09:35:37,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 09:35:37,070 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 39 [2020-10-28 09:35:37,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:35:37,072 INFO L225 Difference]: With dead ends: 201 [2020-10-28 09:35:37,072 INFO L226 Difference]: Without dead ends: 145 [2020-10-28 09:35:37,073 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2020-10-28 09:35:37,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-10-28 09:35:37,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 108. [2020-10-28 09:35:37,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-28 09:35:37,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 123 transitions. [2020-10-28 09:35:37,097 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 123 transitions. Word has length 39 [2020-10-28 09:35:37,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:35:37,098 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 123 transitions. [2020-10-28 09:35:37,098 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 09:35:37,098 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 123 transitions. [2020-10-28 09:35:37,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-28 09:35:37,099 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:35:37,099 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:35:37,099 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 09:35:37,099 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:35:37,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:35:37,100 INFO L82 PathProgramCache]: Analyzing trace with hash -59063696, now seen corresponding path program 2 times [2020-10-28 09:35:37,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:35:37,100 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [620231132] [2020-10-28 09:35:37,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:35:37,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:37,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:37,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:37,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:37,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-28 09:35:37,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:35:37,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 784 [2020-10-28 09:35:37,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:37,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:37,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 09:35:37,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-28 09:35:37,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-28 09:35:37,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:38,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:35:38,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:38,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:38,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:38,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:35:38,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:38,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:35:38,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:38,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:38,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:35:38,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:38,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:35:38,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:38,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 09:35:38,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:38,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:38,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:38,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:35:38,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:38,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:35:38,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:38,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:38,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:35:38,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:38,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:35:38,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:38,131 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-28 09:35:38,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [620231132] [2020-10-28 09:35:38,131 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:35:38,131 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 09:35:38,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719687530] [2020-10-28 09:35:38,132 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 09:35:38,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:35:38,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 09:35:38,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-28 09:35:38,133 INFO L87 Difference]: Start difference. First operand 108 states and 123 transitions. Second operand 11 states. [2020-10-28 09:35:38,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:35:38,562 INFO L93 Difference]: Finished difference Result 118 states and 132 transitions. [2020-10-28 09:35:38,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 09:35:38,562 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 41 [2020-10-28 09:35:38,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:35:38,565 INFO L225 Difference]: With dead ends: 118 [2020-10-28 09:35:38,565 INFO L226 Difference]: Without dead ends: 115 [2020-10-28 09:35:38,566 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2020-10-28 09:35:38,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-10-28 09:35:38,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 73. [2020-10-28 09:35:38,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-28 09:35:38,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 82 transitions. [2020-10-28 09:35:38,585 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 82 transitions. Word has length 41 [2020-10-28 09:35:38,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:35:38,585 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 82 transitions. [2020-10-28 09:35:38,585 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 09:35:38,585 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 82 transitions. [2020-10-28 09:35:38,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-28 09:35:38,587 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:35:38,588 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:35:38,588 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 09:35:38,588 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:35:38,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:35:38,589 INFO L82 PathProgramCache]: Analyzing trace with hash 1802244477, now seen corresponding path program 2 times [2020-10-28 09:35:38,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:35:38,589 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [706817508] [2020-10-28 09:35:38,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:35:38,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:38,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:38,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:38,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:41,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:41,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-28 09:35:41,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 09:35:41,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2701 [2020-10-28 09:35:41,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:41,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:41,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 09:35:41,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 09:35:41,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-28 09:35:41,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:41,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:35:41,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:41,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:41,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:41,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:35:41,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:41,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 09:35:41,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:41,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:41,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:35:41,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:41,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:35:41,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:41,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 09:35:41,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:41,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:41,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:41,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:35:41,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:41,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:35:41,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:41,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:41,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:35:41,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:41,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:35:41,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:41,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 09:35:41,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:41,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:41,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:41,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:35:41,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:41,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:35:41,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:41,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:41,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:35:41,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:41,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:35:41,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:41,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 09:35:41,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:41,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:41,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:41,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:35:41,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:41,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:35:41,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:41,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:41,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:35:41,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:41,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:35:41,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:41,471 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 09:35:41,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [706817508] [2020-10-28 09:35:41,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:35:41,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 09:35:41,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267367801] [2020-10-28 09:35:41,473 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 09:35:41,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:35:41,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 09:35:41,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-28 09:35:41,474 INFO L87 Difference]: Start difference. First operand 73 states and 82 transitions. Second operand 10 states. [2020-10-28 09:35:41,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:35:41,969 INFO L93 Difference]: Finished difference Result 112 states and 124 transitions. [2020-10-28 09:35:41,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 09:35:41,970 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 48 [2020-10-28 09:35:41,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:35:41,971 INFO L225 Difference]: With dead ends: 112 [2020-10-28 09:35:41,971 INFO L226 Difference]: Without dead ends: 70 [2020-10-28 09:35:41,972 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-10-28 09:35:41,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-28 09:35:41,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 60. [2020-10-28 09:35:41,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-28 09:35:41,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 66 transitions. [2020-10-28 09:35:41,984 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 66 transitions. Word has length 48 [2020-10-28 09:35:41,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:35:41,984 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 66 transitions. [2020-10-28 09:35:41,984 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 09:35:41,985 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 66 transitions. [2020-10-28 09:35:41,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-28 09:35:41,985 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:35:41,985 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:35:41,986 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 09:35:41,986 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:35:41,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:35:41,986 INFO L82 PathProgramCache]: Analyzing trace with hash 131183816, now seen corresponding path program 3 times [2020-10-28 09:35:41,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:35:41,987 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [984962339] [2020-10-28 09:35:41,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:35:42,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:42,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:42,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:42,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:42,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:42,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:42,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:43,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:43,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:43,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:47,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:47,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-28 09:35:47,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 09:35:47,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 09:35:47,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:47,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:47,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 09:35:47,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-28 09:35:47,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-28 09:35:47,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:47,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:35:47,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:47,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:47,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:47,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:35:47,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:47,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 09:35:47,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:47,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:47,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:35:47,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:47,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:35:47,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:47,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 09:35:47,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:47,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:47,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:47,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:35:47,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:47,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:35:47,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:47,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:47,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:35:47,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:47,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:35:47,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:47,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-28 09:35:47,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:47,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:47,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:47,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:35:47,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:47,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:35:47,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:47,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:47,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:35:47,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:47,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:35:47,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:47,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-28 09:35:47,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:47,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:47,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:47,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:35:47,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:47,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 09:35:47,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:47,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:47,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:35:47,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:47,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:35:47,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:47,286 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-28 09:35:47,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [984962339] [2020-10-28 09:35:47,287 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:35:47,287 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-28 09:35:47,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415754459] [2020-10-28 09:35:47,288 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 09:35:47,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:35:47,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 09:35:47,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-10-28 09:35:47,293 INFO L87 Difference]: Start difference. First operand 60 states and 66 transitions. Second operand 13 states. [2020-10-28 09:35:48,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:35:48,121 INFO L93 Difference]: Finished difference Result 111 states and 132 transitions. [2020-10-28 09:35:48,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 09:35:48,122 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 57 [2020-10-28 09:35:48,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:35:48,124 INFO L225 Difference]: With dead ends: 111 [2020-10-28 09:35:48,124 INFO L226 Difference]: Without dead ends: 108 [2020-10-28 09:35:48,127 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2020-10-28 09:35:48,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-28 09:35:48,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 81. [2020-10-28 09:35:48,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-28 09:35:48,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 93 transitions. [2020-10-28 09:35:48,166 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 93 transitions. Word has length 57 [2020-10-28 09:35:48,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:35:48,167 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 93 transitions. [2020-10-28 09:35:48,167 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 09:35:48,167 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 93 transitions. [2020-10-28 09:35:48,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-28 09:35:48,170 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:35:48,170 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:35:48,171 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 09:35:48,171 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:35:48,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:35:48,172 INFO L82 PathProgramCache]: Analyzing trace with hash -378289274, now seen corresponding path program 1 times [2020-10-28 09:35:48,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:35:48,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1474567034] [2020-10-28 09:35:48,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:35:48,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:48,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:48,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:48,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:48,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:49,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:53,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:53,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-28 09:35:53,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 09:35:53,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-28 09:35:53,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:53,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:53,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-28 09:35:53,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 09:35:53,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-28 09:35:53,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:54,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:35:54,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:54,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:54,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:54,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:35:54,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:54,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 09:35:54,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:54,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:54,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:35:54,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:54,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:35:54,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:54,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 09:35:54,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:54,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:54,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:54,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:35:54,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:54,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:35:54,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:54,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:54,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:35:54,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:54,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:35:54,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:54,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-28 09:35:54,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:54,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:54,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:54,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:35:54,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:54,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 09:35:54,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:54,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:54,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:35:54,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:54,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:35:54,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:54,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-28 09:35:54,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:54,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:54,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:54,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:35:54,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:54,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 09:35:54,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:54,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:54,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:35:54,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:54,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:35:54,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:54,340 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 4 proven. 