/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=DEEPEST --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/list-properties/list_search-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 20:00:22,160 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 20:00:22,163 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 20:00:22,199 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 20:00:22,200 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 20:00:22,201 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 20:00:22,203 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 20:00:22,206 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 20:00:22,208 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 20:00:22,210 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 20:00:22,211 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 20:00:22,213 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 20:00:22,213 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 20:00:22,214 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 20:00:22,216 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 20:00:22,217 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 20:00:22,218 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 20:00:22,220 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 20:00:22,222 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 20:00:22,224 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 20:00:22,226 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 20:00:22,228 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 20:00:22,230 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 20:00:22,231 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 20:00:22,234 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 20:00:22,235 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 20:00:22,235 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 20:00:22,236 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 20:00:22,237 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 20:00:22,238 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 20:00:22,238 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 20:00:22,239 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 20:00:22,240 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 20:00:22,241 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 20:00:22,242 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 20:00:22,243 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 20:00:22,244 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 20:00:22,244 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 20:00:22,244 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 20:00:22,246 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 20:00:22,246 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 20:00:22,248 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 [2020-10-27 20:00:22,308 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 20:00:22,308 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 20:00:22,313 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 20:00:22,313 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 20:00:22,313 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 20:00:22,314 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 20:00:22,314 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 20:00:22,315 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 20:00:22,315 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 20:00:22,315 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 20:00:22,315 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 20:00:22,315 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 20:00:22,316 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 20:00:22,316 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 20:00:22,316 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 20:00:22,316 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 20:00:22,316 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 20:00:22,317 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 20:00:22,317 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 20:00:22,318 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 20:00:22,318 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 20:00:22,319 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 20:00:22,319 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 20:00:22,319 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 20:00:22,319 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 20:00:22,319 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 20:00:22,320 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 20:00:22,320 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 20:00:22,320 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 20:00:22,321 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 20:00:22,724 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 20:00:22,753 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 20:00:22,756 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 20:00:22,757 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 20:00:22,758 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 20:00:22,759 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/list_search-1.i [2020-10-27 20:00:22,843 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/522257bb1/edff9021f2794cc7a7005e95c0e105c1/FLAG8fb59a574 [2020-10-27 20:00:23,659 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 20:00:23,660 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-properties/list_search-1.i [2020-10-27 20:00:23,681 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/522257bb1/edff9021f2794cc7a7005e95c0e105c1/FLAG8fb59a574 [2020-10-27 20:00:23,900 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/522257bb1/edff9021f2794cc7a7005e95c0e105c1 [2020-10-27 20:00:23,906 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 20:00:23,916 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 20:00:23,920 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 20:00:23,920 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 20:00:23,924 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 20:00:23,925 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:00:23" (1/1) ... [2020-10-27 20:00:23,930 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b89cf66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:00:23, skipping insertion in model container [2020-10-27 20:00:23,931 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:00:23" (1/1) ... [2020-10-27 20:00:23,940 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 20:00:24,001 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 20:00:24,310 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 20:00:24,321 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 20:00:24,376 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 20:00:24,472 INFO L208 MainTranslator]: Completed translation [2020-10-27 20:00:24,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:00:24 WrapperNode [2020-10-27 20:00:24,473 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 20:00:24,475 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 20:00:24,475 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 20:00:24,475 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 20:00:24,489 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:00:24" (1/1) ... [2020-10-27 20:00:24,491 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:00:24" (1/1) ... [2020-10-27 20:00:24,537 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:00:24" (1/1) ... [2020-10-27 20:00:24,538 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:00:24" (1/1) ... [2020-10-27 20:00:24,572 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:00:24" (1/1) ... [2020-10-27 20:00:24,587 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:00:24" (1/1) ... [2020-10-27 20:00:24,595 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:00:24" (1/1) ... [2020-10-27 20:00:24,609 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 20:00:24,610 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 20:00:24,611 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 20:00:24,611 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 20:00:24,612 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:00:24" (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 [2020-10-27 20:00:24,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 20:00:24,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 20:00:24,704 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 20:00:24,704 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-27 20:00:24,705 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-27 20:00:24,706 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-27 20:00:24,706 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-10-27 20:00:24,706 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-10-27 20:00:24,706 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-10-27 20:00:24,707 INFO L138 BoogieDeclarations]: Found implementation of procedure search_list [2020-10-27 20:00:24,708 INFO L138 BoogieDeclarations]: Found implementation of procedure insert_list [2020-10-27 20:00:24,708 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 20:00:24,708 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 20:00:24,709 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 20:00:24,709 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-27 20:00:24,710 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-27 20:00:24,710 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 20:00:24,711 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 20:00:24,711 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-27 20:00:24,711 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-27 20:00:24,711 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-27 20:00:24,711 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-27 20:00:24,712 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-27 20:00:24,712 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-27 20:00:24,712 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-27 20:00:24,712 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-27 20:00:24,712 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-27 20:00:24,712 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-27 20:00:24,712 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-27 20:00:24,713 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-27 20:00:24,713 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-27 20:00:24,713 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-27 20:00:24,713 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-27 20:00:24,713 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-27 20:00:24,713 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-27 20:00:24,714 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-27 20:00:24,714 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-27 20:00:24,714 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-10-27 20:00:24,714 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-10-27 20:00:24,714 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-10-27 20:00:24,714 