/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/forester-heap/dll-simple-white-blue-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 14:29:50,067 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 14:29:50,070 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 14:29:50,104 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 14:29:50,105 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 14:29:50,106 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 14:29:50,108 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 14:29:50,110 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 14:29:50,112 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 14:29:50,113 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 14:29:50,114 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 14:29:50,116 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 14:29:50,116 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 14:29:50,117 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 14:29:50,119 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 14:29:50,120 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 14:29:50,121 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 14:29:50,122 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 14:29:50,136 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 14:29:50,139 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 14:29:50,141 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 14:29:50,142 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 14:29:50,143 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 14:29:50,144 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 14:29:50,148 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 14:29:50,148 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 14:29:50,148 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 14:29:50,149 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 14:29:50,150 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 14:29:50,151 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 14:29:50,151 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 14:29:50,152 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 14:29:50,153 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 14:29:50,154 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 14:29:50,155 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 14:29:50,156 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 14:29:50,156 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 14:29:50,157 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 14:29:50,157 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 14:29:50,158 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 14:29:50,159 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 14:29:50,161 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 14:29:50,188 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 14:29:50,188 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 14:29:50,190 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 14:29:50,190 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 14:29:50,190 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 14:29:50,191 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 14:29:50,191 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 14:29:50,191 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 14:29:50,191 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 14:29:50,192 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 14:29:50,192 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 14:29:50,192 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 14:29:50,192 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 14:29:50,193 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 14:29:50,193 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 14:29:50,193 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 14:29:50,193 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 14:29:50,194 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 14:29:50,194 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 14:29:50,194 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 14:29:50,194 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 14:29:50,194 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:29:50,195 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 14:29:50,195 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 14:29:50,195 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 14:29:50,195 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 14:29:50,196 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 14:29:50,196 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 14:29:50,196 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 14:29:50,196 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 14:29:50,622 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 14:29:50,646 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 14:29:50,649 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 14:29:50,651 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 14:29:50,651 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 14:29:50,653 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-simple-white-blue-2.i [2020-10-28 14:29:50,742 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e44e35b45/a8119efc82214453aa32e0ce4b32166d/FLAGb866bc8c8 [2020-10-28 14:29:51,564 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 14:29:51,564 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/dll-simple-white-blue-2.i [2020-10-28 14:29:51,586 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e44e35b45/a8119efc82214453aa32e0ce4b32166d/FLAGb866bc8c8 [2020-10-28 14:29:51,845 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e44e35b45/a8119efc82214453aa32e0ce4b32166d [2020-10-28 14:29:51,849 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 14:29:51,859 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 14:29:51,863 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 14:29:51,863 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 14:29:51,867 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 14:29:51,867 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:29:51" (1/1) ... [2020-10-28 14:29:51,873 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c2684f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:29:51, skipping insertion in model container [2020-10-28 14:29:51,873 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:29:51" (1/1) ... [2020-10-28 14:29:51,882 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 14:29:51,950 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 14:29:52,303 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:29:52,316 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 14:29:52,373 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:29:52,435 INFO L208 MainTranslator]: Completed translation [2020-10-28 14:29:52,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:29:52 WrapperNode [2020-10-28 14:29:52,435 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 14:29:52,437 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 14:29:52,437 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 14:29:52,437 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 14:29:52,450 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:29:52" (1/1) ... [2020-10-28 14:29:52,450 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:29:52" (1/1) ... [2020-10-28 14:29:52,466 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:29:52" (1/1) ... [2020-10-28 14:29:52,466 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:29:52" (1/1) ... [2020-10-28 14:29:52,500 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:29:52" (1/1) ... [2020-10-28 14:29:52,507 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:29:52" (1/1) ... [2020-10-28 14:29:52,511 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:29:52" (1/1) ... [2020-10-28 14:29:52,517 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 14:29:52,518 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 14:29:52,518 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 14:29:52,518 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 14:29:52,519 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:29:52" (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 14:29:52,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 14:29:52,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 14:29:52,603 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 14:29:52,603 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 14:29:52,604 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-28 14:29:52,604 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-28 14:29:52,604 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-28 14:29:52,605 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-28 14:29:52,605 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-28 14:29:52,605 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-28 14:29:52,607 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-28 14:29:52,608 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-28 14:29:52,608 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-28 14:29:52,608 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-28 14:29:52,608 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-28 14:29:52,609 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-28 14:29:52,609 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-28 14:29:52,609 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-28 14:29:52,610 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-28 14:29:52,610 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-28 14:29:52,610 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-28 14:29:52,610 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-28 14:29:52,610 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-28 14:29:52,610 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-28 14:29:52,611 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-28 14:29:52,614 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-28 14:29:52,614 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-28 14:29:52,614 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-28 14:29:52,614 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-28 14:29:52,614 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-28 14:29:52,614 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-28 14:29:52,614 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-28 14:29:52,615 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-28 14:29:52,615 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-28 14:29:52,615 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-28 14:29:52,615 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-28 14:29:52,615 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-28 14:29:52,615 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-28 14:29:52,615 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-28 14:29:52,615 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-28 14:29:52,615 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-28 14:29:52,615 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-28 14:29:52,616 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-28 14:29:52,616 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-28 14:29:52,616 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-28 14:29:52,617 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-28 14:29:52,617 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-28 14:29:52,617 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-28 14:29:52,617 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-28 14:29:52,617 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-28 14:29:52,617 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-28 14:29:52,617 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-28 14:29:52,618 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-28 14:29:52,618 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-28 14:29:52,618 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-28 14:29:52,619 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-28 14:29:52,619 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-28 14:29:52,619 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-28 14:29:52,619 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-28 14:29:52,619 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-28 14:29:52,620 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-28 14:29:52,620 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-28 14:29:52,620 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-28 14:29:52,620 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 14:29:52,620 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-28 14:29:52,620 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-28 14:29:52,620 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-28 14:29:52,620 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 14:29:52,620 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-28 14:29:52,621 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-28 14:29:52,621 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-28 14:29:52,622 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-28 14:29:52,623 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-28 14:29:52,623 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-28 14:29:52,623 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-28 14:29:52,623 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-28 14:29:52,623 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-28 14:29:52,623 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-28 14:29:52,624 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-28 14:29:52,624 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-28 14:29:52,624 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-28 14:29:52,624 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-28 14:29:52,624 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-28 14:29:52,624 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-28 14:29:52,624 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-28 14:29:52,624 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-28 14:29:52,624 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-28 14:29:52,624 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-28 14:29:52,624 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-28 14:29:52,624 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-28 14:29:52,625 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-28 14:29:52,625 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-28 14:29:52,625 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-28 14:29:52,625 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-28 14:29:52,625 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-28 14:29:52,625 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-28 14:29:52,625 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-28 14:29:52,625 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-28 14:29:52,625 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-28 14:29:52,626 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-28 14:29:52,626 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-28 14:29:52,626 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-28 14:29:52,626 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-28 14:29:52,626 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-28 14:29:52,626 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-28 14:29:52,626 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-28 14:29:52,626 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-28 14:29:52,626 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 14:29:52,627 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 14:29:52,627 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-28 14:29:52,627 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-28 14:29:52,627 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 14:29:52,627 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 14:29:52,627 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 14:29:52,627 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-28 14:29:52,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-28 14:29:52,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 14:29:52,628 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-28 14:29:52,628 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 14:29:52,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 14:29:52,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 14:29:52,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 14:29:52,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 14:29:53,416 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 14:29:53,416 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-28 14:29:53,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:29:53 BoogieIcfgContainer [2020-10-28 14:29:53,418 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 14:29:53,420 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 14:29:53,420 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 14:29:53,423 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 14:29:53,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 02:29:51" (1/3) ... [2020-10-28 14:29:53,425 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@accb0ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:29:53, skipping insertion in model container [2020-10-28 14:29:53,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:29:52" (2/3) ... [2020-10-28 14:29:53,425 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@accb0ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:29:53, skipping insertion in model container [2020-10-28 14:29:53,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:29:53" (3/3) ... [2020-10-28 14:29:53,427 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-simple-white-blue-2.i [2020-10-28 14:29:53,439 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 14:29:53,444 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 14:29:53,457 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 14:29:53,484 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 14:29:53,484 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 14:29:53,484 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 14:29:53,485 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 14:29:53,485 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 14:29:53,485 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 14:29:53,485 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 14:29:53,485 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 14:29:53,503 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-10-28 14:29:53,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-28 14:29:53,508 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:29:53,509 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:29:53,510 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:29:53,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:29:53,516 INFO L82 PathProgramCache]: Analyzing trace with hash 1655213968, now seen corresponding path program 1 times [2020-10-28 14:29:53,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:29:53,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [867825490] [2020-10-28 14:29:53,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:29:53,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:29:53,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:29:53,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:29:53,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:29:54,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:29:54,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 14:29:54,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:29:54,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 773 [2020-10-28 14:29:54,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:29:54,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:29:54,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:29:54,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 14:29:54,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:29:54,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 14:29:54,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:29:54,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:29:54,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:29:54,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:29:54,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:29:54,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:29:54,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 14:29:54,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:29:54,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:29:54,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:29:54,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:29:54,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:29:54,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:29:54,535 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 14:29:54,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [867825490] [2020-10-28 14:29:54,538 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:29:54,538 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 14:29:54,539 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94303626] [2020-10-28 14:29:54,544 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-28 14:29:54,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:29:54,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-28 14:29:54,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 14:29:54,561 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2020-10-28 14:29:54,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:29:54,685 INFO L93 Difference]: Finished difference Result 62 states and 94 transitions. [2020-10-28 14:29:54,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 14:29:54,686 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-28 14:29:54,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:29:54,695 INFO L225 Difference]: With dead ends: 62 [2020-10-28 14:29:54,696 INFO L226 Difference]: Without dead ends: 26 [2020-10-28 14:29:54,699 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 14:29:54,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-28 14:29:54,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-10-28 14:29:54,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-28 14:29:54,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2020-10-28 14:29:54,749 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 17 [2020-10-28 14:29:54,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:29:54,750 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2020-10-28 14:29:54,750 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-28 14:29:54,752 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2020-10-28 14:29:54,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-28 14:29:54,754 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:29:54,754 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:29:54,754 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 14:29:54,754 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:29:54,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:29:54,755 INFO L82 PathProgramCache]: Analyzing trace with hash 1708326079, now seen corresponding path program 1 times [2020-10-28 14:29:54,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:29:54,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1615139344] [2020-10-28 14:29:54,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:29:54,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:29:54,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:29:55,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:29:55,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-28 14:29:55,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:29:55,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 257 [2020-10-28 14:29:55,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:29:55,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:29:55,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:29:55,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:29:55,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 14:29:55,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:29:55,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:29:55,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:29:55,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:29:55,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:29:55,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:29:55,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:29:55,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 14:29:55,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:29:55,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:29:55,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:29:55,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:29:55,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:29:55,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:29:55,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:29:55,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1615139344] [2020-10-28 14:29:55,218 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:29:55,218 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-28 14:29:55,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817211549] [2020-10-28 14:29:55,220 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 14:29:55,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:29:55,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 14:29:55,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-28 14:29:55,222 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand 8 states. [2020-10-28 14:29:55,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:29:55,582 INFO L93 Difference]: Finished difference Result 59 states and 75 transitions. [2020-10-28 14:29:55,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 14:29:55,583 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-10-28 14:29:55,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:29:55,586 INFO L225 Difference]: With dead ends: 59 [2020-10-28 14:29:55,586 INFO L226 Difference]: Without dead ends: 55 [2020-10-28 14:29:55,587 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-10-28 14:29:55,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-28 14:29:55,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 36. [2020-10-28 14:29:55,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-28 14:29:55,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 45 transitions. [2020-10-28 14:29:55,598 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 45 transitions. Word has length 19 [2020-10-28 14:29:55,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:29:55,599 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 45 transitions. [2020-10-28 14:29:55,599 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 14:29:55,599 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 45 transitions. [2020-10-28 14:29:55,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-28 14:29:55,600 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:29:55,600 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:29:55,600 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 14:29:55,600 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:29:55,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:29:55,601 INFO L82 PathProgramCache]: Analyzing trace with hash -1907723868, now seen corresponding path program 1 times [2020-10-28 14:29:55,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:29:55,602 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [404891310] [2020-10-28 14:29:55,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:29:55,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:29:55,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:29:55,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:29:55,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:29:56,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:29:56,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-28 14:29:56,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:29:56,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 582 [2020-10-28 14:29:56,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:29:56,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:29:56,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:29:56,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:29:56,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 14:29:56,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:29:56,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:29:56,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:29:56,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:29:56,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:29:56,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:29:56,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:29:56,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:29:56,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:29:56,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:29:56,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:29:56,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:29:56,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:29:56,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:29:56,356 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:29:56,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [404891310] [2020-10-28 14:29:56,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:29:56,357 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 14:29:56,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138435213] [2020-10-28 14:29:56,358 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 14:29:56,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:29:56,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 14:29:56,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-28 14:29:56,360 INFO L87 Difference]: Start difference. First operand 36 states and 45 transitions. Second operand 8 states. [2020-10-28 14:29:56,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:29:56,862 INFO L93 Difference]: Finished difference Result 74 states and 95 transitions. [2020-10-28 14:29:56,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 14:29:56,862 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2020-10-28 14:29:56,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:29:56,864 INFO L225 Difference]: With dead ends: 74 [2020-10-28 14:29:56,864 INFO L226 Difference]: Without dead ends: 61 [2020-10-28 14:29:56,865 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-10-28 14:29:56,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-28 14:29:56,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 35. [2020-10-28 14:29:56,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-28 14:29:56,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 43 transitions. [2020-10-28 14:29:56,873 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 43 transitions. Word has length 21 [2020-10-28 14:29:56,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:29:56,873 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 43 transitions. [2020-10-28 14:29:56,874 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 14:29:56,874 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 43 transitions. [2020-10-28 14:29:56,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-28 14:29:56,875 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:29:56,875 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:29:56,875 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 14:29:56,875 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:29:56,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:29:56,876 INFO L82 PathProgramCache]: Analyzing trace with hash 1515612570, now seen corresponding path program 1 times [2020-10-28 14:29:56,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:29:56,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [497852727] [2020-10-28 14:29:56,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:29:56,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:29:56,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:29:57,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:29:57,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-28 14:29:57,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:29:57,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 248 [2020-10-28 14:29:57,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:29:57,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:29:57,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 14:29:57,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:29:57,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 14:29:57,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:29:57,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:29:57,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:29:57,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:29:57,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:29:57,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:29:57,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:29:57,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:29:57,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:29:57,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:29:57,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:29:57,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:29:57,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:29:57,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:29:57,382 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:29:57,383 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [497852727] [2020-10-28 14:29:57,383 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:29:57,383 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 14:29:57,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260755962] [2020-10-28 14:29:57,384 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 14:29:57,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:29:57,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 14:29:57,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-28 14:29:57,385 INFO L87 Difference]: Start difference. First operand 35 states and 43 transitions. Second operand 9 states. [2020-10-28 14:29:57,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:29:57,894 INFO L93 Difference]: Finished difference Result 72 states and 92 transitions. [2020-10-28 14:29:57,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 14:29:57,895 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-28 14:29:57,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:29:57,896 INFO L225 Difference]: With dead ends: 72 [2020-10-28 14:29:57,896 INFO L226 Difference]: Without dead ends: 68 [2020-10-28 14:29:57,897 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2020-10-28 14:29:57,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-28 14:29:57,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 41. [2020-10-28 14:29:57,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-28 14:29:57,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 50 transitions. [2020-10-28 14:29:57,905 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 50 transitions. Word has length 21 [2020-10-28 14:29:57,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:29:57,906 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 50 transitions. [2020-10-28 14:29:57,906 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 14:29:57,906 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 50 transitions. [2020-10-28 14:29:57,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-28 14:29:57,907 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:29:57,907 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:29:57,907 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 14:29:57,907 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:29:57,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:29:57,908 INFO L82 PathProgramCache]: Analyzing trace with hash 1991786825, now seen corresponding path program 2 times [2020-10-28 14:29:57,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:29:57,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1373640294] [2020-10-28 14:29:57,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:29:57,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:29:57,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:29:58,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:29:58,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-28 14:29:58,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:29:58,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-28 14:29:58,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:29:58,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:29:58,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:29:58,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 14:29:58,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 14:29:58,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:29:58,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:29:58,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:29:58,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:29:58,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:29:58,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:29:58,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:29:58,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:29:58,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:29:58,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:29:58,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:29:58,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:29:58,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:29:58,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:29:58,080 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-28 14:29:58,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1373640294] [2020-10-28 14:29:58,080 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:29:58,080 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 14:29:58,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691201778] [2020-10-28 14:29:58,081 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 14:29:58,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:29:58,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 14:29:58,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 14:29:58,082 INFO L87 Difference]: Start difference. First operand 41 states and 50 transitions. Second operand 6 states. [2020-10-28 14:29:58,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:29:58,243 INFO L93 Difference]: Finished difference Result 56 states and 67 transitions. [2020-10-28 14:29:58,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 14:29:58,244 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-10-28 14:29:58,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:29:58,245 INFO L225 Difference]: With dead ends: 56 [2020-10-28 14:29:58,245 INFO L226 Difference]: Without dead ends: 41 [2020-10-28 14:29:58,246 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-28 14:29:58,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-28 14:29:58,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 36. [2020-10-28 14:29:58,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-28 14:29:58,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2020-10-28 14:29:58,268 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 23 [2020-10-28 14:29:58,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:29:58,269 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2020-10-28 14:29:58,269 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 14:29:58,269 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2020-10-28 14:29:58,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-28 14:29:58,271 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:29:58,271 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 14:29:58,271 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 14:29:58,271 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:29:58,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:29:58,272 INFO L82 PathProgramCache]: Analyzing trace with hash -1270005385, now seen corresponding path program 1 times [2020-10-28 14:29:58,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:29:58,273 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [423616328] [2020-10-28 14:29:58,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:29:58,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:29:58,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:29:58,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:29:58,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:29:58,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-28 14:29:58,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:29:58,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 352 [2020-10-28 14:29:58,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:29:58,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:29:58,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:29:58,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:29:58,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 14:29:58,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:29:58,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:29:58,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:29:58,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:29:58,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:29:58,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:29:58,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:29:58,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:29:58,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:29:58,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:29:58,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:29:58,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:29:58,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:29:58,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:29:58,730 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 14:29:58,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [423616328] [2020-10-28 14:29:58,730 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:29:58,730 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 14:29:58,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672044794] [2020-10-28 14:29:58,731 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 14:29:58,731 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:29:58,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 14:29:58,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 14:29:58,732 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 6 states. [2020-10-28 14:29:58,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:29:58,977 INFO L93 Difference]: Finished difference Result 65 states and 80 transitions. [2020-10-28 14:29:58,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 14:29:58,978 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-10-28 14:29:58,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:29:58,979 INFO L225 Difference]: With dead ends: 65 [2020-10-28 14:29:58,979 INFO L226 Difference]: Without dead ends: 54 [2020-10-28 14:29:58,980 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 14:29:58,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-28 14:29:58,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 41. [2020-10-28 14:29:58,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-28 14:29:58,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 50 transitions. [2020-10-28 14:29:58,987 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 50 transitions. Word has length 23 [2020-10-28 14:29:58,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:29:58,987 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 50 transitions. [2020-10-28 14:29:58,987 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 14:29:58,987 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 50 transitions. [2020-10-28 14:29:58,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-28 14:29:58,988 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:29:58,988 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 14:29:58,988 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 14:29:58,989 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:29:58,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:29:58,989 