30 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 09:35:54,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1474567034] [2020-10-28 09:35:54,341 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:35:54,341 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-28 09:35:54,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351755803] [2020-10-28 09:35:54,341 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-28 09:35:54,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:35:54,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-28 09:35:54,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2020-10-28 09:35:54,343 INFO L87 Difference]: Start difference. First operand 81 states and 93 transitions. Second operand 20 states. [2020-10-28 09:35:57,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:35:57,023 INFO L93 Difference]: Finished difference Result 163 states and 187 transitions. [2020-10-28 09:35:57,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-28 09:35:57,023 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 57 [2020-10-28 09:35:57,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:35:57,026 INFO L225 Difference]: With dead ends: 163 [2020-10-28 09:35:57,026 INFO L226 Difference]: Without dead ends: 160 [2020-10-28 09:35:57,027 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=294, Invalid=1428, Unknown=0, NotChecked=0, Total=1722 [2020-10-28 09:35:57,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-10-28 09:35:57,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 116. [2020-10-28 09:35:57,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-28 09:35:57,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 134 transitions. [2020-10-28 09:35:57,052 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 134 transitions. Word has length 57 [2020-10-28 09:35:57,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:35:57,053 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 134 transitions. [2020-10-28 09:35:57,053 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-28 09:35:57,053 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 134 transitions. [2020-10-28 09:35:57,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-28 09:35:57,054 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:35:57,054 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:35:57,054 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 09:35:57,055 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:35:57,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:35:57,055 INFO L82 PathProgramCache]: Analyzing trace with hash -1997598776, now seen corresponding path program 2 times [2020-10-28 09:35:57,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:35:57,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1597110817] [2020-10-28 09:35:57,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:35:57,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:57,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:57,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:57,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:57,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:58,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:58,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:58,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:58,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:00,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:02,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:02,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 09:36:02,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 09:36:02,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 09:36:02,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:02,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:02,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 09:36:02,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-28 09:36:02,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-28 09:36:02,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:02,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:36:02,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:02,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:02,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:02,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:36:02,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:36:02,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:36:02,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:02,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:02,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:36:02,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:36:02,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:36:02,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:02,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-28 09:36:02,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:02,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:02,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:02,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:36:02,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:36:02,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:36:02,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:02,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:02,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:36:02,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:36:02,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:36:02,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:02,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 09:36:02,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:02,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:02,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:02,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:36:02,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:36:02,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:36:02,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:02,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:02,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:36:02,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:36:02,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:36:02,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:02,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 09:36:02,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:02,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:02,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:02,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:36:02,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:36:02,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:36:02,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:02,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:02,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:36:02,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:36:02,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:36:02,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:02,365 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-10-28 09:36:02,365 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1597110817] [2020-10-28 09:36:02,365 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:36:02,365 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 09:36:02,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118113055] [2020-10-28 09:36:02,366 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 09:36:02,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:36:02,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 09:36:02,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-10-28 09:36:02,367 INFO L87 Difference]: Start difference. First operand 116 states and 134 transitions. Second operand 14 states. [2020-10-28 09:36:03,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:36:03,294 INFO L93 Difference]: Finished difference Result 162 states and 193 transitions. [2020-10-28 09:36:03,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 09:36:03,295 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 59 [2020-10-28 09:36:03,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:36:03,297 INFO L225 Difference]: With dead ends: 162 [2020-10-28 09:36:03,297 INFO L226 Difference]: Without dead ends: 159 [2020-10-28 09:36:03,298 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=71, Invalid=391, Unknown=0, NotChecked=0, Total=462 [2020-10-28 09:36:03,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-28 09:36:03,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 68. [2020-10-28 09:36:03,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-28 09:36:03,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 74 transitions. [2020-10-28 09:36:03,314 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 74 transitions. Word has length 59 [2020-10-28 09:36:03,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:36:03,315 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 74 transitions. [2020-10-28 09:36:03,315 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 09:36:03,315 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 74 transitions. [2020-10-28 09:36:03,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-28 09:36:03,316 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:36:03,316 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1] [2020-10-28 09:36:03,316 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 09:36:03,316 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:36:03,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:36:03,317 INFO L82 PathProgramCache]: Analyzing trace with hash 1713049717, now seen corresponding path program 4 times [2020-10-28 09:36:03,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:36:03,317 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1736722961] [2020-10-28 09:36:03,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:36:03,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:03,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:03,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:03,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:05,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:05,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-28 09:36:05,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 09:36:05,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2065 [2020-10-28 09:36:05,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:05,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:05,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 09:36:05,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-28 09:36:05,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-28 09:36:05,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:05,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:36:05,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:05,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:05,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:05,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:36:05,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:36:05,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:36:05,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:05,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:05,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:36:05,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:36:05,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:36:05,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:05,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 09:36:05,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:05,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:05,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:05,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:36:05,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:36:05,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:36:05,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:05,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:05,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:36:05,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:36:05,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:36:05,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:36:05,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-28 09:36:05,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:05,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:05,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:05,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:36:05,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:36:05,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:36:05,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:05,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:05,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:36:05,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:36:05,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:36:05,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:36:05,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-28 09:36:05,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:05,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:05,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:05,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:36:05,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:36:05,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 09:36:05,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:05,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:05,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:36:05,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:36:05,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:36:05,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:36:05,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-28 09:36:05,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:05,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:05,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:05,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:36:05,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:36:05,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 09:36:05,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:05,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:05,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:36:05,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:36:05,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:36:05,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:36:05,711 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 6 proven. 25 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-28 09:36:05,712 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1736722961] [2020-10-28 09:36:05,712 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:36:05,712 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-28 09:36:05,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877540595] [2020-10-28 09:36:05,713 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 09:36:05,713 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:36:05,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 09:36:05,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-28 09:36:05,714 INFO L87 Difference]: Start difference. First operand 68 states and 74 transitions. Second operand 13 states. [2020-10-28 09:36:06,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:36:06,769 INFO L93 Difference]: Finished difference Result 117 states and 136 transitions. [2020-10-28 09:36:06,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 09:36:06,769 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 65 [2020-10-28 09:36:06,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:36:06,771 INFO L225 Difference]: With dead ends: 117 [2020-10-28 09:36:06,771 INFO L226 Difference]: Without dead ends: 114 [2020-10-28 09:36:06,773 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=84, Invalid=516, Unknown=0, NotChecked=0, Total=600 [2020-10-28 09:36:06,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-28 09:36:06,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 95. [2020-10-28 09:36:06,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-28 09:36:06,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 109 transitions. [2020-10-28 09:36:06,795 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 109 transitions. Word has length 65 [2020-10-28 09:36:06,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:36:06,796 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 109 transitions. [2020-10-28 09:36:06,796 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 09:36:06,796 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 109 transitions. [2020-10-28 09:36:06,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-28 09:36:06,797 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:36:06,797 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:36:06,797 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 09:36:06,797 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:36:06,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:36:06,798 INFO L82 PathProgramCache]: Analyzing trace with hash -530933581, now seen corresponding path program 1 times [2020-10-28 09:36:06,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:36:06,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1987300815] [2020-10-28 09:36:06,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:36:06,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:06,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:06,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:07,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:08,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:08,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-28 09:36:08,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 09:36:08,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1332 [2020-10-28 09:36:08,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:08,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:08,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-28 09:36:08,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 09:36:08,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-28 09:36:08,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:08,863 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 34 [2020-10-28 09:36:09,053 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 33 [2020-10-28 09:36:09,254 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 33 [2020-10-28 09:36:09,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:36:09,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:09,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:09,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:09,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:36:09,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:36:09,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:36:09,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:09,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:09,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:36:09,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:36:09,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:36:09,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:09,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 09:36:09,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:09,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:09,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:09,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:36:09,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:36:09,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:36:09,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:09,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:09,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:36:09,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:36:09,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:36:09,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:09,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-28 09:36:09,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:09,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:09,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:09,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:36:09,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:36:09,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 09:36:09,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:09,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:09,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:36:09,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:36:09,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:36:09,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:09,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-28 09:36:09,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:09,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:09,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:09,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:36:09,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:36:09,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 09:36:09,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:09,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:09,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:36:09,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:36:09,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:36:09,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:09,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-28 09:36:09,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:09,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:09,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:09,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:36:09,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:36:09,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 09:36:09,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:09,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:09,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:36:09,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:36:09,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:36:09,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:09,616 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 6 proven. 40 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-28 09:36:09,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1987300815] [2020-10-28 09:36:09,616 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:36:09,616 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-28 09:36:09,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834091202] [2020-10-28 09:36:09,617 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-28 09:36:09,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:36:09,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-28 09:36:09,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2020-10-28 09:36:09,618 INFO L87 Difference]: Start difference. First operand 95 states and 109 transitions. Second operand 21 states. [2020-10-28 09:36:12,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:36:12,025 INFO L93 Difference]: Finished difference Result 192 states and 220 transitions. [2020-10-28 09:36:12,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-28 09:36:12,026 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 65 [2020-10-28 09:36:12,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:36:12,027 INFO L225 Difference]: With dead ends: 192 [2020-10-28 09:36:12,027 INFO L226 Difference]: Without dead ends: 189 [2020-10-28 09:36:12,028 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=273, Invalid=1367, Unknown=0, NotChecked=0, Total=1640 [2020-10-28 09:36:12,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-10-28 09:36:12,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 138. [2020-10-28 09:36:12,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-10-28 09:36:12,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 158 transitions. [2020-10-28 09:36:12,057 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 158 transitions. Word has length 65 [2020-10-28 09:36:12,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:36:12,057 INFO L481 AbstractCegarLoop]: Abstraction has 138 states and 158 transitions. [2020-10-28 09:36:12,057 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-28 09:36:12,057 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 158 transitions. [2020-10-28 09:36:12,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-28 09:36:12,062 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:36:12,062 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:36:12,062 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 09:36:12,062 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:36:12,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:36:12,063 INFO L82 PathProgramCache]: Analyzing trace with hash 1601078005, now seen corresponding path program 2 times [2020-10-28 09:36:12,063 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:36:12,063 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [395157560] [2020-10-28 09:36:12,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:36:12,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:12,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:12,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:12,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:12,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:13,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:15,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:16,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:17,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:17,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-28 09:36:17,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 09:36:17,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 09:36:17,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:17,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:17,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 09:36:17,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-28 09:36:17,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-28 09:36:17,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:17,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:36:17,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:17,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:17,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:17,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:36:17,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:36:17,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:36:17,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:17,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:17,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:36:17,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:36:17,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:36:17,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 09:36:17,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-28 09:36:17,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:17,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:17,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:17,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:36:17,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:36:17,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:36:17,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:17,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:17,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:36:17,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:36:17,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:36:17,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:17,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 09:36:17,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:17,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:17,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:17,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:36:17,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:36:17,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:36:17,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:17,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:17,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:36:17,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:36:17,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:36:17,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:17,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 09:36:17,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:17,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:17,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:17,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:36:17,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:36:17,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:36:17,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:17,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:17,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:36:17,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:36:17,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:36:17,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:17,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 09:36:17,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:17,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:17,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:17,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:36:17,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:36:17,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:36:17,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:17,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:17,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:36:17,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:36:17,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:36:17,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:17,361 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 6 proven. 