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-27 20:00:24,715 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-27 20:00:24,715 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-27 20:00:24,715 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-27 20:00:24,715 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-27 20:00:24,715 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-27 20:00:24,715 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-27 20:00:24,715 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-27 20:00:24,716 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-27 20:00:24,716 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-27 20:00:24,716 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-27 20:00:24,716 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-27 20:00:24,717 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-27 20:00:24,717 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-27 20:00:24,717 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-27 20:00:24,718 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-27 20:00:24,719 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-27 20:00:24,719 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-27 20:00:24,719 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-27 20:00:24,719 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-27 20:00:24,720 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-27 20:00:24,720 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-27 20:00:24,720 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-27 20:00:24,720 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-27 20:00:24,720 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-27 20:00:24,720 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-27 20:00:24,721 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-27 20:00:24,721 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-27 20:00:24,721 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-27 20:00:24,721 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-27 20:00:24,721 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-27 20:00:24,722 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-27 20:00:24,724 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-27 20:00:24,724 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-27 20:00:24,724 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-27 20:00:24,724 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-27 20:00:24,725 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-27 20:00:24,725 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-27 20:00:24,725 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-27 20:00:24,725 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-27 20:00:24,725 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-27 20:00:24,726 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-27 20:00:24,726 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-27 20:00:24,726 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-27 20:00:24,727 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-27 20:00:24,727 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 20:00:24,728 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-27 20:00:24,729 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-27 20:00:24,729 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-27 20:00:24,729 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-27 20:00:24,734 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-27 20:00:24,734 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-27 20:00:24,734 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-27 20:00:24,734 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-27 20:00:24,734 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-27 20:00:24,734 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-27 20:00:24,735 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-27 20:00:24,735 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-27 20:00:24,735 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-27 20:00:24,735 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-27 20:00:24,735 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-27 20:00:24,736 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-27 20:00:24,736 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-27 20:00:24,736 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-27 20:00:24,736 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-27 20:00:24,736 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-27 20:00:24,737 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-27 20:00:24,737 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-27 20:00:24,737 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-27 20:00:24,737 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-27 20:00:24,737 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-27 20:00:24,737 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-27 20:00:24,738 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-27 20:00:24,738 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-27 20:00:24,738 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-27 20:00:24,738 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-27 20:00:24,739 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-27 20:00:24,740 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-27 20:00:24,740 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-27 20:00:24,740 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-27 20:00:24,740 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-27 20:00:24,741 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-27 20:00:24,741 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-27 20:00:24,741 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-27 20:00:24,742 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-27 20:00:24,742 INFO L130 BoogieDeclarations]: Found specification of procedure search_list [2020-10-27 20:00:24,742 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 20:00:24,742 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-27 20:00:24,742 INFO L130 BoogieDeclarations]: Found specification of procedure insert_list [2020-10-27 20:00:24,743 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-27 20:00:24,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 20:00:24,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-27 20:00:24,748 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 20:00:24,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 20:00:24,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 20:00:24,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 20:00:24,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 20:00:25,398 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 20:00:25,399 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-27 20:00:25,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:00:25 BoogieIcfgContainer [2020-10-27 20:00:25,402 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 20:00:25,406 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 20:00:25,406 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 20:00:25,411 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 20:00:25,411 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 08:00:23" (1/3) ... [2020-10-27 20:00:25,414 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@aa161ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:00:25, skipping insertion in model container [2020-10-27 20:00:25,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:00:24" (2/3) ... [2020-10-27 20:00:25,415 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@aa161ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:00:25, skipping insertion in model container [2020-10-27 20:00:25,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:00:25" (3/3) ... [2020-10-27 20:00:25,417 INFO L111 eAbstractionObserver]: Analyzing ICFG list_search-1.i [2020-10-27 20:00:25,432 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 20:00:25,439 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 20:00:25,457 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 20:00:25,504 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 20:00:25,504 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 20:00:25,504 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 20:00:25,504 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 20:00:25,504 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 20:00:25,505 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 20:00:25,505 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 20:00:25,505 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 20:00:25,534 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2020-10-27 20:00:25,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-27 20:00:25,547 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:00:25,548 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:00:25,548 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:00:25,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:00:25,560 INFO L82 PathProgramCache]: Analyzing trace with hash -1132079083, now seen corresponding path program 1 times [2020-10-27 20:00:25,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:00:25,572 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [82950358] [2020-10-27 20:00:25,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:00:25,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:00:25,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:26,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:26,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:00:26,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-27 20:00:26,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 20:00:26,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 903 [2020-10-27 20:00:26,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:00:26,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:00:26,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-27 20:00:26,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:00:26,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-27 20:00:26,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:00:26,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:00:26,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:26,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:00:26,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:00:26,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:00:26,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 20:00:26,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:00:26,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:00:26,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:00:26,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:00:26,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:00:26,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 20:00:26,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:00:26,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:26,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:00:26,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 20:00:26,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:00:26,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 