INFO L82 PathProgramCache]: Analyzing trace with hash -1663032395, now seen corresponding path program 1 times [2020-10-28 14:29:58,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:29:58,990 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [269059320] [2020-10-28 14:29:58,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:29:59,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:29:59,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:29:59,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:29:59,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:29:59,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:29:59,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:29:59,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-28 14:29:59,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 14:29:59,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 650 [2020-10-28 14:29:59,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:29:59,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:29:59,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 14:29:59,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:29:59,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 14:29:59,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:29:59,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:29:59,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:29:59,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:29:59,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:29:59,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:29:59,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:29:59,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:29:59,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:29:59,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:29:59,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:29:59,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:29:59,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:29:59,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:29:59,812 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 14:29:59,812 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [269059320] [2020-10-28 14:29:59,812 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:29:59,812 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 14:29:59,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960094037] [2020-10-28 14:29:59,813 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 14:29:59,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:29:59,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 14:29:59,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-28 14:29:59,814 INFO L87 Difference]: Start difference. First operand 41 states and 50 transitions. Second operand 9 states. [2020-10-28 14:30:00,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:30:00,579 INFO L93 Difference]: Finished difference Result 73 states and 91 transitions. [2020-10-28 14:30:00,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 14:30:00,579 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-10-28 14:30:00,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:30:00,581 INFO L225 Difference]: With dead ends: 73 [2020-10-28 14:30:00,581 INFO L226 Difference]: Without dead ends: 64 [2020-10-28 14:30:00,582 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2020-10-28 14:30:00,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-28 14:30:00,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 49. [2020-10-28 14:30:00,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-28 14:30:00,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 61 transitions. [2020-10-28 14:30:00,590 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 61 transitions. Word has length 23 [2020-10-28 14:30:00,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:30:00,591 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 61 transitions. [2020-10-28 14:30:00,591 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 14:30:00,591 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 61 transitions. [2020-10-28 14:30:00,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-28 14:30:00,592 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:30:00,592 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] [2020-10-28 14:30:00,592 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 14:30:00,592 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:30:00,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:30:00,593 INFO L82 PathProgramCache]: Analyzing trace with hash 2042394987, now seen corresponding path program 1 times [2020-10-28 14:30:00,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:30:00,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1303036609] [2020-10-28 14:30:00,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:30:00,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:30:00,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:00,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:30:00,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 14:30:00,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:30:00,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 254 [2020-10-28 14:30:00,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:30:00,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:30:00,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 14:30:00,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:30:00,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 14:30:00,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:30:01,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:30:01,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:30:01,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:01,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:30:01,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:30:01,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:30:01,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:30:01,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:30:01,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:30:01,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:30:01,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:30:01,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:30:01,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:30:01,089 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:30:01,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1303036609] [2020-10-28 14:30:01,091 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:30:01,091 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 14:30:01,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478250704] [2020-10-28 14:30:01,091 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 14:30:01,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:30:01,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 14:30:01,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-28 14:30:01,094 INFO L87 Difference]: Start difference. First operand 49 states and 61 transitions. Second operand 10 states. [2020-10-28 14:30:01,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:30:01,661 INFO L93 Difference]: Finished difference Result 77 states and 96 transitions. [2020-10-28 14:30:01,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 14:30:01,661 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 24 [2020-10-28 14:30:01,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:30:01,664 INFO L225 Difference]: With dead ends: 77 [2020-10-28 14:30:01,664 INFO L226 Difference]: Without dead ends: 73 [2020-10-28 14:30:01,665 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2020-10-28 14:30:01,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-28 14:30:01,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 52. [2020-10-28 14:30:01,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-28 14:30:01,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 64 transitions. [2020-10-28 14:30:01,680 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 64 transitions. Word has length 24 [2020-10-28 14:30:01,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:30:01,681 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 64 transitions. [2020-10-28 14:30:01,681 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 14:30:01,681 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 64 transitions. [2020-10-28 14:30:01,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-28 14:30:01,682 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:30:01,685 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:30:01,686 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 14:30:01,686 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:30:01,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:30:01,686 INFO L82 PathProgramCache]: Analyzing trace with hash 917091098, now seen corresponding path program 1 times [2020-10-28 14:30:01,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:30:01,687 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2136977127] [2020-10-28 14:30:01,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:30:01,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:30:01,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:01,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:30:01,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-28 14:30:01,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:30:01,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-28 14:30:01,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:30:01,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:30:01,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:30:01,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 14:30:01,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:30:01,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:30:01,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:30:01,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:30:01,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:01,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:30:01,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:30:01,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:30:01,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 14:30:01,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:30:01,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:30:01,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:30:01,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:30:01,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:30:01,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:30:01,935 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:30:01,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2136977127] [2020-10-28 14:30:01,936 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:30:01,936 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 14:30:01,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744545847] [2020-10-28 14:30:01,938 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 14:30:01,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:30:01,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 14:30:01,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:30:01,946 INFO L87 Difference]: Start difference. First operand 52 states and 64 transitions. Second operand 7 states. [2020-10-28 14:30:02,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:30:02,257 INFO L93 Difference]: Finished difference Result 83 states and 102 transitions. [2020-10-28 14:30:02,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 14:30:02,257 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2020-10-28 14:30:02,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:30:02,258 INFO L225 Difference]: With dead ends: 83 [2020-10-28 14:30:02,258 INFO L226 Difference]: Without dead ends: 68 [2020-10-28 14:30:02,259 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-28 14:30:02,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-28 14:30:02,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 58. [2020-10-28 14:30:02,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-28 14:30:02,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 71 transitions. [2020-10-28 14:30:02,278 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 71 transitions. Word has length 25 [2020-10-28 14:30:02,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:30:02,279 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 71 transitions. [2020-10-28 14:30:02,279 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 14:30:02,279 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 71 transitions. [2020-10-28 14:30:02,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-28 14:30:02,280 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:30:02,280 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:30:02,280 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 14:30:02,281 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:30:02,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:30:02,283 INFO L82 PathProgramCache]: Analyzing trace with hash -1387738926, now seen corresponding path program 1 times [2020-10-28 14:30:02,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:30:02,283 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1833343997] [2020-10-28 14:30:02,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:30:02,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:30:02,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:02,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:02,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:03,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:30:03,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-28 14:30:03,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:30:03,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1087 [2020-10-28 14:30:03,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:30:03,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:30:03,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:30:03,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:30:03,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 14:30:03,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:30:03,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:30:03,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:30:03,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:03,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:30:03,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:30:03,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:30:03,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:30:03,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:30:03,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:30:03,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:30:03,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:30:03,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:30:03,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:30:03,475 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:30:03,475 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1833343997] [2020-10-28 14:30:03,476 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:30:03,476 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 14:30:03,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645305131] [2020-10-28 14:30:03,477 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 14:30:03,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:30:03,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 14:30:03,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:30:03,478 INFO L87 Difference]: Start difference. First operand 58 states and 71 transitions. Second operand 7 states. [2020-10-28 14:30:03,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:30:03,781 INFO L93 Difference]: Finished difference Result 88 states and 110 transitions. [2020-10-28 14:30:03,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 14:30:03,781 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2020-10-28 14:30:03,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:30:03,782 INFO L225 Difference]: With dead ends: 88 [2020-10-28 14:30:03,783 INFO L226 Difference]: Without dead ends: 72 [2020-10-28 14:30:03,783 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-28 14:30:03,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-28 14:30:03,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 64. [2020-10-28 14:30:03,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-28 14:30:03,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 79 transitions. [2020-10-28 14:30:03,791 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 79 transitions. Word has length 25 [2020-10-28 14:30:03,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:30:03,792 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 79 transitions. [2020-10-28 14:30:03,792 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 14:30:03,792 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 79 transitions. [2020-10-28 14:30:03,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-28 14:30:03,793 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:30:03,793 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:30:03,793 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 14:30:03,794 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:30:03,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:30:03,794 INFO L82 PathProgramCache]: Analyzing trace with hash -874384875, now seen corresponding path program 1 times [2020-10-28 14:30:03,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:30:03,795 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1437153618] [2020-10-28 14:30:03,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:30:03,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:30:03,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:03,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:03,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:04,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:30:04,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-28 14:30:04,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:30:04,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 978 [2020-10-28 14:30:04,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:30:04,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:30:04,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:30:04,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:30:04,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 14:30:04,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:30:04,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:30:04,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:30:04,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:04,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:30:04,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:30:04,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:30:04,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 14:30:04,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:30:04,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:30:04,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:30:04,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:30:04,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:30:04,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:30:04,914 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:30:04,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1437153618] [2020-10-28 14:30:04,915 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:30:04,915 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 14:30:04,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119455809] [2020-10-28 14:30:04,916 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 14:30:04,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:30:04,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 14:30:04,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 14:30:04,918 INFO L87 Difference]: Start difference. First operand 64 states and 79 transitions. Second operand 6 states. [2020-10-28 14:30:05,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:30:05,116 INFO L93 Difference]: Finished difference Result 75 states and 91 transitions. [2020-10-28 14:30:05,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 14:30:05,117 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-10-28 14:30:05,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:30:05,118 INFO L225 Difference]: With dead ends: 75 [2020-10-28 14:30:05,118 INFO L226 Difference]: Without dead ends: 51 [2020-10-28 14:30:05,119 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-28 14:30:05,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-28 14:30:05,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-10-28 14:30:05,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-28 14:30:05,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 62 transitions. [2020-10-28 14:30:05,129 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 62 transitions. Word has length 26 [2020-10-28 14:30:05,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:30:05,130 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 62 transitions. [2020-10-28 14:30:05,130 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 14:30:05,130 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 62 transitions. [2020-10-28 14:30:05,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-28 14:30:05,133 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:30:05,134 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:30:05,134 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 14:30:05,134 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:30:05,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:30:05,135 INFO L82 PathProgramCache]: Analyzing trace with hash -1327373729, now seen corresponding path program 1 times [2020-10-28 14:30:05,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:30:05,135 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1742115153] [2020-10-28 14:30:05,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:30:05,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:30:05,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:05,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:30:05,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-28 14:30:05,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:30:05,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 370 [2020-10-28 14:30:05,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:30:05,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:30:05,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 14:30:05,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:30:05,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 14:30:05,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:30:05,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:30:05,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:30:05,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:05,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:30:05,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:30:05,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:30:05,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:30:05,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:30:05,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:30:05,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:30:05,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:30:05,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:30:05,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:30:05,906 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:30:05,907 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1742115153] [2020-10-28 14:30:05,907 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:30:05,907 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 14:30:05,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574487286] [2020-10-28 14:30:05,910 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 14:30:05,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:30:05,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 14:30:05,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-28 14:30:05,911 INFO L87 Difference]: Start difference. First operand 51 states and 62 transitions. Second operand 11 states. [2020-10-28 14:30:06,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:30:06,536 INFO L93 Difference]: Finished difference Result 86 states and 107 transitions. [2020-10-28 14:30:06,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 14:30:06,537 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 26 [2020-10-28 14:30:06,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:30:06,538 INFO L225 Difference]: With dead ends: 86 [2020-10-28 14:30:06,538 INFO L226 Difference]: Without dead ends: 82 [2020-10-28 14:30:06,538 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-10-28 14:30:06,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-28 14:30:06,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 61. [2020-10-28 14:30:06,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-28 14:30:06,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 75 transitions. [2020-10-28 14:30:06,550 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 75 transitions. Word has length 26 [2020-10-28 14:30:06,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:30:06,550 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 75 transitions. [2020-10-28 14:30:06,550 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 14:30:06,550 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 75 transitions. [2020-10-28 14:30:06,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-28 14:30:06,554 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:30:06,554 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:30:06,554 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 14:30:06,554 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:30:06,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:30:06,555 INFO L82 PathProgramCache]: Analyzing trace with hash 1606880250, now seen corresponding path program 2 times [2020-10-28 14:30:06,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:30:06,555 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [308349931] [2020-10-28 14:30:06,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:30:06,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:30:06,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:06,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:30:06,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-28 14:30:06,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:30:06,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 258 [2020-10-28 14:30:06,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:30:06,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:30:06,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 14:30:06,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:30:06,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 14:30:06,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:30:07,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:30:07,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:30:07,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:07,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:30:07,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:30:07,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:30:07,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:30:07,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:30:07,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:30:07,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:30:07,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:30:07,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:30:07,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:30:07,089 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:30:07,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [308349931] [2020-10-28 14:30:07,090 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:30:07,090 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 14:30:07,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367701364] [2020-10-28 14:30:07,091 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 14:30:07,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:30:07,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 14:30:07,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-28 14:30:07,092 INFO L87 Difference]: Start difference. First operand 61 states and 75 transitions. Second operand 10 states. [2020-10-28 14:30:07,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:30:07,963 INFO L93 Difference]: Finished difference Result 95 states and 117 transitions. [2020-10-28 14:30:07,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 14:30:07,963 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 27 [2020-10-28 14:30:07,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:30:07,964 INFO L225 Difference]: With dead ends: 95 [2020-10-28 14:30:07,964 INFO L226 Difference]: Without dead ends: 77 [2020-10-28 14:30:07,965 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2020-10-28 14:30:07,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-28 14:30:07,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 61. [2020-10-28 14:30:07,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-28 14:30:07,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 74 transitions. [2020-10-28 14:30:07,972 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 74 transitions. Word has length 27 [2020-10-28 14:30:07,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:30:07,972 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 74 transitions. [2020-10-28 14:30:07,972 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 14:30:07,972 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 74 transitions. [2020-10-28 14:30:07,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-28 14:30:07,973 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:30:07,973 INFO L422 BasicCegarLoop]: trace histogram [3, 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 14:30:07,973 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 14:30:07,973 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:30:07,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:30:07,974 INFO L82 PathProgramCache]: Analyzing trace with hash 1434445165, now seen corresponding path program 2 times [2020-10-28 14:30:07,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:30:07,979 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1416520706] [2020-10-28 14:30:07,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:30:07,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:30:08,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:08,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:08,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:09,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:30:09,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-28 14:30:09,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:30:09,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1670 [2020-10-28 14:30:09,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:30:09,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:30:09,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:30:09,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:30:09,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 14:30:09,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:30:09,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:30:09,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:30:09,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:09,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:30:09,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:30:09,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:30:09,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:30:09,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:30:09,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:30:09,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:30:09,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:30:09,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:30:09,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:30:09,767 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:30:09,767 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1416520706] [2020-10-28 14:30:09,768 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:30:09,768 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 14:30:09,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247181886] [2020-10-28 14:30:09,768 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 14:30:09,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:30:09,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 14:30:09,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-28 14:30:09,770 INFO L87 Difference]: Start difference. First operand 61 states and 74 transitions. Second operand 8 states. [2020-10-28 14:30:10,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:30:10,125 INFO L93 Difference]: Finished difference Result 89 states and 106 transitions. [2020-10-28 14:30:10,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 14:30:10,126 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2020-10-28 14:30:10,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:30:10,127 INFO L225 Difference]: With dead ends: 89 [2020-10-28 14:30:10,127 INFO L226 Difference]: Without dead ends: 73 [2020-10-28 14:30:10,127 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-10-28 14:30:10,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-28 14:30:10,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 61. [2020-10-28 14:30:10,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-28 14:30:10,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 73 transitions. [2020-10-28 14:30:10,134 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 73 transitions. Word has length 27 [2020-10-28 14:30:10,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:30:10,134 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 73 transitions. [2020-10-28 14:30:10,134 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 14:30:10,135 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 73 transitions. [2020-10-28 14:30:10,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-28 14:30:10,135 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:30:10,135 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] [2020-10-28 14:30:10,135 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 14:30:10,136 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:30:10,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:30:10,136 INFO L82 PathProgramCache]: Analyzing trace with hash 1362521924, now seen corresponding path program 1 times [2020-10-28 14:30:10,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:30:10,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1780522303] [2020-10-28 14:30:10,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:30:10,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:30:10,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:10,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:10,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:11,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:30:11,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 14:30:11,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:30:11,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1795 [2020-10-28 14:30:11,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:30:11,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:30:11,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 14:30:11,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:30:11,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-28 14:30:11,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:30:12,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:30:12,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:30:12,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:12,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:30:12,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:30:12,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:30:12,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:30:12,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:30:12,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:30:12,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:30:12,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:30:12,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:30:12,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:30:12,222 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:30:12,225 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1780522303] [2020-10-28 14:30:12,225 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:30:12,225 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 14:30:12,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528361160] [2020-10-28 14:30:12,227 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 14:30:12,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:30:12,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 14:30:12,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-28 14:30:12,228 INFO L87 Difference]: Start difference. First operand 61 states and 73 transitions. Second operand 11 states. [2020-10-28 14:30:13,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:30:13,310 INFO L93 Difference]: Finished difference Result 104 states and 128 transitions. [2020-10-28 14:30:13,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 14:30:13,311 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-10-28 14:30:13,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:30:13,312 INFO L225 Difference]: With dead ends: 104 [2020-10-28 14:30:13,312 INFO L226 Difference]: Without dead ends: 85 [2020-10-28 14:30:13,314 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2020-10-28 14:30:13,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-28 14:30:13,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 59. [2020-10-28 14:30:13,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-28 14:30:13,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 69 transitions. [2020-10-28 14:30:13,329 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 69 transitions. Word has length 28 [2020-10-28 14:30:13,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:30:13,329 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 69 transitions. [2020-10-28 14:30:13,329 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 14:30:13,329 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 69 transitions. [2020-10-28 14:30:13,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-28 14:30:13,330 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:30:13,333 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] [2020-10-28 14:30:13,333 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 14:30:13,333 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:30:13,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:30:13,334 INFO L82 PathProgramCache]: Analyzing trace with hash 713976026, now seen corresponding path program 1 times [2020-10-28 14:30:13,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:30:13,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1050873243] [2020-10-28 14:30:13,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:30:13,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:30:13,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:13,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:13,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:30:13,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 14:30:13,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:30:13,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 579 [2020-10-28 14:30:13,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:30:13,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:30:13,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:30:13,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:30:13,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 14:30:13,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:30:14,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:30:14,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:30:14,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:14,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:30:14,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:30:14,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:30:14,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:30:14,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:30:14,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:30:14,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:30:14,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:30:14,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:30:14,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:30:14,048 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:30:14,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1050873243] [2020-10-28 14:30:14,048 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:30:14,048 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 14:30:14,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813804374] [2020-10-28 14:30:14,049 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 14:30:14,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:30:14,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 14:30:14,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-28 14:30:14,050 INFO L87 Difference]: Start difference. First operand 59 states and 69 transitions. Second operand 8 states. [2020-10-28 14:30:14,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:30:14,470 INFO L93 Difference]: Finished difference Result 88 states and 106 transitions. [2020-10-28 14:30:14,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 14:30:14,472 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2020-10-28 14:30:14,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:30:14,473 INFO L225 Difference]: With dead ends: 88 [2020-10-28 14:30:14,474 INFO L226 Difference]: Without dead ends: 77 [2020-10-28 14:30:14,474 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-10-28 14:30:14,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-28 14:30:14,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 64. [2020-10-28 14:30:14,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-28 14:30:14,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 76 transitions. [2020-10-28 14:30:14,487 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 76 transitions. Word has length 28 [2020-10-28 14:30:14,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:30:14,487 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 76 transitions. [2020-10-28 14:30:14,488 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 14:30:14,488 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 76 transitions. [2020-10-28 14:30:14,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-28 14:30:14,488 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:30:14,488 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] [2020-10-28 14:30:14,489 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 14:30:14,489 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:30:14,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:30:14,490 INFO L82 PathProgramCache]: Analyzing trace with hash 320949016, now seen corresponding path program 1 times [2020-10-28 14:30:14,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:30:14,490 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [47079704] [2020-10-28 14:30:14,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:30:14,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:30:14,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:14,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:15,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:30:15,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 14:30:15,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:30:15,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 763 [2020-10-28 14:30:15,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:30:15,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:30:15,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 14:30:15,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:30:15,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 