/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/forester-heap/dll-reverse.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 09:10:06,561 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 09:10:06,568 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 09:10:06,626 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 09:10:06,627 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 09:10:06,633 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 09:10:06,636 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 09:10:06,641 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 09:10:06,644 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 09:10:06,650 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 09:10:06,652 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 09:10:06,653 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 09:10:06,654 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 09:10:06,657 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 09:10:06,661 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 09:10:06,664 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 09:10:06,666 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 09:10:06,669 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 09:10:06,677 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 09:10:06,686 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 09:10:06,689 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 09:10:06,691 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 09:10:06,692 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 09:10:06,695 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 09:10:06,712 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 09:10:06,713 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 09:10:06,713 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 09:10:06,716 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 09:10:06,717 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 09:10:06,718 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 09:10:06,718 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 09:10:06,719 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 09:10:06,721 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 09:10:06,722 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 09:10:06,723 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 09:10:06,723 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 09:10:06,724 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 09:10:06,724 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 09:10:06,724 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 09:10:06,725 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 09:10:06,726 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 09:10:06,734 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 09:10:06,769 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 09:10:06,769 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 09:10:06,770 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 09:10:06,771 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 09:10:06,771 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 09:10:06,771 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 09:10:06,771 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 09:10:06,772 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 09:10:06,772 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 09:10:06,772 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 09:10:06,772 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 09:10:06,772 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 09:10:06,773 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 09:10:06,773 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 09:10:06,773 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 09:10:06,773 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 09:10:06,773 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 09:10:06,774 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 09:10:06,774 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 09:10:06,774 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 09:10:06,774 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 09:10:06,774 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:10:06,775 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 09:10:06,775 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 09:10:06,775 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 09:10:06,775 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 09:10:06,775 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 09:10:06,776 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 09:10:06,776 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 09:10:06,776 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 09:10:07,150 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 09:10:07,192 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 09:10:07,195 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 09:10:07,196 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 09:10:07,196 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 09:10:07,197 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-reverse.i [2020-10-29 09:10:07,269 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f3c123398/24414176cff945fd9e347ba4a9e1c867/FLAG98c16ed3d [2020-10-29 09:10:08,034 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 09:10:08,035 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/dll-reverse.i [2020-10-29 09:10:08,057 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f3c123398/24414176cff945fd9e347ba4a9e1c867/FLAG98c16ed3d [2020-10-29 09:10:08,196 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f3c123398/24414176cff945fd9e347ba4a9e1c867 [2020-10-29 09:10:08,200 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 09:10:08,209 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 09:10:08,213 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 09:10:08,213 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 09:10:08,218 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 09:10:08,219 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:10:08" (1/1) ... [2020-10-29 09:10:08,233 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34f3558b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:10:08, skipping insertion in model container [2020-10-29 09:10:08,233 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:10:08" (1/1) ... [2020-10-29 09:10:08,244 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 09:10:08,311 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 09:10:08,713 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:10:08,729 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 09:10:08,822 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:10:08,885 INFO L208 MainTranslator]: Completed translation [2020-10-29 09:10:08,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:10:08 WrapperNode [2020-10-29 09:10:08,886 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 09:10:08,887 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 09:10:08,888 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 09:10:08,888 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 09:10:08,902 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:10:08" (1/1) ... [2020-10-29 09:10:08,902 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:10:08" (1/1) ... [2020-10-29 09:10:08,918 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:10:08" (1/1) ... [2020-10-29 09:10:08,919 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:10:08" (1/1) ... [2020-10-29 09:10:08,938 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:10:08" (1/1) ... [2020-10-29 09:10:08,944 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:10:08" (1/1) ... [2020-10-29 09:10:08,949 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:10:08" (1/1) ... [2020-10-29 09:10:08,955 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 09:10:08,957 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 09:10:08,957 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 09:10:08,957 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 09:10:08,958 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:10:08" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:10:09,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 09:10:09,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 09:10:09,070 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 09:10:09,070 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 09:10:09,071 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-29 09:10:09,071 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-29 09:10:09,071 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-29 09:10:09,071 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-29 09:10:09,071 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-29 09:10:09,082 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-29 09:10:09,082 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-29 09:10:09,082 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-29 09:10:09,082 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-29 09:10:09,082 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-29 09:10:09,083 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-29 09:10:09,083 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-29 09:10:09,083 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-29 09:10:09,083 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-29 09:10:09,083 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-29 09:10:09,083 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-29 09:10:09,084 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-29 09:10:09,084 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-29 09:10:09,084 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-29 09:10:09,084 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-29 09:10:09,084 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-29 09:10:09,084 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-29 09:10:09,084 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-29 09:10:09,085 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-29 09:10:09,085 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-29 09:10:09,085 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-29 09:10:09,085 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-29 09:10:09,085 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-29 09:10:09,085 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-29 09:10:09,086 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-29 09:10:09,086 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-29 09:10:09,086 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-29 09:10:09,086 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-29 09:10:09,086 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-29 09:10:09,086 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-29 09:10:09,087 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-29 09:10:09,087 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-29 09:10:09,087 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-29 09:10:09,087 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-29 09:10:09,087 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-29 09:10:09,087 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-29 09:10:09,087 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-29 09:10:09,088 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-29 09:10:09,088 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-29 09:10:09,088 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-29 09:10:09,088 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-29 09:10:09,088 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-29 09:10:09,088 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-29 09:10:09,088 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-29 09:10:09,089 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-29 09:10:09,089 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-29 09:10:09,089 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-29 09:10:09,089 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-29 09:10:09,089 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-29 09:10:09,089 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-29 09:10:09,089 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-29 09:10:09,089 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-29 09:10:09,090 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-29 09:10:09,090 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-29 09:10:09,090 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 09:10:09,090 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-29 09:10:09,090 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-29 09:10:09,091 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-29 09:10:09,091 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 09:10:09,091 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-29 09:10:09,091 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-29 09:10:09,091 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-29 09:10:09,091 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-29 09:10:09,092 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-29 09:10:09,092 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-29 09:10:09,092 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-29 09:10:09,092 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-29 09:10:09,092 