20:00:26,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:00:26,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:00:26,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:00:26,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:00:26,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:00:26,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 20:00:26,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:00:26,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:26,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:00:26,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 20:00:26,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:00:26,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 20:00:26,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:00:26,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:00:26,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:00:26,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:00:26,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:00:27,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 20:00:27,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:00:27,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:27,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:00:27,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 20:00:27,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:00:27,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 20:00:27,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:00:27,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:00:27,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:00:27,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:00:27,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:00:27,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-27 20:00:27,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:00:27,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:27,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:00:27,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 20:00:27,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:00:27,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 20:00:27,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:00:27,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:00:27,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:00:27,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:00:27,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:00:27,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 20:00:27,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:00:27,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:27,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:00:27,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 20:00:27,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:00:27,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 20:00:27,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:00:27,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:00:27,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 20:00:27,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:00:27,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 20:00:27,093 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-27 20:00:27,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [82950358] [2020-10-27 20:00:27,097 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:00:27,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 20:00:27,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834567785] [2020-10-27 20:00:27,111 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 20:00:27,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:00:27,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 20:00:27,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 20:00:27,133 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 4 states. [2020-10-27 20:00:27,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:00:27,334 INFO L93 Difference]: Finished difference Result 65 states and 80 transitions. [2020-10-27 20:00:27,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 20:00:27,336 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-10-27 20:00:27,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:00:27,346 INFO L225 Difference]: With dead ends: 65 [2020-10-27 20:00:27,347 INFO L226 Difference]: Without dead ends: 35 [2020-10-27 20:00:27,350 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 20:00:27,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-27 20:00:27,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-10-27 20:00:27,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-27 20:00:27,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2020-10-27 20:00:27,400 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 47 [2020-10-27 20:00:27,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:00:27,402 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2020-10-27 20:00:27,403 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 20:00:27,403 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2020-10-27 20:00:27,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-27 20:00:27,405 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:00:27,406 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:00:27,406 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 20:00:27,406 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:00:27,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:00:27,407 INFO L82 PathProgramCache]: Analyzing trace with hash 1798844206, now seen corresponding path program 1 times [2020-10-27 20:00:27,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:00:27,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [809348678] [2020-10-27 20:00:27,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:00:27,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:00:27,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:27,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:30,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:00:30,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-27 20:00:30,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 20:00:30,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2743 [2020-10-27 20:00:30,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:00:30,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 20:00:30,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-27 20:00:30,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 20:00:30,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:00:30,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:00:30,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:00:30,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:30,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:00:30,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:00:30,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:00:30,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 20:00:30,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:00:30,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:00:30,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:00:30,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:00:30,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:00:30,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 20:00:30,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:00:30,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:30,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:00:30,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 20:00:30,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:00:30,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 20:00:30,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:00:30,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:00:30,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:00:30,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:00:30,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:00:30,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 20:00:30,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:00:30,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:30,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:00:30,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 20:00:30,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:00:30,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 20:00:30,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:00:30,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:00:30,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:00:30,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:00:30,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:00:30,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 20:00:30,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:00:30,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:30,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:00:30,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 20:00:30,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:00:30,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 20:00:30,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:00:30,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:00:30,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:00:30,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:00:30,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:00:30,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-27 20:00:30,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:00:30,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:30,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:00:30,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 20:00:30,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:00:30,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-27 20:00:30,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:00:30,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 20:00:30,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:00:30,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 20:00:30,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:00:30,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 20:00:30,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:00:30,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:30,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:00:30,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 20:00:30,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:00:30,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-27 20:00:30,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:00:30,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 20:00:30,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 20:00:30,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 20:00:30,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:00:30,688 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-27 20:00:30,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [809348678] [2020-10-27 20:00:30,689 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:00:30,689 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 20:00:30,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815051162] [2020-10-27 20:00:30,693 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 