25 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2020-10-28 09:36:17,361 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [395157560] [2020-10-28 09:36:17,361 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:36:17,361 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 09:36:17,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532206973] [2020-10-28 09:36:17,362 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 09:36:17,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:36:17,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 09:36:17,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-10-28 09:36:17,363 INFO L87 Difference]: Start difference. First operand 138 states and 158 transitions. Second operand 14 states. [2020-10-28 09:36:18,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:36:18,336 INFO L93 Difference]: Finished difference Result 184 states and 217 transitions. [2020-10-28 09:36:18,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 09:36:18,337 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 67 [2020-10-28 09:36:18,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:36:18,338 INFO L225 Difference]: With dead ends: 184 [2020-10-28 09:36:18,339 INFO L226 Difference]: Without dead ends: 181 [2020-10-28 09:36:18,339 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=85, Invalid=515, Unknown=0, NotChecked=0, Total=600 [2020-10-28 09:36:18,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-10-28 09:36:18,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 76. [2020-10-28 09:36:18,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-28 09:36:18,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 82 transitions. [2020-10-28 09:36:18,360 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 82 transitions. Word has length 67 [2020-10-28 09:36:18,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:36:18,360 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 82 transitions. [2020-10-28 09:36:18,360 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 09:36:18,360 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 82 transitions. [2020-10-28 09:36:18,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-28 09:36:18,364 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:36:18,364 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-28 09:36:18,364 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 09:36:18,364 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:36:18,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:36:18,366 INFO L82 PathProgramCache]: Analyzing trace with hash -250056926, now seen corresponding path program 5 times [2020-10-28 09:36:18,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:36:18,366 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1830114413] [2020-10-28 09:36:18,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:36:18,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:18,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:18,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:18,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:22,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:22,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-28 09:36:22,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 09:36:22,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3740 [2020-10-28 09:36:22,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:22,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:22,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 09:36:22,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 09:36:22,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-28 09:36:22,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:22,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:36:22,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:22,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:22,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:22,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:36:22,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:36:22,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:36:22,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:22,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:22,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:36:22,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:36:22,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:36:22,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:22,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 09:36:22,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:22,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:22,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:22,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:36:22,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:36:22,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:36:22,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:22,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:22,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:36:22,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:36:22,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:36:22,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:22,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-28 09:36:22,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:22,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:22,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:22,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:36:22,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:36:22,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:36:22,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:22,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:22,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:36:22,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:36:22,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:36:22,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:22,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-28 09:36:22,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:22,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:22,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:22,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:36:22,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:36:22,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:36:22,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:22,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:22,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:36:22,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:36:22,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:36:22,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:22,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-28 09:36:22,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:22,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:22,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:22,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:36:22,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:36:22,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:36:22,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:22,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:22,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:36:22,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:36:22,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:36:22,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:22,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-28 09:36:22,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:22,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:22,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:22,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:36:22,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:36:22,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:36:22,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:22,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:22,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:36:22,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:36:22,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:36:22,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:22,340 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 40 proven. 16 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-10-28 09:36:22,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1830114413] [2020-10-28 09:36:22,340 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:36:22,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 09:36:22,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736783109] [2020-10-28 09:36:22,341 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 09:36:22,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:36:22,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 09:36:22,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-10-28 09:36:22,342 INFO L87 Difference]: Start difference. First operand 76 states and 82 transitions. Second operand 14 states. [2020-10-28 09:36:23,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:36:23,351 INFO L93 Difference]: Finished difference Result 196 states and 224 transitions. [2020-10-28 09:36:23,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-28 09:36:23,354 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 73 [2020-10-28 09:36:23,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:36:23,356 INFO L225 Difference]: With dead ends: 196 [2020-10-28 09:36:23,356 INFO L226 Difference]: Without dead ends: 101 [2020-10-28 09:36:23,358 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=181, Invalid=469, Unknown=0, NotChecked=0, Total=650 [2020-10-28 09:36:23,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-10-28 09:36:23,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 78. [2020-10-28 09:36:23,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-28 09:36:23,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 84 transitions. [2020-10-28 09:36:23,373 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 84 transitions. Word has length 73 [2020-10-28 09:36:23,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:36:23,373 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 84 transitions. [2020-10-28 09:36:23,373 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 09:36:23,373 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 84 transitions. [2020-10-28 09:36:23,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-28 09:36:23,374 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:36:23,374 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 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] [2020-10-28 09:36:23,374 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 09:36:23,374 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:36:23,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:36:23,375 INFO L82 PathProgramCache]: Analyzing trace with hash 1950807908, now seen corresponding path program 6 times [2020-10-28 09:36:23,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:36:23,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1182551774] [2020-10-28 09:36:23,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:36:23,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:23,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:23,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:23,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:23,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:23,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:24,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:24,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:24,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:28,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:28,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-28 09:36:28,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 09:36:28,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 09:36:28,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:28,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:28,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 09:36:28,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 09:36:28,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 09:36:28,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:29,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:36:29,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:29,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:29,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:29,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:36:29,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:36:29,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:36:29,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:29,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:29,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:36:29,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:36:29,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:36:29,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:29,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-28 09:36:29,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:29,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:29,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:29,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:36:29,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:36:29,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:36:29,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:29,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:29,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:36:29,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:36:29,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:36:29,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:29,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 09:36:29,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:29,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:29,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:29,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:36:29,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:36:29,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:36:29,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:29,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:29,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:36:29,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:36:29,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:36:29,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:29,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 09:36:29,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:29,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:29,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:29,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:36:29,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:36:29,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:36:29,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:29,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:29,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:36:29,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:36:29,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:36:29,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:29,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 09:36:29,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:29,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:29,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:29,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:36:29,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:36:29,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:36:29,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:29,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:29,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:36:29,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:36:29,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:36:29,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:29,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-28 09:36:29,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:29,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:29,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:29,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:36:29,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:36:29,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:36:29,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:29,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:29,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:36:29,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:36:29,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:36:29,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:29,218 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 40 proven. 25 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-10-28 09:36:29,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1182551774] [2020-10-28 09:36:29,218 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:36:29,219 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-28 09:36:29,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551325839] [2020-10-28 09:36:29,219 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-28 09:36:29,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:36:29,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-28 09:36:29,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2020-10-28 09:36:29,220 INFO L87 Difference]: Start difference. First operand 78 states and 84 transitions. Second operand 16 states. [2020-10-28 09:36:30,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:36:30,567 INFO L93 Difference]: Finished difference Result 195 states and 215 transitions. [2020-10-28 09:36:30,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-28 09:36:30,568 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 75 [2020-10-28 09:36:30,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:36:30,570 INFO L225 Difference]: With dead ends: 195 [2020-10-28 09:36:30,570 INFO L226 Difference]: Without dead ends: 81 [2020-10-28 09:36:30,572 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=183, Invalid=519, Unknown=0, NotChecked=0, Total=702 [2020-10-28 09:36:30,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-28 09:36:30,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 80. [2020-10-28 09:36:30,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-28 09:36:30,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 86 transitions. [2020-10-28 09:36:30,584 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 86 transitions. Word has length 75 [2020-10-28 09:36:30,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:36:30,585 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 86 transitions. [2020-10-28 09:36:30,585 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-28 09:36:30,585 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 86 transitions. [2020-10-28 09:36:30,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-28 09:36:30,586 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:36:30,586 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 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] [2020-10-28 09:36:30,586 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-28 09:36:30,586 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:36:30,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:36:30,587 INFO L82 PathProgramCache]: Analyzing trace with hash -436963546, now seen corresponding path program 7 times [2020-10-28 09:36:30,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:36:30,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1793505428] [2020-10-28 09:36:30,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:36:30,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:30,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:30,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:30,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:31,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:31,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:34,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:34,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:34,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:34,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:35,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:35,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-28 09:36:35,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 09:36:35,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 09:36:35,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:35,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:35,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 09:36:35,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-28 09:36:35,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-28 09:36:35,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:35,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:36:35,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:35,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:35,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:35,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:36:35,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:36:35,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:36:35,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:35,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:35,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:36:35,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:36:35,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:36:35,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:35,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-28 09:36:35,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:35,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:35,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:35,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:35,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:36:35,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:36:35,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 09:36:35,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:35,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:35,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:36:35,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:36:35,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:36:35,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:35,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-28 09:36:35,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:35,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:35,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:35,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:36:35,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:36:35,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:36:35,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:35,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:35,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:36:35,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:36:35,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:36:35,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:35,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-28 09:36:35,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:35,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:35,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:35,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:36:35,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:36:35,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:36:35,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:35,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:35,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:36:35,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:36:35,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:36:35,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:35,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-28 09:36:35,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:35,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:35,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:35,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:36:35,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:36:35,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:36:35,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:35,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:35,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:36:35,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:36:35,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:36:35,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:35,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-28 09:36:35,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:35,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:35,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:35,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:36:35,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:36:35,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:36:35,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:35,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:35,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:36:35,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:36:35,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:36:35,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:35,938 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 40 proven. 