14:30:15,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:30:15,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:30:15,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:30:15,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:15,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:30:15,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:30:15,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:30:15,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:30:15,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:30:15,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:30:15,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:30:15,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:30:15,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:30:15,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:30:15,576 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-28 14:30:15,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [47079704] [2020-10-28 14:30:15,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:30:15,577 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 14:30:15,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602099325] [2020-10-28 14:30:15,577 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 14:30:15,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:30:15,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 14:30:15,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-28 14:30:15,579 INFO L87 Difference]: Start difference. First operand 64 states and 76 transitions. Second operand 11 states. [2020-10-28 14:30:16,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:30:16,486 INFO L93 Difference]: Finished difference Result 99 states and 122 transitions. [2020-10-28 14:30:16,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 14:30:16,490 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-10-28 14:30:16,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:30:16,491 INFO L225 Difference]: With dead ends: 99 [2020-10-28 14:30:16,491 INFO L226 Difference]: Without dead ends: 95 [2020-10-28 14:30:16,492 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=98, Invalid=322, Unknown=0, NotChecked=0, Total=420 [2020-10-28 14:30:16,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-28 14:30:16,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 73. [2020-10-28 14:30:16,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-28 14:30:16,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 89 transitions. [2020-10-28 14:30:16,500 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 89 transitions. Word has length 28 [2020-10-28 14:30:16,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:30:16,500 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 89 transitions. [2020-10-28 14:30:16,500 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 14:30:16,500 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 89 transitions. [2020-10-28 14:30:16,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-28 14:30:16,501 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:30:16,501 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:30:16,501 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 14:30:16,501 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:30:16,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:30:16,502 INFO L82 PathProgramCache]: Analyzing trace with hash 260987172, now seen corresponding path program 2 times [2020-10-28 14:30:16,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:30:16,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1407331472] [2020-10-28 14:30:16,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:30:16,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:30:16,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:17,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:30:17,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 14:30:17,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:30:17,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 587 [2020-10-28 14:30:17,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:30:17,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:30:17,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 14:30:17,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:30:17,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 14:30:17,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:30:17,539 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 46 [2020-10-28 14:30:17,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:30:17,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:30:17,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:17,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:30:17,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:30:17,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:30:17,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:30:17,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:30:17,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:30:17,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:30:17,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:30:17,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:30:17,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:30:17,684 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:30:17,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1407331472] [2020-10-28 14:30:17,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:30:17,685 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 14:30:17,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087187663] [2020-10-28 14:30:17,685 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 14:30:17,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:30:17,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 14:30:17,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-28 14:30:17,687 INFO L87 Difference]: Start difference. First operand 73 states and 89 transitions. Second operand 12 states. [2020-10-28 14:30:18,982 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 57 [2020-10-28 14:30:19,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:30:19,442 INFO L93 Difference]: Finished difference Result 112 states and 139 transitions. [2020-10-28 14:30:19,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 14:30:19,446 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 28 [2020-10-28 14:30:19,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:30:19,447 INFO L225 Difference]: With dead ends: 112 [2020-10-28 14:30:19,447 INFO L226 Difference]: Without dead ends: 108 [2020-10-28 14:30:19,448 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=103, Invalid=403, Unknown=0, NotChecked=0, Total=506 [2020-10-28 14:30:19,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-28 14:30:19,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 82. [2020-10-28 14:30:19,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-28 14:30:19,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 102 transitions. [2020-10-28 14:30:19,458 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 102 transitions. Word has length 28 [2020-10-28 14:30:19,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:30:19,458 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 102 transitions. [2020-10-28 14:30:19,458 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 14:30:19,458 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 102 transitions. [2020-10-28 14:30:19,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-28 14:30:19,459 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:30:19,459 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:30:19,459 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 14:30:19,459 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:30:19,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:30:19,460 INFO L82 PathProgramCache]: Analyzing trace with hash -132039838, now seen corresponding path program 1 times [2020-10-28 14:30:19,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:30:19,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [264549723] [2020-10-28 14:30:19,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:30:19,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:30:19,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:19,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:19,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:20,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:20,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:21,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:30:21,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 14:30:21,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 14:30:21,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2469 [2020-10-28 14:30:21,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:30:21,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:30:21,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:30:21,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:30:21,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 14:30:21,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:30:22,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:30:22,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:30:22,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:22,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:30:22,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:30:22,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:30:22,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:30:22,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:30:22,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:30:22,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:30:22,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:30:22,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:30:22,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:30:22,060 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:30:22,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [264549723] [2020-10-28 14:30:22,061 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:30:22,061 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 14:30:22,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601724461] [2020-10-28 14:30:22,062 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 14:30:22,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:30:22,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 14:30:22,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-28 14:30:22,063 INFO L87 Difference]: Start difference. First operand 82 states and 102 transitions. Second operand 8 states. [2020-10-28 14:30:22,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:30:22,437 INFO L93 Difference]: Finished difference Result 107 states and 131 transitions. [2020-10-28 14:30:22,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 14:30:22,437 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2020-10-28 14:30:22,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:30:22,438 INFO L225 Difference]: With dead ends: 107 [2020-10-28 14:30:22,438 INFO L226 Difference]: Without dead ends: 96 [2020-10-28 14:30:22,439 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-10-28 14:30:22,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-28 14:30:22,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 79. [2020-10-28 14:30:22,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-28 14:30:22,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 97 transitions. [2020-10-28 14:30:22,447 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 97 transitions. Word has length 28 [2020-10-28 14:30:22,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:30:22,447 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 97 transitions. [2020-10-28 14:30:22,447 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 14:30:22,448 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 97 transitions. [2020-10-28 14:30:22,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-28 14:30:22,448 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:30:22,448 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:30:22,448 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-28 14:30:22,448 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:30:22,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:30:22,449 INFO L82 PathProgramCache]: Analyzing trace with hash -693539371, now seen corresponding path program 3 times [2020-10-28 14:30:22,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:30:22,449 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1890421191] [2020-10-28 14:30:22,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:30:22,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:30:22,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:22,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:30:22,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-28 14:30:22,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:30:22,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 360 [2020-10-28 14:30:22,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:30:22,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:30:22,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 14:30:22,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:30:22,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-28 14:30:22,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:30:23,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:30:23,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:30:23,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:23,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:30:23,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:30:23,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:30:23,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:30:23,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:30:23,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:30:23,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:30:23,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:30:23,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:30:23,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:30:23,096 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:30:23,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1890421191] [2020-10-28 14:30:23,097 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:30:23,097 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 14:30:23,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722568309] [2020-10-28 14:30:23,098 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 14:30:23,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:30:23,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 14:30:23,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-28 14:30:23,099 INFO L87 Difference]: Start difference. First operand 79 states and 97 transitions. Second operand 12 states. [2020-10-28 14:30:24,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:30:24,192 INFO L93 Difference]: Finished difference Result 112 states and 137 transitions. [2020-10-28 14:30:24,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 14:30:24,192 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 29 [2020-10-28 14:30:24,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:30:24,194 INFO L225 Difference]: With dead ends: 112 [2020-10-28 14:30:24,194 INFO L226 Difference]: Without dead ends: 108 [2020-10-28 14:30:24,195 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=68, Invalid=438, Unknown=0, NotChecked=0, Total=506 [2020-10-28 14:30:24,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-28 14:30:24,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 86. [2020-10-28 14:30:24,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-28 14:30:24,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 104 transitions. [2020-10-28 14:30:24,203 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 104 transitions. Word has length 29 [2020-10-28 14:30:24,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:30:24,204 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 104 transitions. [2020-10-28 14:30:24,204 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 14:30:24,204 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 104 transitions. [2020-10-28 14:30:24,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-28 14:30:24,204 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:30:24,204 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:30:24,205 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-28 14:30:24,205 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:30:24,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:30:24,205 INFO L82 PathProgramCache]: Analyzing trace with hash 781932265, now seen corresponding path program 2 times [2020-10-28 14:30:24,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:30:24,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1764723744] [2020-10-28 14:30:24,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:30:24,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:30:24,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:24,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:30:24,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-28 14:30:24,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:30:24,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 226 [2020-10-28 14:30:24,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:30:24,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:30:24,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 14:30:24,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:30:24,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 14:30:24,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:30:24,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:30:24,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:30:24,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:24,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:30:24,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:30:24,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:30:24,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:30:24,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:30:24,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:30:24,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:30:24,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:30:24,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:30:24,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:30:24,631 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-28 14:30:24,631 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1764723744] [2020-10-28 14:30:24,631 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:30:24,631 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 14:30:24,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179629550] [2020-10-28 14:30:24,632 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 14:30:24,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:30:24,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 14:30:24,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-28 14:30:24,633 INFO L87 Difference]: Start difference. First operand 86 states and 104 transitions. Second operand 10 states. [2020-10-28 14:30:25,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:30:25,080 INFO L93 Difference]: Finished difference Result 117 states and 140 transitions. [2020-10-28 14:30:25,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 14:30:25,081 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 30 [2020-10-28 14:30:25,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:30:25,082 INFO L225 Difference]: With dead ends: 117 [2020-10-28 14:30:25,082 INFO L226 Difference]: Without dead ends: 100 [2020-10-28 14:30:25,082 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2020-10-28 14:30:25,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-28 14:30:25,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 85. [2020-10-28 14:30:25,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-28 14:30:25,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 102 transitions. [2020-10-28 14:30:25,094 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 102 transitions. Word has length 30 [2020-10-28 14:30:25,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:30:25,094 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 102 transitions. [2020-10-28 14:30:25,094 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 14:30:25,095 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 102 transitions. [2020-10-28 14:30:25,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-28 14:30:25,095 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:30:25,095 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 14:30:25,095 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-28 14:30:25,095 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:30:25,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:30:25,096 INFO L82 PathProgramCache]: Analyzing trace with hash 557747645, now seen corresponding path program 1 times [2020-10-28 14:30:25,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:30:25,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1986059333] [2020-10-28 14:30:25,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:30:25,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:30:25,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:25,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:30:25,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-28 14:30:25,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:30:25,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 234 [2020-10-28 14:30:25,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:30:25,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:30:25,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 14:30:25,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:30:25,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-28 14:30:25,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:30:25,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:30:25,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:30:25,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:25,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:30:25,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:30:25,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:30:25,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:30:25,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:30:25,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:30:25,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:30:25,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:30:25,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:30:25,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:30:25,546 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:30:25,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1986059333] [2020-10-28 14:30:25,546 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:30:25,546 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 14:30:25,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811861895] [2020-10-28 14:30:25,547 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 14:30:25,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:30:25,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 14:30:25,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-28 14:30:25,548 INFO L87 Difference]: Start difference. First operand 85 states and 102 transitions. Second operand 11 states. [2020-10-28 14:30:26,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:30:26,061 INFO L93 Difference]: Finished difference Result 120 states and 145 transitions. [2020-10-28 14:30:26,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 14:30:26,064 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 30 [2020-10-28 14:30:26,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:30:26,065 INFO L225 Difference]: With dead ends: 120 [2020-10-28 14:30:26,065 INFO L226 Difference]: Without dead ends: 107 [2020-10-28 14:30:26,066 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-10-28 14:30:26,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-10-28 14:30:26,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 90. [2020-10-28 14:30:26,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-28 14:30:26,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 107 transitions. [2020-10-28 14:30:26,076 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 107 transitions. Word has length 30 [2020-10-28 14:30:26,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:30:26,076 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 107 transitions. [2020-10-28 14:30:26,076 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 14:30:26,077 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 107 transitions. [2020-10-28 14:30:26,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-28 14:30:26,077 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:30:26,077 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:30:26,077 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-28 14:30:26,078 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:30:26,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:30:26,078 INFO L82 PathProgramCache]: Analyzing trace with hash -1879555489, now seen corresponding path program 2 times [2020-10-28 14:30:26,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:30:26,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1911286739] [2020-10-28 14:30:26,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:30:26,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:30:26,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:26,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:26,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:27,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:30:27,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-28 14:30:27,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:30:27,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1635 [2020-10-28 14:30:27,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:30:27,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:30:27,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:30:27,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 14:30:27,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 14:30:27,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:30:27,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:30:27,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:30:27,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:27,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:30:27,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:30:27,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:30:27,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:30:27,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:30:27,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:30:27,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:30:27,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:30:27,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:30:27,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:30:27,812 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-28 14:30:27,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1911286739] [2020-10-28 14:30:27,813 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:30:27,813 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 14:30:27,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3512707] [2020-10-28 14:30:27,816 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 14:30:27,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:30:27,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 14:30:27,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 14:30:27,818 INFO L87 Difference]: Start difference. First operand 90 states and 107 transitions. Second operand 6 states. [2020-10-28 14:30:28,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:30:28,044 INFO L93 Difference]: Finished difference Result 121 states and 143 transitions. [2020-10-28 14:30:28,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 14:30:28,045 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2020-10-28 14:30:28,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:30:28,046 INFO L225 Difference]: With dead ends: 121 [2020-10-28 14:30:28,046 INFO L226 Difference]: Without dead ends: 110 [2020-10-28 14:30:28,046 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:30:28,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-28 14:30:28,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 94. [2020-10-28 14:30:28,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-28 14:30:28,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 111 transitions. [2020-10-28 14:30:28,059 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 111 transitions. Word has length 30 [2020-10-28 14:30:28,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:30:28,060 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 111 transitions. [2020-10-28 14:30:28,060 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 14:30:28,060 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 111 transitions. [2020-10-28 14:30:28,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-28 14:30:28,060 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:30:28,060 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:30:28,061 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-28 14:30:28,061 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:30:28,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:30:28,061 INFO L82 PathProgramCache]: Analyzing trace with hash 2022384797, now seen corresponding path program 2 times [2020-10-28 14:30:28,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:30:28,062 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1914764755] [2020-10-28 14:30:28,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:30:28,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:30:28,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:28,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:28,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:28,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:30,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:30:30,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-28 14:30:30,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 14:30:30,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2354 [2020-10-28 14:30:30,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:30:30,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:30:30,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 14:30:30,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:30:30,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 14:30:30,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:30:30,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:30:30,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:30:30,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:30,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:30:30,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:30:30,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:30:30,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:30:30,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:30:30,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:30:30,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:30:30,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:30:30,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:30:30,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:30:30,844 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-28 14:30:30,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1914764755] [2020-10-28 14:30:30,844 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:30:30,844 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 14:30:30,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351223911] [2020-10-28 14:30:30,847 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 14:30:30,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:30:30,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 14:30:30,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-10-28 14:30:30,848 INFO L87 Difference]: Start difference. First operand 94 states and 111 transitions. Second operand 12 states. [2020-10-28 14:30:31,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:30:31,623 INFO L93 Difference]: Finished difference Result 140 states and 170 transitions. [2020-10-28 14:30:31,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 14:30:31,624 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 30 [2020-10-28 14:30:31,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:30:31,625 INFO L225 Difference]: With dead ends: 140 [2020-10-28 14:30:31,625 INFO L226 Difference]: Without dead ends: 136 [2020-10-28 14:30:31,625 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-10-28 14:30:31,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-10-28 14:30:31,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 94. [2020-10-28 14:30:31,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-28 14:30:31,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 111 transitions. [2020-10-28 14:30:31,637 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 111 transitions. Word has length 30 [2020-10-28 14:30:31,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:30:31,637 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 111 transitions. [2020-10-28 14:30:31,637 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 14:30:31,637 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 111 transitions. [2020-10-28 14:30:31,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-28 14:30:31,638 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:30:31,638 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 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 14:30:31,640 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-28 14:30:31,640 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:30:31,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:30:31,641 INFO L82 PathProgramCache]: Analyzing trace with hash 1962422953, now seen corresponding path program 3 times [2020-10-28 14:30:31,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:30:31,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [454232050] [2020-10-28 14:30:31,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:30:31,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:30:31,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:32,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:30:32,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-28 14:30:32,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:30:32,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 832 [2020-10-28 14:30:32,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:30:32,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:30:32,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 14:30:32,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:30:32,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 14:30:32,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:30:32,912 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 40 [2020-10-28 14:30:33,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:30:33,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:30:33,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:33,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:30:33,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:30:33,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:30:33,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:30:33,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:30:33,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:30:33,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:30:33,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:30:33,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:30:33,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:30:33,078 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:30:33,078 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [454232050] [2020-10-28 14:30:33,078 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:30:33,078 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-28 14:30:33,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393441250] [2020-10-28 14:30:33,079 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 14:30:33,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:30:33,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 14:30:33,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2020-10-28 14:30:33,080 INFO L87 Difference]: Start difference. First operand 94 states and 111 transitions. Second operand 13 states. [2020-10-28 14:30:33,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:30:33,818 INFO L93 Difference]: Finished difference Result 119 states and 141 transitions. [2020-10-28 14:30:33,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 14:30:33,819 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 30 [2020-10-28 14:30:33,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:30:33,820 INFO L225 Difference]: With dead ends: 119 [2020-10-28 14:30:33,820 INFO L226 Difference]: Without dead ends: 115 [2020-10-28 14:30:33,821 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-10-28 14:30:33,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-10-28 14:30:33,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 89. [2020-10-28 14:30:33,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-28 14:30:33,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 106 transitions. [2020-10-28 14:30:33,831 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 106 transitions. Word has length 30 [2020-10-28 14:30:33,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:30:33,831 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 106 transitions. [2020-10-28 14:30:33,831 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 14:30:33,831 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 106 transitions. [2020-10-28 14:30:33,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-28 14:30:33,832 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:30:33,832 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-10-28 14:30:33,832 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-28 14:30:33,832 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:30:33,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:30:33,833 INFO L82 PathProgramCache]: Analyzing trace with hash 302572961, now seen corresponding path program 1 times [2020-10-28 14:30:33,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:30:33,833 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1749148079] [2020-10-28 14:30:33,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:30:33,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:30:33,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:34,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:30:34,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-28 14:30:34,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:30:34,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 449 [2020-10-28 14:30:34,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:30:34,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:30:34,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 14:30:34,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:30:34,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 14:30:34,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:30:34,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:30:34,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:30:34,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:34,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:30:34,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:30:34,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:30:34,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:30:34,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:30:34,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:30:34,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:30:34,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:30:34,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:30:34,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:30:34,706 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:30:34,707 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1749148079] [2020-10-28 14:30:34,707 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:30:34,707 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-28 14:30:34,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068197891] [2020-10-28 14:30:34,707 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 14:30:34,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:30:34,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 14:30:34,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-28 14:30:34,708 INFO L87 Difference]: Start difference. First operand 89 states and 106 transitions. Second operand 13 states. [2020-10-28 14:30:35,941 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 67 [2020-10-28 14:30:36,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:30:36,409 INFO L93 Difference]: Finished difference Result 119 states and 140 transitions. [2020-10-28 14:30:36,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 14:30:36,409 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 31 [2020-10-28 14:30:36,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:30:36,411 INFO L225 Difference]: With dead ends: 119 [2020-10-28 14:30:36,411 INFO L226 Difference]: Without dead ends: 115 [2020-10-28 14:30:36,412 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=91, Invalid=461, Unknown=0, NotChecked=0, Total=552 [2020-10-28 14:30:36,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-10-28 14:30:36,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 91. [2020-10-28 14:30:36,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-28 14:30:36,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 108 transitions. [2020-10-28 14:30:36,428 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 108 transitions. Word has length 31 [2020-10-28 14:30:36,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:30:36,428 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 108 transitions. [2020-10-28 14:30:36,429 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 14:30:36,429 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 108 transitions. [2020-10-28 14:30:36,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-28 14:30:36,429 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:30:36,429 INFO L422 BasicCegarLoop]: trace histogram [3, 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 14:30:36,429 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-28 14:30:36,429 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:30:36,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:30:36,430 INFO L82 PathProgramCache]: Analyzing trace with hash 606182002, now seen corresponding path program 1 times [2020-10-28 14:30:36,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:30:36,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [604015365] [2020-10-28 14:30:36,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:30:36,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:30:36,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:36,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:30:36,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-28 14:30:36,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:30:36,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 530 [2020-10-28 14:30:36,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:30:36,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:30:36,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 14:30:36,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:30:36,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 14:30:36,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:30:37,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:30:37,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:30:37,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:37,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:30:37,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:30:37,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:30:37,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:30:37,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:30:37,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:30:37,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:30:37,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:30:37,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:30:37,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:30:37,371 