/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/forester-heap/sll-buckets-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 14:30:10,637 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 14:30:10,640 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 14:30:10,676 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 14:30:10,677 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 14:30:10,678 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 14:30:10,680 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 14:30:10,683 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 14:30:10,685 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 14:30:10,686 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 14:30:10,688 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 14:30:10,689 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 14:30:10,689 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 14:30:10,691 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 14:30:10,692 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 14:30:10,694 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 14:30:10,695 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 14:30:10,696 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 14:30:10,698 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 14:30:10,700 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 14:30:10,707 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 14:30:10,709 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 14:30:10,711 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 14:30:10,712 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 14:30:10,727 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 14:30:10,728 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 14:30:10,730 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 14:30:10,732 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 14:30:10,736 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 14:30:10,738 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 14:30:10,738 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 14:30:10,739 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 14:30:10,741 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 14:30:10,742 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 14:30:10,744 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 14:30:10,744 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 14:30:10,745 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 14:30:10,745 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 14:30:10,745 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 14:30:10,747 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 14:30:10,749 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 14:30:10,750 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 14:30:10,810 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 14:30:10,810 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 14:30:10,814 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 14:30:10,814 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 14:30:10,815 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 14:30:10,815 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 14:30:10,815 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 14:30:10,816 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 14:30:10,816 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 14:30:10,816 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 14:30:10,817 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 14:30:10,817 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 14:30:10,817 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 14:30:10,818 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 14:30:10,818 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 14:30:10,818 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 14:30:10,818 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 14:30:10,818 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 14:30:10,819 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 14:30:10,819 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 14:30:10,819 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 14:30:10,820 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:30:10,820 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 14:30:10,820 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 14:30:10,820 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 14:30:10,820 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 14:30:10,821 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 14:30:10,821 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 14:30:10,821 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 14:30:10,821 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 14:30:11,235 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 14:30:11,275 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 14:30:11,280 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 14:30:11,281 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 14:30:11,282 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 14:30:11,283 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-buckets-2.i [2020-10-28 14:30:11,368 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/870296029/8878ff8592ab46c9b01f23a680502cac/FLAG588c98b4e [2020-10-28 14:30:12,037 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 14:30:12,038 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/sll-buckets-2.i [2020-10-28 14:30:12,053 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/870296029/8878ff8592ab46c9b01f23a680502cac/FLAG588c98b4e [2020-10-28 14:30:12,319 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/870296029/8878ff8592ab46c9b01f23a680502cac [2020-10-28 14:30:12,324 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 14:30:12,333 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 14:30:12,337 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 14:30:12,337 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 14:30:12,342 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 14:30:12,343 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:30:12" (1/1) ... [2020-10-28 14:30:12,348 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ecfab34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:30:12, skipping insertion in model container [2020-10-28 14:30:12,348 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:30:12" (1/1) ... [2020-10-28 14:30:12,357 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 14:30:12,429 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 14:30:12,947 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:30:12,960 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 14:30:13,010 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:30:13,072 INFO L208 MainTranslator]: Completed translation [2020-10-28 14:30:13,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:30:13 WrapperNode [2020-10-28 14:30:13,073 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 14:30:13,074 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 14:30:13,074 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 14:30:13,074 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 14:30:13,088 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:30:13" (1/1) ... [2020-10-28 14:30:13,088 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:30:13" (1/1) ... [2020-10-28 14:30:13,104 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:30:13" (1/1) ... [2020-10-28 14:30:13,105 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:30:13" (1/1) ... [2020-10-28 14:30:13,126 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:30:13" (1/1) ... [2020-10-28 14:30:13,135 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:30:13" (1/1) ... [2020-10-28 14:30:13,139 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:30:13" (1/1) ... [2020-10-28 14:30:13,146 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 14:30:13,147 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 14:30:13,148 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 14:30:13,148 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 14:30:13,149 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:30:13" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:30:13,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 14:30:13,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 14:30:13,219 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 14:30:13,219 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 14:30:13,220 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-28 14:30:13,220 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-28 14:30:13,220 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-28 14:30:13,220 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-28 14:30:13,220 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-28 14:30:13,221 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-28 14:30:13,221 