7 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-28 09:36:35,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1793505428] [2020-10-28 09:36:35,938 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:36:35,938 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-28 09:36:35,938 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354831529] [2020-10-28 09:36:35,939 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 09:36:35,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:36:35,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 09:36:35,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-10-28 09:36:35,940 INFO L87 Difference]: Start difference. First operand 80 states and 86 transitions. Second operand 13 states. [2020-10-28 09:36:37,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:36:37,113 INFO L93 Difference]: Finished difference Result 134 states and 145 transitions. [2020-10-28 09:36:37,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-28 09:36:37,115 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 77 [2020-10-28 09:36:37,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:36:37,116 INFO L225 Difference]: With dead ends: 134 [2020-10-28 09:36:37,116 INFO L226 Difference]: Without dead ends: 89 [2020-10-28 09:36:37,118 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=144, Invalid=506, Unknown=0, NotChecked=0, Total=650 [2020-10-28 09:36:37,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-10-28 09:36:37,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 85. [2020-10-28 09:36:37,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-28 09:36:37,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 93 transitions. [2020-10-28 09:36:37,133 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 93 transitions. Word has length 77 [2020-10-28 09:36:37,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:36:37,133 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 93 transitions. [2020-10-28 09:36:37,133 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 09:36:37,133 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 93 transitions. [2020-10-28 09:36:37,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-28 09:36:37,134 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:36:37,134 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 4, 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, 1, 1, 1] [2020-10-28 09:36:37,134 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-28 09:36:37,135 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:36:37,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:36:37,135 INFO L82 PathProgramCache]: Analyzing trace with hash 168298799, now seen corresponding path program 8 times [2020-10-28 09:36:37,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:36:37,135 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1141752308] [2020-10-28 09:36:37,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:36:37,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:37,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:37,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:37,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:37,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:37,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:37,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:37,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:40,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:40,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:41,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:41,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:42,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:42,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-28 09:36:42,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 09:36:42,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 09:36:42,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:42,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:42,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 09:36:42,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-28 09:36:42,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-28 09:36:42,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:42,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:36:42,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:42,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:42,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:42,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:36:42,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:36:42,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:36:42,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:42,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:42,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:36:42,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:36:42,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:36:42,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:42,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-28 09:36:42,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:42,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:42,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:42,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:36:42,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:36:42,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:36:42,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:42,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:42,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:36:42,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:36:42,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:36:42,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:42,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-28 09:36:42,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:42,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:42,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:42,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:36:42,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:36:42,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:36:42,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:42,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:42,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:36:42,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:36:42,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:36:42,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:42,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-28 09:36:42,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:42,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:42,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:42,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:36:42,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:36:42,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:36:42,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:42,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:42,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:36:42,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:36:42,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:36:42,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:42,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-28 09:36:42,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:42,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:42,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:42,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:36:42,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:36:42,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:36:42,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:42,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:42,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:36:42,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:36:42,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:36:42,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:42,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-28 09:36:42,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:42,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:42,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:42,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:36:42,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:36:42,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:36:42,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:42,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:42,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:36:42,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:36:42,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:36:42,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:42,495 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 8 proven. 50 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-28 09:36:42,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1141752308] [2020-10-28 09:36:42,497 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:36:42,497 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-28 09:36:42,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397467483] [2020-10-28 09:36:42,498 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-28 09:36:42,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:36:42,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-28 09:36:42,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2020-10-28 09:36:42,498 INFO L87 Difference]: Start difference. First operand 85 states and 93 transitions. Second operand 16 states. [2020-10-28 09:36:43,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:36:43,990 INFO L93 Difference]: Finished difference Result 171 states and 206 transitions. [2020-10-28 09:36:43,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-28 09:36:43,991 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 82 [2020-10-28 09:36:43,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:36:43,995 INFO L225 Difference]: With dead ends: 171 [2020-10-28 09:36:43,995 INFO L226 Difference]: Without dead ends: 168 [2020-10-28 09:36:43,996 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=148, Invalid=1042, Unknown=0, NotChecked=0, Total=1190 [2020-10-28 09:36:43,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-10-28 09:36:44,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 114. [2020-10-28 09:36:44,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-28 09:36:44,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 130 transitions. [2020-10-28 09:36:44,019 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 130 transitions. Word has length 82 [2020-10-28 09:36:44,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:36:44,020 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 130 transitions. [2020-10-28 09:36:44,020 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-28 09:36:44,020 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 130 transitions. [2020-10-28 09:36:44,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-28 09:36:44,021 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:36:44,021 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:36:44,021 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-28 09:36:44,021 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:36:44,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:36:44,022 INFO L82 PathProgramCache]: Analyzing trace with hash -1881089043, now seen corresponding path program 3 times [2020-10-28 09:36:44,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:36:44,022 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1894815743] [2020-10-28 09:36:44,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:36:44,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:44,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:44,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:44,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:44,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:44,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:44,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:48,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:49,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:49,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-28 09:36:49,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 09:36:49,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-28 09:36:49,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:49,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:49,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-28 09:36:49,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 09:36:49,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 09:36:49,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:50,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:36:50,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:50,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:50,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:50,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:36:50,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:36:50,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:36:50,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:50,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:50,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:36:50,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:36:50,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:36:50,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:50,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-28 09:36:50,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:50,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:50,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:50,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:36:50,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:36:50,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:36:50,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:50,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:50,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:36:50,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:36:50,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:36:50,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:50,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-28 09:36:50,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:50,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:50,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:50,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:36:50,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:36:50,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:36:50,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:50,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:50,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:36:50,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:36:50,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:36:50,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:50,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-28 09:36:50,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:50,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:50,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:50,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:36:50,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:36:50,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:36:50,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:50,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:50,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:36:50,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:36:50,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:36:50,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:50,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-28 09:36:50,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:50,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:50,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:50,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:36:50,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:36:50,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:36:50,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:50,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:50,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:36:50,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:36:50,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:36:50,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:50,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-28 09:36:50,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:50,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:50,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:50,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:36:50,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:36:50,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:36:50,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:50,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:50,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:36:50,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:36:50,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:36:50,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:50,241 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 8 proven. 79 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-10-28 09:36:50,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1894815743] [2020-10-28 09:36:50,242 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:36:50,242 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-28 09:36:50,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259501066] [2020-10-28 09:36:50,242 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-28 09:36:50,242 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:36:50,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-28 09:36:50,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=489, Unknown=0, NotChecked=0, Total=552 [2020-10-28 09:36:50,243 INFO L87 Difference]: Start difference. First operand 114 states and 130 transitions. Second operand 24 states. [2020-10-28 09:36:52,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:36:52,907 INFO L93 Difference]: Finished difference Result 225 states and 257 transitions. [2020-10-28 09:36:52,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-28 09:36:52,910 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 82 [2020-10-28 09:36:52,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:36:52,912 INFO L225 Difference]: With dead ends: 225 [2020-10-28 09:36:52,912 INFO L226 Difference]: Without dead ends: 222 [2020-10-28 09:36:52,913 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=349, Invalid=1721, Unknown=0, NotChecked=0, Total=2070 [2020-10-28 09:36:52,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2020-10-28 09:36:52,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 170. [2020-10-28 09:36:52,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-10-28 09:36:52,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 194 transitions. [2020-10-28 09:36:52,946 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 194 transitions. Word has length 82 [2020-10-28 09:36:52,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:36:52,946 INFO L481 AbstractCegarLoop]: Abstraction has 170 states and 194 transitions. [2020-10-28 09:36:52,946 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-28 09:36:52,947 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 194 transitions. [2020-10-28 09:36:52,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-28 09:36:52,948 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:36:52,948 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:36:52,948 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-28 09:36:52,948 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:36:52,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:36:52,949 INFO L82 PathProgramCache]: Analyzing trace with hash -1082491413, now seen corresponding path program 4 times [2020-10-28 09:36:52,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:36:52,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1544276077] [2020-10-28 09:36:52,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:36:52,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:52,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:53,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:53,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:54,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:54,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:57,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:57,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-28 09:36:57,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 09:36:57,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 09:36:57,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:57,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:57,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 09:36:57,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-28 09:36:57,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-28 09:36:57,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:58,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:36:58,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:58,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:58,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:58,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:36:58,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:36:58,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:36:58,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:58,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:58,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:36:58,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:36:58,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:36:58,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:58,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 09:36:58,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:58,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:58,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:58,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:36:58,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:36:58,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:36:58,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:58,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:58,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:36:58,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:36:58,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:36:58,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:58,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-28 09:36:58,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:58,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:58,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:58,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:36:58,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:36:58,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:36:58,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:58,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:58,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:36:58,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:36:58,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:36:58,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:58,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-28 09:36:58,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:58,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:58,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:58,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:36:58,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:36:58,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:36:58,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:58,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:58,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:36:58,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:36:58,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:36:58,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:58,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-28 09:36:58,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:58,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:58,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:58,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:36:58,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:36:58,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:36:58,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:58,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:58,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:36:58,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:36:58,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:36:58,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:58,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-28 09:36:58,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:58,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:58,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:58,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:36:58,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:36:58,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:36:58,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:58,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:58,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:36:58,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:36:58,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:36:58,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:58,326 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 8 proven. 50 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-28 09:36:58,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1544276077] [2020-10-28 09:36:58,327 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:36:58,327 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-28 09:36:58,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134720987] [2020-10-28 09:36:58,327 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-28 09:36:58,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:36:58,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-28 09:36:58,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2020-10-28 09:36:58,328 INFO L87 Difference]: Start difference. First operand 170 states and 194 transitions. Second operand 17 states. [2020-10-28 09:36:59,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:36:59,836 INFO L93 Difference]: Finished difference Result 260 states and 313 transitions. [2020-10-28 09:36:59,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-28 09:36:59,837 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 84 [2020-10-28 09:36:59,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:36:59,839 INFO L225 Difference]: With dead ends: 260 [2020-10-28 09:36:59,839 INFO L226 Difference]: Without dead ends: 257 [2020-10-28 09:36:59,841 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=148, Invalid=1112, Unknown=0, NotChecked=0, Total=1260 [2020-10-28 09:36:59,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2020-10-28 09:36:59,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 93. [2020-10-28 09:36:59,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-28 09:36:59,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 101 transitions. [2020-10-28 09:36:59,861 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 101 transitions. Word has length 84 [2020-10-28 09:36:59,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:36:59,861 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 101 transitions. [2020-10-28 09:36:59,861 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-28 09:36:59,862 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 101 transitions. [2020-10-28 09:36:59,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-28 09:36:59,862 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:36:59,863 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 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] [2020-10-28 09:36:59,863 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-28 09:36:59,863 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:36:59,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:36:59,863 INFO L82 PathProgramCache]: Analyzing trace with hash -297398820, now seen corresponding path program 9 times [2020-10-28 09:36:59,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:36:59,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1255112787] [2020-10-28 09:36:59,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:36:59,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:59,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:59,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:00,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:01,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:04,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:04,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 09:37:04,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 09:37:04,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4320 [2020-10-28 09:37:04,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:04,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:04,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-28 09:37:04,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 09:37:04,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-28 09:37:04,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:05,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:37:05,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:05,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:05,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:05,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:37:05,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:05,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:37:05,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:05,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:05,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:37:05,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:05,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:37:05,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:05,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-28 