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:30:37,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [604015365] [2020-10-28 14:30:37,372 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:30:37,372 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 14:30:37,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965415641] [2020-10-28 14:30:37,372 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 14:30:37,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:30:37,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 14:30:37,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-10-28 14:30:37,373 INFO L87 Difference]: Start difference. First operand 91 states and 108 transitions. Second operand 12 states. [2020-10-28 14:30:38,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:30:38,139 INFO L93 Difference]: Finished difference Result 130 states and 157 transitions. [2020-10-28 14:30:38,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 14:30:38,140 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 31 [2020-10-28 14:30:38,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:30:38,141 INFO L225 Difference]: With dead ends: 130 [2020-10-28 14:30:38,141 INFO L226 Difference]: Without dead ends: 119 [2020-10-28 14:30:38,142 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2020-10-28 14:30:38,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-10-28 14:30:38,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 99. [2020-10-28 14:30:38,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-28 14:30:38,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 119 transitions. [2020-10-28 14:30:38,154 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 119 transitions. Word has length 31 [2020-10-28 14:30:38,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:30:38,155 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 119 transitions. [2020-10-28 14:30:38,155 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 14:30:38,155 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 119 transitions. [2020-10-28 14:30:38,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-28 14:30:38,157 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:30:38,157 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:30:38,157 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-28 14:30:38,157 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:30:38,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:30:38,158 INFO L82 PathProgramCache]: Analyzing trace with hash 511362288, now seen corresponding path program 4 times [2020-10-28 14:30:38,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:30:38,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1695663450] [2020-10-28 14:30:38,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:30:38,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:30:38,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:38,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:30:38,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-28 14:30:38,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:30:38,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 432 [2020-10-28 14:30:38,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:30:38,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:30:38,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 14:30:38,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:30:38,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 14:30:38,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:30:39,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:30:39,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:30:39,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:39,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:30:39,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:30:39,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:30:39,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:30:39,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:30:39,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:30:39,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:30:39,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:30:39,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:30:39,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:30:39,020 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:30:39,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1695663450] [2020-10-28 14:30:39,020 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:30:39,021 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-28 14:30:39,021 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455477379] [2020-10-28 14:30:39,021 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 14:30:39,021 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:30:39,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 14:30:39,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-28 14:30:39,022 INFO L87 Difference]: Start difference. First operand 99 states and 119 transitions. Second operand 13 states. [2020-10-28 14:30:40,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:30:40,754 INFO L93 Difference]: Finished difference Result 163 states and 199 transitions. [2020-10-28 14:30:40,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-28 14:30:40,754 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 31 [2020-10-28 14:30:40,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:30:40,756 INFO L225 Difference]: With dead ends: 163 [2020-10-28 14:30:40,756 INFO L226 Difference]: Without dead ends: 159 [2020-10-28 14:30:40,757 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=116, Invalid=696, Unknown=0, NotChecked=0, Total=812 [2020-10-28 14:30:40,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-28 14:30:40,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 103. [2020-10-28 14:30:40,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-28 14:30:40,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 125 transitions. [2020-10-28 14:30:40,770 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 125 transitions. Word has length 31 [2020-10-28 14:30:40,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:30:40,771 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 125 transitions. [2020-10-28 14:30:40,771 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 14:30:40,771 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 125 transitions. [2020-10-28 14:30:40,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-28 14:30:40,771 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:30:40,772 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:30:40,772 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-28 14:30:40,772 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:30:40,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:30:40,772 INFO L82 PathProgramCache]: Analyzing trace with hash 487963426, now seen corresponding path program 2 times [2020-10-28 14:30:40,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:30:40,773 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [88681536] [2020-10-28 14:30:40,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:30:40,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:30:40,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:40,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:30:40,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 14:30:40,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:30:40,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-28 14:30:40,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:30:40,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:30:40,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 14:30:40,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:30:40,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-28 14:30:40,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:30:41,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:30:41,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:30:41,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:41,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:30:41,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:30:41,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:30:41,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 14:30:41,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:30:41,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:30:41,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:30:41,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:30:41,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:30:41,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-28 14:30:41,114 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:30:41,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [88681536] [2020-10-28 14:30:41,115 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:30:41,115 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 14:30:41,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603659973] [2020-10-28 14:30:41,116 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 14:30:41,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:30:41,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 14:30:41,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-28 14:30:41,118 INFO L87 Difference]: Start difference. First operand 103 states and 125 transitions. Second operand 11 states. [2020-10-28 14:30:41,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:30:41,719 INFO L93 Difference]: Finished difference Result 126 states and 151 transitions. [2020-10-28 14:30:41,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 14:30:41,719 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 32 [2020-10-28 14:30:41,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:30:41,720 INFO L225 Difference]: With dead ends: 126 [2020-10-28 14:30:41,720 INFO L226 Difference]: Without dead ends: 109 [2020-10-28 14:30:41,721 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2020-10-28 14:30:41,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-28 14:30:41,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 98. [2020-10-28 14:30:41,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-28 14:30:41,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 118 transitions. [2020-10-28 14:30:41,742 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 118 transitions. Word has length 32 [2020-10-28 14:30:41,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:30:41,743 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 118 transitions. [2020-10-28 14:30:41,743 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 14:30:41,743 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 118 transitions. [2020-10-28 14:30:41,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-28 14:30:41,743 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:30:41,744 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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 14:30:41,744 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-28 14:30:41,744 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:30:41,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:30:41,745 INFO L82 PathProgramCache]: Analyzing trace with hash -29974689, now seen corresponding path program 2 times [2020-10-28 14:30:41,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:30:41,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1643213514] [2020-10-28 14:30:41,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:30:41,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:30:41,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:41,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:42,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:30:42,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 14:30:42,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:30:42,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 933 [2020-10-28 14:30:42,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:30:42,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:30:42,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:30:42,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:30:42,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 14:30:42,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:30:42,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:30:42,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:30:42,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:42,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:30:42,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:30:42,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:30:42,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:30:42,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:30:42,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:30:42,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:30:42,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:30:42,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:30:42,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:30:42,802 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 14:30:42,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1643213514] [2020-10-28 14:30:42,803 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:30:42,803 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 14:30:42,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834698840] [2020-10-28 14:30:42,803 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 14:30:42,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:30:42,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 14:30:42,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-28 14:30:42,804 INFO L87 Difference]: Start difference. First operand 98 states and 118 transitions. Second operand 8 states. [2020-10-28 14:30:43,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:30:43,291 INFO L93 Difference]: Finished difference Result 126 states and 151 transitions. [2020-10-28 14:30:43,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 14:30:43,292 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2020-10-28 14:30:43,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:30:43,293 INFO L225 Difference]: With dead ends: 126 [2020-10-28 14:30:43,293 INFO L226 Difference]: Without dead ends: 94 [2020-10-28 14:30:43,294 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-10-28 14:30:43,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-28 14:30:43,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 90. [2020-10-28 14:30:43,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-28 14:30:43,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 109 transitions. [2020-10-28 14:30:43,303 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 109 transitions. Word has length 32 [2020-10-28 14:30:43,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:30:43,303 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 109 transitions. [2020-10-28 14:30:43,303 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 14:30:43,303 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 109 transitions. [2020-10-28 14:30:43,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-28 14:30:43,304 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:30:43,304 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:30:43,304 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-28 14:30:43,304 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:30:43,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:30:43,305 INFO L82 PathProgramCache]: Analyzing trace with hash 980797264, now seen corresponding path program 5 times [2020-10-28 14:30:43,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:30:43,305 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1322004669] [2020-10-28 14:30:43,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:30:43,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:30:43,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:43,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:30:43,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 14:30:43,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:30:43,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 277 [2020-10-28 14:30:43,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:30:43,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:30:43,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 14:30:43,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:30:43,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 14:30:43,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:30:43,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:30:43,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:30:43,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:43,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:30:43,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:30:43,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:30:43,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:30:43,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:30:43,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:30:43,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:30:43,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:30:43,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:30:43,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:30:43,932 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:30:43,932 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1322004669] [2020-10-28 14:30:43,932 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:30:43,932 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 14:30:43,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47478468] [2020-10-28 14:30:43,933 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 14:30:43,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:30:43,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 14:30:43,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-28 14:30:43,934 INFO L87 Difference]: Start difference. First operand 90 states and 109 transitions. Second operand 12 states. [2020-10-28 14:30:45,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:30:45,096 INFO L93 Difference]: Finished difference Result 132 states and 157 transitions. [2020-10-28 14:30:45,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 14:30:45,097 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 32 [2020-10-28 14:30:45,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:30:45,098 INFO L225 Difference]: With dead ends: 132 [2020-10-28 14:30:45,098 INFO L226 Difference]: Without dead ends: 111 [2020-10-28 14:30:45,098 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2020-10-28 14:30:45,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-28 14:30:45,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 90. [2020-10-28 14:30:45,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-28 14:30:45,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 108 transitions. [2020-10-28 14:30:45,109 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 108 transitions. Word has length 32 [2020-10-28 14:30:45,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:30:45,109 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 108 transitions. [2020-10-28 14:30:45,110 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 14:30:45,110 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 108 transitions. [2020-10-28 14:30:45,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-28 14:30:45,110 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:30:45,110 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:30:45,111 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-28 14:30:45,111 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:30:45,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:30:45,111 INFO L82 PathProgramCache]: Analyzing trace with hash -745006590, now seen corresponding path program 3 times [2020-10-28 14:30:45,111 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:30:45,111 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [117397771] [2020-10-28 14:30:45,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:30:45,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:30:45,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:45,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:45,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:46,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:30:46,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 14:30:46,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:30:46,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1306 [2020-10-28 14:30:46,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:30:46,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:30:46,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 14:30:46,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:30:46,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 14:30:46,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:30:46,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:30:46,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:30:46,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:46,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:30:46,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:30:46,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:30:46,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:30:46,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:30:46,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:30:46,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:30:46,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:30:46,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:30:46,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:30:46,815 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:30:46,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [117397771] [2020-10-28 14:30:46,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:30:46,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-28 14:30:46,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622353047] [2020-10-28 14:30:46,816 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 14:30:46,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:30:46,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 14:30:46,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2020-10-28 14:30:46,817 INFO L87 Difference]: Start difference. First operand 90 states and 108 transitions. Second operand 13 states. [2020-10-28 14:30:47,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:30:47,549 INFO L93 Difference]: Finished difference Result 122 states and 146 transitions. [2020-10-28 14:30:47,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 14:30:47,549 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 32 [2020-10-28 14:30:47,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:30:47,551 INFO L225 Difference]: With dead ends: 122 [2020-10-28 14:30:47,551 INFO L226 Difference]: Without dead ends: 118 [2020-10-28 14:30:47,551 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2020-10-28 14:30:47,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-28 14:30:47,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 93. [2020-10-28 14:30:47,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-28 14:30:47,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 111 transitions. [2020-10-28 14:30:47,562 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 111 transitions. Word has length 32 [2020-10-28 14:30:47,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:30:47,563 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 111 transitions. [2020-10-28 14:30:47,563 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 14:30:47,563 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 111 transitions. [2020-10-28 14:30:47,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-28 14:30:47,563 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:30:47,564 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:30:47,564 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-28 14:30:47,564 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:30:47,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:30:47,564 INFO L82 PathProgramCache]: Analyzing trace with hash 719630562, now seen corresponding path program 3 times [2020-10-28 14:30:47,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:30:47,565 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [896724905] [2020-10-28 14:30:47,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:30:47,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:30:47,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:47,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:47,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:48,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:51,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:30:51,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 14:30:51,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 14:30:51,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4138 [2020-10-28 14:30:51,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:30:51,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:30:51,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 14:30:51,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:30:51,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 14:30:51,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:30:52,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:30:52,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:30:52,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:52,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:30:52,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:30:52,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:30:52,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:30:52,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:30:52,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:30:52,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:30:52,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:30:52,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:30:52,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:30:52,388 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-28 14:30:52,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [896724905] [2020-10-28 14:30:52,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:30:52,389 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-28 14:30:52,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198243977] [2020-10-28 14:30:52,389 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 14:30:52,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:30:52,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 14:30:52,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-10-28 14:30:52,390 INFO L87 Difference]: Start difference. First operand 93 states and 111 transitions. Second operand 13 states. [2020-10-28 14:30:53,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:30:53,148 INFO L93 Difference]: Finished difference Result 134 states and 158 transitions. [2020-10-28 14:30:53,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 14:30:53,149 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 32 [2020-10-28 14:30:53,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:30:53,150 INFO L225 Difference]: With dead ends: 134 [2020-10-28 14:30:53,150 INFO L226 Difference]: Without dead ends: 130 [2020-10-28 14:30:53,151 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=105, Invalid=315, Unknown=0, NotChecked=0, Total=420 [2020-10-28 14:30:53,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-10-28 14:30:53,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 86. [2020-10-28 14:30:53,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-28 14:30:53,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 101 transitions. [2020-10-28 14:30:53,164 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 101 transitions. Word has length 32 [2020-10-28 14:30:53,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:30:53,164 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 101 transitions. [2020-10-28 14:30:53,165 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 14:30:53,165 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 101 transitions. [2020-10-28 14:30:53,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-28 14:30:53,165 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:30:53,165 INFO L422 BasicCegarLoop]: trace histogram [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 14:30:53,166 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-28 14:30:53,166 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:30:53,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:30:53,166 INFO L82 PathProgramCache]: Analyzing trace with hash -211259753, now seen corresponding path program 1 times [2020-10-28 14:30:53,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:30:53,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [391815162] [2020-10-28 14:30:53,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:30:53,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:30:53,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:53,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:30:53,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-28 14:30:53,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:30:53,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 520 [2020-10-28 14:30:53,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:30:53,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:30:53,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 14:30:53,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:30:53,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 14:30:53,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:30:54,347 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 54 [2020-10-28 14:30:54,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:30:54,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:30:54,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:54,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:30:54,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:30:54,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:30:54,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:30:54,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:30:54,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:30:54,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:30:54,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:30:54,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:30:54,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:30:54,566 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:30:54,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [391815162] [2020-10-28 14:30:54,566 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:30:54,567 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 14:30:54,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840587518] [2020-10-28 14:30:54,567 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 14:30:54,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:30:54,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 14:30:54,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-10-28 14:30:54,568 INFO L87 Difference]: Start difference. First operand 86 states and 101 transitions. Second operand 14 states. [2020-10-28 14:30:55,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:30:55,458 INFO L93 Difference]: Finished difference Result 125 states and 149 transitions. [2020-10-28 14:30:55,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 14:30:55,459 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 33 [2020-10-28 14:30:55,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:30:55,460 INFO L225 Difference]: With dead ends: 125 [2020-10-28 14:30:55,460 INFO L226 Difference]: Without dead ends: 121 [2020-10-28 14:30:55,461 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2020-10-28 14:30:55,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-28 14:30:55,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 83. [2020-10-28 14:30:55,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-28 14:30:55,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 98 transitions. [2020-10-28 14:30:55,475 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 98 transitions. Word has length 33 [2020-10-28 14:30:55,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:30:55,475 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 98 transitions. [2020-10-28 14:30:55,475 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 14:30:55,475 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 98 transitions. [2020-10-28 14:30:55,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-28 14:30:55,476 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:30:55,476 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:30:55,476 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-28 14:30:55,476 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:30:55,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:30:55,477 INFO L82 PathProgramCache]: Analyzing trace with hash -1428102660, now seen corresponding path program 2 times [2020-10-28 14:30:55,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:30:55,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1405584748] [2020-10-28 14:30:55,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:30:55,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:30:55,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:56,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:30:56,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-28 14:30:56,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:30:56,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 688 [2020-10-28 14:30:56,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:30:56,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:30:56,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 14:30:56,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:30:56,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 14:30:56,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:30:56,880 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 61 [2020-10-28 14:30:57,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:30:57,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:30:57,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:57,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:30:57,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:30:57,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:30:57,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:30:57,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:30:57,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:30:57,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:30:57,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:30:57,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:30:57,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:30:57,067 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:30:57,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1405584748] [2020-10-28 14:30:57,068 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:30:57,068 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 14:30:57,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855191062] [2020-10-28 14:30:57,068 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 14:30:57,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:30:57,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 14:30:57,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-28 14:30:57,069 INFO L87 Difference]: Start difference. First operand 83 states and 98 transitions. Second operand 14 states. [2020-10-28 14:30:57,232 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 56 [2020-10-28 14:30:57,967 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 59 [2020-10-28 14:30:58,137 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 63 [2020-10-28 14:30:58,372 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 54 [2020-10-28 14:30:58,681 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-10-28 14:30:59,040 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 93 [2020-10-28 14:30:59,229 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 76 [2020-10-28 14:30:59,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:30:59,857 INFO L93 Difference]: Finished difference Result 130 states and 153 transitions. [2020-10-28 14:30:59,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-28 14:30:59,857 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 33 [2020-10-28 14:30:59,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:30:59,859 INFO L225 Difference]: With dead ends: 130 [2020-10-28 14:30:59,859 INFO L226 Difference]: Without dead ends: 126 [2020-10-28 14:30:59,859 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=123, Invalid=689, Unknown=0, NotChecked=0, Total=812 [2020-10-28 14:30:59,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-28 14:30:59,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 86. [2020-10-28 14:30:59,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-28 14:30:59,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 102 transitions. [2020-10-28 14:30:59,873 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 102 transitions. Word has length 33 [2020-10-28 14:30:59,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:30:59,873 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 102 transitions. [2020-10-28 14:30:59,873 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 14:30:59,873 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 102 transitions. [2020-10-28 14:30:59,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-28 14:30:59,874 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:30:59,874 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 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 14:30:59,874 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-28 14:30:59,874 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:30:59,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:30:59,875 INFO L82 PathProgramCache]: Analyzing trace with hash -1124493619, now seen corresponding path program 3 times [2020-10-28 14:30:59,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:30:59,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [626112422] [2020-10-28 14:30:59,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:30:59,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:31:00,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:31:00,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:31:00,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-28 14:31:00,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:31:00,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 865 [2020-10-28 14:31:00,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:31:00,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:31:00,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 14:31:00,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:31:00,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 14:31:00,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:31:01,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:31:01,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:31:01,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:31:01,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:31:01,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:31:01,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:31:01,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:31:01,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:31:01,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:31:01,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:31:01,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:31:01,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:31:01,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:31:01,348 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:31:01,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [626112422] [2020-10-28 14:31:01,348 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:31:01,349 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-28 14:31:01,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013688432] [2020-10-28 14:31:01,349 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 14:31:01,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:31:01,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 14:31:01,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-10-28 14:31:01,350 INFO L87 Difference]: Start difference. First operand 86 states and 102 transitions. Second operand 13 states. [2020-10-28 14:31:01,812 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2020-10-28 14:31:02,144 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 63 [2020-10-28 14:31:03,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:31:03,090 INFO L93 Difference]: Finished difference Result 131 states and 156 transitions. [2020-10-28 14:31:03,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 14:31:03,091 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 33 [2020-10-28 14:31:03,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:31:03,092 INFO L225 Difference]: With dead ends: 131 [2020-10-28 14:31:03,093 INFO L226 Difference]: Without dead ends: 123 [2020-10-28 14:31:03,093 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=121, Invalid=529, Unknown=0, NotChecked=0, Total=650 [2020-10-28 14:31:03,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-10-28 14:31:03,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 94. [2020-10-28 14:31:03,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-28 14:31:03,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 113 transitions. [2020-10-28 14:31:03,109 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 113 transitions. Word has length 33 [2020-10-28 14:31:03,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:31:03,109 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 113 transitions. [2020-10-28 14:31:03,109 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 14:31:03,109 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 113 transitions. [2020-10-28 14:31:03,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-28 14:31:03,110 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:31:03,110 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:31:03,110 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-28 14:31:03,110 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:31:03,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:31:03,111 INFO L82 PathProgramCache]: Analyzing trace with hash -1219313333, now seen corresponding path program 6 times [2020-10-28 14:31:03,111 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:31:03,111 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2141608958] [2020-10-28 14:31:03,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:31:03,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:31:03,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:31:03,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:31:03,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-28 14:31:03,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:31:03,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 716 [2020-10-28 14:31:03,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:31:03,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:31:03,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 14:31:03,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:31:03,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 14:31:03,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:31:04,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:31:04,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:31:04,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:31:04,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:31:04,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:31:04,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:31:04,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:31:04,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:31:04,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:31:04,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:31:04,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:31:04,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:31:04,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:31:04,287 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:31:04,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2141608958] [2020-10-28 