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-29 09:10:09,092 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-29 09:10:09,092 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-29 09:10:09,093 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-29 09:10:09,093 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-29 09:10:09,093 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-29 09:10:09,093 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-29 09:10:09,093 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-29 09:10:09,093 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-29 09:10:09,093 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-29 09:10:09,094 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-29 09:10:09,094 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-29 09:10:09,094 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-29 09:10:09,094 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-29 09:10:09,094 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-29 09:10:09,094 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-29 09:10:09,094 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-29 09:10:09,095 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-29 09:10:09,095 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-29 09:10:09,095 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-29 09:10:09,095 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-29 09:10:09,095 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-29 09:10:09,095 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-29 09:10:09,095 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-29 09:10:09,096 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-29 09:10:09,096 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-29 09:10:09,096 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-29 09:10:09,096 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-29 09:10:09,096 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-29 09:10:09,096 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-29 09:10:09,096 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-29 09:10:09,097 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 09:10:09,097 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 09:10:09,097 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-29 09:10:09,097 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-29 09:10:09,097 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 09:10:09,097 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 09:10:09,097 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 09:10:09,098 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-29 09:10:09,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-29 09:10:09,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 09:10:09,098 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-29 09:10:09,098 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 09:10:09,098 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 09:10:09,098 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 09:10:09,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 09:10:09,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 09:10:09,756 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 09:10:09,756 INFO L298 CfgBuilder]: Removed 11 assume(true) statements. [2020-10-29 09:10:09,758 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:10:09 BoogieIcfgContainer [2020-10-29 09:10:09,758 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 09:10:09,760 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 09:10:09,761 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 09:10:09,764 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 09:10:09,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 09:10:08" (1/3) ... [2020-10-29 09:10:09,765 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fccbd50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:10:09, skipping insertion in model container [2020-10-29 09:10:09,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:10:08" (2/3) ... [2020-10-29 09:10:09,766 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fccbd50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:10:09, skipping insertion in model container [2020-10-29 09:10:09,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:10:09" (3/3) ... [2020-10-29 09:10:09,768 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-reverse.i [2020-10-29 09:10:09,783 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 09:10:09,788 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 09:10:09,802 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 09:10:09,833 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 09:10:09,833 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 09:10:09,833 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 09:10:09,833 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 09:10:09,833 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 09:10:09,834 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 09:10:09,834 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 09:10:09,834 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 09:10:09,851 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2020-10-29 09:10:09,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-29 09:10:09,857 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:10:09,858 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:10:09,858 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:10:09,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:10:09,865 INFO L82 PathProgramCache]: Analyzing trace with hash 345412413, now seen corresponding path program 1 times [2020-10-29 09:10:09,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:10:09,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1699199402] [2020-10-29 09:10:09,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:10:10,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:10,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:10,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:10,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:10,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:10,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-29 09:10:10,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:10:10,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 429 [2020-10-29 09:10:10,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:10,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:10,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 09:10:10,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:10:10,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 09:10:10,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 09:10:10,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:10:10,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:10,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:10,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:10,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:10:10,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:10:10,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 09:10:10,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:10,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:10,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:10:10,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:10:10,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:10:10,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:10:10,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:10:10,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1699199402] [2020-10-29 09:10:10,605 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:10:10,606 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 09:10:10,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504632446] [2020-10-29 09:10:10,612 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 09:10:10,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:10:10,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 09:10:10,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 09:10:10,640 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 5 states. [2020-10-29 09:10:10,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:10:10,983 INFO L93 Difference]: Finished difference Result 93 states and 154 transitions. [2020-10-29 09:10:10,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 09:10:10,987 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-29 09:10:10,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:10:10,998 INFO L225 Difference]: With dead ends: 93 [2020-10-29 09:10:10,998 INFO L226 Difference]: Without dead ends: 47 [2020-10-29 09:10:11,002 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 09:10:11,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-29 09:10:11,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 41. [2020-10-29 09:10:11,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-29 09:10:11,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 52 transitions. [2020-10-29 09:10:11,044 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 52 transitions. Word has length 13 [2020-10-29 09:10:11,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:10:11,045 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 52 transitions. [2020-10-29 09:10:11,045 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 09:10:11,045 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 52 transitions. [2020-10-29 09:10:11,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-29 09:10:11,046 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:10:11,047 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] [2020-10-29 09:10:11,047 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 09:10:11,047 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:10:11,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:10:11,048 INFO L82 PathProgramCache]: Analyzing trace with hash -693165697, now seen corresponding path program 1 times [2020-10-29 09:10:11,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:10:11,049 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1027311414] [2020-10-29 09:10:11,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:10:11,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:11,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:11,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:11,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:11,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 09:10:11,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:10:11,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 290 [2020-10-29 09:10:11,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:11,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:11,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:10:11,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 09:10:11,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:10:11,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:10:11,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:10:11,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:11,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:11,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:11,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:10:11,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:10:11,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:10:11,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:11,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:11,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:10:11,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:10:11,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:10:11,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:10:11,460 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:10:11,460 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1027311414] [2020-10-29 09:10:11,460 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:10:11,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 09:10:11,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707300570] [2020-10-29 09:10:11,463 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 09:10:11,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:10:11,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 09:10:11,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 09:10:11,464 INFO L87 Difference]: Start difference. First operand 41 states and 52 transitions. Second operand 6 states. [2020-10-29 09:10:11,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:10:11,754 INFO L93 Difference]: Finished difference Result 52 states and 66 transitions. [2020-10-29 09:10:11,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 09:10:11,756 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-10-29 09:10:11,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:10:11,761 INFO L225 Difference]: With dead ends: 52 [2020-10-29 09:10:11,761 INFO L226 Difference]: Without dead ends: 47 [2020-10-29 09:10:11,764 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-29 09:10:11,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-29 09:10:11,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 34. [2020-10-29 09:10:11,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-29 09:10:11,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 41 transitions. [2020-10-29 09:10:11,778 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 41 transitions. Word has length 22 [2020-10-29 09:10:11,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:10:11,782 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 