20:00:30,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:00:30,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 20:00:30,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-27 20:00:30,701 INFO L87 Difference]: Start difference. First operand 35 states and 40 transitions. Second operand 11 states. [2020-10-27 20:00:31,238 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 57 [2020-10-27 20:00:31,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:00:31,454 INFO L93 Difference]: Finished difference Result 53 states and 60 transitions. [2020-10-27 20:00:31,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 20:00:31,455 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 49 [2020-10-27 20:00:31,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:00:31,458 INFO L225 Difference]: With dead ends: 53 [2020-10-27 20:00:31,458 INFO L226 Difference]: Without dead ends: 42 [2020-10-27 20:00:31,460 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2020-10-27 20:00:31,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-27 20:00:31,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 38. [2020-10-27 20:00:31,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-27 20:00:31,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2020-10-27 20:00:31,472 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 49 [2020-10-27 20:00:31,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:00:31,473 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2020-10-27 20:00:31,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 20:00:31,473 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2020-10-27 20:00:31,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-27 20:00:31,475 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:00:31,476 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:00:31,476 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 20:00:31,476 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:00:31,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:00:31,477 INFO L82 PathProgramCache]: Analyzing trace with hash 2057009644, now seen corresponding path program 1 times [2020-10-27 20:00:31,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:00:31,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [698198207] [2020-10-27 20:00:31,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:00:31,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:00:31,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:31,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:31,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:33,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:00:33,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-27 20:00:33,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 20:00:33,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1743 [2020-10-27 20:00:33,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:00:33,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 20:00:33,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-27 20:00:33,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 20:00:33,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:00:33,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:00:33,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:00:33,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:33,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:00:33,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:00:33,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:00:33,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 20:00:33,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:00:33,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:00:33,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:00:33,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:00:33,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:00:33,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 20:00:33,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:00:33,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:33,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:00:33,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 20:00:33,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:00:33,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 20:00:33,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:00:33,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:00:33,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:00:33,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:00:33,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:00:33,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 20:00:33,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:00:33,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:33,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:00:33,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 20:00:33,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:00:33,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 20:00:33,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:00:33,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:00:33,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:00:33,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:00:33,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:00:33,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 20:00:33,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:00:33,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:33,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:00:33,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 20:00:33,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:00:33,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 20:00:33,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:00:33,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:00:33,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:00:33,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:00:33,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:00:33,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-27 20:00:33,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:00:33,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:33,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:00:33,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 20:00:33,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:00:33,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 20:00:33,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:00:33,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 20:00:33,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:00:33,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 20:00:33,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:00:33,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 20:00:33,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:00:33,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:33,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:33,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:00:33,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 20:00:33,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 20:00:33,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 20:00:33,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:00:33,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:00:33,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 20:00:33,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 20:00:33,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:00:33,562 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-27 20:00:33,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [698198207] [2020-10-27 20:00:33,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:00:33,563 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 20:00:33,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583178528] [2020-10-27 20:00:33,564 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 20:00:33,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:00:33,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 20:00:33,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-27 20:00:33,565 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand 9 states. [2020-10-27 20:00:34,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:00:34,103 INFO L93 Difference]: Finished difference Result 70 states and 85 transitions. [2020-10-27 20:00:34,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 20:00:34,103 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 49 [2020-10-27 20:00:34,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:00:34,105 INFO L225 Difference]: With dead ends: 70 [2020-10-27 20:00:34,105 INFO L226 Difference]: Without dead ends: 41 [2020-10-27 20:00:34,106 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2020-10-27 20:00:34,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-27 20:00:34,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2020-10-27 20:00:34,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-27 20:00:34,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 45 transitions. [2020-10-27 20:00:34,116 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 45 transitions. Word has length 49 [2020-10-27 20:00:34,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:00:34,117 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 45 transitions. [2020-10-27 20:00:34,117 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 20:00:34,117 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 45 transitions. [2020-10-27 20:00:34,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-27 20:00:34,119 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:00:34,119 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:00:34,119 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 20:00:34,120 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:00:34,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:00:34,120 INFO L82 PathProgramCache]: Analyzing trace with hash 568066902, now seen corresponding path program 1 times [2020-10-27 20:00:34,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:00:34,121 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1784322810] [2020-10-27 20:00:34,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:00:34,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:00:34,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:34,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:36,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:39,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:00:39,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 20:00:39,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 20:00:39,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-27 20:00:39,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:00:39,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 20:00:39,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-27 20:00:39,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-27 20:00:39,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 20:00:39,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:00:39,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:00:39,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:39,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:00:39,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:00:39,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:00:39,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 