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-28 14:30:13,221 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-28 14:30:13,221 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-28 14:30:13,221 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-28 14:30:13,221 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-28 14:30:13,222 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-28 14:30:13,222 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-28 14:30:13,222 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-28 14:30:13,222 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-28 14:30:13,222 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-28 14:30:13,223 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-28 14:30:13,223 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-28 14:30:13,223 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-28 14:30:13,223 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-28 14:30:13,223 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-28 14:30:13,224 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-28 14:30:13,224 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-28 14:30:13,224 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-28 14:30:13,224 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-28 14:30:13,224 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-28 14:30:13,225 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-28 14:30:13,225 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-28 14:30:13,225 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-28 14:30:13,225 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-28 14:30:13,225 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-28 14:30:13,225 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-28 14:30:13,226 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-28 14:30:13,226 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-28 14:30:13,226 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-28 14:30:13,226 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-28 14:30:13,226 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-28 14:30:13,226 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-28 14:30:13,227 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-28 14:30:13,227 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-28 14:30:13,227 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-28 14:30:13,227 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-28 14:30:13,227 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-28 14:30:13,227 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-28 14:30:13,228 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-28 14:30:13,228 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-28 14:30:13,228 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-28 14:30:13,228 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-28 14:30:13,228 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-28 14:30:13,229 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-28 14:30:13,229 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-28 14:30:13,229 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-28 14:30:13,229 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-28 14:30:13,229 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-28 14:30:13,230 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-28 14:30:13,230 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-28 14:30:13,230 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-28 14:30:13,230 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-28 14:30:13,230 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-28 14:30:13,231 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 14:30:13,231 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-28 14:30:13,231 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-28 14:30:13,231 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-28 14:30:13,231 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 14:30:13,231 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-28 14:30:13,232 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-28 14:30:13,232 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-28 14:30:13,232 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-28 14:30:13,232 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-28 14:30:13,232 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-28 14:30:13,232 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-28 14:30:13,233 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-28 14:30:13,233 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-28 14:30:13,233 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-28 14:30:13,233 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-28 14:30:13,233 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-28 14:30:13,234 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-28 14:30:13,234 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-28 14:30:13,234 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-28 14:30:13,234 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-28 14:30:13,234 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-28 14:30:13,235 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-28 14:30:13,235 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-28 14:30:13,235 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-28 14:30:13,235 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-28 14:30:13,235 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-28 14:30:13,235 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-28 14:30:13,236 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-28 14:30:13,236 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-28 14:30:13,236 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-28 14:30:13,236 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-28 14:30:13,236 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-28 14:30:13,236 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-28 14:30:13,237 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-28 14:30:13,237 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-28 14:30:13,237 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-28 14:30:13,237 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-28 14:30:13,237 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-28 14:30:13,237 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-28 14:30:13,238 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-28 14:30:13,238 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-28 14:30:13,238 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-28 14:30:13,238 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-28 14:30:13,238 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 14:30:13,238 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 14:30:13,239 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-28 14:30:13,239 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-28 14:30:13,239 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 14:30:13,239 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 14:30:13,239 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 14:30:13,240 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-28 14:30:13,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 14:30:13,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-28 14:30:13,240 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-28 14:30:13,240 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 14:30:13,240 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 14:30:13,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 14:30:13,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 14:30:13,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 14:30:13,984 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 14:30:13,985 INFO L298 CfgBuilder]: Removed 15 assume(true) statements. [2020-10-28 14:30:13,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:30:13 BoogieIcfgContainer [2020-10-28 14:30:13,987 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 14:30:13,989 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 14:30:13,989 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 14:30:13,993 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 14:30:13,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 02:30:12" (1/3) ... [2020-10-28 14:30:13,994 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49c6e2c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:30:13, skipping insertion in model container [2020-10-28 14:30:13,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:30:13" (2/3) ... [2020-10-28 14:30:13,994 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49c6e2c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:30:13, skipping insertion in model container [2020-10-28 14:30:13,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:30:13" (3/3) ... [2020-10-28 14:30:13,996 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-buckets-2.i [2020-10-28 14:30:14,009 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 