41 transitions. [2020-10-29 09:10:11,782 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 09:10:11,782 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions. [2020-10-29 09:10:11,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-29 09:10:11,785 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:10:11,786 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:10:11,786 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 09:10:11,786 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:10:11,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:10:11,787 INFO L82 PathProgramCache]: Analyzing trace with hash -1228587689, now seen corresponding path program 1 times [2020-10-29 09:10:11,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:10:11,787 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1479922861] [2020-10-29 09:10:11,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:10:11,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:11,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:11,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:12,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:12,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:12,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:14,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:14,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-29 09:10:14,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 09:10:14,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2978 [2020-10-29 09:10:14,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:14,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:14,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:10:14,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:10:14,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 09:10:14,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:10:14,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:10:14,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:14,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:14,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:14,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:10:14,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:10:14,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:10:14,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:14,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:14,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:10:14,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:10:14,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:10:14,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:10:14,929 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:10:14,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1479922861] [2020-10-29 09:10:14,929 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:10:14,930 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 09:10:14,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102839402] [2020-10-29 09:10:14,930 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 09:10:14,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:10:14,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 09:10:14,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-29 09:10:14,932 INFO L87 Difference]: Start difference. First operand 34 states and 41 transitions. Second operand 8 states. [2020-10-29 09:10:15,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:10:15,373 INFO L93 Difference]: Finished difference Result 95 states and 117 transitions. [2020-10-29 09:10:15,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 09:10:15,374 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2020-10-29 09:10:15,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:10:15,375 INFO L225 Difference]: With dead ends: 95 [2020-10-29 09:10:15,376 INFO L226 Difference]: Without dead ends: 83 [2020-10-29 09:10:15,376 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-10-29 09:10:15,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-29 09:10:15,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 43. [2020-10-29 09:10:15,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-29 09:10:15,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 53 transitions. [2020-10-29 09:10:15,386 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 53 transitions. Word has length 26 [2020-10-29 09:10:15,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:10:15,387 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 53 transitions. [2020-10-29 09:10:15,387 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 09:10:15,387 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 53 transitions. [2020-10-29 09:10:15,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-29 09:10:15,388 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:10:15,388 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:10:15,388 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 09:10:15,389 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:10:15,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:10:15,389 INFO L82 PathProgramCache]: Analyzing trace with hash -527523111, now seen corresponding path program 1 times [2020-10-29 09:10:15,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:10:15,390 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1469145239] [2020-10-29 09:10:15,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:10:15,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:15,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:15,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:15,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:15,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:16,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:16,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-29 09:10:16,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 09:10:16,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 872 [2020-10-29 09:10:16,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:16,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:16,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:10:16,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:10:16,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 09:10:16,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:10:16,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:10:16,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:16,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:16,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:16,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:10:16,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:10:16,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 09:10:16,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:16,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:16,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:10:16,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:10:16,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:10:16,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:10:16,404 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 09:10:16,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1469145239] [2020-10-29 09:10:16,404 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:10:16,405 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 09:10:16,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846010688] [2020-10-29 09:10:16,407 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 09:10:16,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:10:16,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 09:10:16,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 09:10:16,408 INFO L87 Difference]: Start difference. First operand 43 states and 53 transitions. Second operand 6 states. [2020-10-29 09:10:16,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:10:16,704 INFO L93 Difference]: Finished difference Result 81 states and 100 transitions. [2020-10-29 09:10:16,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 09:10:16,705 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-10-29 09:10:16,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:10:16,706 INFO L225 Difference]: With dead ends: 81 [2020-10-29 09:10:16,706 INFO L226 Difference]: Without dead ends: 66 [2020-10-29 09:10:16,707 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 [2020-10-29 09:10:16,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-29 09:10:16,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 53. [2020-10-29 09:10:16,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-29 09:10:16,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 66 transitions. [2020-10-29 09:10:16,716 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 66 transitions. Word has length 26 [2020-10-29 09:10:16,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:10:16,716 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 66 transitions. [2020-10-29 09:10:16,716 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 09:10:16,716 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 66 transitions. [2020-10-29 09:10:16,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-29 09:10:16,717 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:10:16,718 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, 1] [2020-10-29 09:10:16,718 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 09:10:16,718 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:10:16,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:10:16,719 INFO L82 PathProgramCache]: Analyzing trace with hash -110469670, now seen corresponding path program 2 times [2020-10-29 09:10:16,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:10:16,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1739096596] [2020-10-29 09:10:16,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:10:16,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:16,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:16,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:16,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:17,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:17,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 09:10:17,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:10:17,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1191 [2020-10-29 09:10:17,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:17,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:17,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 09:10:17,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:10:17,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 09:10:17,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:10:18,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:10:18,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:18,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:18,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:18,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:10:18,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:10:18,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:10:18,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:18,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:18,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:10:18,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:10:18,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:10:18,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:10:18,254 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:10:18,254 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1739096596] [2020-10-29 09:10:18,255 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:10:18,255 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 09:10:18,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578404233] [2020-10-29 09:10:18,255 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 09:10:18,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:10:18,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 09:10:18,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-29 09:10:18,257 INFO L87 Difference]: Start difference. First operand 53 states and 66 transitions. Second operand 12 states. [2020-10-29 09:10:18,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:10:18,875 INFO L93 Difference]: Finished difference Result 87 states and 108 transitions. [2020-10-29 09:10:18,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 09:10:18,877 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2020-10-29 09:10:18,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:10:18,878 INFO L225 Difference]: With dead ends: 87 [2020-10-29 09:10:18,878 INFO L226 Difference]: Without dead ends: 83 [2020-10-29 09:10:18,879 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2020-10-29 09:10:18,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-29 09:10:18,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 59. [2020-10-29 09:10:18,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-29 09:10:18,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 74 transitions. [2020-10-29 09:10:18,900 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 74 transitions. Word has length 27 [2020-10-29 09:10:18,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:10:18,900 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 74 transitions. [2020-10-29 09:10:18,900 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 09:10:18,901 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 74 transitions. [2020-10-29 09:10:18,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-29 09:10:18,902 