20:00:39,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:00:39,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:00:39,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:00:39,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:00:39,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:00:39,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 20:00:39,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:00:39,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:39,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:00:39,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 20:00:39,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:00:39,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 20:00:39,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:00:39,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:00:39,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:00:39,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:00:39,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:00:39,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 20:00:39,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:00:39,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:39,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:00:39,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 20:00:39,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:00:39,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 20:00:39,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:00:39,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:00:39,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:00:39,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:00:39,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 20:00:39,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 20:00:39,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:00:39,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:39,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:00:39,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 20:00:39,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:00:39,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-27 20:00:39,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:00:39,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 20:00:39,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:00:39,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 20:00:39,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:00:39,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-27 20:00:39,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:00:39,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:39,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:00:39,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 20:00:39,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:00:39,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-27 20:00:39,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:00:39,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 20:00:39,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 20:00:39,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 20:00:39,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 20:00:39,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 20:00:39,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:00:39,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:39,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:00:39,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 20:00:39,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:00:39,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-27 20:00:39,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:00:39,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 20:00:39,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 20:00:39,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 20:00:39,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:00:39,876 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 16 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-27 20:00:39,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1784322810] [2020-10-27 20:00:39,877 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 20:00:39,877 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-27 20:00:39,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060246873] [2020-10-27 20:00:39,878 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 20:00:39,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:00:39,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 20:00:39,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-10-27 20:00:39,879 INFO L87 Difference]: Start difference. First operand 40 states and 45 transitions. Second operand 16 states. [2020-10-27 20:00:40,112 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 63 [2020-10-27 20:00:40,934 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2020-10-27 20:00:41,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:00:41,740 INFO L93 Difference]: Finished difference Result 62 states and 69 transitions. [2020-10-27 20:00:41,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 20:00:41,741 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 52 [2020-10-27 20:00:41,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:00:41,744 INFO L225 Difference]: With dead ends: 62 [2020-10-27 20:00:41,744 INFO L226 Difference]: Without dead ends: 51 [2020-10-27 20:00:41,745 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=137, Invalid=733, Unknown=0, NotChecked=0, Total=870 [2020-10-27 20:00:41,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-27 20:00:41,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 43. [2020-10-27 20:00:41,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-27 20:00:41,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2020-10-27 20:00:41,757 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 52 [2020-10-27 20:00:41,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:00:41,757 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2020-10-27 20:00:41,757 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 20:00:41,758 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2020-10-27 20:00:41,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-27 20:00:41,759 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:00:41,760 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:00:41,760 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 20:00:41,760 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:00:41,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:00:41,760 INFO L82 PathProgramCache]: Analyzing trace with hash 826232340, now seen corresponding path program 1 times [2020-10-27 20:00:41,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:00:41,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [573988707] [2020-10-27 20:00:41,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:00:41,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:00:41,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:41,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:41,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:43,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:46,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:00:46,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 20:00:46,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 20:00:46,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4776 [2020-10-27 20:00:46,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:00:46,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 20:00:46,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-27 20:00:46,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 20:00:46,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 20:00:46,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:00:46,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:00:46,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:46,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:00:46,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:00:46,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:00:46,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 20:00:46,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:00:46,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:00:46,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:00:46,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:00:46,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 20:00:46,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 20:00:46,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:00:46,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:46,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:00:46,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 20:00:46,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:00:46,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 20:00:46,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:00:46,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:00:46,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:00:46,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:00:46,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 20:00:46,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 20:00:46,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:00:46,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:46,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:00:46,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 20:00:46,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:00:46,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 20:00:46,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:00:46,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:00:46,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:00:46,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:00:46,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 20:00:46,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 20:00:46,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:00:46,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:46,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:00:46,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 20:00:46,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:00:46,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 20:00:46,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:00:46,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:00:46,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:00:46,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:00:46,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:00:46,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-27 20:00:46,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:00:46,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:46,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:00:46,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 20:00:46,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:00:46,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 20:00:46,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:00:46,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 