14:31:04,288 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:31:04,288 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 14:31:04,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380641292] [2020-10-28 14:31:04,288 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 14:31:04,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:31:04,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 14:31:04,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-28 14:31:04,289 INFO L87 Difference]: Start difference. First operand 94 states and 113 transitions. Second operand 14 states. [2020-10-28 14:31:06,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:31:06,113 INFO L93 Difference]: Finished difference Result 147 states and 177 transitions. [2020-10-28 14:31:06,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-28 14:31:06,114 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 33 [2020-10-28 14:31:06,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:31:06,116 INFO L225 Difference]: With dead ends: 147 [2020-10-28 14:31:06,116 INFO L226 Difference]: Without dead ends: 143 [2020-10-28 14:31:06,117 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=133, Invalid=797, Unknown=0, NotChecked=0, Total=930 [2020-10-28 14:31:06,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-10-28 14:31:06,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 94. [2020-10-28 14:31:06,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-28 14:31:06,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 113 transitions. [2020-10-28 14:31:06,133 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 113 transitions. Word has length 33 [2020-10-28 14:31:06,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:31:06,134 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 113 transitions. [2020-10-28 14:31:06,134 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 14:31:06,134 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 113 transitions. [2020-10-28 14:31:06,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-28 14:31:06,134 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:31:06,135 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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 14:31:06,135 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-28 14:31:06,135 INFO L429 AbstractCegarLoop]: === Iteration 38 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:31:06,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:31:06,135 INFO L82 PathProgramCache]: Analyzing trace with hash -2060735484, now seen corresponding path program 3 times [2020-10-28 14:31:06,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:31:06,136 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2092383596] [2020-10-28 14:31:06,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:31:06,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:31:06,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:31:06,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:31:06,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-28 14:31:06,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:31:06,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 401 [2020-10-28 14:31:06,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:31:06,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:31:06,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 14:31:06,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:31:06,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 14:31:06,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:31:06,875 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 48 [2020-10-28 14:31:07,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:31:07,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:31:07,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:31:07,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:31:07,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:31:07,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:31:07,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:31:07,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:31:07,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:31:07,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:31:07,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:31:07,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:31:07,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:31:07,065 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:31:07,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2092383596] [2020-10-28 14:31:07,066 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:31:07,066 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-28 14:31:07,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302567411] [2020-10-28 14:31:07,066 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 14:31:07,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:31:07,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 14:31:07,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-10-28 14:31:07,067 INFO L87 Difference]: Start difference. First operand 94 states and 113 transitions. Second operand 13 states. [2020-10-28 14:31:08,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:31:08,473 INFO L93 Difference]: Finished difference Result 136 states and 163 transitions. [2020-10-28 14:31:08,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 14:31:08,474 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-10-28 14:31:08,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:31:08,475 INFO L225 Difference]: With dead ends: 136 [2020-10-28 14:31:08,475 INFO L226 Difference]: Without dead ends: 116 [2020-10-28 14:31:08,476 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=78, Invalid=428, Unknown=0, NotChecked=0, Total=506 [2020-10-28 14:31:08,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-28 14:31:08,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 94. [2020-10-28 14:31:08,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-28 14:31:08,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 112 transitions. [2020-10-28 14:31:08,491 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 112 transitions. Word has length 34 [2020-10-28 14:31:08,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:31:08,491 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 112 transitions. [2020-10-28 14:31:08,492 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 14:31:08,492 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 112 transitions. [2020-10-28 14:31:08,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-28 14:31:08,492 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:31:08,492 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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 14:31:08,492 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-28 14:31:08,493 INFO L429 AbstractCegarLoop]: === Iteration 39 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:31:08,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:31:08,493 INFO L82 PathProgramCache]: Analyzing trace with hash -1623373273, now seen corresponding path program 4 times [2020-10-28 14:31:08,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:31:08,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [557783955] [2020-10-28 14:31:08,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:31:08,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:31:08,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:31:08,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:31:08,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:31:08,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:31:09,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:31:12,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:31:12,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-28 14:31:12,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 14:31:12,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4280 [2020-10-28 14:31:12,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:31:12,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:31:12,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 14:31:12,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:31:12,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 14:31:12,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:31:13,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:31:13,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:31:13,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:31:13,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:31:13,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:31:13,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:31:13,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:31:13,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:31:13,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:31:13,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:31:13,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:31:13,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:31:13,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:31:13,176 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:31:13,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [557783955] [2020-10-28 14:31:13,177 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:31:13,177 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-28 14:31:13,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984679723] [2020-10-28 14:31:13,177 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 14:31:13,177 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:31:13,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 14:31:13,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2020-10-28 14:31:13,178 INFO L87 Difference]: Start difference. First operand 94 states and 112 transitions. Second operand 13 states. [2020-10-28 14:31:14,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:31:14,147 INFO L93 Difference]: Finished difference Result 146 states and 177 transitions. [2020-10-28 14:31:14,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 14:31:14,148 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-10-28 14:31:14,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:31:14,149 INFO L225 Difference]: With dead ends: 146 [2020-10-28 14:31:14,150 INFO L226 Difference]: Without dead ends: 133 [2020-10-28 14:31:14,150 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2020-10-28 14:31:14,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-10-28 14:31:14,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 99. [2020-10-28 14:31:14,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-28 14:31:14,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 117 transitions. [2020-10-28 14:31:14,167 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 117 transitions. Word has length 34 [2020-10-28 14:31:14,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:31:14,167 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 117 transitions. [2020-10-28 14:31:14,167 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 14:31:14,167 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 117 transitions. [2020-10-28 14:31:14,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-28 14:31:14,168 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:31:14,168 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:31:14,168 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-28 14:31:14,168 INFO L429 AbstractCegarLoop]: === Iteration 40 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:31:14,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:31:14,169 INFO L82 PathProgramCache]: Analyzing trace with hash -2141311388, now seen corresponding path program 4 times [2020-10-28 14:31:14,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:31:14,169 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1902254265] [2020-10-28 14:31:14,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:31:14,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:31:14,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:31:14,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:31:14,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:31:14,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-28 14:31:14,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:31:14,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 803 [2020-10-28 14:31:14,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:31:14,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:31:14,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 14:31:14,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:31:14,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 14:31:14,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:31:15,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:31:15,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:31:15,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:31:15,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:31:15,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:31:15,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:31:15,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:31:15,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:31:15,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:31:15,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:31:15,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:31:15,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:31:15,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:31:15,179 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:31:15,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1902254265] [2020-10-28 14:31:15,180 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:31:15,180 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 14:31:15,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363530290] [2020-10-28 14:31:15,180 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 14:31:15,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:31:15,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 14:31:15,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-28 14:31:15,181 INFO L87 Difference]: Start difference. First operand 99 states and 117 transitions. Second operand 10 states. [2020-10-28 14:31:15,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:31:15,933 INFO L93 Difference]: Finished difference Result 137 states and 164 transitions. [2020-10-28 14:31:15,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 14:31:15,933 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 34 [2020-10-28 14:31:15,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:31:15,934 INFO L225 Difference]: With dead ends: 137 [2020-10-28 14:31:15,935 INFO L226 Difference]: Without dead ends: 126 [2020-10-28 14:31:15,935 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2020-10-28 14:31:15,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-28 14:31:15,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 102. [2020-10-28 14:31:15,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-10-28 14:31:15,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 122 transitions. [2020-10-28 14:31:15,953 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 122 transitions. Word has length 34 [2020-10-28 14:31:15,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:31:15,953 INFO L481 AbstractCegarLoop]: Abstraction has 102 states and 122 transitions. [2020-10-28 14:31:15,953 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 14:31:15,953 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 122 transitions. [2020-10-28 14:31:15,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-28 14:31:15,954 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:31:15,954 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:31:15,954 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-28 14:31:15,954 INFO L429 AbstractCegarLoop]: === Iteration 41 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:31:15,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:31:15,955 INFO L82 PathProgramCache]: Analyzing trace with hash -1130539435, now seen corresponding path program 7 times [2020-10-28 14:31:15,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:31:15,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [66366851] [2020-10-28 14:31:15,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:31:15,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:31:16,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:31:16,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:31:16,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-28 14:31:16,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:31:16,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 594 [2020-10-28 14:31:16,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:31:16,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:31:16,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 14:31:16,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:31:16,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 14:31:16,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:31:17,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:31:17,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:31:17,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:31:17,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:31:17,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:31:17,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:31:17,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 14:31:17,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:31:17,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:31:17,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:31:17,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:31:17,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:31:17,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:31:17,019 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:31:17,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [66366851] [2020-10-28 14:31:17,020 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:31:17,020 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 14:31:17,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415425924] [2020-10-28 14:31:17,020 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 14:31:17,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:31:17,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 14:31:17,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-10-28 14:31:17,021 INFO L87 Difference]: Start difference. First operand 102 states and 122 transitions. Second operand 14 states. [2020-10-28 14:31:18,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:31:18,549 INFO L93 Difference]: Finished difference Result 143 states and 170 transitions. [2020-10-28 14:31:18,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-28 14:31:18,549 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 34 [2020-10-28 14:31:18,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:31:18,551 INFO L225 Difference]: With dead ends: 143 [2020-10-28 14:31:18,551 INFO L226 Difference]: Without dead ends: 139 [2020-10-28 14:31:18,552 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702 [2020-10-28 14:31:18,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-10-28 14:31:18,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 109. [2020-10-28 14:31:18,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-28 14:31:18,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 129 transitions. [2020-10-28 14:31:18,572 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 129 transitions. Word has length 34 [2020-10-28 14:31:18,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:31:18,573 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 129 transitions. [2020-10-28 14:31:18,573 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 14:31:18,573 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 129 transitions. [2020-10-28 14:31:18,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-28 14:31:18,574 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:31:18,574 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:31:18,574 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-28 14:31:18,574 INFO L429 AbstractCegarLoop]: === Iteration 42 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:31:18,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:31:18,575 INFO L82 PathProgramCache]: Analyzing trace with hash 1438624007, now seen corresponding path program 5 times [2020-10-28 14:31:18,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:31:18,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1361631148] [2020-10-28 14:31:18,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:31:18,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:31:18,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:31:18,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:31:19,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:31:20,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:31:20,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-28 14:31:20,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:31:20,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1790 [2020-10-28 14:31:20,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:31:20,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:31:20,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 14:31:20,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:31:20,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 14:31:20,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:31:20,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:31:20,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:31:20,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:31:20,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:31:20,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:31:20,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:31:20,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:31:20,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:31:20,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:31:20,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:31:20,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:31:20,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:31:20,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:31:20,943 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:31:20,943 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1361631148] [2020-10-28 14:31:20,944 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:31:20,944 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 14:31:20,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806975363] [2020-10-28 14:31:20,944 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 14:31:20,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:31:20,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 14:31:20,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2020-10-28 14:31:20,945 INFO L87 Difference]: Start difference. First operand 109 states and 129 transitions. Second operand 14 states. [2020-10-28 14:31:21,288 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2020-10-28 14:31:22,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:31:22,394 INFO L93 Difference]: Finished difference Result 150 states and 179 transitions. [2020-10-28 14:31:22,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 14:31:22,395 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 34 [2020-10-28 14:31:22,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:31:22,396 INFO L225 Difference]: With dead ends: 150 [2020-10-28 14:31:22,396 INFO L226 Difference]: Without dead ends: 146 [2020-10-28 14:31:22,397 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=94, Invalid=368, Unknown=0, NotChecked=0, Total=462 [2020-10-28 14:31:22,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-28 14:31:22,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 114. [2020-10-28 14:31:22,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-28 14:31:22,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 135 transitions. [2020-10-28 14:31:22,415 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 135 transitions. Word has length 34 [2020-10-28 14:31:22,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:31:22,415 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 135 transitions. [2020-10-28 14:31:22,415 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 14:31:22,415 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 135 transitions. [2020-10-28 14:31:22,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-28 14:31:22,416 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:31:22,416 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] [2020-10-28 14:31:22,416 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-28 14:31:22,416 INFO L429 AbstractCegarLoop]: === Iteration 43 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:31:22,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:31:22,417 INFO L82 PathProgramCache]: Analyzing trace with hash 206228860, now seen corresponding path program 2 times [2020-10-28 14:31:22,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:31:22,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1070337165] [2020-10-28 14:31:22,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:31:22,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:31:22,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:31:22,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:31:22,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:31:24,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:31:24,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-28 14:31:24,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:31:24,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2240 [2020-10-28 14:31:24,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:31:24,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:31:24,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 14:31:24,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:31:24,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 14:31:24,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:31:24,974 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 35 [2020-10-28 14:31:25,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:31:25,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:31:25,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:31:25,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:31:25,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:31:25,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:31:25,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:31:25,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:31:25,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:31:25,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:31:25,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:31:25,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:31:25,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:31:25,315 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:31:25,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1070337165] [2020-10-28 14:31:25,316 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:31:25,316 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 14:31:25,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212362704] [2020-10-28 14:31:25,316 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 14:31:25,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:31:25,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 14:31:25,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2020-10-28 14:31:25,317 INFO L87 Difference]: Start difference. First operand 114 states and 135 transitions. Second operand 14 states. [2020-10-28 14:31:26,309 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 54 [2020-10-28 14:31:26,506 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 55 [2020-10-28 14:31:27,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:31:27,215 INFO L93 Difference]: Finished difference Result 164 states and 196 transitions. [2020-10-28 14:31:27,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 14:31:27,218 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 35 [2020-10-28 14:31:27,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:31:27,219 INFO L225 Difference]: With dead ends: 164 [2020-10-28 14:31:27,219 INFO L226 Difference]: Without dead ends: 138 [2020-10-28 14:31:27,220 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=103, Invalid=449, Unknown=0, NotChecked=0, Total=552 [2020-10-28 14:31:27,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-28 14:31:27,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 109. [2020-10-28 14:31:27,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-28 14:31:27,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 128 transitions. [2020-10-28 14:31:27,239 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 128 transitions. Word has length 35 [2020-10-28 14:31:27,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:31:27,239 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 128 transitions. [2020-10-28 14:31:27,239 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 14:31:27,240 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 128 transitions. [2020-10-28 14:31:27,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-28 14:31:27,240 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:31:27,240 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] [2020-10-28 14:31:27,240 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-28 14:31:27,241 INFO L429 AbstractCegarLoop]: === Iteration 44 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:31:27,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:31:27,241 INFO L82 PathProgramCache]: Analyzing trace with hash -17955760, now seen corresponding path program 6 times [2020-10-28 14:31:27,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:31:27,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [533300743] [2020-10-28 14:31:27,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:31:27,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:31:27,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:31:27,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:31:27,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-28 14:31:27,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:31:27,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 289 [2020-10-28 14:31:27,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:31:27,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:31:27,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 14:31:27,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:31:27,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 14:31:27,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:31:27,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:31:27,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:31:27,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:31:27,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:31:27,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:31:27,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:31:27,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 14:31:27,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:31:27,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:31:27,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:31:27,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:31:27,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:31:27,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:31:27,876 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:31:27,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [533300743] [2020-10-28 14:31:27,876 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:31:27,876 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-28 14:31:27,876 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435844931] [2020-10-28 14:31:27,876 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 14:31:27,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:31:27,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 14:31:27,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2020-10-28 14:31:27,877 INFO L87 Difference]: Start difference. First operand 109 states and 128 transitions. Second operand 13 states. [2020-10-28 14:31:28,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:31:28,926 INFO L93 Difference]: Finished difference Result 147 states and 174 transitions. [2020-10-28 14:31:28,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 14:31:28,926 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 35 [2020-10-28 14:31:28,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:31:28,927 INFO L225 Difference]: With dead ends: 147 [2020-10-28 14:31:28,928 INFO L226 Difference]: Without dead ends: 139 [2020-10-28 14:31:28,928 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2020-10-28 14:31:28,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-10-28 14:31:28,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 114. [2020-10-28 14:31:28,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-28 14:31:28,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 134 transitions. [2020-10-28 14:31:28,952 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 134 transitions. Word has length 35 [2020-10-28 14:31:28,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:31:28,952 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 134 transitions. [2020-10-28 14:31:28,952 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 14:31:28,952 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 134 transitions. [2020-10-28 14:31:28,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-28 14:31:28,953 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:31:28,953 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 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 14:31:28,953 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-28 14:31:28,953 INFO L429 AbstractCegarLoop]: === Iteration 45 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:31:28,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:31:28,954 INFO L82 PathProgramCache]: Analyzing trace with hash -1238187982, now seen corresponding path program 3 times [2020-10-28 14:31:28,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:31:28,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1418415578] [2020-10-28 14:31:28,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:31:29,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:31:29,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:31:30,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:31:30,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-28 14:31:30,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:31:30,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1030 [2020-10-28 14:31:30,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:31:30,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:31:30,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 14:31:30,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:31:30,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-28 14:31:30,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:31:30,414 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 41 [2020-10-28 14:31:30,698 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 53 [2020-10-28 14:31:30,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:31:30,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:31:30,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:31:30,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:31:30,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:31:30,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:31:30,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:31:30,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:31:30,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:31:30,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:31:30,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:31:30,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:31:30,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:31:30,877 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:31:30,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1418415578] [2020-10-28 14:31:30,878 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:31:30,878 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-28 14:31:30,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453056249] [2020-10-28 14:31:30,878 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-28 14:31:30,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:31:30,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-28 14:31:30,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2020-10-28 14:31:30,880 INFO L87 Difference]: Start difference. First operand 114 states and 134 transitions. Second operand 15 states. [2020-10-28 14:31:31,603 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 57 [2020-10-28 14:31:31,858 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 54 [2020-10-28 14:31:32,252 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 51 [2020-10-28 14:31:32,534 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 69 [2020-10-28 14:31:33,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:31:33,014 INFO L93 Difference]: Finished difference Result 148 states and 176 transitions. [2020-10-28 14:31:33,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 14:31:33,015 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 35 [2020-10-28 14:31:33,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:31:33,015 INFO L225 Difference]: With dead ends: 148 [2020-10-28 14:31:33,015 INFO L226 Difference]: Without dead ends: 144 [2020-10-28 14:31:33,016 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=91, Invalid=509, Unknown=0, NotChecked=0, Total=600 [2020-10-28 14:31:33,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-28 14:31:33,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 116. [2020-10-28 14:31:33,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-28 14:31:33,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 136 transitions. [2020-10-28 14:31:33,032 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 136 transitions. Word has length 35 [2020-10-28 14:31:33,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:31:33,033 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 136 transitions. [2020-10-28 14:31:33,033 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-28 14:31:33,033 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 136 transitions. [2020-10-28 14:31:33,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-28 14:31:33,033 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:31:33,033 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:31:33,033 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-28 14:31:33,034 INFO L429 AbstractCegarLoop]: === Iteration 46 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:31:33,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:31:33,034 INFO L82 PathProgramCache]: Analyzing trace with hash 1839936407, now seen corresponding path program 4 times [2020-10-28 14:31:33,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:31:33,034 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [79434531] [2020-10-28 14:31:33,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:31:33,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:31:33,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:31:34,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:31:34,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-28 14:31:34,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:31:34,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1070 [2020-10-28 14:31:34,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:31:34,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:31:34,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 14:31:34,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:31:34,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-28 14:31:34,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:31:34,891 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 53 [2020-10-28 14:31:35,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:31:35,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:31:35,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:31:35,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:31:35,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:31:35,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:31:35,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:31:35,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:31:35,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:31:35,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:31:35,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:31:35,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:31:35,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:31:35,079 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:31:35,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [79434531] [2020-10-28 14:31:35,079 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:31:35,079 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-28 14:31:35,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495121923] [2020-10-28 14:31:35,079 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-28 14:31:35,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:31:35,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-28 14:31:35,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2020-10-28 14:31:35,080 INFO L87 Difference]: Start difference. First operand 116 states and 136 transitions. Second operand 15 states. [2020-10-28 14:31:37,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:31:37,017 INFO L93 Difference]: Finished difference Result 164 states and 194 transitions. [2020-10-28 14:31:37,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 14:31:37,018 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 35 [2020-10-28 14:31:37,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:31:37,019 INFO L225 Difference]: With dead ends: 164 [2020-10-28 14:31:37,019 INFO L226 Difference]: Without dead ends: 160 [2020-10-28 14:31:37,020 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=109, Invalid=541, Unknown=0, NotChecked=0, Total=650 [2020-10-28 14:31:37,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-10-28 14:31:37,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 123. [2020-10-28 14:31:37,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-10-28 14:31:37,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 146 transitions. [2020-10-28 14:31:37,043 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 146 transitions. Word has length 35 [2020-10-28 14:31:37,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:31:37,043 INFO L481 AbstractCegarLoop]: Abstraction has 123 states and 146 transitions. [2020-10-28 14:31:37,043 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-28 14:31:37,043 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 146 transitions. [2020-10-28 14:31:37,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-28 14:31:37,044 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:31:37,044 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 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 14:31:37,044 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-28 14:31:37,044 INFO L429 AbstractCegarLoop]: === Iteration 47 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:31:37,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:31:37,045 INFO L82 PathProgramCache]: Analyzing trace with hash 2143545448, now seen corresponding path program 5 times [2020-10-28 14:31:37,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:31:37,045 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [588042850] [2020-10-28 14:31:37,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:31:37,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:31:37,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:31:38,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:31:38,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-28 14:31:38,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:31:38,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 974 [2020-10-28 14:31:38,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:31:38,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:31:38,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 14:31:38,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:31:38,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 