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:10:18,902 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, 1] [2020-10-29 09:10:18,904 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 09:10:18,904 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:10:18,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:10:18,904 INFO L82 PathProgramCache]: Analyzing trace with hash -108622628, now seen corresponding path program 1 times [2020-10-29 09:10:18,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:10:18,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1878585137] [2020-10-29 09:10:18,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:10:18,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:18,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:18,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:19,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:19,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:20,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:20,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 09:10:20,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 09:10:20,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1295 [2020-10-29 09:10:20,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:20,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:20,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 09:10:20,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:10:20,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 09:10:20,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:10:20,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:10:20,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:20,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:20,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:20,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:10:20,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:10:20,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:10:20,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:20,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:20,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:10:20,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:10:20,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:10:20,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:10:20,512 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:10:20,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1878585137] [2020-10-29 09:10:20,514 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:10:20,514 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 09:10:20,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333286437] [2020-10-29 09:10:20,515 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 09:10:20,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:10:20,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 09:10:20,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-29 09:10:20,519 INFO L87 Difference]: Start difference. First operand 59 states and 74 transitions. Second operand 11 states. [2020-10-29 09:10:21,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:10:21,179 INFO L93 Difference]: Finished difference Result 99 states and 124 transitions. [2020-10-29 09:10:21,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 09:10:21,180 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-10-29 09:10:21,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:10:21,181 INFO L225 Difference]: With dead ends: 99 [2020-10-29 09:10:21,181 INFO L226 Difference]: Without dead ends: 88 [2020-10-29 09:10:21,182 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2020-10-29 09:10:21,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-29 09:10:21,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 59. [2020-10-29 09:10:21,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-29 09:10:21,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 73 transitions. [2020-10-29 09:10:21,206 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 73 transitions. Word has length 27 [2020-10-29 09:10:21,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:10:21,206 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 73 transitions. [2020-10-29 09:10:21,206 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 09:10:21,206 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 73 transitions. [2020-10-29 09:10:21,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-29 09:10:21,208 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:10:21,208 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:10:21,208 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 09:10:21,209 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:10:21,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:10:21,210 INFO L82 PathProgramCache]: Analyzing trace with hash 191450551, now seen corresponding path program 3 times [2020-10-29 09:10:21,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:10:21,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [7852750] [2020-10-29 09:10:21,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:10:21,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:21,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:21,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:21,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:22,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:22,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-29 09:10:22,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:10:22,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 861 [2020-10-29 09:10:22,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:22,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:22,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:10:22,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:10:22,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 09:10:22,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:10:22,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:10:22,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:22,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:22,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:22,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:10:22,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:10:22,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:10:22,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:22,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:22,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:10:22,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:10:22,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:10:22,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:10:22,282 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:10:22,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [7852750] [2020-10-29 09:10:22,283 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:10:22,283 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 09:10:22,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588458461] [2020-10-29 09:10:22,284 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 09:10:22,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:10:22,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 09:10:22,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-29 09:10:22,286 INFO L87 Difference]: Start difference. First operand 59 states and 73 transitions. Second operand 9 states. [2020-10-29 09:10:23,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:10:23,144 INFO L93 Difference]: Finished difference Result 130 states and 163 transitions. [2020-10-29 09:10:23,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 09:10:23,144 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2020-10-29 09:10:23,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:10:23,145 INFO L225 Difference]: With dead ends: 130 [2020-10-29 09:10:23,145 INFO L226 Difference]: Without dead ends: 89 [2020-10-29 09:10:23,146 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2020-10-29 09:10:23,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-10-29 09:10:23,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 79. [2020-10-29 09:10:23,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-29 09:10:23,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 97 transitions. [2020-10-29 09:10:23,158 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 97 transitions. Word has length 28 [2020-10-29 09:10:23,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:10:23,158 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 97 transitions. [2020-10-29 09:10:23,158 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 09:10:23,158 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 97 transitions. [2020-10-29 09:10:23,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-29 09:10:23,159 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:10:23,160 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, 1, 1] [2020-10-29 09:10:23,160 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 09:10:23,160 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:10:23,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:10:23,161 INFO L82 PathProgramCache]: Analyzing trace with hash 1039727646, now seen corresponding path program 1 times [2020-10-29 09:10:23,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:10:23,161 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1046752947] [2020-10-29 09:10:23,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:10:23,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:23,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:23,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:23,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:24,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:24,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:24,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:24,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-29 09:10:24,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 09:10:24,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1813 [2020-10-29 09:10:24,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:24,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:24,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 09:10:24,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:10:24,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 09:10:24,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:10:25,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:10:25,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:25,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:25,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:25,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:10:25,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:10:25,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:10:25,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:25,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:25,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:10:25,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:10:25,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:10:25,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:10:25,195 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:10:25,195 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1046752947] [2020-10-29 09:10:25,196 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:10:25,196 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 09:10:25,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052261291] [2020-10-29 09:10:25,196 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 09:10:25,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:10:25,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 09:10:25,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-29 09:10:25,198 INFO L87 Difference]: Start difference. First operand 79 states and 97 transitions. Second operand 10 states. [2020-10-29 09:10:26,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:10:26,038 INFO L93 Difference]: Finished difference Result 113 states and 135 transitions. [2020-10-29 09:10:26,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 09:10:26,039 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 28 [2020-10-29 09:10:26,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:10:26,040 INFO L225 Difference]: With dead ends: 113 [2020-10-29 09:10:26,040 INFO L226 Difference]: Without dead ends: 93 [2020-10-29 09:10:26,041 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2020-10-29 09:10:26,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-29 09:10:26,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 81. [2020-10-29 09:10:26,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-29 09:10:26,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 97 transitions. [2020-10-29 09:10:26,053 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 97 transitions. Word has length 28 [2020-10-29 09:10:26,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:10:26,053 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 97 transitions. [2020-10-29 09:10:26,053 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 09:10:26,053 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 97 transitions. [2020-10-29 09:10:26,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-29 09:10:26,054 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:10:26,055 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:10:26,055 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 09:10:26,055 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:10:26,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:10:26,056 