09:37:05,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:05,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:05,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:05,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:37:05,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:05,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:37:05,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:05,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:05,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:37:05,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:05,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:37:05,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:05,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-28 09:37:05,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:05,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:05,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:05,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:37:05,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:05,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:37:05,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:05,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:05,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:37:05,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:05,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:37:05,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:05,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-28 09:37:05,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:05,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:05,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:05,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:37:05,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:05,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:37:05,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:05,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:05,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:37:05,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:05,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:37:05,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:05,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-28 09:37:05,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:05,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:05,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:05,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:37:05,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:05,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:37:05,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:05,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:05,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:37:05,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:05,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:37:05,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:05,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-28 09:37:05,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:05,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:05,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:05,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:37:05,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:05,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:37:05,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:05,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:05,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:37:05,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:05,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:37:05,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:05,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-28 09:37:05,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:05,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:05,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:05,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:37:05,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:05,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:37:05,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:05,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:05,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:37:05,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:05,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:37:05,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:05,469 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 34 proven. 73 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-10-28 09:37:05,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1255112787] [2020-10-28 09:37:05,469 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:37:05,469 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-28 09:37:05,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682351712] [2020-10-28 09:37:05,470 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-28 09:37:05,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:37:05,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-28 09:37:05,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=468, Unknown=0, NotChecked=0, Total=552 [2020-10-28 09:37:05,471 INFO L87 Difference]: Start difference. First operand 93 states and 101 transitions. Second operand 24 states. [2020-10-28 09:37:07,949 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 43 [2020-10-28 09:37:08,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:37:08,785 INFO L93 Difference]: Finished difference Result 209 states and 231 transitions. [2020-10-28 09:37:08,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-28 09:37:08,791 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 90 [2020-10-28 09:37:08,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:37:08,792 INFO L225 Difference]: With dead ends: 209 [2020-10-28 09:37:08,793 INFO L226 Difference]: Without dead ends: 176 [2020-10-28 09:37:08,794 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 652 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=477, Invalid=2175, Unknown=0, NotChecked=0, Total=2652 [2020-10-28 09:37:08,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-10-28 09:37:08,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 118. [2020-10-28 09:37:08,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-28 09:37:08,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 134 transitions. [2020-10-28 09:37:08,820 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 134 transitions. Word has length 90 [2020-10-28 09:37:08,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:37:08,820 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 134 transitions. [2020-10-28 09:37:08,820 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-28 09:37:08,820 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 134 transitions. [2020-10-28 09:37:08,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-28 09:37:08,821 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:37:08,821 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:37:08,821 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-28 09:37:08,822 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:37:08,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:37:08,822 INFO L82 PathProgramCache]: Analyzing trace with hash -778479078, now seen corresponding path program 3 times [2020-10-28 09:37:08,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:37:08,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [783323879] [2020-10-28 09:37:08,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:37:08,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:08,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:08,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:09,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:10,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:12,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:12,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 09:37:12,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 09:37:12,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4047 [2020-10-28 09:37:12,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:12,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:12,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-28 09:37:12,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 09:37:12,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-28 09:37:12,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:13,455 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 32 [2020-10-28 09:37:14,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:37:14,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:14,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:14,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:14,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:37:14,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:14,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:37:14,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:14,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:14,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:37:14,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:14,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:37:14,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:14,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-28 09:37:14,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:14,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:14,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:14,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:37:14,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:14,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:37:14,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:14,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:14,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:37:14,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:14,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:37:14,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:14,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-28 09:37:14,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:14,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:14,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:14,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:37:14,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:14,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:37:14,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:14,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:14,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:37:14,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:14,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:37:14,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:14,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-28 09:37:14,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:14,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:14,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:14,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:37:14,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:14,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 09:37:14,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:14,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:14,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:37:14,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:14,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:37:14,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:14,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-28 09:37:14,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:14,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:14,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:14,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:37:14,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:14,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:37:14,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:14,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:14,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:37:14,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:14,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:37:14,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:14,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-28 09:37:14,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:14,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:14,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:14,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:37:14,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:14,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:37:14,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:14,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:14,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:37:14,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:14,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:37:14,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:14,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-28 09:37:14,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:14,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:14,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:14,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:37:14,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:14,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 09:37:14,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:14,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:14,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:37:14,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:14,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:37:14,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:14,292 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 34 proven. 73 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-10-28 09:37:14,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [783323879] [2020-10-28 09:37:14,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:37:14,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-28 09:37:14,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093814664] [2020-10-28 09:37:14,293 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-28 09:37:14,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:37:14,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-28 09:37:14,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=508, Unknown=0, NotChecked=0, Total=600 [2020-10-28 09:37:14,294 INFO L87 Difference]: Start difference. First operand 118 states and 134 transitions. Second operand 25 states. [2020-10-28 09:37:15,698 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 43 [2020-10-28 09:37:16,706 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 43 [2020-10-28 09:37:17,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:37:17,422 INFO L93 Difference]: Finished difference Result 174 states and 190 transitions. [2020-10-28 09:37:17,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-28 09:37:17,423 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 90 [2020-10-28 09:37:17,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:37:17,425 INFO L225 Difference]: With dead ends: 174 [2020-10-28 09:37:17,425 INFO L226 Difference]: Without dead ends: 96 [2020-10-28 09:37:17,427 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 600 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=427, Invalid=2123, Unknown=0, NotChecked=0, Total=2550 [2020-10-28 09:37:17,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-28 09:37:17,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 95. [2020-10-28 09:37:17,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-28 09:37:17,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 103 transitions. [2020-10-28 09:37:17,443 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 103 transitions. Word has length 90 [2020-10-28 09:37:17,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:37:17,443 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 103 transitions. [2020-10-28 09:37:17,443 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-28 09:37:17,443 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 103 transitions. [2020-10-28 09:37:17,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-28 09:37:17,444 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:37:17,445 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 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] [2020-10-28 09:37:17,445 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-28 09:37:17,445 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:37:17,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:37:17,445 INFO L82 PathProgramCache]: Analyzing trace with hash -1701522982, now seen corresponding path program 10 times [2020-10-28 09:37:17,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:37:17,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [705492849] [2020-10-28 09:37:17,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:37:17,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:17,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:17,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:17,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:18,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:18,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:22,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:22,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:22,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:22,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-28 09:37:22,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 09:37:22,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5081 [2020-10-28 09:37:22,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:22,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:22,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 09:37:22,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-28 09:37:22,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 09:37:22,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:22,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:37:22,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:22,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:22,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:22,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:37:22,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:22,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:37:22,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:22,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:22,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:37:22,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:22,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:37:22,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:22,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 09:37:22,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:22,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:22,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:22,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:37:22,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:22,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:37:22,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:22,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:22,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:37:22,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:22,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:37:22,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:22,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-28 09:37:22,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:22,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:22,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:22,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:37:22,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:22,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:37:22,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:22,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:22,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:37:22,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:22,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:37:22,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:22,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-28 09:37:22,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:22,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:22,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:22,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:37:22,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:22,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:37:22,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:22,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:22,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:37:22,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:22,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:37:22,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:22,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-28 09:37:22,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:22,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:22,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:22,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:37:22,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:22,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:37:22,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:22,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:22,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:37:22,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:22,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:37:22,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:22,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-28 09:37:22,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:22,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:22,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:22,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:37:22,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:22,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:37:22,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:22,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:22,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:37:22,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:22,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:37:22,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:22,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-28 09:37:22,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:22,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:22,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:22,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:37:22,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:22,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:37:22,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:22,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:22,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:37:22,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:22,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:37:22,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:22,898 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 10 proven. 