14:30:14,015 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 14:30:14,028 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 14:30:14,057 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 14:30:14,057 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 14:30:14,057 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 14:30:14,057 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 14:30:14,057 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 14:30:14,058 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 14:30:14,058 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 14:30:14,058 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 14:30:14,076 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2020-10-28 14:30:14,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-28 14:30:14,083 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:30:14,084 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:30:14,085 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:30:14,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:30:14,091 INFO L82 PathProgramCache]: Analyzing trace with hash -2031057720, now seen corresponding path program 1 times [2020-10-28 14:30:14,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:30:14,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [537900854] [2020-10-28 14:30:14,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:30:14,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:30:14,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:14,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:30:14,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 14:30:14,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:30:14,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 398 [2020-10-28 14:30:14,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:30:14,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:30:14,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 14:30:14,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:30:14,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 14:30:14,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 14:30:14,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:30:14,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:30:14,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:14,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:30:14,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:30:14,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:30:14,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 14:30:14,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:30:14,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:30:14,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:30:14,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:30:14,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:30:14,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:30:14,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:30:14,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [537900854] [2020-10-28 14:30:14,905 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:30:14,905 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 14:30:14,906 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061892393] [2020-10-28 14:30:14,911 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 14:30:14,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:30:14,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 14:30:14,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:30:14,931 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 5 states. [2020-10-28 14:30:15,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:30:15,224 INFO L93 Difference]: Finished difference Result 120 states and 208 transitions. [2020-10-28 14:30:15,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 14:30:15,226 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-28 14:30:15,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:30:15,237 INFO L225 Difference]: With dead ends: 120 [2020-10-28 14:30:15,237 INFO L226 Difference]: Without dead ends: 67 [2020-10-28 14:30:15,241 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 [2020-10-28 14:30:15,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-28 14:30:15,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 44. [2020-10-28 14:30:15,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-28 14:30:15,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 55 transitions. [2020-10-28 14:30:15,291 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 55 transitions. Word has length 14 [2020-10-28 14:30:15,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:30:15,291 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 55 transitions. [2020-10-28 14:30:15,292 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 14:30:15,292 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 55 transitions. [2020-10-28 14:30:15,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-28 14:30:15,293 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:30:15,293 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:30:15,294 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 14:30:15,294 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:30:15,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:30:15,295 INFO L82 PathProgramCache]: Analyzing trace with hash 1948730651, now seen corresponding path program 1 times [2020-10-28 14:30:15,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:30:15,295 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [874859245] [2020-10-28 14:30:15,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:30:15,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:30:15,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:15,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:15,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:30:15,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-28 14:30:15,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:30:15,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 467 [2020-10-28 14:30:15,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:30:15,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:30:15,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:30:15,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 14:30:15,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 14:30:15,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:30:15,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:30:15,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:30:15,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:15,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:30:15,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:30:15,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:30:15,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 14:30:15,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:30:15,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:30:15,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:30:15,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:30:15,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:30:15,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:30:15,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:30:15,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [874859245] [2020-10-28 14:30:15,868 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:30:15,868 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 14:30:15,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606687850] [2020-10-28 14:30:15,870 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 14:30:15,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:30:15,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 14:30:15,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 14:30:15,871 INFO L87 Difference]: Start difference. First operand 44 states and 55 transitions. Second operand 4 states. [2020-10-28 14:30:16,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:30:16,040 INFO L93 Difference]: Finished difference Result 51 states and 62 transitions. [2020-10-28 14:30:16,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 14:30:16,041 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-28 14:30:16,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:30:16,042 INFO L225 Difference]: With dead ends: 51 [2020-10-28 14:30:16,042 INFO L226 Difference]: Without dead ends: 47 [2020-10-28 14:30:16,043 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 14:30:16,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-28 14:30:16,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 43. [2020-10-28 14:30:16,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-28 14:30:16,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 53 transitions. [2020-10-28 14:30:16,074 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 53 transitions. Word has length 15 [2020-10-28 14:30:16,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:30:16,074 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 53 