14:31:38,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:31:38,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:31:38,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:31:38,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:31:38,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:31:38,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:31:38,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:31:38,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:31:38,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:31:38,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:31:38,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:31:38,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:31:38,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:31:38,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:31:38,558 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-28 14:31:38,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [588042850] [2020-10-28 14:31:38,558 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:31:38,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-28 14:31:38,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502530476] [2020-10-28 14:31:38,559 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 14:31:38,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:31:38,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 14:31:38,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-10-28 14:31:38,559 INFO L87 Difference]: Start difference. First operand 123 states and 146 transitions. Second operand 13 states. [2020-10-28 14:31:39,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:31:39,257 INFO L93 Difference]: Finished difference Result 165 states and 196 transitions. [2020-10-28 14:31:39,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 14:31:39,258 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 35 [2020-10-28 14:31:39,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:31:39,259 INFO L225 Difference]: With dead ends: 165 [2020-10-28 14:31:39,260 INFO L226 Difference]: Without dead ends: 150 [2020-10-28 14:31:39,260 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2020-10-28 14:31:39,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-10-28 14:31:39,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 128. [2020-10-28 14:31:39,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-10-28 14:31:39,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 153 transitions. [2020-10-28 14:31:39,281 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 153 transitions. Word has length 35 [2020-10-28 14:31:39,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:31:39,282 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 153 transitions. [2020-10-28 14:31:39,282 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 14:31:39,282 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 153 transitions. [2020-10-28 14:31:39,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-28 14:31:39,283 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:31:39,283 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] [2020-10-28 14:31:39,283 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-28 14:31:39,283 INFO L429 AbstractCegarLoop]: === Iteration 48 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:31:39,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:31:39,283 INFO L82 PathProgramCache]: Analyzing trace with hash -747463942, now seen corresponding path program 1 times [2020-10-28 14:31:39,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:31:39,284 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1149227854] [2020-10-28 14:31:39,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:31:39,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:31:39,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:31:39,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:31:40,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:31:40,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-28 14:31:40,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:31:40,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1465 [2020-10-28 14:31:40,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:31:40,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:31:40,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 14:31:40,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:31:40,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 14:31:40,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:31:41,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:31:41,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:31:41,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:31:41,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:31:41,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:31:41,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:31:41,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:31:41,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:31:41,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:31:41,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:31:41,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:31:41,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:31:41,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:31:41,172 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-28 14:31:41,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1149227854] [2020-10-28 14:31:41,172 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:31:41,172 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-28 14:31:41,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453155021] [2020-10-28 14:31:41,172 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 14:31:41,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:31:41,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 14:31:41,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-10-28 14:31:41,173 INFO L87 Difference]: Start difference. First operand 128 states and 153 transitions. Second operand 13 states. [2020-10-28 14:31:42,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:31:42,221 INFO L93 Difference]: Finished difference Result 158 states and 189 transitions. [2020-10-28 14:31:42,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 14:31:42,222 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 36 [2020-10-28 14:31:42,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:31:42,224 INFO L225 Difference]: With dead ends: 158 [2020-10-28 14:31:42,224 INFO L226 Difference]: Without dead ends: 154 [2020-10-28 14:31:42,224 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=104, Invalid=402, Unknown=0, NotChecked=0, Total=506 [2020-10-28 14:31:42,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-28 14:31:42,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 138. [2020-10-28 14:31:42,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-10-28 14:31:42,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 167 transitions. [2020-10-28 14:31:42,247 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 167 transitions. Word has length 36 [2020-10-28 14:31:42,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:31:42,247 INFO L481 AbstractCegarLoop]: Abstraction has 138 states and 167 transitions. [2020-10-28 14:31:42,247 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 14:31:42,248 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 167 transitions. [2020-10-28 14:31:42,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-28 14:31:42,248 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:31:42,248 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 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 14:31:42,249 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-28 14:31:42,249 INFO L429 AbstractCegarLoop]: === Iteration 49 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:31:42,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:31:42,249 INFO L82 PathProgramCache]: Analyzing trace with hash 464227785, now seen corresponding path program 5 times [2020-10-28 14:31:42,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:31:42,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1399312597] [2020-10-28 14:31:42,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:31:42,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:31:42,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:31:43,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:31:43,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-28 14:31:43,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:31:43,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 719 [2020-10-28 14:31:43,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:31:43,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:31:43,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 14:31:43,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:31:43,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 14:31:43,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:31:43,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:31:43,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:31:43,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:31:43,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:31:43,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:31:43,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:31:43,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 14:31:43,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:31:43,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:31:43,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:31:43,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:31:43,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:31:43,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:31:43,626 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:31:43,626 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1399312597] [2020-10-28 14:31:43,626 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:31:43,626 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-28 14:31:43,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551987623] [2020-10-28 14:31:43,627 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-28 14:31:43,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:31:43,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-28 14:31:43,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2020-10-28 14:31:43,627 INFO L87 Difference]: Start difference. First operand 138 states and 167 transitions. Second operand 15 states. [2020-10-28 14:31:44,574 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 67 [2020-10-28 14:31:45,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:31:45,220 INFO L93 Difference]: Finished difference Result 176 states and 212 transitions. [2020-10-28 14:31:45,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 14:31:45,227 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 36 [2020-10-28 14:31:45,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:31:45,228 INFO L225 Difference]: With dead ends: 176 [2020-10-28 14:31:45,228 INFO L226 Difference]: Without dead ends: 172 [2020-10-28 14:31:45,229 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=72, Invalid=434, Unknown=0, NotChecked=0, Total=506 [2020-10-28 14:31:45,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-10-28 14:31:45,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 140. [2020-10-28 14:31:45,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-28 14:31:45,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 169 transitions. [2020-10-28 14:31:45,251 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 169 transitions. Word has length 36 [2020-10-28 14:31:45,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:31:45,251 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 169 transitions. [2020-10-28 14:31:45,251 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-28 14:31:45,251 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 169 transitions. [2020-10-28 14:31:45,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-28 14:31:45,252 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:31:45,252 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 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 14:31:45,252 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-28 14:31:45,252 INFO L429 AbstractCegarLoop]: === Iteration 50 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:31:45,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:31:45,253 INFO L82 PathProgramCache]: Analyzing trace with hash 901589996, now seen corresponding path program 7 times [2020-10-28 14:31:45,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:31:45,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1817412586] [2020-10-28 14:31:45,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:31:45,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:31:45,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:31:45,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:31:45,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:31:45,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:31:45,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:31:47,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:31:47,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-28 14:31:47,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 14:31:47,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2456 [2020-10-28 14:31:47,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:31:47,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:31:47,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 14:31:47,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:31:47,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 14:31:47,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:31:48,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:31:48,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:31:48,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:31:48,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:31:48,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:31:48,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:31:48,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:31:48,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:31:48,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:31:48,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:31:48,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:31:48,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:31:48,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:31:48,082 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:31:48,083 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1817412586] [2020-10-28 14:31:48,083 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:31:48,083 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 14:31:48,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907936083] [2020-10-28 14:31:48,083 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 14:31:48,083 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:31:48,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 14:31:48,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2020-10-28 14:31:48,084 INFO L87 Difference]: Start difference. First operand 140 states and 169 transitions. Second operand 14 states. [2020-10-28 14:31:48,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:31:48,940 INFO L93 Difference]: Finished difference Result 180 states and 217 transitions. [2020-10-28 14:31:48,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 14:31:48,941 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 36 [2020-10-28 14:31:48,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:31:48,942 INFO L225 Difference]: With dead ends: 180 [2020-10-28 14:31:48,942 INFO L226 Difference]: Without dead ends: 172 [2020-10-28 14:31:48,943 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2020-10-28 14:31:48,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-10-28 14:31:48,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 145. [2020-10-28 14:31:48,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-28 14:31:48,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 175 transitions. [2020-10-28 14:31:48,972 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 175 transitions. Word has length 36 [2020-10-28 14:31:48,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:31:48,972 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 175 transitions. [2020-10-28 14:31:48,972 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 14:31:48,972 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 175 transitions. [2020-10-28 14:31:48,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-28 14:31:48,973 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:31:48,973 INFO L422 BasicCegarLoop]: trace histogram [4, 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 14:31:48,973 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-28 14:31:48,973 INFO L429 AbstractCegarLoop]: === Iteration 51 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:31:48,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:31:48,973 INFO L82 PathProgramCache]: Analyzing trace with hash 383651881, now seen corresponding path program 6 times [2020-10-28 14:31:48,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:31:48,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1206261111] [2020-10-28 14:31:48,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:31:49,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:31:49,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:31:49,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:31:50,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:31:50,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-28 14:31:50,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:31:50,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1890 [2020-10-28 14:31:50,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:31:50,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:31:50,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 14:31:50,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:31:50,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 14:31:50,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:31:51,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:31:51,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:31:51,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:31:51,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:31:51,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:31:51,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:31:51,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 14:31:51,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:31:51,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:31:51,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:31:51,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:31:51,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:31:51,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:31:51,477 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:31:51,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1206261111] [2020-10-28 14:31:51,477 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:31:51,477 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-28 14:31:51,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093367025] [2020-10-28 14:31:51,477 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-28 14:31:51,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:31:51,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-28 14:31:51,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2020-10-28 14:31:51,478 INFO L87 Difference]: Start difference. First operand 145 states and 175 transitions. Second operand 15 states. [2020-10-28 14:31:52,923 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 68 [2020-10-28 14:31:53,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:31:53,410 INFO L93 Difference]: Finished difference Result 195 states and 237 transitions. [2020-10-28 14:31:53,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 14:31:53,410 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 36 [2020-10-28 14:31:53,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:31:53,412 INFO L225 Difference]: With dead ends: 195 [2020-10-28 14:31:53,412 INFO L226 Difference]: Without dead ends: 191 [2020-10-28 14:31:53,413 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=99, Invalid=501, Unknown=0, NotChecked=0, Total=600 [2020-10-28 14:31:53,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-10-28 14:31:53,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 150. [2020-10-28 14:31:53,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-10-28 14:31:53,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 183 transitions. [2020-10-28 14:31:53,435 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 183 transitions. Word has length 36 [2020-10-28 14:31:53,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:31:53,435 INFO L481 AbstractCegarLoop]: Abstraction has 150 states and 183 transitions. [2020-10-28 14:31:53,435 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-28 14:31:53,435 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 183 transitions. [2020-10-28 14:31:53,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-28 14:31:53,436 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:31:53,436 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:31:53,436 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-28 14:31:53,436 INFO L429 AbstractCegarLoop]: === Iteration 52 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:31:53,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:31:53,437 INFO L82 PathProgramCache]: Analyzing trace with hash 1394423834, now seen corresponding path program 8 times [2020-10-28 14:31:53,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:31:53,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [804618389] [2020-10-28 14:31:53,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:31:53,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:31:53,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:31:54,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:31:54,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-28 14:31:54,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:31:54,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 650 [2020-10-28 14:31:54,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:31:54,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:31:54,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 14:31:54,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:31:54,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 14:31:54,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:31:54,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:31:54,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:31:54,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:31:54,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:31:54,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:31:54,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:31:54,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 14:31:54,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:31:54,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:31:54,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:31:54,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:31:54,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:31:54,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:31:54,577 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:31:54,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [804618389] [2020-10-28 14:31:54,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:31:54,578 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-28 14:31:54,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274964968] [2020-10-28 14:31:54,578 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-28 14:31:54,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:31:54,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-28 14:31:54,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2020-10-28 14:31:54,578 INFO L87 Difference]: Start difference. First operand 150 states and 183 transitions. Second operand 15 states. [2020-10-28 14:31:56,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:31:56,947 INFO L93 Difference]: Finished difference Result 222 states and 270 transitions. [2020-10-28 14:31:56,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-28 14:31:56,947 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 36 [2020-10-28 14:31:56,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:31:56,949 INFO L225 Difference]: With dead ends: 222 [2020-10-28 14:31:56,950 INFO L226 Difference]: Without dead ends: 218 [2020-10-28 14:31:56,950 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=144, Invalid=1046, Unknown=0, NotChecked=0, Total=1190 [2020-10-28 14:31:56,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-10-28 14:31:56,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 150. [2020-10-28 14:31:56,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-10-28 14:31:56,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 183 transitions. [2020-10-28 14:31:56,974 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 183 transitions. Word has length 36 [2020-10-28 14:31:56,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:31:56,974 INFO L481 AbstractCegarLoop]: Abstraction has 150 states and 183 transitions. [2020-10-28 14:31:56,974 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-28 14:31:56,974 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 183 transitions. [2020-10-28 14:31:56,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-28 14:31:56,975 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:31:56,975 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:31:56,975 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-28 14:31:56,975 INFO L429 AbstractCegarLoop]: === Iteration 53 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:31:56,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:31:56,976 INFO L82 PathProgramCache]: Analyzing trace with hash -331380020, now seen corresponding path program 8 times [2020-10-28 14:31:56,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:31:56,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [446143281] [2020-10-28 14:31:56,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:31:57,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:31:57,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:31:57,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:31:57,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:31:58,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:31:58,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-28 14:31:58,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:31:58,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1976 [2020-10-28 14:31:58,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:31:58,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:31:58,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 14:31:58,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:31:58,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 14:31:58,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:31:59,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:31:59,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:31:59,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:31:59,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:31:59,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:31:59,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:31:59,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:31:59,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:31:59,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:31:59,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:31:59,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:31:59,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:31:59,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:31:59,520 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:31:59,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [446143281] [2020-10-28 14:31:59,521 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:31:59,521 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-28 14:31:59,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576151858] [2020-10-28 14:31:59,521 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-28 14:31:59,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:31:59,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-28 14:31:59,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2020-10-28 14:31:59,522 INFO L87 Difference]: Start difference. First operand 150 states and 183 transitions. Second operand 15 states. [2020-10-28 14:32:00,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:32:00,671 INFO L93 Difference]: Finished difference Result 187 states and 226 transitions. [2020-10-28 14:32:00,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 14:32:00,672 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 36 [2020-10-28 14:32:00,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:32:00,673 INFO L225 Difference]: With dead ends: 187 [2020-10-28 14:32:00,674 INFO L226 Difference]: Without dead ends: 183 [2020-10-28 14:32:00,674 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2020-10-28 14:32:00,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-10-28 14:32:00,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 150. [2020-10-28 14:32:00,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-10-28 14:32:00,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 183 transitions. [2020-10-28 14:32:00,699 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 183 transitions. Word has length 36 [2020-10-28 14:32:00,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:32:00,699 INFO L481 AbstractCegarLoop]: Abstraction has 150 states and 183 transitions. [2020-10-28 14:32:00,699 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-28 14:32:00,699 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 183 transitions. [2020-10-28 14:32:00,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-28 14:32:00,700 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:32:00,700 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 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 14:32:00,700 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-28 14:32:00,700 INFO L429 AbstractCegarLoop]: === Iteration 54 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:32:00,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:32:00,700 INFO L82 PathProgramCache]: Analyzing trace with hash 1980827425, now seen corresponding path program 4 times [2020-10-28 14:32:00,700 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:32:00,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [891534803] [2020-10-28 14:32:00,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:32:00,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:32:00,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:32:01,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:32:01,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-28 14:32:01,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:32:01,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 379 [2020-10-28 14:32:01,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:32:01,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:32:01,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 14:32:01,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:32:01,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 14:32:01,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:32:01,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:32:01,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:32:01,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:32:01,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:32:01,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:32:01,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:32:01,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:32:01,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:32:01,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:32:01,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:32:01,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:32:01,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:32:01,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:32:01,488 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-28 14:32:01,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [891534803] [2020-10-28 14:32:01,488 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:32:01,488 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-28 14:32:01,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298034515] [2020-10-28 14:32:01,489 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 14:32:01,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:32:01,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 14:32:01,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-10-28 14:32:01,489 INFO L87 Difference]: Start difference. First operand 150 states and 183 transitions. Second operand 13 states. [2020-10-28 14:32:02,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:32:02,397 INFO L93 Difference]: Finished difference Result 168 states and 202 transitions. [2020-10-28 14:32:02,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 14:32:02,398 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 37 [2020-10-28 14:32:02,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:32:02,399 INFO L225 Difference]: With dead ends: 168 [2020-10-28 14:32:02,399 INFO L226 Difference]: Without dead ends: 149 [2020-10-28 14:32:02,400 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2020-10-28 14:32:02,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-10-28 14:32:02,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 143. [2020-10-28 14:32:02,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-28 14:32:02,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 175 transitions. [2020-10-28 14:32:02,431 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 175 transitions. Word has length 37 [2020-10-28 14:32:02,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:32:02,431 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 175 transitions. [2020-10-28 14:32:02,431 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 14:32:02,431 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 175 transitions. [2020-10-28 14:32:02,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-28 14:32:02,432 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:32:02,432 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:32:02,432 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-28 14:32:02,432 INFO L429 AbstractCegarLoop]: === Iteration 55 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:32:02,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:32:02,433 INFO L82 PathProgramCache]: Analyzing trace with hash 1287772405, now seen corresponding path program 9 times [2020-10-28 14:32:02,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:32:02,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [391128231] [2020-10-28 14:32:02,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:32:02,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:32:02,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:32:02,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:32:02,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-28 14:32:02,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:32:02,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 325 [2020-10-28 14:32:02,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:32:02,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:32:02,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 14:32:02,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:32:02,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 14:32:02,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:32:03,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:32:03,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:32:03,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:32:03,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:32:03,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:32:03,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:32:03,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:32:03,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:32:03,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:32:03,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:32:03,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:32:03,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:32:03,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:32:03,166 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:32:03,166 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [391128231] [2020-10-28 14:32:03,166 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:32:03,166 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 14:32:03,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916602466] [2020-10-28 14:32:03,167 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 14:32:03,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:32:03,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 14:32:03,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2020-10-28 14:32:03,168 INFO L87 Difference]: Start difference. First operand 143 states and 175 transitions. Second operand 14 states. [2020-10-28 14:32:04,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:32:04,309 INFO L93 Difference]: Finished difference Result 186 states and 225 transitions. [2020-10-28 14:32:04,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 14:32:04,310 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 37 [2020-10-28 14:32:04,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:32:04,312 INFO L225 Difference]: With dead ends: 186 [2020-10-28 14:32:04,312 INFO L226 Difference]: Without dead ends: 170 [2020-10-28 14:32:04,312 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2020-10-28 14:32:04,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-28 14:32:04,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 145. [2020-10-28 14:32:04,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-28 14:32:04,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 176 transitions. [2020-10-28 14:32:04,338 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 176 transitions. Word has length 37 [2020-10-28 14:32:04,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:32:04,338 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 176 transitions. [2020-10-28 14:32:04,339 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 14:32:04,339 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 176 transitions. [2020-10-28 14:32:04,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-28 14:32:04,339 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:32:04,339 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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 14:32:04,340 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-28 14:32:04,340 INFO L429 AbstractCegarLoop]: === Iteration 56 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:32:04,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:32:04,340 INFO L82 PathProgramCache]: Analyzing trace with hash 769834290, now seen corresponding path program 7 times [2020-10-28 14:32:04,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:32:04,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [992406152] [2020-10-28 14:32:04,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:32:04,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:32:04,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:32:04,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:32:06,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:32:06,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-28 14:32:06,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:32:06,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1829 [2020-10-28 14:32:06,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:32:06,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:32:06,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 14:32:06,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:32:06,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 14:32:06,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:32:06,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:32:06,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:32:06,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:32:06,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:32:06,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:32:06,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:32:06,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:32:06,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:32:06,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:32:06,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:32:06,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:32:06,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:32:06,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:32:06,347 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 14:32:06,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [992406152] [2020-10-28 14:32:06,347 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:32:06,347 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 14:32:06,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742562719] [2020-10-28 14:32:06,347 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 14:32:06,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:32:06,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 14:32:06,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-28 14:32:06,348 INFO L87 Difference]: Start difference. First operand 145 states and 176 transitions. Second operand 10 states. [2020-10-28 14:32:07,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:32:07,096 INFO L93 Difference]: Finished difference Result 175 states and 207 transitions. [2020-10-28 14:32:07,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 14:32:07,097 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 37 [2020-10-28 14:32:07,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:32:07,098 INFO L225 Difference]: With dead ends: 175 [2020-10-28 14:32:07,098 INFO L226 Difference]: Without dead ends: 138 [2020-10-28 14:32:07,099 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2020-10-28 14:32:07,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-28 14:32:07,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 134. [2020-10-28 14:32:07,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-28 14:32:07,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 159 transitions. [2020-10-28 14:32:07,133 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 159 transitions. Word has length 37 [2020-10-28 14:32:07,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:32:07,134 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 159 transitions. [2020-10-28 14:32:07,134 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 14:32:07,134 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 159 transitions. [2020-10-28 14:32:07,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-28 14:32:07,135 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:32:07,135 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:32:07,135 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2020-10-28 14:32:07,135 INFO L429 AbstractCegarLoop]: === Iteration 57 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:32:07,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:32:07,136 INFO L82 PathProgramCache]: Analyzing trace with hash 357764816, now seen corresponding path program 9 times [2020-10-28 14:32:07,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:32:07,136 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [649273116] [2020-10-28 14:32:07,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:32:07,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:32:07,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:32:07,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:32:07,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-28 14:32:07,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:32:07,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 542 [2020-10-28 14:32:07,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:32:07,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:32:07,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 