68 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2020-10-28 09:37:22,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [705492849] [2020-10-28 09:37:22,898 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:37:22,898 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-28 09:37:22,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093355872] [2020-10-28 09:37:22,899 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-28 09:37:22,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:37:22,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-28 09:37:22,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2020-10-28 09:37:22,900 INFO L87 Difference]: Start difference. First operand 95 states and 103 transitions. Second operand 16 states. [2020-10-28 09:37:24,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:37:24,764 INFO L93 Difference]: Finished difference Result 185 states and 221 transitions. [2020-10-28 09:37:24,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-28 09:37:24,765 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 92 [2020-10-28 09:37:24,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:37:24,767 INFO L225 Difference]: With dead ends: 185 [2020-10-28 09:37:24,767 INFO L226 Difference]: Without dead ends: 182 [2020-10-28 09:37:24,768 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=158, Invalid=1248, Unknown=0, NotChecked=0, Total=1406 [2020-10-28 09:37:24,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-10-28 09:37:24,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 130. [2020-10-28 09:37:24,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-28 09:37:24,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 148 transitions. [2020-10-28 09:37:24,797 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 148 transitions. Word has length 92 [2020-10-28 09:37:24,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:37:24,797 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 148 transitions. [2020-10-28 09:37:24,797 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-28 09:37:24,797 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 148 transitions. [2020-10-28 09:37:24,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-28 09:37:24,799 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:37:24,799 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:37:24,799 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-28 09:37:24,799 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:37:24,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:37:24,800 INFO L82 PathProgramCache]: Analyzing trace with hash 2112364056, now seen corresponding path program 4 times [2020-10-28 09:37:24,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:37:24,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [648018860] [2020-10-28 09:37:24,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:37:24,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:24,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:24,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:24,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:25,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:26,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:29,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:29,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-28 09:37:29,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 09:37:29,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-28 09:37:29,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:29,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:29,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 09:37:29,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-28 09:37:29,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 09:37:29,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:30,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:37:30,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:30,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:30,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:30,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:37:30,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:30,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:37:30,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:30,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:30,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:37:30,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:30,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:37:30,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:37:30,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 09:37:30,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:30,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:30,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:30,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:37:30,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:30,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:37:30,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:30,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:30,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:37:30,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:30,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:37:30,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:37:30,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-28 09:37:30,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:30,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:30,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:30,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:37:30,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:30,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:37:30,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:30,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:30,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:37:30,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:30,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:37:30,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:37:30,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-28 09:37:30,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:30,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:30,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:30,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:37:30,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:30,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:37:30,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:30,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:30,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:37:30,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:30,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:37:30,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:37:30,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-28 09:37:30,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:30,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:30,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:30,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:37:30,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:30,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:37:30,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:30,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:30,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:37:30,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:30,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:37:30,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:37:30,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-28 09:37:30,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:30,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:30,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:30,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:37:30,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:30,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:37:30,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:30,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:30,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:37:30,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:30,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:37:30,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:37:30,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-28 09:37:30,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:30,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:30,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:30,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:37:30,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:30,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:37:30,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:30,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:30,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:37:30,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:30,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:37:30,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:30,301 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 10 proven. 68 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2020-10-28 09:37:30,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [648018860] [2020-10-28 09:37:30,303 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:37:30,303 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-28 09:37:30,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518071041] [2020-10-28 09:37:30,304 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-28 09:37:30,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:37:30,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-28 09:37:30,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2020-10-28 09:37:30,306 INFO L87 Difference]: Start difference. First operand 130 states and 148 transitions. Second operand 17 states. [2020-10-28 09:37:32,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:37:32,396 INFO L93 Difference]: Finished difference Result 201 states and 242 transitions. [2020-10-28 09:37:32,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-28 09:37:32,397 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 92 [2020-10-28 09:37:32,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:37:32,399 INFO L225 Difference]: With dead ends: 201 [2020-10-28 09:37:32,400 INFO L226 Difference]: Without dead ends: 198 [2020-10-28 09:37:32,401 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=184, Invalid=1538, Unknown=0, NotChecked=0, Total=1722 [2020-10-28 09:37:32,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-10-28 09:37:32,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 103. [2020-10-28 09:37:32,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-28 09:37:32,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 111 transitions. [2020-10-28 09:37:32,423 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 111 transitions. Word has length 92 [2020-10-28 09:37:32,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:37:32,423 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 111 transitions. [2020-10-28 09:37:32,423 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-28 09:37:32,424 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 111 transitions. [2020-10-28 09:37:32,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-28 09:37:32,424 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:37:32,425 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 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] [2020-10-28 09:37:32,425 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-28 09:37:32,425 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:37:32,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:37:32,425 INFO L82 PathProgramCache]: Analyzing trace with hash -1287586937, now seen corresponding path program 11 times [2020-10-28 09:37:32,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:37:32,426 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2046499726] [2020-10-28 09:37:32,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:37:32,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:32,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:32,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:32,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:33,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:33,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:34,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:37,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:37,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:37,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:37,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-28 09:37:37,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 09:37:37,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 09:37:37,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:37,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:37,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 09:37:37,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-28 09:37:37,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-28 09:37:37,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:37,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:37:37,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:37,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:37,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:37,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:37:37,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:37,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:37:37,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:37,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:37,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:37:37,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:37,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:37:37,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:37,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 09:37:37,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:37,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:37,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:37,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:37,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:37:37,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:37:37,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 09:37:37,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:37,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:37,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:37:37,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:37,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:37:37,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:37,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-28 09:37:37,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:37,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:37,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:37,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:37:37,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:37,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:37:37,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:37,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:37,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:37:37,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:37,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:37:37,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:37,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-28 09:37:37,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:37,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:37,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:37,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:37:37,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:37,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:37:37,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:37,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:37,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:37:37,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:37,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:37:37,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:37,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-28 09:37:37,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:37,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:37,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:37,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:37:37,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:37,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:37:37,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:37,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:37,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:37:37,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:37,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:37:37,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:37,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-28 09:37:37,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:37,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:37,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:37,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:37:37,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:37,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:37:37,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:37,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:37,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:37:37,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:37,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:37:37,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:37,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-28 09:37:37,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:37,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:37,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:37,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:37:37,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:37,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:37:37,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:37,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:37,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:37:37,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:37,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:37:37,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:37,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-28 09:37:37,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:37,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:37,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:37,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:37:37,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:37,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:37:37,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:37,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:37,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:37:37,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:37,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:37:37,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:37,861 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 50 proven. 52 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2020-10-28 09:37:37,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2046499726] [2020-10-28 09:37:37,862 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:37:37,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-28 09:37:37,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055374280] [2020-10-28 09:37:37,863 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-28 09:37:37,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:37:37,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-28 09:37:37,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2020-10-28 09:37:37,864 INFO L87 Difference]: Start difference. First operand 103 states and 111 transitions. Second operand 16 states. [2020-10-28 09:37:39,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:37:39,077 INFO L93 Difference]: Finished difference Result 173 states and 186 transitions. [2020-10-28 09:37:39,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-28 09:37:39,080 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 100 [2020-10-28 09:37:39,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:37:39,082 INFO L225 Difference]: With dead ends: 173 [2020-10-28 09:37:39,082 INFO L226 Difference]: Without dead ends: 112 [2020-10-28 09:37:39,083 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=196, Invalid=796, Unknown=0, NotChecked=0, Total=992 [2020-10-28 09:37:39,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-10-28 09:37:39,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 108. [2020-10-28 09:37:39,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-28 09:37:39,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 118 transitions. [2020-10-28 09:37:39,105 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 118 transitions. Word has length 100 [2020-10-28 09:37:39,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:37:39,106 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 118 transitions. [2020-10-28 09:37:39,106 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-28 09:37:39,106 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 118 transitions. [2020-10-28 09:37:39,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-28 09:37:39,107 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:37:39,108 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 4, 4, 4, 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 09:37:39,108 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-28 09:37:39,108 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:37:39,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:37:39,108 INFO L82 PathProgramCache]: Analyzing trace with hash 2055371746, now seen corresponding path program 12 times [2020-10-28 09:37:39,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:37:39,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [487853859] [2020-10-28 09:37:39,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:37:39,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:39,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:39,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:39,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:40,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:40,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:40,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:40,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:40,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:40,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:40,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:40,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:40,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:42,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:42,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:43,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:43,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:43,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:43,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:44,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:44,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-28 09:37:44,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-28 09:37:44,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 09:37:44,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:44,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:44,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 09:37:44,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 09:37:44,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-28 09:37:44,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:44,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:37:44,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:44,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:44,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:44,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:37:44,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:44,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:37:44,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:44,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:44,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:37:44,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:44,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:37:44,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:44,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 09:37:44,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:44,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:44,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:44,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:37:44,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:44,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:37:44,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:44,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:44,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:37:44,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:44,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:37:44,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:44,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-28 09:37:44,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:44,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:44,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:44,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:37:44,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:44,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:37:44,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:44,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:44,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:37:44,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:37:44,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:37:44,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:37:44,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-28 09:37:44,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:44,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:44,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:44,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:37:44,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:44,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:37:44,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:44,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:44,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:37:44,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:37:44,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:37:44,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:44,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-28 09:37:44,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:44,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:44,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:44,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:37:44,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:44,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:37:44,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:44,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:44,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:37:44,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:37:44,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:37:44,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:44,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-28 09:37:44,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:44,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:44,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:44,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:37:44,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:44,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:37:44,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:44,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:44,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:37:44,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:37:44,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:37:44,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:37:44,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-28 09:37:44,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:44,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:44,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:44,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:37:44,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:44,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:37:44,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:44,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:44,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:37:44,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:37:44,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:37:44,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:44,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-28 09:37:44,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:44,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:44,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:44,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:37:44,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:44,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:37:44,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:44,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:44,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:37:44,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:37:44,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:37:44,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:44,501 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 46 proven. 