transitions. [2020-10-28 14:30:16,074 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 14:30:16,074 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 53 transitions. [2020-10-28 14:30:16,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-28 14:30:16,075 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:30:16,075 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:30:16,075 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 14:30:16,076 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:30:16,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:30:16,076 INFO L82 PathProgramCache]: Analyzing trace with hash 314866980, now seen corresponding path program 1 times [2020-10-28 14:30:16,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:30:16,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [192229082] [2020-10-28 14:30:16,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:30:16,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:30:16,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:16,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:30:16,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 14:30:16,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:30:16,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-28 14:30:16,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:30:16,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:30:16,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:30:16,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:30:16,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 14:30:16,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:30:16,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:30:16,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:30:16,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:16,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:30:16,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:30:16,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:30:16,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:30:16,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:30:16,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:30:16,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:30:16,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:30:16,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:30:16,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:30:16,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:30:16,389 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [192229082] [2020-10-28 14:30:16,390 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:30:16,390 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 14:30:16,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71039108] [2020-10-28 14:30:16,391 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 14:30:16,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:30:16,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 14:30:16,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 14:30:16,392 INFO L87 Difference]: Start difference. First operand 43 states and 53 transitions. Second operand 6 states. [2020-10-28 14:30:16,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:30:16,722 INFO L93 Difference]: Finished difference Result 67 states and 82 transitions. [2020-10-28 14:30:16,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 14:30:16,722 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-10-28 14:30:16,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:30:16,724 INFO L225 Difference]: With dead ends: 67 [2020-10-28 14:30:16,725 INFO L226 Difference]: Without dead ends: 54 [2020-10-28 14:30:16,725 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-28 14:30:16,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-28 14:30:16,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 48. [2020-10-28 14:30:16,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-28 14:30:16,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 59 transitions. [2020-10-28 14:30:16,735 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 59 transitions. Word has length 16 [2020-10-28 14:30:16,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:30:16,736 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 59 transitions. [2020-10-28 14:30:16,736 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 14:30:16,736 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 59 transitions. [2020-10-28 14:30:16,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-28 14:30:16,737 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:30:16,737 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:30:16,737 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 14:30:16,737 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:30:16,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:30:16,738 INFO L82 PathProgramCache]: Analyzing trace with hash -1947134467, now seen corresponding path program 1 times [2020-10-28 14:30:16,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:30:16,739 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1432114076] [2020-10-28 14:30:16,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:30:16,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:30:16,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:16,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:30:16,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 14:30:16,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:30:16,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-28 14:30:16,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:30:16,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:30:16,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:30:16,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 14:30:16,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 14:30:16,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:30:16,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:30:16,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:30:16,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:16,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:30:16,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:30:16,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:30:16,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:30:16,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:30:16,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:30:16,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:30:16,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:30:16,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:30:16,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:30:16,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:30:16,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1432114076] [2020-10-28 14:30:16,910 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:30:16,910 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 14:30:16,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978037378] [2020-10-28 14:30:16,911 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 14:30:16,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:30:16,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 14:30:16,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 14:30:16,912 INFO L87 Difference]: Start difference. First operand 48 states and 59 transitions. Second operand 4 states. [2020-10-28 14:30:17,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:30:17,222 INFO L93 Difference]: Finished difference Result 52 states and 62 transitions. [2020-10-28 14:30:17,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 14:30:17,223 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-10-28 14:30:17,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:30:17,224 INFO L225 Difference]: With dead ends: 52 [2020-10-28 14:30:17,224 INFO L226 Difference]: Without dead ends: 48 [2020-10-28 14:30:17,225 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 14:30:17,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-28 14:30:17,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-10-28 14:30:17,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-28 14:30:17,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 57 transitions. [2020-10-28 14:30:17,233 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 57 transitions. Word has length 16 [2020-10-28 14:30:17,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:30:17,233 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 57 transitions. [2020-10-28 14:30:17,233 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 14:30:17,233 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 57 transitions. [2020-10-28 14:30:17,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-28 14:30:17,234 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:30:17,234 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:30:17,235 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 14:30:17,235 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:30:17,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:30:17,235 