INFO L82 PathProgramCache]: Analyzing trace with hash 1487828979, now seen corresponding path program 2 times [2020-10-29 09:10:26,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:10:26,056 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [644960046] [2020-10-29 09:10:26,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:10:26,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:26,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:26,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:26,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-29 09:10:26,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:10:26,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 441 [2020-10-29 09:10:26,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:26,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:26,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 09:10:26,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:10:26,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 09:10:26,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:10:26,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:10:26,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:26,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:26,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:26,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:10:26,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:10:26,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:10:26,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:26,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:26,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:10:26,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:10:26,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:10:26,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:10:26,904 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:10:26,904 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [644960046] [2020-10-29 09:10:26,904 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:10:26,905 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 09:10:26,906 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271188662] [2020-10-29 09:10:26,906 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 09:10:26,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:10:26,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 09:10:26,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2020-10-29 09:10:26,912 INFO L87 Difference]: Start difference. First operand 81 states and 97 transitions. Second operand 13 states. [2020-10-29 09:10:27,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:10:27,495 INFO L93 Difference]: Finished difference Result 122 states and 146 transitions. [2020-10-29 09:10:27,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 09:10:27,496 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 29 [2020-10-29 09:10:27,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:10:27,497 INFO L225 Difference]: With dead ends: 122 [2020-10-29 09:10:27,497 INFO L226 Difference]: Without dead ends: 118 [2020-10-29 09:10:27,498 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2020-10-29 09:10:27,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-29 09:10:27,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 86. [2020-10-29 09:10:27,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-29 09:10:27,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 104 transitions. [2020-10-29 09:10:27,525 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 104 transitions. Word has length 29 [2020-10-29 09:10:27,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:10:27,526 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 104 transitions. [2020-10-29 09:10:27,526 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 09:10:27,526 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 104 transitions. [2020-10-29 09:10:27,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-29 09:10:27,532 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:10:27,532 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:10:27,533 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 09:10:27,533 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:10:27,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:10:27,533 INFO L82 PathProgramCache]: Analyzing trace with hash 1489676021, now seen corresponding path program 1 times [2020-10-29 09:10:27,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:10:27,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [957336505] [2020-10-29 09:10:27,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:10:27,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:27,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:27,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:28,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:28,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-29 09:10:28,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:10:28,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 701 [2020-10-29 09:10:28,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:28,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:28,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 09:10:28,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:10:28,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 09:10:28,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:10:28,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:10:28,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:28,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:28,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:28,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:10:28,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:10:28,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:10:28,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:28,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:28,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:10:28,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:10:28,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:10:28,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:10:28,711 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:10:28,712 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [957336505] [2020-10-29 09:10:28,713 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:10:28,713 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 09:10:28,713 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527691895] [2020-10-29 09:10:28,713 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 09:10:28,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:10:28,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 09:10:28,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-29 09:10:28,715 INFO L87 Difference]: Start difference. First operand 86 states and 104 transitions. Second operand 12 states. [2020-10-29 09:10:29,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:10:29,480 INFO L93 Difference]: Finished difference Result 133 states and 161 transitions. [2020-10-29 09:10:29,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 09:10:29,481 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 29 [2020-10-29 09:10:29,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:10:29,482 INFO L225 Difference]: With dead ends: 133 [2020-10-29 09:10:29,482 INFO L226 Difference]: Without dead ends: 122 [2020-10-29 09:10:29,483 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2020-10-29 09:10:29,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-10-29 09:10:29,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 79. [2020-10-29 09:10:29,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-29 09:10:29,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 96 transitions. [2020-10-29 09:10:29,494 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 96 transitions. Word has length 29 [2020-10-29 09:10:29,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:10:29,494 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 96 transitions. [2020-10-29 09:10:29,494 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 09:10:29,494 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 96 transitions. [2020-10-29 09:10:29,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-29 09:10:29,495 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:10:29,496 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:10:29,496 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 09:10:29,496 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:10:29,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:10:29,496 INFO L82 PathProgramCache]: Analyzing trace with hash 386573699, now seen corresponding path program 3 times [2020-10-29 09:10:29,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:10:29,497 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1714185251] [2020-10-29 09:10:29,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:10:29,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:29,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:30,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:30,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:30,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-29 09:10:30,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:10:30,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1276 [2020-10-29 09:10:30,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:30,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:30,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 09:10:30,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:10:30,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 09:10:30,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:10:31,217 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 36 [2020-10-29 09:10:31,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:10:31,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:31,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:31,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:31,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:10:31,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:10:31,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:10:31,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:31,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:31,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:10:31,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:10:31,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:10:31,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:10:31,490 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:10:31,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1714185251] [2020-10-29 09:10:31,491 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:10:31,491 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 09:10:31,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468330805] [2020-10-29 09:10:31,493 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 09:10:31,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:10:31,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 09:10:31,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-10-29 09:10:31,495 INFO L87 Difference]: Start difference. First operand 79 states and 96 transitions. Second operand 13 states. [2020-10-29 09:10:32,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:10:32,918 INFO L93 Difference]: Finished difference Result 161 states and 199 transitions. [2020-10-29 09:10:32,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 09:10:32,920 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 32 [2020-10-29 09:10:32,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:10:32,921 INFO L225 Difference]: With dead ends: 161 [2020-10-29 09:10:32,922 INFO L226 Difference]: Without dead ends: 150 [2020-10-29 09:10:32,923 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2020-10-29 09:10:32,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-10-29 09:10:32,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 97. [2020-10-29 09:10:32,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-29 09:10:32,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 120 transitions. [2020-10-29 09:10:32,934 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 120 transitions. Word has length 32 [2020-10-29 09:10:32,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:10:32,934 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 120 transitions. [2020-10-29 09:10:32,934 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 09:10:32,934 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 120 transitions. [2020-10-29 09:10:32,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-29 09:10:32,935 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:10:32,935 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] [2020-10-29 09:10:32,936 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 09:10:32,936 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:10:32,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:10:32,936 INFO L82 PathProgramCache]: Analyzing trace with hash -1580074194, now seen corresponding path program 4 times [2020-10-29 09:10:32,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:10:32,937 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [788035375] [2020-10-29 09:10:32,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:10:32,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:32,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:33,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:33,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-29 