49 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2020-10-28 09:37:44,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [487853859] [2020-10-28 09:37:44,501 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:37:44,501 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-28 09:37:44,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181710709] [2020-10-28 09:37:44,502 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-28 09:37:44,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:37:44,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-28 09:37:44,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2020-10-28 09:37:44,503 INFO L87 Difference]: Start difference. First operand 108 states and 118 transitions. Second operand 16 states. [2020-10-28 09:37:45,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:37:45,266 INFO L93 Difference]: Finished difference Result 197 states and 217 transitions. [2020-10-28 09:37:45,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 09:37:45,267 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 105 [2020-10-28 09:37:45,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:37:45,268 INFO L225 Difference]: With dead ends: 197 [2020-10-28 09:37:45,268 INFO L226 Difference]: Without dead ends: 111 [2020-10-28 09:37:45,270 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=120, Invalid=342, Unknown=0, NotChecked=0, Total=462 [2020-10-28 09:37:45,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-28 09:37:45,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 110. [2020-10-28 09:37:45,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-28 09:37:45,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 120 transitions. [2020-10-28 09:37:45,293 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 120 transitions. Word has length 105 [2020-10-28 09:37:45,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:37:45,294 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 120 transitions. [2020-10-28 09:37:45,294 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-28 09:37:45,294 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 120 transitions. [2020-10-28 09:37:45,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-28 09:37:45,295 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:37:45,295 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 4, 4, 4, 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 09:37:45,295 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-28 09:37:45,295 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:37:45,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:37:45,296 INFO L82 PathProgramCache]: Analyzing trace with hash -751862748, now seen corresponding path program 13 times [2020-10-28 09:37:45,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:37:45,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [942025625] [2020-10-28 09:37:45,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:37:45,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:45,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:45,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:46,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:46,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:46,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:46,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:46,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:46,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:47,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:48,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:49,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:50,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:50,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-28 09:37:50,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 09:37:50,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 09:37:50,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:50,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:50,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-28 09:37:50,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 09:37:50,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-28 09:37:50,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:51,308 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 30 [2020-10-28 09:37:52,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:37:52,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:52,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:52,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:52,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:37:52,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:52,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:37:52,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:52,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:52,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:37:52,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:52,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:37:52,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:52,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 09:37:52,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:52,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:52,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:52,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:37:52,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:52,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:37:52,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:52,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:52,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:37:52,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:52,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:37:52,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:52,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 09:37:52,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:52,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:52,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:52,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:37:52,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:52,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:37:52,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:52,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:52,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:37:52,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:52,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:37:52,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:52,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-28 09:37:52,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:52,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:52,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:52,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:37:52,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:52,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:37:52,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:52,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:52,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:37:52,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:52,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:37:52,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:52,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-28 09:37:52,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:52,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:52,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:52,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:37:52,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:52,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:37:52,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:52,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:52,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:37:52,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:52,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:37:52,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:52,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-28 09:37:52,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:52,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:52,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:52,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:37:52,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:52,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:37:52,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:52,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:52,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:37:52,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:52,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:37:52,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:52,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-28 09:37:52,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:52,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:52,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:52,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:37:52,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:52,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:37:52,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:52,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:52,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:37:52,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:52,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:37:52,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:52,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-28 09:37:52,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:52,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:52,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:52,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:37:52,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:52,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:37:52,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:52,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:52,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:37:52,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:52,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:37:52,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:52,182 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 12 proven. 152 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-10-28 09:37:52,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [942025625] [2020-10-28 09:37:52,183 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:37:52,183 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-28 09:37:52,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599190736] [2020-10-28 09:37:52,183 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-28 09:37:52,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:37:52,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-28 09:37:52,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=695, Unknown=0, NotChecked=0, Total=756 [2020-10-28 09:37:52,184 INFO L87 Difference]: Start difference. First operand 110 states and 120 transitions. Second operand 28 states. [2020-10-28 09:38:02,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:38:02,462 INFO L93 Difference]: Finished difference Result 438 states and 506 transitions. [2020-10-28 09:38:02,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2020-10-28 09:38:02,463 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 107 [2020-10-28 09:38:02,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:38:02,467 INFO L225 Difference]: With dead ends: 438 [2020-10-28 09:38:02,467 INFO L226 Difference]: Without dead ends: 375 [2020-10-28 09:38:02,470 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2583 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=1057, Invalid=8843, Unknown=0, NotChecked=0, Total=9900 [2020-10-28 09:38:02,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2020-10-28 09:38:02,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 214. [2020-10-28 09:38:02,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-10-28 09:38:02,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 240 transitions. [2020-10-28 09:38:02,531 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 240 transitions. Word has length 107 [2020-10-28 09:38:02,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:38:02,531 INFO L481 AbstractCegarLoop]: Abstraction has 214 states and 240 transitions. [2020-10-28 09:38:02,531 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-28 09:38:02,532 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 240 transitions. [2020-10-28 09:38:02,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-28 09:38:02,533 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:38:02,534 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:38:02,534 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-28 09:38:02,534 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:38:02,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:38:02,534 INFO L82 PathProgramCache]: Analyzing trace with hash -550038814, now seen corresponding path program 5 times [2020-10-28 09:38:02,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:38:02,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [583033519] [2020-10-28 09:38:02,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:38:02,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:02,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:02,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:03,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:03,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:03,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:03,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:07,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:07,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-28 09:38:07,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 09:38:07,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-28 09:38:07,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:07,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:07,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-28 09:38:07,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 09:38:07,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-28 09:38:07,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:38:07,917 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 16 [2020-10-28 09:38:10,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:38:10,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:10,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:10,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:10,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:38:10,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:38:10,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:38:10,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:10,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:10,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:38:10,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:38:10,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:38:10,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:38:10,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 09:38:10,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:10,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:10,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:10,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:38:10,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:38:10,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:38:10,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:10,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:10,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:38:10,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:38:10,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:38:10,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:38:10,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 09:38:10,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:10,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:10,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:10,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:38:10,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:38:10,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:38:10,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:10,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:10,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:38:10,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:38:10,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:38:10,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:38:10,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-28 09:38:10,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:10,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:10,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:10,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:38:10,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:38:10,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:38:10,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:10,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:10,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:38:10,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:38:10,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:38:10,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:38:10,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-28 09:38:10,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:10,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:10,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:10,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:38:10,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:38:10,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 09:38:10,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:10,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:10,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:38:10,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:38:10,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:38:10,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:38:10,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-28 09:38:10,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:10,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:10,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:10,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:38:10,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:38:10,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 09:38:10,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:10,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:10,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:38:10,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:38:10,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:38:10,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:38:10,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-28 09:38:10,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:10,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:10,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:10,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:38:10,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:38:10,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:38:10,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:10,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:10,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:38:10,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:38:10,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:38:10,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:38:10,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-28 09:38:10,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:10,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:10,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:10,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:38:10,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:38:10,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:38:10,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:10,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:10,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:38:10,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:38:10,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:38:10,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:38:10,467 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 16 proven. 148 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-10-28 09:38:10,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [583033519] [2020-10-28 09:38:10,468 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:38:10,468 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-28 09:38:10,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99443347] [2020-10-28 09:38:10,468 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-28 09:38:10,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:38:10,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-28 09:38:10,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=662, Unknown=0, NotChecked=0, Total=756 [2020-10-28 09:38:10,469 INFO L87 Difference]: Start difference. First operand 214 states and 240 transitions. Second operand 28 states. [2020-10-28 09:38:11,177 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2020-10-28 09:38:13,101 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 63 [2020-10-28 09:38:14,398 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 60 [2020-10-28 09:38:14,797 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2020-10-28 09:38:15,154 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 67 [2020-10-28 09:38:15,433 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 69 [2020-10-28 09:38:15,627 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 47 [2020-10-28 09:38:15,830 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 49 [2020-10-28 09:38:16,225 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 70 [2020-10-28 09:38:16,723 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 74 [2020-10-28 09:38:17,009 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 77 [2020-10-28 09:38:17,345 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 75 [2020-10-28 09:38:17,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:38:17,371 INFO L93 Difference]: Finished difference Result 251 states and 278 transitions. [2020-10-28 09:38:17,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-10-28 09:38:17,372 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 107 [2020-10-28 09:38:17,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:38:17,374 INFO L225 Difference]: With dead ends: 251 [2020-10-28 09:38:17,374 INFO L226 Difference]: Without dead ends: 240 [2020-10-28 09:38:17,376 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 636 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=592, Invalid=2948, Unknown=0, NotChecked=0, Total=3540 [2020-10-28 09:38:17,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2020-10-28 09:38:17,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 201. [2020-10-28 09:38:17,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2020-10-28 09:38:17,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 220 transitions. [2020-10-28 09:38:17,415 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 220 transitions. Word has length 107 [2020-10-28 09:38:17,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:38:17,415 INFO L481 AbstractCegarLoop]: Abstraction has 201 states and 220 transitions. [2020-10-28 09:38:17,415 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-28 09:38:17,415 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 220 transitions. [2020-10-28 09:38:17,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-28 09:38:17,416 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:38:17,417 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 7, 7, 6, 6, 6, 6, 6, 4, 4, 4, 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 09:38:17,417 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-28 09:38:17,417 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:38:17,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:38:17,417 INFO L82 PathProgramCache]: Analyzing trace with hash -1264749594, now seen corresponding path program 14 times [2020-10-28 09:38:17,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:38:17,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [504806720] [2020-10-28 09:38:17,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:38:17,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:17,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:17,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:17,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:19,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:20,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:20,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:20,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:20,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:21,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:21,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:22,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:22,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-28 09:38:22,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 09:38:22,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 09:38:22,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:22,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:22,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-28 09:38:22,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-28 09:38:22,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-28 09:38:22,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:38:22,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:38:22,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:22,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:22,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:22,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:38:22,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:38:22,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:38:22,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:22,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:22,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:38:22,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:38:22,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:38:22,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:38:22,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 09:38:22,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:22,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:22,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:22,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:38:22,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:38:22,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:38:22,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:22,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:22,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:38:22,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:38:22,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:38:22,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:38:22,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-28 09:38:22,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:22,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:22,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:22,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:38:22,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:38:22,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:38:22,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:22,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:22,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:38:22,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:38:22,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:38:22,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:38:22,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-28 09:38:22,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:22,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:22,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:22,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:38:22,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:38:22,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:38:22,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:22,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:22,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:38:22,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:38:22,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:38:22,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:38:22,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-28 09:38:22,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:22,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:22,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:22,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:38:22,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:38:22,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:38:22,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:22,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:22,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:38:22,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:38:22,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:38:22,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:38:22,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-28 09:38:22,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:22,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:22,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:22,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:38:22,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:38:22,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:38:22,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:22,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:22,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:38:22,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:38:22,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:38:22,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:38:22,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-28 09:38:22,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:22,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:22,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:22,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:38:22,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:38:22,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:38:22,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:22,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:22,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:38:22,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:38:22,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:38:22,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:38:22,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-28 09:38:22,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:22,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:22,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:22,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:38:22,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:38:22,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:38:22,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:22,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:22,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:38:22,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:38:22,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:38:22,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:38:22,991 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 12 proven. 