14:32:07,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:32:07,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 14:32:07,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:32:08,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:32:08,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:32:08,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:32:08,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:32:08,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:32:08,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:32:08,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:32:08,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:32:08,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:32:08,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:32:08,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:32:08,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:32:08,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:32:08,135 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 4 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:32:08,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [649273116] [2020-10-28 14:32:08,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:32:08,135 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 14:32:08,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692123644] [2020-10-28 14:32:08,136 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 14:32:08,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:32:08,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 14:32:08,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-10-28 14:32:08,136 INFO L87 Difference]: Start difference. First operand 134 states and 159 transitions. Second operand 14 states. [2020-10-28 14:32:10,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:32:10,123 INFO L93 Difference]: Finished difference Result 185 states and 218 transitions. [2020-10-28 14:32:10,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-28 14:32:10,123 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 37 [2020-10-28 14:32:10,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:32:10,125 INFO L225 Difference]: With dead ends: 185 [2020-10-28 14:32:10,125 INFO L226 Difference]: Without dead ends: 161 [2020-10-28 14:32:10,125 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=82, Invalid=674, Unknown=0, NotChecked=0, Total=756 [2020-10-28 14:32:10,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-10-28 14:32:10,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 134. [2020-10-28 14:32:10,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-28 14:32:10,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 158 transitions. [2020-10-28 14:32:10,146 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 158 transitions. Word has length 37 [2020-10-28 14:32:10,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:32:10,146 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 158 transitions. [2020-10-28 14:32:10,146 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 14:32:10,146 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 158 transitions. [2020-10-28 14:32:10,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-28 14:32:10,147 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:32:10,147 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 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] [2020-10-28 14:32:10,147 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2020-10-28 14:32:10,147 INFO L429 AbstractCegarLoop]: === Iteration 58 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:32:10,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:32:10,147 INFO L82 PathProgramCache]: Analyzing trace with hash 1988650718, now seen corresponding path program 1 times [2020-10-28 14:32:10,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:32:10,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1107882995] [2020-10-28 14:32:10,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:32:10,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:32:10,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:32:10,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:32:10,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:32:11,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:32:11,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-28 14:32:11,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:32:11,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1641 [2020-10-28 14:32:11,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:32:11,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:32:11,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 14:32:11,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:32:11,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 14:32:11,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:32:11,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:32:11,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:32:11,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:32:11,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:32:11,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:32:11,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:32:11,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:32:11,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:32:11,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:32:11,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:32:11,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:32:11,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:32:11,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:32:11,974 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-28 14:32:11,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1107882995] [2020-10-28 14:32:11,974 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:32:11,974 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 14:32:11,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381405867] [2020-10-28 14:32:11,974 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 14:32:11,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:32:11,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 14:32:11,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-28 14:32:11,975 INFO L87 Difference]: Start difference. First operand 134 states and 158 transitions. Second operand 10 states. [2020-10-28 14:32:12,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:32:12,463 INFO L93 Difference]: Finished difference Result 172 states and 201 transitions. [2020-10-28 14:32:12,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 14:32:12,464 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 37 [2020-10-28 14:32:12,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:32:12,465 INFO L225 Difference]: With dead ends: 172 [2020-10-28 14:32:12,466 INFO L226 Difference]: Without dead ends: 143 [2020-10-28 14:32:12,466 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2020-10-28 14:32:12,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-10-28 14:32:12,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 125. [2020-10-28 14:32:12,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-10-28 14:32:12,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 144 transitions. [2020-10-28 14:32:12,488 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 144 transitions. Word has length 37 [2020-10-28 14:32:12,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:32:12,488 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 144 transitions. [2020-10-28 14:32:12,488 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 14:32:12,488 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 144 transitions. [2020-10-28 14:32:12,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-28 14:32:12,489 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:32:12,489 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 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 14:32:12,489 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2020-10-28 14:32:12,489 INFO L429 AbstractCegarLoop]: === Iteration 59 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:32:12,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:32:12,489 INFO L82 PathProgramCache]: Analyzing trace with hash 1170678871, now seen corresponding path program 5 times [2020-10-28 14:32:12,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:32:12,489 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [128812713] [2020-10-28 14:32:12,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:32:12,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:32:12,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:32:12,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:32:13,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:32:15,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:32:15,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-28 14:32:15,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:32:15,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3153 [2020-10-28 14:32:15,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:32:15,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:32:15,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 14:32:15,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:32:15,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-28 14:32:15,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:32:16,157 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 45 [2020-10-28 14:32:16,379 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 58 [2020-10-28 14:32:16,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:32:16,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:32:16,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:32:16,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:32:16,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:32:16,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:32:16,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:32:16,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:32:16,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:32:16,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:32:16,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:32:16,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:32:16,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:32:16,637 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:32:16,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [128812713] [2020-10-28 14:32:16,638 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:32:16,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-28 14:32:16,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299186872] [2020-10-28 14:32:16,638 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-28 14:32:16,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:32:16,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-28 14:32:16,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-10-28 14:32:16,639 INFO L87 Difference]: Start difference. First operand 125 states and 144 transitions. Second operand 16 states. [2020-10-28 14:32:17,782 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 61 [2020-10-28 14:32:18,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:32:18,333 INFO L93 Difference]: Finished difference Result 166 states and 194 transitions. [2020-10-28 14:32:18,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 14:32:18,334 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 37 [2020-10-28 14:32:18,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:32:18,335 INFO L225 Difference]: With dead ends: 166 [2020-10-28 14:32:18,335 INFO L226 Difference]: Without dead ends: 162 [2020-10-28 14:32:18,336 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=73, Invalid=433, Unknown=0, NotChecked=0, Total=506 [2020-10-28 14:32:18,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-10-28 14:32:18,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 127. [2020-10-28 14:32:18,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-10-28 14:32:18,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 147 transitions. [2020-10-28 14:32:18,361 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 147 transitions. Word has length 37 [2020-10-28 14:32:18,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:32:18,361 INFO L481 AbstractCegarLoop]: Abstraction has 127 states and 147 transitions. [2020-10-28 14:32:18,361 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-28 14:32:18,361 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 147 transitions. [2020-10-28 14:32:18,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-28 14:32:18,361 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:32:18,362 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 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 14:32:18,362 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2020-10-28 14:32:18,362 INFO L429 AbstractCegarLoop]: === Iteration 60 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:32:18,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:32:18,362 INFO L82 PathProgramCache]: Analyzing trace with hash 946494251, now seen corresponding path program 10 times [2020-10-28 14:32:18,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:32:18,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1261180018] [2020-10-28 14:32:18,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:32:18,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:32:18,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:32:18,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:32:18,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:32:19,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:32:19,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-28 14:32:19,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:32:19,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1492 [2020-10-28 14:32:19,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:32:19,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:32:19,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 14:32:19,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:32:19,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 14:32:19,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:32:20,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:32:20,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:32:20,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:32:20,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:32:20,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:32:20,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:32:20,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:32:20,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:32:20,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:32:20,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:32:20,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:32:20,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:32:20,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:32:20,339 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:32:20,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1261180018] [2020-10-28 14:32:20,339 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:32:20,339 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 14:32:20,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713646326] [2020-10-28 14:32:20,339 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 14:32:20,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:32:20,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 14:32:20,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2020-10-28 14:32:20,340 INFO L87 Difference]: Start difference. First operand 127 states and 147 transitions. Second operand 14 states. [2020-10-28 14:32:21,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:32:21,666 INFO L93 Difference]: Finished difference Result 164 states and 190 transitions. [2020-10-28 14:32:21,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 14:32:21,667 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 37 [2020-10-28 14:32:21,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:32:21,668 INFO L225 Difference]: With dead ends: 164 [2020-10-28 14:32:21,668 INFO L226 Difference]: Without dead ends: 156 [2020-10-28 14:32:21,668 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2020-10-28 14:32:21,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-10-28 14:32:21,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 132. [2020-10-28 14:32:21,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-10-28 14:32:21,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 153 transitions. [2020-10-28 14:32:21,699 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 153 transitions. Word has length 37 [2020-10-28 14:32:21,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:32:21,699 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 153 transitions. [2020-10-28 14:32:21,699 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 14:32:21,699 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 153 transitions. [2020-10-28 14:32:21,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-28 14:32:21,700 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:32:21,700 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 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 14:32:21,700 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2020-10-28 14:32:21,700 INFO L429 AbstractCegarLoop]: === Iteration 61 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:32:21,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:32:21,701 INFO L82 PathProgramCache]: Analyzing trace with hash -273737971, now seen corresponding path program 6 times [2020-10-28 14:32:21,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:32:21,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1018708204] [2020-10-28 14:32:21,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:32:21,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:32:21,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:32:23,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:32:23,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-28 14:32:23,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:32:23,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1269 [2020-10-28 14:32:23,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:32:23,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:32:23,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 14:32:23,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:32:23,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-28 14:32:23,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:32:23,616 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 32 [2020-10-28 14:32:23,743 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 31 [2020-10-28 14:32:24,331 WARN L193 SmtUtils]: Spent 519.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 62 [2020-10-28 14:32:24,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:32:24,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:32:24,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:32:24,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:32:24,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:32:24,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:32:24,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:32:24,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:32:24,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:32:24,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:32:24,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:32:24,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:32:24,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:32:24,524 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:32:24,525 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1018708204] [2020-10-28 14:32:24,525 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:32:24,525 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-28 14:32:24,525 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244794558] [2020-10-28 14:32:24,525 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-28 14:32:24,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:32:24,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-28 14:32:24,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2020-10-28 14:32:24,526 INFO L87 Difference]: Start difference. First operand 132 states and 153 transitions. Second operand 16 states. [2020-10-28 14:32:25,640 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 50 [2020-10-28 14:32:25,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:32:25,993 INFO L93 Difference]: Finished difference Result 169 states and 197 transitions. [2020-10-28 14:32:25,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 14:32:25,993 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 37 [2020-10-28 14:32:25,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:32:25,994 INFO L225 Difference]: With dead ends: 169 [2020-10-28 14:32:25,994 INFO L226 Difference]: Without dead ends: 165 [2020-10-28 14:32:25,995 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=83, Invalid=423, Unknown=0, NotChecked=0, Total=506 [2020-10-28 14:32:25,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-10-28 14:32:26,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 134. [2020-10-28 14:32:26,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-28 14:32:26,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 155 transitions. [2020-10-28 14:32:26,024 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 155 transitions. Word has length 37 [2020-10-28 14:32:26,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:32:26,024 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 155 transitions. [2020-10-28 14:32:26,024 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-28 14:32:26,024 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 155 transitions. [2020-10-28 14:32:26,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-28 14:32:26,025 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:32:26,025 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:32:26,025 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2020-10-28 14:32:26,026 INFO L429 AbstractCegarLoop]: === Iteration 62 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:32:26,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:32:26,026 INFO L82 PathProgramCache]: Analyzing trace with hash -1490580878, now seen corresponding path program 6 times [2020-10-28 14:32:26,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:32:26,026 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [840883059] [2020-10-28 14:32:26,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:32:26,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:32:26,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:32:27,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:32:27,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-28 14:32:27,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:32:27,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1796 [2020-10-28 14:32:27,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:32:27,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:32:27,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 14:32:27,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:32:27,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-28 14:32:27,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:32:28,229 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2020-10-28 14:32:28,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:32:28,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:32:28,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:32:28,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:32:28,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:32:28,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:32:28,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 14:32:28,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:32:28,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:32:28,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:32:28,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:32:28,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:32:28,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:32:28,752 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:32:28,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [840883059] [2020-10-28 14:32:28,752 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:32:28,752 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-28 14:32:28,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121115950] [2020-10-28 14:32:28,752 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-28 14:32:28,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:32:28,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-28 14:32:28,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2020-10-28 14:32:28,753 INFO L87 Difference]: Start difference. First operand 134 states and 155 transitions. Second operand 16 states. [2020-10-28 14:32:30,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:32:30,294 INFO L93 Difference]: Finished difference Result 172 states and 196 transitions. [2020-10-28 14:32:30,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 14:32:30,294 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 37 [2020-10-28 14:32:30,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:32:30,296 INFO L225 Difference]: With dead ends: 172 [2020-10-28 14:32:30,296 INFO L226 Difference]: Without dead ends: 168 [2020-10-28 14:32:30,297 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=83, Invalid=423, Unknown=0, NotChecked=0, Total=506 [2020-10-28 14:32:30,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-10-28 14:32:30,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 126. [2020-10-28 14:32:30,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-10-28 14:32:30,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 146 transitions. [2020-10-28 14:32:30,321 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 146 transitions. Word has length 37 [2020-10-28 14:32:30,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:32:30,321 INFO L481 AbstractCegarLoop]: Abstraction has 126 states and 146 transitions. [2020-10-28 14:32:30,321 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-28 14:32:30,321 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 146 transitions. [2020-10-28 14:32:30,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-28 14:32:30,321 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:32:30,321 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 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 14:32:30,322 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2020-10-28 14:32:30,322 INFO L429 AbstractCegarLoop]: === Iteration 63 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:32:30,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:32:30,322 INFO L82 PathProgramCache]: Analyzing trace with hash -914284673, now seen corresponding path program 2 times [2020-10-28 14:32:30,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:32:30,322 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1371160370] [2020-10-28 14:32:30,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:32:30,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:32:30,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:32:30,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:32:31,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:32:31,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:32:35,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:32:35,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-28 14:32:35,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 14:32:35,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-28 14:32:35,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:32:35,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:32:35,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 14:32:35,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:32:35,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 14:32:35,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:32:36,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:32:36,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:32:36,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:32:36,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:32:36,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:32:36,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:32:36,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:32:36,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:32:36,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:32:36,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:32:36,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:32:36,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:32:36,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:32:36,026 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-28 14:32:36,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1371160370] [2020-10-28 14:32:36,026 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:32:36,026 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 14:32:36,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255696588] [2020-10-28 14:32:36,026 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 14:32:36,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:32:36,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 14:32:36,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2020-10-28 14:32:36,027 INFO L87 Difference]: Start difference. First operand 126 states and 146 transitions. Second operand 14 states. [2020-10-28 14:32:37,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:32:37,208 INFO L93 Difference]: Finished difference Result 154 states and 180 transitions. [2020-10-28 14:32:37,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 14:32:37,209 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 38 [2020-10-28 14:32:37,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:32:37,210 INFO L225 Difference]: With dead ends: 154 [2020-10-28 14:32:37,210 INFO L226 Difference]: Without dead ends: 150 [2020-10-28 14:32:37,210 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=128, Invalid=472, Unknown=0, NotChecked=0, Total=600 [2020-10-28 14:32:37,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-10-28 14:32:37,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 136. [2020-10-28 14:32:37,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-28 14:32:37,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 160 transitions. [2020-10-28 14:32:37,240 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 160 transitions. Word has length 38 [2020-10-28 14:32:37,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:32:37,241 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 160 transitions. [2020-10-28 14:32:37,241 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 14:32:37,241 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 160 transitions. [2020-10-28 14:32:37,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-28 14:32:37,242 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:32:37,242 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:32:37,242 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2020-10-28 14:32:37,242 INFO L429 AbstractCegarLoop]: === Iteration 64 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:32:37,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:32:37,242 INFO L82 PathProgramCache]: Analyzing trace with hash 685658766, now seen corresponding path program 7 times [2020-10-28 14:32:37,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:32:37,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [222180679] [2020-10-28 14:32:37,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:32:37,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:32:37,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:32:38,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:32:38,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-28 14:32:38,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:32:38,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 869 [2020-10-28 14:32:38,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:32:38,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:32:38,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 14:32:38,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:32:38,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-28 14:32:38,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:32:39,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:32:39,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:32:39,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:32:39,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:32:39,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:32:39,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:32:39,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:32:39,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:32:39,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:32:39,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:32:39,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:32:39,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:32:39,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:32:39,020 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:32:39,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [222180679] [2020-10-28 14:32:39,021 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:32:39,021 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-28 14:32:39,021 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802959501] [2020-10-28 14:32:39,021 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-28 14:32:39,021 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:32:39,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-28 14:32:39,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2020-10-28 14:32:39,022 INFO L87 Difference]: Start difference. First operand 136 states and 160 transitions. Second operand 15 states. [2020-10-28 14:32:40,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:32:40,557 INFO L93 Difference]: Finished difference Result 172 states and 200 transitions. [2020-10-28 14:32:40,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 14:32:40,557 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 38 [2020-10-28 14:32:40,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:32:40,559 INFO L225 Difference]: With dead ends: 172 [2020-10-28 14:32:40,559 INFO L226 Difference]: Without dead ends: 164 [2020-10-28 14:32:40,560 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=92, Invalid=508, Unknown=0, NotChecked=0, Total=600 [2020-10-28 14:32:40,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-10-28 14:32:40,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 139. [2020-10-28 14:32:40,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-28 14:32:40,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 164 transitions. [2020-10-28 14:32:40,593 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 164 transitions. Word has length 38 [2020-10-28 14:32:40,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:32:40,593 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 164 transitions. [2020-10-28 14:32:40,593 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-28 14:32:40,593 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 164 transitions. [2020-10-28 14:32:40,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-28 14:32:40,594 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:32:40,594 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 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 14:32:40,594 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2020-10-28 14:32:40,594 INFO L429 AbstractCegarLoop]: === Iteration 65 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:32:40,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:32:40,595 INFO L82 PathProgramCache]: Analyzing trace with hash 297407054, now seen corresponding path program 7 times [2020-10-28 14:32:40,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:32:40,595 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1895063097] [2020-10-28 14:32:40,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:32:40,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:32:40,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:32:41,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:32:41,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-28 14:32:41,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:32:41,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1258 [2020-10-28 14:32:41,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:32:41,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:32:41,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 14:32:41,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:32:41,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 14:32:41,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:32:42,759 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 61 [2020-10-28 14:32:42,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:32:42,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:32:42,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:32:43,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:32:43,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:32:43,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:32:43,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:32:43,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:32:43,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:32:43,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:32:43,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:32:43,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:32:43,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:32:43,017 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:32:43,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1895063097] [2020-10-28 14:32:43,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:32:43,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-28 14:32:43,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217334295] [2020-10-28 14:32:43,017 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-28 14:32:43,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:32:43,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-28 14:32:43,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2020-10-28 14:32:43,018 INFO L87 Difference]: Start difference. First operand 139 states and 164 transitions. Second operand 16 states. [2020-10-28 14:32:43,208 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 52 [2020-10-28 14:32:44,045 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 60 [2020-10-28 14:32:44,388 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 58 [2020-10-28 14:32:44,594 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 68 [2020-10-28 14:32:44,917 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 53 [2020-10-28 14:32:45,333 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 60 [2020-10-28 14:32:45,685 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 83 [2020-10-28 14:32:46,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:32:46,726 INFO L93 Difference]: Finished difference Result 195 states and 228 transitions. [2020-10-28 14:32:46,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-28 14:32:46,726 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 38 [2020-10-28 14:32:46,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:32:46,728 INFO L225 Difference]: With dead ends: 195 [2020-10-28 14:32:46,728 INFO L226 Difference]: Without dead ends: 191 [2020-10-28 14:32:46,728 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=135, Invalid=795, Unknown=0, NotChecked=0, Total=930 [2020-10-28 14:32:46,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-10-28 14:32:46,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 142. [2020-10-28 14:32:46,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-28 14:32:46,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 168 transitions. [2020-10-28 14:32:46,759 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 168 transitions. Word has length 38 [2020-10-28 14:32:46,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:32:46,759 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 168 transitions. [2020-10-28 14:32:46,760 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-28 14:32:46,760 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 168 transitions. [2020-10-28 14:32:46,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-28 14:32:46,760 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:32:46,760 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 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 14:32:46,761 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2020-10-28 14:32:46,761 INFO L429 AbstractCegarLoop]: === Iteration 66 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:32:46,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:32:46,761 INFO L82 PathProgramCache]: Analyzing trace with hash 216831150, now seen corresponding path program 8 times [2020-10-28 14:32:46,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:32:46,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [970621932] [2020-10-28 14:32:46,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:32:46,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:32:46,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:32:47,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:32:50,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:32:50,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-28 14:32:50,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:32:50,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3854 [2020-10-28 14:32:50,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:32:50,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:32:50,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 14:32:50,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:32:50,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 14:32:50,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:32:51,280 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 39 [2020-10-28 14:32:51,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:32:51,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:32:51,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:32:51,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:32:51,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:32:51,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:32:51,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:32:51,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:32:51,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:32:51,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:32:51,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:32:51,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:32:51,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:32:51,620 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:32:51,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [970621932] [2020-10-28 14:32:51,621 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:32:51,621 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-28 14:32:51,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085499902] [2020-10-28 14:32:51,621 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-28 14:32:51,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:32:51,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-28 14:32:51,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2020-10-28 14:32:51,622 INFO L87 Difference]: Start difference. First operand 142 states and 168 transitions. Second operand 16 states. [2020-10-28 14:32:53,164 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 69 [2020-10-28 14:32:53,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:32:53,659 INFO L93 Difference]: Finished difference Result 192 states and 228 transitions. [2020-10-28 14:32:53,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 14:32:53,660 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 38 [2020-10-28 14:32:53,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:32:53,661 INFO L225 Difference]: With dead ends: 192 [2020-10-28 14:32:53,662 INFO L226 Difference]: Without dead ends: 188 [2020-10-28 14:32:53,662 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=103, Invalid=547, Unknown=0, NotChecked=0, Total=650 [2020-10-28 14:32:53,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-10-28 