20:00:46,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:00:46,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 20:00:46,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:00:46,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 20:00:46,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:00:46,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:46,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:46,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:00:46,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 20:00:46,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 20:00:46,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 20:00:46,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:00:46,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 20:00:46,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 20:00:46,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 20:00:46,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:00:46,943 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-27 20:00:46,943 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [573988707] [2020-10-27 20:00:46,944 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 20:00:46,944 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 20:00:46,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873969003] [2020-10-27 20:00:46,946 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 20:00:46,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:00:46,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 20:00:46,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-27 20:00:46,948 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand 10 states. [2020-10-27 20:00:47,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:00:47,575 INFO L93 Difference]: Finished difference Result 63 states and 71 transitions. [2020-10-27 20:00:47,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 20:00:47,576 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 52 [2020-10-27 20:00:47,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:00:47,577 INFO L225 Difference]: With dead ends: 63 [2020-10-27 20:00:47,577 INFO L226 Difference]: Without dead ends: 49 [2020-10-27 20:00:47,578 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2020-10-27 20:00:47,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-27 20:00:47,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 46. [2020-10-27 20:00:47,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-27 20:00:47,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 51 transitions. [2020-10-27 20:00:47,590 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 51 transitions. Word has length 52 [2020-10-27 20:00:47,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:00:47,590 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 51 transitions. [2020-10-27 20:00:47,590 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 20:00:47,590 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 51 transitions. [2020-10-27 20:00:47,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-27 20:00:47,592 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:00:47,592 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:00:47,592 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 20:00:47,593 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:00:47,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:00:47,593 INFO L82 PathProgramCache]: Analyzing trace with hash 617209390, now seen corresponding path program 2 times [2020-10-27 20:00:47,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:00:47,594 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1989925839] [2020-10-27 20:00:47,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:00:47,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:00:47,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:47,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:51,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:00:51,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-27 20:00:51,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 20:00:51,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4301 [2020-10-27 20:00:51,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:00:51,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 20:00:51,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-27 20:00:51,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-27 20:00:51,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:00:52,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:00:52,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:00:52,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:52,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:00:52,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:00:52,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:00:52,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 20:00:52,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:00:52,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:00:52,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:00:52,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:00:52,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 20:00:52,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 20:00:52,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:00:52,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:52,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:00:52,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 20:00:52,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:00:52,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 20:00:52,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:00:52,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:00:52,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:00:52,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:00:52,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:00:52,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 20:00:52,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:00:52,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:52,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:00:52,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 20:00:52,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:00:52,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 20:00:52,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:00:52,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 20:00:52,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:00:52,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 20:00:52,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:00:52,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 20:00:52,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:00:52,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:52,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:00:52,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 20:00:52,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:00:52,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-27 20:00:52,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:00:52,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 20:00:52,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 20:00:52,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 20:00:52,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:00:52,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-27 20:00:52,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:00:52,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:52,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:00:52,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 20:00:52,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:00:52,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-27 20:00:52,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:00:52,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 20:00:52,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 20:00:52,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 20:00:52,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:00:52,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 20:00:52,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:00:52,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:52,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:00:52,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 20:00:52,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:00:52,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-27 20:00:52,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:00:52,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 20:00:52,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 20:00:52,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 20:00:52,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:00:53,062 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 12 proven. 21 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-27 20:00:53,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1989925839] [2020-10-27 20:00:53,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 20:00:53,064 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-27 20:00:53,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030769491] [2020-10-27 20:00:53,066 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-27 20:00:53,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:00:53,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-27 20:00:53,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=380, Unknown=0, NotChecked=0, Total=420 [2020-10-27 20:00:53,067 INFO L87 Difference]: Start difference. First operand 46 states and 51 transitions. Second operand 21 states. [2020-10-27 20:00:53,735 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 57 [2020-10-27 20:00:55,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:00:55,647 INFO L93 Difference]: Finished difference Result 68 states and 75 transitions. [2020-10-27 20:00:55,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 20:00:55,648 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 55 [2020-10-27 20:00:55,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:00:55,650 INFO L225 Difference]: With dead ends: 68 [2020-10-27 20:00:55,650 INFO L226 Difference]: Without dead ends: 57 [2020-10-27 20:00:55,654 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=153, Invalid=1107, Unknown=0, NotChecked=0, Total=1260 [2020-10-27 20:00:55,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-27 20:00:55,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 49. [2020-10-27 20:00:55,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-27 20:00:55,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 55 transitions. [2020-10-27 20:00:55,676 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 55 transitions. Word has length 55 [2020-10-27 20:00:55,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:00:55,677 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 55 transitions. [2020-10-27 20:00:55,677 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-27 20:00:55,677 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 55 transitions. [2020-10-27 20:00:55,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-27 20:00:55,682 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:00:55,683 