INFO L82 PathProgramCache]: Analyzing trace with hash 59150788, now seen corresponding path program 1 times [2020-10-28 14:30:17,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:30:17,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [843672566] [2020-10-28 14:30:17,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:30:17,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:30:17,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:17,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:30:17,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-28 14:30:17,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:30:17,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 288 [2020-10-28 14:30:17,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:30:17,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:30:17,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:30:17,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:30:17,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 14:30:17,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:30:17,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:30:17,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:30:17,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:17,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:30:17,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:30:17,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:30:17,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 14:30:17,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:30:17,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:30:17,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:30:17,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:30:17,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:30:17,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:30:17,904 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:30:17,904 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [843672566] [2020-10-28 14:30:17,905 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:30:17,905 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 14:30:17,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026054009] [2020-10-28 14:30:17,905 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 14:30:17,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:30:17,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 14:30:17,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-28 14:30:17,907 INFO L87 Difference]: Start difference. First operand 47 states and 57 transitions. Second operand 8 states. [2020-10-28 14:30:18,269 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 53 [2020-10-28 14:30:18,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:30:18,505 INFO L93 Difference]: Finished difference Result 68 states and 82 transitions. [2020-10-28 14:30:18,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 14:30:18,505 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2020-10-28 14:30:18,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:30:18,507 INFO L225 Difference]: With dead ends: 68 [2020-10-28 14:30:18,507 INFO L226 Difference]: Without dead ends: 55 [2020-10-28 14:30:18,508 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2020-10-28 14:30:18,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-28 14:30:18,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 52. [2020-10-28 14:30:18,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-28 14:30:18,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 62 transitions. [2020-10-28 14:30:18,523 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 62 transitions. Word has length 21 [2020-10-28 14:30:18,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:30:18,525 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 62 transitions. [2020-10-28 14:30:18,525 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 14:30:18,526 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 62 transitions. [2020-10-28 14:30:18,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-28 14:30:18,527 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:30:18,527 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] [2020-10-28 14:30:18,528 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 14:30:18,528 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:30:18,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:30:18,529 INFO L82 PathProgramCache]: Analyzing trace with hash -465827442, now seen corresponding path program 1 times [2020-10-28 14:30:18,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:30:18,529 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [835204161] [2020-10-28 14:30:18,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:30:18,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:30:18,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:18,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:18,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:19,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:30:19,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 14:30:19,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:30:19,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 579 [2020-10-28 14:30:19,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:30:19,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:30:19,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:30:19,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:30:19,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 14:30:19,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:30:19,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:30:19,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:30:19,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:19,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:30:19,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:30:19,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:30:19,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:30:19,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:30:19,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:30:19,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:30:19,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:30:19,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:30:19,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:30:19,291 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:30:19,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [835204161] [2020-10-28 14:30:19,294 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:30:19,294 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 14:30:19,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534206034] [2020-10-28 14:30:19,295 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 14:30:19,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:30:19,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 14:30:19,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-28 14:30:19,296 INFO L87 Difference]: Start difference. First operand 52 states and 62 transitions. Second operand 8 states. [2020-10-28 14:30:19,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:30:19,871 INFO L93 Difference]: Finished difference Result 103 states and 129 transitions. [2020-10-28 14:30:19,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 14:30:19,873 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2020-10-28 14:30:19,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:30:19,875 INFO L225 Difference]: With dead ends: 103 [2020-10-28 14:30:19,876 INFO L226 Difference]: Without dead ends: 99 [2020-10-28 14:30:19,876 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-28 14:30:19,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-28 14:30:19,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 61. [2020-10-28 14:30:19,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-28 14:30:19,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 74 transitions. [2020-10-28 14:30:19,896 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 74 transitions. Word has length 22 [2020-10-28 14:30:19,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:30:19,897 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 74 transitions. [2020-10-28 14:30:19,901 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 14:30:19,902 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 74 transitions. [2020-10-28 14:30:19,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-28 14:30:19,903 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:30:19,903 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:30:19,903 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 14:30:19,903 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:30:19,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:30:19,904 INFO L82 PathProgramCache]: Analyzing trace with hash 311951251, now seen corresponding path program 2 times [2020-10-28 14:30:19,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:30:19,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1908973532] [2020-10-28 