09:10:33,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:10:33,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 803 [2020-10-29 09:10:33,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:33,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:33,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 09:10:33,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:10:33,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 09:10:33,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:10:34,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:10:34,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:34,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:34,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:34,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:10:34,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:10:34,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:10:34,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:34,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:34,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:10:34,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:10:34,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:10:34,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:10:34,481 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:10:34,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [788035375] [2020-10-29 09:10:34,482 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:10:34,482 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 09:10:34,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277831627] [2020-10-29 09:10:34,483 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 09:10:34,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:10:34,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 09:10:34,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2020-10-29 09:10:34,484 INFO L87 Difference]: Start difference. First operand 97 states and 120 transitions. Second operand 13 states. [2020-10-29 09:10:35,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:10:35,842 INFO L93 Difference]: Finished difference Result 161 states and 198 transitions. [2020-10-29 09:10:35,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 09:10:35,843 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 33 [2020-10-29 09:10:35,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:10:35,844 INFO L225 Difference]: With dead ends: 161 [2020-10-29 09:10:35,844 INFO L226 Difference]: Without dead ends: 128 [2020-10-29 09:10:35,846 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2020-10-29 09:10:35,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-10-29 09:10:35,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 103. [2020-10-29 09:10:35,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-29 09:10:35,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 127 transitions. [2020-10-29 09:10:35,864 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 127 transitions. Word has length 33 [2020-10-29 09:10:35,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:10:35,864 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 127 transitions. [2020-10-29 09:10:35,865 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 09:10:35,865 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 127 transitions. [2020-10-29 09:10:35,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-29 09:10:35,875 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:10:35,875 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, 1, 1, 1, 1] [2020-10-29 09:10:35,875 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 09:10:35,876 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:10:35,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:10:35,876 INFO L82 PathProgramCache]: Analyzing trace with hash -1897904595, now seen corresponding path program 1 times [2020-10-29 09:10:35,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:10:35,877 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2014565412] [2020-10-29 09:10:35,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:10:35,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:35,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:35,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:35,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:36,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:36,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:36,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:38,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:38,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:39,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:39,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:40,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:40,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:40,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:40,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:40,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:40,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-29 09:10:40,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-29 09:10:40,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-29 09:10:40,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:40,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:40,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 09:10:40,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:10:40,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 09:10:40,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:10:41,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:10:41,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:41,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:41,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:41,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:10:41,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:10:41,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:10:41,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:41,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:41,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:10:41,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:10:41,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:10:41,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:10:41,302 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:10:41,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2014565412] [2020-10-29 09:10:41,302 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:10:41,302 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 09:10:41,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174731443] [2020-10-29 09:10:41,303 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 09:10:41,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:10:41,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 09:10:41,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-29 09:10:41,306 INFO L87 Difference]: Start difference. First operand 103 states and 127 transitions. Second operand 12 states. [2020-10-29 09:10:42,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:10:42,500 INFO L93 Difference]: Finished difference Result 154 states and 188 transitions. [2020-10-29 09:10:42,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 09:10:42,501 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 34 [2020-10-29 09:10:42,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:10:42,503 INFO L225 Difference]: With dead ends: 154 [2020-10-29 09:10:42,503 INFO L226 Difference]: Without dead ends: 141 [2020-10-29 09:10:42,504 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=89, Invalid=511, Unknown=0, NotChecked=0, Total=600 [2020-10-29 09:10:42,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-10-29 09:10:42,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 117. [2020-10-29 09:10:42,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-29 09:10:42,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 143 transitions. [2020-10-29 09:10:42,517 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 143 transitions. Word has length 34 [2020-10-29 09:10:42,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:10:42,517 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 143 transitions. [2020-10-29 09:10:42,517 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 09:10:42,517 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 143 transitions. [2020-10-29 09:10:42,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-29 09:10:42,518 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:10:42,518 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, 1, 1, 1, 1] [2020-10-29 09:10:42,518 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 09:10:42,519 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:10:42,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:10:42,519 INFO L82 PathProgramCache]: Analyzing trace with hash 1587716075, now seen corresponding path program 1 times [2020-10-29 09:10:42,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:10:42,519 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1657190373] [2020-10-29 09:10:42,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:10:42,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:42,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:42,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:42,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:42,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:42,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:43,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:43,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:45,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:47,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:47,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-29 09:10:47,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 09:10:47,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 09:10:47,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:47,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:47,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 09:10:47,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:10:47,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 09:10:47,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:10:47,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:10:47,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:47,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:47,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:47,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:10:47,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:10:47,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:10:47,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:47,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:47,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:10:47,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:10:47,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:10:47,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:10:47,813 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:10:47,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1657190373] [2020-10-29 09:10:47,814 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:10:47,814 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 09:10:47,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549059348] [2020-10-29 09:10:47,815 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 09:10:47,815 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:10:47,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 09:10:47,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-29 09:10:47,816 INFO L87 Difference]: Start difference. First operand 117 states and 143 transitions. Second operand 11 states. [2020-10-29 09:10:48,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:10:48,391 INFO L93 Difference]: Finished difference Result 153 states and 183 transitions. [2020-10-29 09:10:48,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 09:10:48,392 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 34 [2020-10-29 09:10:48,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:10:48,394 INFO L225 Difference]: With dead ends: 153 [2020-10-29 09:10:48,394 INFO L226 Difference]: Without dead ends: 116 [2020-10-29 09:10:48,395 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2020-10-29 09:10:48,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-29 09:10:48,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 109. [2020-10-29 09:10:48,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-29 09:10:48,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 131 transitions. [2020-10-29 09:10:48,407 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 131 transitions. Word has length 34 [2020-10-29 09:10:48,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:10:48,407 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 131 transitions. [2020-10-29 09:10:48,407 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 09:10:48,407 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 131 transitions. [2020-10-29 09:10:48,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-29 09:10:48,408 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:10:48,408 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, 1, 1, 1, 1] [2020-10-29 09:10:48,409 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 09:10:48,409 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:10:48,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:10:48,409 