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:00:55,683 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 20:00:55,684 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:00:55,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:00:55,684 INFO L82 PathProgramCache]: Analyzing trace with hash 875374828, now seen corresponding path program 2 times [2020-10-27 20:00:55,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:00:55,685 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1764153138] [2020-10-27 20:00:55,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:00:55,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:00:55,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:55,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:55,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:59,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:00:59,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-27 20:00:59,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 20:00:59,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3837 [2020-10-27 20:00:59,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:00:59,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 20:00:59,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-27 20:00:59,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-27 20:00:59,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:00:59,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:00:59,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:00:59,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:59,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:00:59,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:00:59,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:00:59,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 20:00:59,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:00:59,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:00:59,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:00:59,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:00:59,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:00:59,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 20:00:59,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:00:59,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:59,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:00:59,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 20:00:59,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:00:59,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 20:00:59,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:00:59,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:00:59,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:00:59,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:00:59,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:00:59,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 20:00:59,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:00:59,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:59,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:00:59,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 20:00:59,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:00:59,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 20:00:59,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:00:59,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:00:59,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:00:59,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:00:59,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:00:59,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 20:00:59,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:00:59,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:59,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:00:59,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 20:00:59,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:00:59,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 20:00:59,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:00:59,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:00:59,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:00:59,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 20:00:59,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:00:59,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-27 20:00:59,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:00:59,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:59,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:00:59,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 20:00:59,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:00:59,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-27 20:00:59,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:00:59,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 20:00:59,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 20:00:59,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 20:00:59,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:01:00,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 20:01:00,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:01:00,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:01:00,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:01:00,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:01:00,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 20:01:00,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 20:01:00,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-27 20:01:00,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:01:00,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 20:01:00,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 20:01:00,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 20:01:00,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:01:00,314 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 16 proven. 13 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-27 20:01:00,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1764153138] [2020-10-27 20:01:00,314 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 20:01:00,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-27 20:01:00,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484829124] [2020-10-27 20:01:00,316 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 20:01:00,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:01:00,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 20:01:00,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2020-10-27 20:01:00,322 INFO L87 Difference]: Start difference. First operand 49 states and 55 transitions. Second operand 16 states. [2020-10-27 20:01:01,440 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 62 [2020-10-27 20:01:02,218 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 73 [2020-10-27 20:01:02,443 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 76 [2020-10-27 20:01:02,675 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 77 [2020-10-27 20:01:02,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:01:02,851 INFO L93 Difference]: Finished difference Result 73 states and 81 transitions. [2020-10-27 20:01:02,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-27 20:01:02,852 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 55 [2020-10-27 20:01:02,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:01:02,854 INFO L225 Difference]: With dead ends: 73 [2020-10-27 20:01:02,854 INFO L226 Difference]: Without dead ends: 59 [2020-10-27 20:01:02,855 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=179, Invalid=943, Unknown=0, NotChecked=0, Total=1122 [2020-10-27 20:01:02,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-27 20:01:02,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 56. [2020-10-27 20:01:02,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-27 20:01:02,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 61 transitions. [2020-10-27 20:01:02,869 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 61 transitions. Word has length 55 [2020-10-27 20:01:02,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:01:02,869 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 61 transitions. [2020-10-27 20:01:02,869 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 20:01:02,869 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 61 transitions. [2020-10-27 20:01:02,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-27 20:01:02,870 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:01:02,871 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:01:02,871 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 20:01:02,871 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:01:02,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:01:02,872 INFO L82 PathProgramCache]: Analyzing trace with hash 37221462, now seen corresponding path program 3 times [2020-10-27 20:01:02,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:01:02,872 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [599337775] [2020-10-27 20:01:02,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:01:02,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:01:02,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:01:03,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:01:03,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-27 20:01:03,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:01:03,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 312 [2020-10-27 20:01:03,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:01:03,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 20:01:03,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 20:01:03,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 20:01:03,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:01:03,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:01:03,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:01:03,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:01:03,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:01:03,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:01:03,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:01:03,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 20:01:03,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:01:03,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:01:03,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:01:03,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 20:01:03,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:01:03,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 20:01:03,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:01:03,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:01:03,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:01:03,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 20:01:03,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:01:03,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 20:01:03,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:01:03,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:01:03,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 20:01:03,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 20:01:03,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:01:03,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 