14:30:19,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:30:19,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:30:19,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:20,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:20,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:20,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:30:20,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 14:30:20,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:30:20,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 910 [2020-10-28 14:30:20,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:30:20,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:30:20,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 14:30:20,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:30:20,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 14:30:20,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:30:20,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:30:20,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:30:20,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:20,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:30:20,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:30:20,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:30:20,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 14:30:20,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:30:20,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:30:20,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:30:20,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:30:20,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:30:20,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:30:21,009 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:30:21,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1908973532] [2020-10-28 14:30:21,010 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:30:21,010 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 14:30:21,010 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706431977] [2020-10-28 14:30:21,011 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 14:30:21,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:30:21,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 14:30:21,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-28 14:30:21,013 INFO L87 Difference]: Start difference. First operand 61 states and 74 transitions. Second operand 9 states. [2020-10-28 14:30:21,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:30:21,679 INFO L93 Difference]: Finished difference Result 109 states and 138 transitions. [2020-10-28 14:30:21,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 14:30:21,680 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2020-10-28 14:30:21,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:30:21,682 INFO L225 Difference]: With dead ends: 109 [2020-10-28 14:30:21,682 INFO L226 Difference]: Without dead ends: 105 [2020-10-28 14:30:21,683 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-10-28 14:30:21,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-10-28 14:30:21,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 63. [2020-10-28 14:30:21,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-28 14:30:21,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 77 transitions. [2020-10-28 14:30:21,704 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 77 transitions. Word has length 24 [2020-10-28 14:30:21,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:30:21,705 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 77 transitions. [2020-10-28 14:30:21,705 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 14:30:21,705 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 77 transitions. [2020-10-28 14:30:21,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-28 14:30:21,706 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:30:21,706 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:30:21,706 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 14:30:21,706 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:30:21,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:30:21,707 INFO L82 PathProgramCache]: Analyzing trace with hash 1844994340, now seen corresponding path program 2 times [2020-10-28 14:30:21,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:30:21,707 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [921515023] [2020-10-28 14:30:21,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:30:21,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:30:21,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:22,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:30:22,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-28 14:30:22,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:30:22,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 436 [2020-10-28 14:30:22,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:30:22,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:30:22,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 14:30:22,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:30:22,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 14:30:22,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:30:22,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:30:22,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:30:22,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:22,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:30:22,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:30:22,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:30:22,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:30:22,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:30:22,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:30:22,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:30:22,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:30:22,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:30:22,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:30:22,601 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:30:22,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [921515023] [2020-10-28 14:30:22,602 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:30:22,602 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 14:30:22,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69213521] [2020-10-28 14:30:22,603 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 14:30:22,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:30:22,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 14:30:22,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-28 14:30:22,605 INFO L87 Difference]: Start difference. First operand 63 states and 77 transitions. Second operand 10 states. [2020-10-28 14:30:23,019 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 70 [2020-10-28 14:30:23,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:30:23,636 INFO L93 Difference]: Finished difference Result 85 states and 101 transitions. [2020-10-28 14:30:23,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 14:30:23,637 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 26 [2020-10-28 14:30:23,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:30:23,638 INFO L225 Difference]: With dead ends: 85 [2020-10-28 14:30:23,638 INFO L226 Difference]: Without dead ends: 72 [2020-10-28 14:30:23,639 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2020-10-28 14:30:23,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-28 14:30:23,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 68. [2020-10-28 14:30:23,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-28 14:30:23,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 82 transitions. [2020-10-28 14:30:23,659 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 82 transitions. Word has length 26 [2020-10-28 14:30:23,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:30:23,660 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 82 transitions. [2020-10-28 14:30:23,660 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 14:30:23,660 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 82 transitions. [2020-10-28 14:30:23,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-28 14:30:23,666 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:30:23,666 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:30:23,666 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 14:30:23,666 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:30:23,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:30:23,667 INFO L82 PathProgramCache]: Analyzing trace with hash 432965720, now seen corresponding path program 3 times [2020-10-28 14:30:23,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:30:23,667 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [281897117] [2020-10-28 14:30:23,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:30:23,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:30:23,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:23,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:30:23,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-28 