INFO L82 PathProgramCache]: Analyzing trace with hash -2036019958, now seen corresponding path program 1 times [2020-10-29 09:10:48,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:10:48,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [326745943] [2020-10-29 09:10:48,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:10:48,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:48,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:48,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:48,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:48,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:49,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:50,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:50,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:52,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:52,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-29 09:10:52,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 09:10:52,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4234 [2020-10-29 09:10:52,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:52,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:52,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 09:10:52,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:10:52,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 09:10:52,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:10:52,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:10:52,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:52,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:52,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:52,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:10:52,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:10:52,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:10:52,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:52,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:52,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:10:52,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:10:52,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:10:52,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:10:52,832 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:10:52,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [326745943] [2020-10-29 09:10:52,833 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:10:52,833 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 09:10:52,833 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572260429] [2020-10-29 09:10:52,833 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 09:10:52,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:10:52,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 09:10:52,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-29 09:10:52,835 INFO L87 Difference]: Start difference. First operand 109 states and 131 transitions. Second operand 10 states. [2020-10-29 09:10:53,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:10:53,313 INFO L93 Difference]: Finished difference Result 144 states and 173 transitions. [2020-10-29 09:10:53,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 09:10:53,314 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 34 [2020-10-29 09:10:53,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:10:53,315 INFO L225 Difference]: With dead ends: 144 [2020-10-29 09:10:53,315 INFO L226 Difference]: Without dead ends: 132 [2020-10-29 09:10:53,316 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-10-29 09:10:53,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-10-29 09:10:53,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 127. [2020-10-29 09:10:53,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-10-29 09:10:53,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 153 transitions. [2020-10-29 09:10:53,330 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 153 transitions. Word has length 34 [2020-10-29 09:10:53,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:10:53,330 INFO L481 AbstractCegarLoop]: Abstraction has 127 states and 153 transitions. [2020-10-29 09:10:53,330 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 09:10:53,330 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 153 transitions. [2020-10-29 09:10:53,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-29 09:10:53,331 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:10:53,331 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, 1, 1, 1, 1] [2020-10-29 09:10:53,331 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 09:10:53,332 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:10:53,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:10:53,332 INFO L82 PathProgramCache]: Analyzing trace with hash -1334955380, now seen corresponding path program 1 times [2020-10-29 09:10:53,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:10:53,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [796824588] [2020-10-29 09:10:53,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:10:53,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:53,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:53,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:53,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:53,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-29 09:10:53,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:10:53,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 590 [2020-10-29 09:10:53,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:53,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:53,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:10:53,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:10:53,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 09:10:53,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:10:54,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:10:54,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:54,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:54,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:54,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:10:54,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:10:54,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:10:54,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:54,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:54,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:10:54,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:10:54,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:10:54,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:10:54,084 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 09:10:54,084 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [796824588] [2020-10-29 09:10:54,088 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:10:54,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 09:10:54,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944628007] [2020-10-29 09:10:54,089 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 09:10:54,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:10:54,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 09:10:54,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-29 09:10:54,091 INFO L87 Difference]: Start difference. First operand 127 states and 153 transitions. Second operand 8 states. [2020-10-29 09:10:54,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:10:54,626 INFO L93 Difference]: Finished difference Result 194 states and 240 transitions. [2020-10-29 09:10:54,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 09:10:54,627 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34 [2020-10-29 09:10:54,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:10:54,628 INFO L225 Difference]: With dead ends: 194 [2020-10-29 09:10:54,628 INFO L226 Difference]: Without dead ends: 139 [2020-10-29 09:10:54,629 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-10-29 09:10:54,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-10-29 09:10:54,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 130. [2020-10-29 09:10:54,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-29 09:10:54,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 155 transitions. [2020-10-29 09:10:54,641 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 155 transitions. Word has length 34 [2020-10-29 09:10:54,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:10:54,641 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 155 transitions. [2020-10-29 09:10:54,641 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 09:10:54,642 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 155 transitions. [2020-10-29 09:10:54,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-29 09:10:54,642 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:10:54,642 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:10:54,643 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 09:10:54,643 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:10:54,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:10:54,643 INFO L82 PathProgramCache]: Analyzing trace with hash 1938943562, now seen corresponding path program 1 times [2020-10-29 09:10:54,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:10:54,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1608559379] [2020-10-29 09:10:54,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:10:54,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:54,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:54,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:54,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:55,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:55,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-29 09:10:55,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:10:55,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 372 [2020-10-29 09:10:55,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:55,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:55,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:10:55,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:10:55,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 09:10:55,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:10:55,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:10:55,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:55,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:55,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:55,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:10:55,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:10:55,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:10:55,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:55,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:55,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:10:55,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:10:55,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:10:55,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:10:55,158 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 09:10:55,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1608559379] [2020-10-29 09:10:55,158 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:10:55,158 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 09:10:55,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157656357] [2020-10-29 09:10:55,159 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 09:10:55,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:10:55,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 09:10:55,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-29 09:10:55,170 INFO L87 Difference]: Start difference. First operand 130 states and 155 transitions. Second operand 8 states. [2020-10-29 09:10:55,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:10:55,708 INFO L93 Difference]: Finished difference Result 151 states and 180 transitions. [2020-10-29 09:10:55,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 09:10:55,710 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34 [2020-10-29 09:10:55,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:10:55,711 INFO L225 Difference]: With dead ends: 151 [2020-10-29 09:10:55,711 INFO L226 Difference]: Without dead ends: 136 [2020-10-29 09:10:55,712 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 [2020-10-29 09:10:55,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-10-29 09:10:55,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 135. [2020-10-29 09:10:55,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-10-29 09:10:55,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 160 transitions. [2020-10-29 09:10:55,727 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 160 transitions. Word has length 34 [2020-10-29 09:10:55,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:10:55,728 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 160 transitions. [2020-10-29 09:10:55,728 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 09:10:55,728 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 160 transitions. [2020-10-29 09:10:55,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-29 09:10:55,728 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:10:55,729 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:10:55,729 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 09:10:55,729 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:10:55,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:10:55,730 INFO L82 PathProgramCache]: Analyzing trace with hash -1986251000, now seen corresponding path program 5 times [2020-10-29 09:10:55,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:10:55,730 