20:01:03,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:01:03,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:01:03,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:01:03,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 20:01:03,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:01:03,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 20:01:03,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:01:03,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:01:03,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 20:01:03,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:01:03,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:01:03,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 20:01:03,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:01:03,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:01:03,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:01:03,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 20:01:03,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:01:03,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 20:01:03,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:01:03,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:01:03,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 20:01:03,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:01:03,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:01:03,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-27 20:01:03,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:01:03,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:01:03,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:01:03,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 20:01:03,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:01:03,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 20:01:03,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:01:03,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:01:03,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 20:01:03,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:01:03,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:01:03,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 20:01:03,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:01:03,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:01:03,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:01:03,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-27 20:01:03,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:01:03,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 20:01:03,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:01:03,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:01:03,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-27 20:01:03,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:01:03,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:01:03,470 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-27 20:01:03,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [599337775] [2020-10-27 20:01:03,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 20:01:03,471 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 20:01:03,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813104701] [2020-10-27 20:01:03,471 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 20:01:03,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:01:03,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 20:01:03,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 20:01:03,472 INFO L87 Difference]: Start difference. First operand 56 states and 61 transitions. Second operand 7 states. [2020-10-27 20:01:03,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:01:03,743 INFO L93 Difference]: Finished difference Result 94 states and 100 transitions. [2020-10-27 20:01:03,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 20:01:03,744 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 58 [2020-10-27 20:01:03,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:01:03,746 INFO L225 Difference]: With dead ends: 94 [2020-10-27 20:01:03,746 INFO L226 Difference]: Without dead ends: 54 [2020-10-27 20:01:03,747 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-27 20:01:03,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-27 20:01:03,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-10-27 20:01:03,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-27 20:01:03,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 56 transitions. [2020-10-27 20:01:03,759 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 56 transitions. Word has length 58 [2020-10-27 20:01:03,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:01:03,759 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 56 transitions. [2020-10-27 20:01:03,759 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 20:01:03,759 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 56 transitions. [2020-10-27 20:01:03,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-27 20:01:03,760 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:01:03,760 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:01:03,761 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 20:01:03,761 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:01:03,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:01:03,761 INFO L82 PathProgramCache]: Analyzing trace with hash 518301720, now seen corresponding path program 1 times [2020-10-27 20:01:03,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:01:03,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1030058845] [2020-10-27 20:01:03,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:01:03,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 20:01:03,797 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 20:01:03,797 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 20:01:03,802 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 20:01:03,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 08:01:03 BoogieIcfgContainer [2020-10-27 20:01:03,824 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 20:01:03,826 INFO L168 Benchmark]: Toolchain (without parser) took 39917.27 ms. Allocated memory was 151.0 MB in the beginning and 631.2 MB in the end (delta: 480.2 MB). Free memory was 120.5 MB in the beginning and 259.9 MB in the end (delta: -139.4 MB). Peak memory consumption was 341.4 MB. Max. memory is 8.0 GB. [2020-10-27 20:01:03,827 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory is still 106.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 20:01:03,828 INFO L168 Benchmark]: CACSL2BoogieTranslator took 553.89 ms. Allocated memory is still 151.0 MB. Free memory was 120.1 MB in the beginning and 97.8 MB in the end (delta: 22.3 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. [2020-10-27 20:01:03,831 INFO L168 Benchmark]: Boogie Preprocessor took 134.99 ms. Allocated memory is still 151.0 MB. Free memory was 97.8 MB in the beginning and 95.4 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-27 20:01:03,832 INFO L168 Benchmark]: RCFGBuilder took 792.04 ms. Allocated memory is still 151.0 MB. Free memory was 95.1 MB in the beginning and 130.1 MB in the end (delta: -35.0 MB). Peak memory consumption was 49.9 MB. Max. memory is 8.0 GB. [2020-10-27 20:01:03,833 INFO L168 Benchmark]: TraceAbstraction took 38418.55 ms. Allocated memory was 151.0 MB in the beginning and 631.2 MB in the end (delta: 480.2 MB). Free memory was 129.5 MB in the beginning and 259.9 MB in the end (delta: -130.5 MB). Peak memory consumption was 349.2 MB. Max. memory is 8.0 GB. [2020-10-27 20:01:03,839 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory is still 106.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 553.89 ms. Allocated memory is still 151.0 MB. Free memory was 120.1 MB in the beginning and 97.8 MB in the end (delta: 22.3 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 134.99 ms. Allocated memory is still 151.0 MB. Free memory was 97.8 MB in the beginning and 95.4 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 792.04 ms. Allocated memory is still 151.0 MB. Free memory was 95.1 MB in the beginning and 130.1 MB in the end (delta: -35.0 MB). Peak memory consumption was 49.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 38418.55 ms. Allocated memory was 151.0 MB in the beginning and 631.2 MB in the end (delta: 480.2 MB). Free memory was 129.5 MB in the beginning and 259.9 MB in the end (delta: -130.5 MB). Peak memory consumption was 349.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 12]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L533] mlist *head; [L554] int i; [L555] mlist *mylist, *temp; [L556] CALL insert_list(mylist,2) [L542] l = (mlist*)malloc(sizeof(mlist)) [L543] l->key = k [L544] COND TRUE head==((void *)0) [L545] l->next = ((void *)0) [L550] head = l [L551] return 0; [L556] RET insert_list(mylist,2) [L557] CALL insert_list(mylist,5) [L542] l = (mlist*)malloc(sizeof(mlist)) [L543] l->key = k [L544] COND FALSE !(head==((void *)0)) [L547] l->key = k [L548] l->next = head [L550] head = l [L551] return 0; [L557] RET insert_list(mylist,5) [L558] CALL insert_list(mylist,1) [L542] l = (mlist*)malloc(sizeof(mlist)) [L543] l->key = k [L544] COND FALSE !(head==((void *)0)) [L547] l->key = k [L548] l->next = head [L550] head = l [L551] return 0; [L558] RET insert_list(mylist,1) [L559] CALL insert_list(mylist,3) [L542] l = (mlist*)malloc(sizeof(mlist)) [L543] l->key = k [L544] COND FALSE !(head==((void *)0)) [L547] l->key = k [L548] l->next = head [L550] head = l [L551] return 0; [L559] RET insert_list(mylist,3) [L560] CALL, EXPR search_list(head,2) [L535] l = head [L536] l!=((void *)0) && l->key!=k [L536] EXPR l->key [L536] l!=((void *)0) && l->key!=k [L536] COND TRUE l!=((void *)0) && l->key!=k [L537] EXPR l->next [L537] l = l->next [L536] l!=((void *)0) && l->key!=k [L536] EXPR l->key [L536] l!=((void *)0) && l->key!=k [L536] COND TRUE l!=((void *)0) && l->key!=k [L537] EXPR l->next [L537] l = l->next [L536] l!=((void *)0) && l->key!=k [L536] EXPR l->key [L536] l!=((void *)0) && l->key!=k [L536] COND TRUE l!=((void *)0) && l->key!=k [L537] EXPR l->next [L537] l = l->next [L536] l!=((void *)0) && l->key!=k [L536] EXPR l->key [L536] l!=((void *)0) && l->key!=k [L536] COND FALSE !(l!=((void *)0) && l->key!=k) [L539] return l; [L560] RET, EXPR search_list(head,2) [L560] temp = search_list(head,2) [L561] EXPR temp->key [L561] CALL __VERIFIER_assert(temp->key==1) [L14] COND TRUE !(cond) [L15] CALL reach_error() [L12] COND FALSE !(0) [L12] __assert_fail ("0", "list_search-1.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 12 procedures, 61 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 38.3s, OverallIterations: 9, TraceHistogramMax: 4, AutomataDifference: 9.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 239 SDtfs, 523 SDslu, 557 SDs, 0 SdLazy, 2073 SolverSat, 307 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 252 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 387 ImplicationChecksByTransitivity, 7.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=56occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 27 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 27.9s InterpolantComputationTime, 475 NumberOfCodeBlocks, 475 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 409 ConstructedInterpolants, 0 QuantifiedInterpolants, 222196 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 226/282 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...