14:30:23,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:30:23,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 229 [2020-10-28 14:30:23,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:30:23,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:30:23,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:30:23,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:30:23,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 14:30:23,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:30:24,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:30:24,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:30:24,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:24,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:30:24,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:30:24,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:30:24,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:30:24,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:30:24,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:30:24,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:30:24,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:30:24,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:30:24,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:30:24,095 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-28 14:30:24,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [281897117] [2020-10-28 14:30:24,101 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:30:24,101 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-28 14:30:24,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824038528] [2020-10-28 14:30:24,102 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 14:30:24,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:30:24,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 14:30:24,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-28 14:30:24,104 INFO L87 Difference]: Start difference. First operand 68 states and 82 transitions. Second operand 8 states. [2020-10-28 14:30:24,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:30:24,784 INFO L93 Difference]: Finished difference Result 151 states and 187 transitions. [2020-10-28 14:30:24,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 14:30:24,785 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2020-10-28 14:30:24,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:30:24,786 INFO L225 Difference]: With dead ends: 151 [2020-10-28 14:30:24,787 INFO L226 Difference]: Without dead ends: 113 [2020-10-28 14:30:24,788 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-10-28 14:30:24,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-28 14:30:24,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 82. [2020-10-28 14:30:24,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-28 14:30:24,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 99 transitions. [2020-10-28 14:30:24,810 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 99 transitions. Word has length 26 [2020-10-28 14:30:24,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:30:24,811 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 99 transitions. [2020-10-28 14:30:24,811 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 14:30:24,811 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 99 transitions. [2020-10-28 14:30:24,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-28 14:30:24,818 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:30:24,818 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:30:24,818 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 14:30:24,818 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:30:24,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:30:24,819 INFO L82 PathProgramCache]: Analyzing trace with hash 1301750367, now seen corresponding path program 1 times [2020-10-28 14:30:24,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:30:24,820 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [467728201] [2020-10-28 14:30:24,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:30:24,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:30:24,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:25,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:30:25,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-28 14:30:25,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:30:25,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 251 [2020-10-28 14:30:25,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:30:25,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:30:25,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 14:30:25,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:30:25,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 14:30:25,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:30:25,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:30:25,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:30:25,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:25,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:30:25,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:30:25,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:30:25,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 14:30:25,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:30:25,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:30:25,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:30:25,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:30:25,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:30:25,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 14:30:25,264 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-28 14:30:25,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [467728201] [2020-10-28 14:30:25,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:30:25,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 14:30:25,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272719255] [2020-10-28 14:30:25,266 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 14:30:25,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:30:25,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 14:30:25,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-28 14:30:25,267 INFO L87 Difference]: Start difference. First operand 82 states and 99 transitions. Second operand 9 states. [2020-10-28 14:30:26,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:30:26,211 INFO L93 Difference]: Finished difference Result 165 states and 203 transitions. [2020-10-28 14:30:26,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 14:30:26,212 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2020-10-28 14:30:26,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:30:26,213 INFO L225 Difference]: With dead ends: 165 [2020-10-28 14:30:26,214 INFO L226 Difference]: Without dead ends: 129 [2020-10-28 14:30:26,214 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2020-10-28 14:30:26,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-10-28 14:30:26,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 91. [2020-10-28 14:30:26,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-28 14:30:26,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 109 transitions. [2020-10-28 14:30:26,225 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 109 transitions. Word has length 27 [2020-10-28 14:30:26,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:30:26,225 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 109 transitions. [2020-10-28 14:30:26,225 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 14:30:26,225 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 109 transitions. [2020-10-28 14:30:26,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-28 14:30:26,226 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:30:26,226 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:30:26,227 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 14:30:26,227 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:30:26,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:30:26,227 INFO L82 PathProgramCache]: Analyzing trace with hash -692394339, now seen corresponding path program 1 times [2020-10-28 14:30:26,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:30:26,228 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1786199800] [2020-10-28 14:30:26,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:30:26,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:30:26,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:26,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:30:26,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-28 14:30:26,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:30:26,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 355 [2020-10-28 14:30:26,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:30:26,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:30:26,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 14:30:26,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:30:26,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 