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [252206865] [2020-10-29 09:10:55,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:10:55,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:55,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:56,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:56,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:59,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:59,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-29 09:10:59,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:10:59,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3699 [2020-10-29 09:10:59,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:59,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:59,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 09:10:59,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:10:59,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 09:10:59,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:11:00,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:11:00,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:11:00,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:00,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:11:00,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:11:00,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:11:00,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:11:00,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:11:00,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:11:00,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:11:00,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:11:00,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:11:00,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:11:00,080 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:11:00,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [252206865] [2020-10-29 09:11:00,081 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:11:00,081 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 09:11:00,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025591226] [2020-10-29 09:11:00,081 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 09:11:00,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:11:00,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 09:11:00,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2020-10-29 09:11:00,082 INFO L87 Difference]: Start difference. First operand 135 states and 160 transitions. Second operand 14 states. [2020-10-29 09:11:01,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:11:01,480 INFO L93 Difference]: Finished difference Result 221 states and 265 transitions. [2020-10-29 09:11:01,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 09:11:01,481 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 34 [2020-10-29 09:11:01,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:11:01,483 INFO L225 Difference]: With dead ends: 221 [2020-10-29 09:11:01,483 INFO L226 Difference]: Without dead ends: 209 [2020-10-29 09:11:01,484 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=79, Invalid=427, Unknown=0, NotChecked=0, Total=506 [2020-10-29 09:11:01,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-10-29 09:11:01,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 150. [2020-10-29 09:11:01,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-10-29 09:11:01,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 179 transitions. [2020-10-29 09:11:01,497 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 179 transitions. Word has length 34 [2020-10-29 09:11:01,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:11:01,497 INFO L481 AbstractCegarLoop]: Abstraction has 150 states and 179 transitions. [2020-10-29 09:11:01,497 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 09:11:01,497 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 179 transitions. [2020-10-29 09:11:01,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-29 09:11:01,498 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:11:01,498 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, 1, 1, 1, 1, 1] [2020-10-29 09:11:01,498 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 09:11:01,499 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:11:01,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:11:01,499 INFO L82 PathProgramCache]: Analyzing trace with hash -959414135, now seen corresponding path program 1 times [2020-10-29 09:11:01,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:11:01,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1028111590] [2020-10-29 09:11:01,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:11:01,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:11:01,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:01,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:02,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:02,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:11:02,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-29 09:11:02,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:11:02,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1128 [2020-10-29 09:11:02,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:11:02,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:11:02,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 09:11:02,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:11:02,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 09:11:02,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:11:02,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:11:02,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:11:02,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:02,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:11:02,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:11:02,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:11:02,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:11:02,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:11:02,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:11:02,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:11:02,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:11:02,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:11:02,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:11:02,867 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:11:02,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1028111590] [2020-10-29 09:11:02,867 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:11:02,867 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 09:11:02,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694096920] [2020-10-29 09:11:02,868 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 09:11:02,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:11:02,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 09:11:02,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-29 09:11:02,868 INFO L87 Difference]: Start difference. First operand 150 states and 179 transitions. Second operand 11 states. [2020-10-29 09:11:03,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:11:03,693 INFO L93 Difference]: Finished difference Result 182 states and 216 transitions. [2020-10-29 09:11:03,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 09:11:03,696 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 35 [2020-10-29 09:11:03,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:11:03,697 INFO L225 Difference]: With dead ends: 182 [2020-10-29 09:11:03,697 INFO L226 Difference]: Without dead ends: 166 [2020-10-29 09:11:03,698 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2020-10-29 09:11:03,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-10-29 09:11:03,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 151. [2020-10-29 09:11:03,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-10-29 09:11:03,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 179 transitions. [2020-10-29 09:11:03,712 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 179 transitions. Word has length 35 [2020-10-29 09:11:03,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:11:03,712 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 179 transitions. [2020-10-29 09:11:03,713 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 09:11:03,713 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 179 transitions. [2020-10-29 09:11:03,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-29 09:11:03,713 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:11:03,714 INFO L422 BasicCegarLoop]: trace histogram [4, 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, 1] [2020-10-29 09:11:03,714 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 09:11:03,714 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:11:03,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:11:03,714 INFO L82 PathProgramCache]: Analyzing trace with hash -2123195831, now seen corresponding path program 6 times [2020-10-29 09:11:03,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:11:03,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [334726976] [2020-10-29 09:11:03,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:11:03,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:11:03,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:04,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:11:05,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:11:05,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-29 09:11:05,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:11:05,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2183 [2020-10-29 09:11:05,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:11:05,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:11:05,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 09:11:05,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:11:05,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 09:11:05,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:11:06,109 ERROR L253 erpolLogProxyWrapper]: Interpolant 25 not inductive [2020-10-29 09:11:06,110 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-29 09:11:06,111 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: generated interpolants did not pass sanity check at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:851) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:155) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:256) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:150) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:191) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:285) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:166) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:326) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:228) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:109) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:241) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:341) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:134) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-10-29 09:11:06,116 INFO L168 Benchmark]: Toolchain (without parser) took 57913.35 ms. Allocated memory was 151.0 MB in the beginning and 784.3 MB in the end (delta: 633.3 MB). Free memory was 124.3 MB in the beginning and 625.8 MB in the end (delta: -501.4 MB). Peak memory consumption was 469.0 MB. Max. memory is 8.0 GB. [2020-10-29 09:11:06,117 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 151.0 MB. Free memory is still 124.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 09:11:06,117 INFO L168 Benchmark]: CACSL2BoogieTranslator took 673.95 ms. Allocated memory is still 151.0 MB. Free memory was 123.7 MB in the beginning and 101.1 MB in the end (delta: 22.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. [2020-10-29 09:11:06,118 INFO L168 Benchmark]: Boogie Preprocessor took 68.30 ms. Allocated memory is still 151.0 MB. Free memory was 101.1 MB in the beginning and 98.3 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-29 09:11:06,118 INFO L168 Benchmark]: RCFGBuilder took 801.70 ms. Allocated memory is still 151.0 MB. Free memory was 98.3 MB in the beginning and 87.9 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.3 MB. Max. memory is 8.0 GB. [2020-10-29 09:11:06,119 INFO L168 Benchmark]: TraceAbstraction took 56354.47 ms. Allocated memory was 151.0 MB in the beginning and 784.3 MB in the end (delta: 633.3 MB). Free memory was 87.3 MB in the beginning and 625.8 MB in the end (delta: -538.4 MB). Peak memory consumption was 431.5 MB. Max. memory is 8.0 GB. [2020-10-29 09:11:06,122 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 151.0 MB. Free memory is still 124.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 673.95 ms. Allocated memory is still 151.0 MB. Free memory was 123.7 MB in the beginning and 101.1 MB in the end (delta: 22.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 68.30 ms. Allocated memory is still 151.0 MB. Free memory was 101.1 MB in the beginning and 98.3 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 801.70 ms. Allocated memory is still 151.0 MB. Free memory was 98.3 MB in the beginning and 87.9 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 56354.47 ms. Allocated memory was 151.0 MB in the beginning and 784.3 MB in the end (delta: 633.3 MB). Free memory was 87.3 MB in the beginning and 625.8 MB in the end (delta: -538.4 MB). Peak memory consumption was 431.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: generated interpolants did not pass sanity check de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: generated interpolants did not pass sanity check: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...