14:32:53,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 147. [2020-10-28 14:32:53,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-28 14:32:53,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 176 transitions. [2020-10-28 14:32:53,693 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 176 transitions. Word has length 38 [2020-10-28 14:32:53,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:32:53,693 INFO L481 AbstractCegarLoop]: Abstraction has 147 states and 176 transitions. [2020-10-28 14:32:53,693 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-28 14:32:53,693 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 176 transitions. [2020-10-28 14:32:53,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-28 14:32:53,694 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:32:53,694 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:32:53,694 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2020-10-28 14:32:53,694 INFO L429 AbstractCegarLoop]: === Iteration 67 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:32:53,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:32:53,695 INFO L82 PathProgramCache]: Analyzing trace with hash 1227603103, now seen corresponding path program 10 times [2020-10-28 14:32:53,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:32:53,695 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1691432511] [2020-10-28 14:32:53,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:32:53,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:32:53,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:32:54,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:32:54,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-28 14:32:54,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:32:54,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 998 [2020-10-28 14:32:54,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:32:54,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:32:54,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 14:32:54,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:32:54,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 14:32:54,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:32:55,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:32:55,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:32:55,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:32:55,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:32:55,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:32:55,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:32:55,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:32:55,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:32:55,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:32:55,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:32:55,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:32:55,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:32:55,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:32:55,407 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:32:55,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1691432511] [2020-10-28 14:32:55,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:32:55,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-28 14:32:55,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327732706] [2020-10-28 14:32:55,408 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-28 14:32:55,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:32:55,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-28 14:32:55,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2020-10-28 14:32:55,409 INFO L87 Difference]: Start difference. First operand 147 states and 176 transitions. Second operand 16 states. [2020-10-28 14:32:58,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:32:58,159 INFO L93 Difference]: Finished difference Result 196 states and 232 transitions. [2020-10-28 14:32:58,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-28 14:32:58,160 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 38 [2020-10-28 14:32:58,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:32:58,161 INFO L225 Difference]: With dead ends: 196 [2020-10-28 14:32:58,161 INFO L226 Difference]: Without dead ends: 192 [2020-10-28 14:32:58,162 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=157, Invalid=1175, Unknown=0, NotChecked=0, Total=1332 [2020-10-28 14:32:58,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-10-28 14:32:58,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 147. [2020-10-28 14:32:58,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-28 14:32:58,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 176 transitions. [2020-10-28 14:32:58,203 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 176 transitions. Word has length 38 [2020-10-28 14:32:58,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:32:58,203 INFO L481 AbstractCegarLoop]: Abstraction has 147 states and 176 transitions. [2020-10-28 14:32:58,204 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-28 14:32:58,204 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 176 transitions. [2020-10-28 14:32:58,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-28 14:32:58,204 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:32:58,204 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 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 14:32:58,205 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2020-10-28 14:32:58,205 INFO L429 AbstractCegarLoop]: === Iteration 68 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:32:58,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:32:58,205 INFO L82 PathProgramCache]: Analyzing trace with hash 1962088538, now seen corresponding path program 11 times [2020-10-28 14:32:58,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:32:58,205 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1482484753] [2020-10-28 14:32:58,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:32:58,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:32:58,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:32:58,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:32:58,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-28 14:32:58,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:32:58,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 355 [2020-10-28 14:32:58,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:32:58,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:32:58,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 14:32:58,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:32:58,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 14:32:58,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:32:58,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:32:58,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:32:58,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:32:58,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:32:58,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:32:58,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:32:58,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:32:58,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:32:58,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:32:58,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:32:58,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:32:58,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:32:58,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:32:59,007 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:32:59,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1482484753] [2020-10-28 14:32:59,007 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:32:59,007 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 14:32:59,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463016976] [2020-10-28 14:32:59,007 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 14:32:59,008 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:32:59,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 14:32:59,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-28 14:32:59,008 INFO L87 Difference]: Start difference. First operand 147 states and 176 transitions. Second operand 14 states. [2020-10-28 14:32:59,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:32:59,840 INFO L93 Difference]: Finished difference Result 160 states and 190 transitions. [2020-10-28 14:32:59,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 14:32:59,841 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 39 [2020-10-28 14:32:59,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:32:59,842 INFO L225 Difference]: With dead ends: 160 [2020-10-28 14:32:59,842 INFO L226 Difference]: Without dead ends: 131 [2020-10-28 14:32:59,842 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2020-10-28 14:32:59,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-10-28 14:32:59,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 130. [2020-10-28 14:32:59,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-28 14:32:59,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 158 transitions. [2020-10-28 14:32:59,875 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 158 transitions. Word has length 39 [2020-10-28 14:32:59,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:32:59,875 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 158 transitions. [2020-10-28 14:32:59,875 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 14:32:59,875 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 158 transitions. [2020-10-28 14:32:59,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-28 14:32:59,876 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:32:59,876 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:32:59,876 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2020-10-28 14:32:59,876 INFO L429 AbstractCegarLoop]: === Iteration 69 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:32:59,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:32:59,876 INFO L82 PathProgramCache]: Analyzing trace with hash -860212516, now seen corresponding path program 8 times [2020-10-28 14:32:59,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:32:59,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [955490640] [2020-10-28 14:32:59,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:32:59,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:32:59,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:00,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:33:00,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-28 14:33:00,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:33:00,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 781 [2020-10-28 14:33:00,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:33:00,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:33:00,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 14:33:00,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:33:00,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 14:33:00,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:33:01,157 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 52 [2020-10-28 14:33:01,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:33:01,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:33:01,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:01,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:33:01,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:33:01,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:33:01,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 14:33:01,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:33:01,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:33:01,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:33:01,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:33:01,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:33:01,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:33:01,399 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:33:01,400 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [955490640] [2020-10-28 14:33:01,400 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:33:01,400 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-28 14:33:01,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959065840] [2020-10-28 14:33:01,400 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-28 14:33:01,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:33:01,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-28 14:33:01,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2020-10-28 14:33:01,401 INFO L87 Difference]: Start difference. First operand 130 states and 158 transitions. Second operand 15 states. [2020-10-28 14:33:02,671 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 69 [2020-10-28 14:33:03,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:33:03,697 INFO L93 Difference]: Finished difference Result 170 states and 204 transitions. [2020-10-28 14:33:03,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-28 14:33:03,697 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 39 [2020-10-28 14:33:03,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:33:03,699 INFO L225 Difference]: With dead ends: 170 [2020-10-28 14:33:03,699 INFO L226 Difference]: Without dead ends: 147 [2020-10-28 14:33:03,699 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=96, Invalid=660, Unknown=0, NotChecked=0, Total=756 [2020-10-28 14:33:03,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-10-28 14:33:03,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 130. [2020-10-28 14:33:03,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-28 14:33:03,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 157 transitions. [2020-10-28 14:33:03,730 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 157 transitions. Word has length 39 [2020-10-28 14:33:03,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:33:03,730 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 157 transitions. [2020-10-28 14:33:03,731 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-28 14:33:03,731 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 157 transitions. [2020-10-28 14:33:03,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-28 14:33:03,731 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:33:03,731 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 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 14:33:03,732 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2020-10-28 14:33:03,732 INFO L429 AbstractCegarLoop]: === Iteration 70 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:33:03,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:33:03,732 INFO L82 PathProgramCache]: Analyzing trace with hash 1104352060, now seen corresponding path program 8 times [2020-10-28 14:33:03,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:33:03,737 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [346328527] [2020-10-28 14:33:03,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:33:03,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:33:03,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:04,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:04,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:07,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:33:07,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-28 14:33:07,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:33:07,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3269 [2020-10-28 14:33:07,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:33:07,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:33:07,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 14:33:07,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:33:07,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 14:33:07,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:33:07,568 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 47 [2020-10-28 14:33:07,858 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 54 [2020-10-28 14:33:08,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:33:08,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:33:08,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:08,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:33:08,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:33:08,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:33:08,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:33:08,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:33:08,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:33:08,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:33:08,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:33:08,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:33:08,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:33:08,120 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:33:08,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [346328527] [2020-10-28 14:33:08,120 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:33:08,120 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-28 14:33:08,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790663615] [2020-10-28 14:33:08,121 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-28 14:33:08,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:33:08,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-28 14:33:08,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2020-10-28 14:33:08,121 INFO L87 Difference]: Start difference. First operand 130 states and 157 transitions. Second operand 16 states. [2020-10-28 14:33:08,941 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 56 [2020-10-28 14:33:09,181 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 52 [2020-10-28 14:33:09,510 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 58 [2020-10-28 14:33:09,810 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 77 [2020-10-28 14:33:10,006 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2020-10-28 14:33:10,257 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2020-10-28 14:33:10,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:33:10,981 INFO L93 Difference]: Finished difference Result 162 states and 194 transitions. [2020-10-28 14:33:10,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-28 14:33:10,982 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 39 [2020-10-28 14:33:10,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:33:10,984 INFO L225 Difference]: With dead ends: 162 [2020-10-28 14:33:10,984 INFO L226 Difference]: Without dead ends: 145 [2020-10-28 14:33:10,984 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=124, Invalid=746, Unknown=0, NotChecked=0, Total=870 [2020-10-28 14:33:10,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-10-28 14:33:11,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 132. [2020-10-28 14:33:11,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-10-28 14:33:11,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 158 transitions. [2020-10-28 14:33:11,013 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 158 transitions. Word has length 39 [2020-10-28 14:33:11,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:33:11,014 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 158 transitions. [2020-10-28 14:33:11,014 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-28 14:33:11,014 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 158 transitions. [2020-10-28 14:33:11,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-28 14:33:11,014 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:33:11,014 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 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 14:33:11,014 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2020-10-28 14:33:11,014 INFO L429 AbstractCegarLoop]: === Iteration 71 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:33:11,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:33:11,015 INFO L82 PathProgramCache]: Analyzing trace with hash 411297040, now seen corresponding path program 12 times [2020-10-28 14:33:11,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:33:11,015 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [420933031] [2020-10-28 14:33:11,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:33:11,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:33:11,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:11,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:11,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:12,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:33:12,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-28 14:33:12,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:33:12,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1737 [2020-10-28 14:33:12,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:33:12,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:33:12,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 14:33:12,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:33:12,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-28 14:33:12,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:33:13,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:33:13,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:33:13,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:13,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:33:13,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:33:13,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:33:13,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:33:13,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:33:13,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:33:13,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:33:13,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:33:13,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:33:13,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:33:13,288 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:33:13,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [420933031] [2020-10-28 14:33:13,289 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:33:13,289 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-28 14:33:13,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415947982] [2020-10-28 14:33:13,289 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-28 14:33:13,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:33:13,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-28 14:33:13,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2020-10-28 14:33:13,290 INFO L87 Difference]: Start difference. First operand 132 states and 158 transitions. Second operand 16 states. [2020-10-28 14:33:14,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:33:14,537 INFO L93 Difference]: Finished difference Result 166 states and 198 transitions. [2020-10-28 14:33:14,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 14:33:14,538 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 39 [2020-10-28 14:33:14,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:33:14,539 INFO L225 Difference]: With dead ends: 166 [2020-10-28 14:33:14,539 INFO L226 Difference]: Without dead ends: 162 [2020-10-28 14:33:14,540 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=63, Invalid=357, Unknown=0, NotChecked=0, Total=420 [2020-10-28 14:33:14,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-10-28 14:33:14,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 132. [2020-10-28 14:33:14,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-10-28 14:33:14,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 158 transitions. [2020-10-28 14:33:14,578 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 158 transitions. Word has length 39 [2020-10-28 14:33:14,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:33:14,578 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 158 transitions. [2020-10-28 14:33:14,578 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-28 14:33:14,578 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 158 transitions. [2020-10-28 14:33:14,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-28 14:33:14,579 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:33:14,579 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:33:14,579 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2020-10-28 14:33:14,579 INFO L429 AbstractCegarLoop]: === Iteration 72 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:33:14,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:33:14,580 INFO L82 PathProgramCache]: Analyzing trace with hash -410250116, now seen corresponding path program 1 times [2020-10-28 14:33:14,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:33:14,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1340795681] [2020-10-28 14:33:14,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:33:14,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:33:14,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:15,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:33:15,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-28 14:33:15,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:33:15,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 809 [2020-10-28 14:33:15,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:33:15,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:33:15,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 14:33:15,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:33:15,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 14:33:15,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:33:16,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:33:16,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:33:16,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:16,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:33:16,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:33:16,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:33:16,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:33:16,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:33:16,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:33:16,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:33:16,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:33:16,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:33:16,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:33:16,031 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-28 14:33:16,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1340795681] [2020-10-28 14:33:16,031 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:33:16,031 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 14:33:16,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494178252] [2020-10-28 14:33:16,032 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 14:33:16,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:33:16,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 14:33:16,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-10-28 14:33:16,032 INFO L87 Difference]: Start difference. First operand 132 states and 158 transitions. Second operand 14 states. [2020-10-28 14:33:17,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:33:17,185 INFO L93 Difference]: Finished difference Result 165 states and 194 transitions. [2020-10-28 14:33:17,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 14:33:17,186 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 39 [2020-10-28 14:33:17,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:33:17,187 INFO L225 Difference]: With dead ends: 165 [2020-10-28 14:33:17,187 INFO L226 Difference]: Without dead ends: 148 [2020-10-28 14:33:17,188 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=86, Invalid=420, Unknown=0, NotChecked=0, Total=506 [2020-10-28 14:33:17,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-10-28 14:33:17,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 130. [2020-10-28 14:33:17,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-28 14:33:17,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 154 transitions. [2020-10-28 14:33:17,226 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 154 transitions. Word has length 39 [2020-10-28 14:33:17,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:33:17,226 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 154 transitions. [2020-10-28 14:33:17,226 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 14:33:17,227 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 154 transitions. [2020-10-28 14:33:17,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-28 14:33:17,227 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:33:17,227 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:33:17,228 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2020-10-28 14:33:17,228 INFO L429 AbstractCegarLoop]: === Iteration 73 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:33:17,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:33:17,228 INFO L82 PathProgramCache]: Analyzing trace with hash -106641075, now seen corresponding path program 9 times [2020-10-28 14:33:17,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:33:17,228 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1813103261] [2020-10-28 14:33:17,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:33:17,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:33:17,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:17,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:18,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:33:18,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-28 14:33:18,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:33:18,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1486 [2020-10-28 14:33:18,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:33:18,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:33:18,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 14:33:18,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:33:18,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 14:33:18,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:33:18,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:33:18,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:33:18,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:18,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:33:18,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:33:18,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:33:18,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 14:33:18,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:33:18,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:33:18,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:33:18,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:33:18,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:33:18,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:33:19,006 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:33:19,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1813103261] [2020-10-28 14:33:19,007 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:33:19,007 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 14:33:19,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979524819] [2020-10-28 14:33:19,007 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 14:33:19,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:33:19,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 14:33:19,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-28 14:33:19,008 INFO L87 Difference]: Start difference. First operand 130 states and 154 transitions. Second operand 12 states. [2020-10-28 14:33:20,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:33:20,294 INFO L93 Difference]: Finished difference Result 168 states and 199 transitions. [2020-10-28 14:33:20,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 14:33:20,295 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 39 [2020-10-28 14:33:20,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:33:20,296 INFO L225 Difference]: With dead ends: 168 [2020-10-28 14:33:20,296 INFO L226 Difference]: Without dead ends: 157 [2020-10-28 14:33:20,297 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2020-10-28 14:33:20,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-10-28 14:33:20,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 133. [2020-10-28 14:33:20,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-10-28 14:33:20,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 159 transitions. [2020-10-28 14:33:20,326 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 159 transitions. Word has length 39 [2020-10-28 14:33:20,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:33:20,326 INFO L481 AbstractCegarLoop]: Abstraction has 133 states and 159 transitions. [2020-10-28 14:33:20,326 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 14:33:20,326 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 159 transitions. [2020-10-28 14:33:20,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-28 14:33:20,327 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:33:20,327 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:33:20,327 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2020-10-28 14:33:20,327 INFO L429 AbstractCegarLoop]: === Iteration 74 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:33:20,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:33:20,327 INFO L82 PathProgramCache]: Analyzing trace with hash -518710549, now seen corresponding path program 11 times [2020-10-28 14:33:20,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:33:20,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [60502715] [2020-10-28 14:33:20,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:33:20,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:33:20,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:21,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:33:21,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-28 14:33:21,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:33:21,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 794 [2020-10-28 14:33:21,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:33:21,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:33:21,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 14:33:21,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:33:21,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-28 14:33:21,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:33:21,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:33:21,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:33:21,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:21,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:33:21,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:33:21,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:33:21,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:33:21,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:33:21,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:33:21,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:33:21,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:33:21,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:33:21,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:33:21,783 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:33:21,783 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [60502715] [2020-10-28 14:33:21,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:33:21,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-28 14:33:21,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89396530] [2020-10-28 14:33:21,784 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-28 14:33:21,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:33:21,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-28 14:33:21,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2020-10-28 14:33:21,785 INFO L87 Difference]: Start difference. First operand 133 states and 159 transitions. Second operand 16 states. [2020-10-28 14:33:24,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:33:24,234 INFO L93 Difference]: Finished difference Result 185 states and 221 transitions. [2020-10-28 14:33:24,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-28 14:33:24,235 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 39 [2020-10-28 14:33:24,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:33:24,236 INFO L225 Difference]: With dead ends: 185 [2020-10-28 14:33:24,236 INFO L226 Difference]: Without dead ends: 181 [2020-10-28 14:33:24,237 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=101, Invalid=955, Unknown=0, NotChecked=0, Total=1056 [2020-10-28 14:33:24,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-10-28 14:33:24,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 140. [2020-10-28 14:33:24,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-28 14:33:24,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 166 transitions. [2020-10-28 14:33:24,281 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 166 transitions. Word has length 39 [2020-10-28 14:33:24,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:33:24,281 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 166 transitions. [2020-10-28 14:33:24,281 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-28 14:33:24,281 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 166 transitions. [2020-10-28 14:33:24,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-28 14:33:24,282 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:33:24,282 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 2, 2, 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 14:33:24,282 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2020-10-28 14:33:24,282 INFO L429 AbstractCegarLoop]: === Iteration 75 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:33:24,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:33:24,283 INFO L82 PathProgramCache]: Analyzing trace with hash 294203506, now seen corresponding path program 9 times [2020-10-28 14:33:24,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:33:24,283 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2117266635] [2020-10-28 14:33:24,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:33:24,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:33:24,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:24,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:25,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:28,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:33:28,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-28 14:33:28,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:33:28,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4204 [2020-10-28 14:33:28,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:33:28,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:33:28,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 14:33:28,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:33:28,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-28 14:33:28,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:33:28,911 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 52 [2020-10-28 14:33:29,191 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 57 [2020-10-28 14:33:29,438 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 48 [2020-10-28 14:33:29,644 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 59 [2020-10-28 14:33:29,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:33:29,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:33:29,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:29,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:33:29,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:33:29,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:33:29,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:33:29,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:33:29,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:33:29,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:33:29,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:33:29,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:33:29,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:33:29,929 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:33:29,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2117266635] [2020-10-28 14:33:29,929 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:33:29,930 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-28 14:33:29,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138865343] [2020-10-28 14:33:29,930 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-28 14:33:29,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:33:29,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-28 14:33:29,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2020-10-28 14:33:29,930 INFO L87 Difference]: Start difference. First operand 140 states and 166 transitions. Second operand 17 states. [2020-10-28 14:33:30,280 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 54 [2020-10-28 14:33:30,868 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 55 [2020-10-28 14:33:31,279 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 64 [2020-10-28 14:33:31,434 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 59 [2020-10-28 14:33:31,758 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2020-10-28 14:33:32,016 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 58 [2020-10-28 14:33:32,170 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 53 [2020-10-28 14:33:32,467 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 62 [2020-10-28 14:33:32,884 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 82 [2020-10-28 14:33:33,127 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 50 [2020-10-28 14:33:33,730 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 53 [2020-10-28 14:33:33,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:33:33,833 INFO L93 Difference]: Finished difference Result 189 states and 225 transitions. [2020-10-28 14:33:33,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-28 14:33:33,833 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 39 [2020-10-28 14:33:33,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:33:33,834 INFO L225 Difference]: With dead ends: 189 [2020-10-28 14:33:33,834 INFO L226 Difference]: Without dead ends: 185 [2020-10-28 14:33:33,835 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=129, Invalid=801, Unknown=0, NotChecked=0, Total=930 [2020-10-28 14:33:33,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-10-28 14:33:33,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 150. [2020-10-28 14:33:33,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-10-28 14:33:33,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 178 transitions. [2020-10-28 14:33:33,872 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 178 transitions. Word has length 39 [2020-10-28 14:33:33,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:33:33,873 INFO L481 AbstractCegarLoop]: Abstraction has 150 states and 178 transitions. [2020-10-28 14:33:33,873 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-28 14:33:33,873 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 178 transitions. [2020-10-28 14:33:33,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-28 14:33:33,873 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:33:33,874 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 2, 2, 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 14:33:33,874 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2020-10-28 14:33:33,874 INFO L429 AbstractCegarLoop]: === Iteration 76 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:33:33,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:33:33,874 INFO L82 PathProgramCache]: Analyzing trace with hash 70018886, now seen corresponding path program 13 times [2020-10-28 14:33:33,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:33:33,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [86690927] [2020-10-28 14:33:33,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:33:33,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:33:33,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:34,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:34,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:33:36,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:33:36,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-28 14:33:36,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:33:36,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2645 [2020-10-28 14:33:36,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:33:36,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:33:36,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 14:33:36,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:33:36,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 14:33:36,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0