14:30:26,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:30:26,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:30:26,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:30:26,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:30:26,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:30:26,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:30:26,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:30:26,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:30:26,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:30:26,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:30:26,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:30:26,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:30:26,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:30:26,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:30:26,871 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:30:26,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1786199800] [2020-10-28 14:30:26,871 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:30:26,872 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 14:30:26,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912201784] [2020-10-28 14:30:26,872 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 14:30:26,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:30:26,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 14:30:26,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-28 14:30:26,873 INFO L87 Difference]: Start difference. First operand 91 states and 109 transitions. Second operand 10 states. [2020-10-28 14:30:28,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:30:28,226 INFO L93 Difference]: Finished difference Result 168 states and 205 transitions. [2020-10-28 14:30:28,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 14:30:28,227 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 27 [2020-10-28 14:30:28,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:30:28,228 INFO L225 Difference]: With dead ends: 168 [2020-10-28 14:30:28,228 INFO L226 Difference]: Without dead ends: 132 [2020-10-28 14:30:28,232 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2020-10-28 14:30:28,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-10-28 14:30:28,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 89. [2020-10-28 14:30:28,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-28 14:30:28,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 106 transitions. [2020-10-28 14:30:28,257 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 106 transitions. Word has length 27 [2020-10-28 14:30:28,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:30:28,257 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 106 transitions. [2020-10-28 14:30:28,257 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 14:30:28,257 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 106 transitions. [2020-10-28 14:30:28,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-28 14:30:28,258 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:30:28,259 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, 1, 1] [2020-10-28 14:30:28,259 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 14:30:28,264 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:30:28,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:30:28,265 INFO L82 PathProgramCache]: Analyzing trace with hash 95128516, now seen corresponding path program 1 times [2020-10-28 14:30:28,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:30:28,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [681226793] [2020-10-28 14:30:28,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:30:28,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-28 14:30:28,307 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-28 14:30:28,307 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-28 14:30:28,313 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 14:30:28,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 02:30:28 BoogieIcfgContainer [2020-10-28 14:30:28,339 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 14:30:28,341 INFO L168 Benchmark]: Toolchain (without parser) took 16013.20 ms. Allocated memory was 151.0 MB in the beginning and 314.6 MB in the end (delta: 163.6 MB). Free memory was 123.9 MB in the beginning and 115.2 MB in the end (delta: 8.8 MB). Peak memory consumption was 172.9 MB. Max. memory is 8.0 GB. [2020-10-28 14:30:28,342 INFO L168 Benchmark]: CDTParser took 0.56 ms. Allocated memory is still 151.0 MB. Free memory is still 124.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 14:30:28,346 INFO L168 Benchmark]: CACSL2BoogieTranslator took 735.90 ms. Allocated memory is still 151.0 MB. Free memory was 123.4 MB in the beginning and 101.1 MB in the end (delta: 22.4 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. [2020-10-28 14:30:28,350 INFO L168 Benchmark]: Boogie Preprocessor took 72.70 ms. Allocated memory is still 151.0 MB. Free memory was 101.1 MB in the beginning and 98.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-10-28 14:30:28,351 INFO L168 Benchmark]: RCFGBuilder took 839.67 ms. Allocated memory is still 151.0 MB. Free memory was 98.0 MB in the beginning and 95.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 20.3 MB. Max. memory is 8.0 GB. [2020-10-28 14:30:28,354 INFO L168 Benchmark]: TraceAbstraction took 14350.00 ms. Allocated memory was 151.0 MB in the beginning and 314.6 MB in the end (delta: 163.6 MB). Free memory was 95.2 MB in the beginning and 115.2 MB in the end (delta: -19.9 MB). Peak memory consumption was 143.1 MB. Max. memory is 8.0 GB. [2020-10-28 14:30:28,362 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.56 ms. Allocated memory is still 151.0 MB. Free memory is still 124.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 735.90 ms. Allocated memory is still 151.0 MB. Free memory was 123.4 MB in the beginning and 101.1 MB in the end (delta: 22.4 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 72.70 ms. Allocated memory is still 151.0 MB. Free memory was 101.1 MB in the beginning and 98.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 839.67 ms. Allocated memory is still 151.0 MB. Free memory was 98.0 MB in the beginning and 95.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 20.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 14350.00 ms. Allocated memory was 151.0 MB in the beginning and 314.6 MB in the end (delta: 163.6 MB). Free memory was 95.2 MB in the beginning and 115.2 MB in the end (delta: -19.9 MB). Peak memory consumption was 143.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 985]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L1004] BCK* bucket = malloc(sizeof(BCK)); [L1005] bucket->data = 0 [L1006] bucket->list = ((void*)0) [L1008] bucket->next = malloc(sizeof(BCK)) [L1009] EXPR bucket->next [L1009] BCK* bcki = bucket->next; [L1010] bcki->data = 1 [L1011] bcki->list = ((void*)0) [L1013] bcki->next = malloc(sizeof(BCK)) [L1014] EXPR bcki->next [L1014] bcki = bcki->next [L1015] bcki->data = 2 [L1016] bcki->list = ((void*)0) [L1017] bcki->next = ((void*)0) [L1019] struct TSLL* item = ((void*)0); [L1020] struct TSLL* itr = ((void*)0); [L1021] COND TRUE __VERIFIER_nondet_int() [L1023] item = malloc(sizeof(SLL)) [L1024] item->next = ((void*)0) [L1025] COND TRUE __VERIFIER_nondet_int() [L1026] item->data = 0 [L1032] bcki = bucket [L1034] COND FALSE !(!(bcki != ((void*)0))) [L1035] COND FALSE !(!(item != ((void*)0))) [L1036] EXPR bcki->data [L1036] EXPR item->data [L1036] COND FALSE !(bcki->data != item->data) [L1038] COND FALSE !(!(bcki != ((void*)0))) [L1040] EXPR bcki->list [L1040] COND TRUE bcki->list == ((void*)0) [L1041] bcki->list = item [L1021] COND FALSE !(__VERIFIER_nondet_int()) [L1052] bcki = bucket [L1053] COND TRUE bcki != ((void*)0) [L1055] EXPR bcki->list [L1055] item = bcki->list [L1056] bcki->list = ((void*)0) [L1057] COND TRUE item != ((void*)0) [L1059] itr = item [L1060] EXPR item->next [L1060] item = item->next [L1061] EXPR itr->data [L1061] EXPR bcki->data [L1061] COND TRUE !(itr->data != bcki->data) [L1061] CALL reach_error() [L985] COND FALSE !(0) [L985] __assert_fail ("0", "sll-buckets-2.c", 14, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 54 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 14.2s, OverallIterations: 12, TraceHistogramMax: 4, AutomataDifference: 7.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 416 SDtfs, 717 SDslu, 1166 SDs, 0 SdLazy, 2125 SolverSat, 193 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 127 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 2.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=91occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 233 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 6.1s InterpolantComputationTime, 264 NumberOfCodeBlocks, 264 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 223 ConstructedInterpolants, 0 QuantifiedInterpolants, 81854 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 5 PerfectInterpolantSequences, 28/55 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...