106 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2020-10-28 09:38:22,991 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [504806720] [2020-10-28 09:38:22,991 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:38:22,991 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-28 09:38:22,992 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120323591] [2020-10-28 09:38:22,992 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-28 09:38:22,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:38:22,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-28 09:38:22,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=304, Unknown=0, NotChecked=0, Total=342 [2020-10-28 09:38:22,993 INFO L87 Difference]: Start difference. First operand 201 states and 220 transitions. Second operand 19 states. [2020-10-28 09:38:26,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:38:26,413 INFO L93 Difference]: Finished difference Result 464 states and 558 transitions. [2020-10-28 09:38:26,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-10-28 09:38:26,414 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 109 [2020-10-28 09:38:26,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:38:26,419 INFO L225 Difference]: With dead ends: 464 [2020-10-28 09:38:26,420 INFO L226 Difference]: Without dead ends: 461 [2020-10-28 09:38:26,423 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 830 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=345, Invalid=3077, Unknown=0, NotChecked=0, Total=3422 [2020-10-28 09:38:26,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2020-10-28 09:38:26,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 238. [2020-10-28 09:38:26,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-10-28 09:38:26,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 267 transitions. [2020-10-28 09:38:26,482 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 267 transitions. Word has length 109 [2020-10-28 09:38:26,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:38:26,482 INFO L481 AbstractCegarLoop]: Abstraction has 238 states and 267 transitions. [2020-10-28 09:38:26,482 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-28 09:38:26,483 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 267 transitions. [2020-10-28 09:38:26,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-28 09:38:26,484 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:38:26,484 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 7, 7, 6, 6, 6, 6, 6, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:38:26,484 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-28 09:38:26,484 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:38:26,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:38:26,485 INFO L82 PathProgramCache]: Analyzing trace with hash -1062925660, now seen corresponding path program 6 times [2020-10-28 09:38:26,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:38:26,485 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1666302190] [2020-10-28 09:38:26,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:38:26,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:26,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:26,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:26,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:27,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:29,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:29,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:29,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:29,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:29,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:31,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:31,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-28 09:38:31,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 09:38:31,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 09:38:31,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:31,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:31,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-28 09:38:31,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-28 09:38:31,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-28 09:38:31,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:38:31,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:38:31,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:31,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:31,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:31,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:38:31,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:38:31,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:38:31,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:31,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:31,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:38:31,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:38:31,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:38:31,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:38:31,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 09:38:31,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:31,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:31,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:31,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:38:31,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:38:31,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:38:31,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:31,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:31,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:38:31,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:38:31,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:38:31,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:38:31,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-28 09:38:31,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:31,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:31,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:31,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:38:31,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:38:31,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:38:31,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:31,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:31,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:38:31,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:38:31,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:38:31,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:38:31,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-28 09:38:31,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:31,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:31,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:31,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:38:32,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:38:32,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:38:32,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:32,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:32,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:38:32,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:38:32,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:38:32,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:38:32,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-28 09:38:32,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:32,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:32,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:32,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:38:32,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:38:32,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:38:32,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:32,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:32,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:38:32,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:38:32,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:38:32,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:38:32,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-28 09:38:32,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:32,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:32,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:32,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:38:32,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:38:32,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:38:32,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:32,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:32,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:38:32,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:38:32,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:38:32,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:38:32,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-28 09:38:32,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:32,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:32,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:32,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:38:32,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:38:32,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:38:32,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:32,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:32,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:38:32,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:38:32,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:38:32,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:38:32,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-28 09:38:32,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:32,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:32,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:32,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:38:32,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:38:32,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:38:32,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:32,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:32,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:38:32,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:38:32,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:38:32,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:38:32,038 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 12 proven. 106 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2020-10-28 09:38:32,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1666302190] [2020-10-28 09:38:32,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:38:32,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-28 09:38:32,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326693833] [2020-10-28 09:38:32,039 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-28 09:38:32,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:38:32,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-28 09:38:32,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2020-10-28 09:38:32,048 INFO L87 Difference]: Start difference. First operand 238 states and 267 transitions. Second operand 20 states. [2020-10-28 09:38:35,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:38:35,092 INFO L93 Difference]: Finished difference Result 416 states and 502 transitions. [2020-10-28 09:38:35,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-10-28 09:38:35,093 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 109 [2020-10-28 09:38:35,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:38:35,096 INFO L225 Difference]: With dead ends: 416 [2020-10-28 09:38:35,096 INFO L226 Difference]: Without dead ends: 413 [2020-10-28 09:38:35,098 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 787 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=321, Invalid=2985, Unknown=0, NotChecked=0, Total=3306 [2020-10-28 09:38:35,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2020-10-28 09:38:35,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 209. [2020-10-28 09:38:35,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2020-10-28 09:38:35,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 228 transitions. [2020-10-28 09:38:35,149 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 228 transitions. Word has length 109 [2020-10-28 09:38:35,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:38:35,149 INFO L481 AbstractCegarLoop]: Abstraction has 209 states and 228 transitions. [2020-10-28 09:38:35,149 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-28 09:38:35,149 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 228 transitions. [2020-10-28 09:38:35,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-28 09:38:35,150 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:38:35,151 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 4, 4, 4, 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 09:38:35,151 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-28 09:38:35,151 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:38:35,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:38:35,151 INFO L82 PathProgramCache]: Analyzing trace with hash -10896431, now seen corresponding path program 15 times [2020-10-28 09:38:35,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:38:35,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [784632935] [2020-10-28 09:38:35,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:38:35,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:35,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:35,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:36,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:37,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:38,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:40,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:40,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-28 09:38:40,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 09:38:40,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 09:38:40,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:40,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:40,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-28 09:38:40,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 09:38:40,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-28 09:38:40,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:38:42,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:38:42,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:42,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:42,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:42,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:38:42,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:38:42,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:38:42,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:42,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:42,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:38:42,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:38:42,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:38:42,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:38:42,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 09:38:42,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:42,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:42,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:42,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:38:42,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:38:42,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:38:42,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:42,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:42,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:38:42,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:38:42,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:38:42,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:38:42,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 09:38:42,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:42,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:42,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:42,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:38:42,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:38:42,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:38:42,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:42,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:42,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:38:42,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:38:42,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:38:42,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:38:42,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-28 09:38:42,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:42,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:42,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:42,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:38:42,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:38:42,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:38:42,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:42,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:42,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:38:42,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:38:42,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:38:42,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:38:42,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-28 09:38:42,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:42,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:42,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:42,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:38:42,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:38:42,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:38:42,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:42,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:42,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:38:42,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:38:42,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:38:42,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:38:42,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-28 09:38:42,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:42,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:42,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:42,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:38:42,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:38:42,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:38:42,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:42,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:42,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:38:42,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:38:42,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:38:42,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:38:42,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-28 09:38:42,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:42,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:42,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:42,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:38:42,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:38:42,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:38:42,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:42,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:42,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:38:42,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:38:42,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:38:42,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:38:42,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-28 09:38:42,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:42,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:42,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:42,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:38:42,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:38:42,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:38:42,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:42,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:42,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:38:42,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:38:42,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:38:42,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:38:42,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-28 09:38:42,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:42,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:42,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:38:42,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:38:42,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:38:42,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:38:42,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:38:42,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:38:42,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:38:42,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:38:42,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:38:42,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:38:42,147 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 98 proven. 94 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2020-10-28 09:38:42,147 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [784632935] [2020-10-28 09:38:42,147 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:38:42,147 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-28 09:38:42,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716877991] [2020-10-28 09:38:42,148 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-28 09:38:42,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:38:42,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-28 09:38:42,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=649, Unknown=0, NotChecked=0, Total=756 [2020-10-28 09:38:42,149 INFO L87 Difference]: Start difference. First operand 209 states and 228 transitions. Second operand 28 states. [2020-10-28 09:38:44,410 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 41 [2020-10-28 09:38:47,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:38:47,401 INFO L93 Difference]: Finished difference Result 254 states and 278 transitions. [2020-10-28 09:38:47,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-10-28 09:38:47,402 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 115 [2020-10-28 09:38:47,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:38:47,404 INFO L225 Difference]: With dead ends: 254 [2020-10-28 09:38:47,404 INFO L226 Difference]: Without dead ends: 216 [2020-10-28 09:38:47,406 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 786 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=603, Invalid=2937, Unknown=0, NotChecked=0, Total=3540 [2020-10-28 09:38:47,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-10-28 09:38:47,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 209. [2020-10-28 09:38:47,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2020-10-28 09:38:47,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 227 transitions. [2020-10-28 09:38:47,454 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 227 transitions. Word has length 115 [2020-10-28 09:38:47,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:38:47,454 INFO L481 AbstractCegarLoop]: Abstraction has 209 states and 227 transitions. [2020-10-28 09:38:47,454 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-28 09:38:47,454 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 227 transitions. [2020-10-28 09:38:47,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-28 09:38:47,455 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:38:47,456 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:38:47,456 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-28 09:38:47,456 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:38:47,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:38:47,456 INFO L82 PathProgramCache]: Analyzing trace with hash -742863857, now seen corresponding path program 5 times [2020-10-28 09:38:47,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:38:47,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [27737142] [2020-10-28 09:38:47,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:38:47,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:38:47,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:47,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:48,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:50,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:38:50,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking...