/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/list-simple/sll2n_append_unequal.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 09:31:12,798 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 09:31:12,803 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 09:31:12,862 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 09:31:12,863 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 09:31:12,870 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 09:31:12,872 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 09:31:12,877 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 09:31:12,881 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 09:31:12,887 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 09:31:12,889 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 09:31:12,890 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 09:31:12,891 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 09:31:12,894 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 09:31:12,896 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 09:31:12,898 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 09:31:12,899 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 09:31:12,903 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 09:31:12,910 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 09:31:12,919 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 09:31:12,921 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 09:31:12,923 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 09:31:12,925 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 09:31:12,928 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 09:31:12,937 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 09:31:12,937 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 09:31:12,937 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 09:31:12,940 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 09:31:12,941 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 09:31:12,942 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 09:31:12,942 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 09:31:12,943 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 09:31:12,945 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 09:31:12,946 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 09:31:12,947 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 09:31:12,948 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 09:31:12,948 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 09:31:12,949 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 09:31:12,949 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 09:31:12,950 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 09:31:12,951 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 09:31:12,959 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 09:31:13,010 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 09:31:13,011 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 09:31:13,016 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 09:31:13,016 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 09:31:13,017 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 09:31:13,018 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 09:31:13,018 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 09:31:13,019 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 09:31:13,019 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 09:31:13,019 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 09:31:13,020 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 09:31:13,020 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 09:31:13,021 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 09:31:13,032 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 09:31:13,032 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 09:31:13,032 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 09:31:13,033 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 09:31:13,033 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 09:31:13,033 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 09:31:13,035 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 09:31:13,035 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 09:31:13,041 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:31:13,041 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 09:31:13,041 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 09:31:13,041 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 09:31:13,042 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 09:31:13,042 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 09:31:13,042 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 09:31:13,042 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 09:31:13,042 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 09:31:13,459 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 09:31:13,515 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 09:31:13,519 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 09:31:13,520 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 09:31:13,521 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 09:31:13,523 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/sll2n_append_unequal.i [2020-10-29 09:31:13,601 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6eecdd24a/73692b751cab4e3d805b738bc96c8586/FLAG042512723 [2020-10-29 09:31:14,365 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 09:31:14,366 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-simple/sll2n_append_unequal.i [2020-10-29 09:31:14,382 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6eecdd24a/73692b751cab4e3d805b738bc96c8586/FLAG042512723 [2020-10-29 09:31:14,640 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6eecdd24a/73692b751cab4e3d805b738bc96c8586 [2020-10-29 09:31:14,644 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 09:31:14,652 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 09:31:14,656 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 09:31:14,657 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 09:31:14,661 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 09:31:14,663 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:31:14" (1/1) ... [2020-10-29 09:31:14,668 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@836eb57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:31:14, skipping insertion in model container [2020-10-29 09:31:14,669 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:31:14" (1/1) ... [2020-10-29 09:31:14,679 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 09:31:14,746 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 09:31:15,119 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:31:15,130 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 09:31:15,224 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:31:15,324 INFO L208 MainTranslator]: Completed translation [2020-10-29 09:31:15,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:31:15 WrapperNode [2020-10-29 09:31:15,327 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 09:31:15,328 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 09:31:15,328 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 09:31:15,328 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 09:31:15,345 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:31:15" (1/1) ... [2020-10-29 09:31:15,346 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:31:15" (1/1) ... [2020-10-29 09:31:15,362 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:31:15" (1/1) ... [2020-10-29 09:31:15,363 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:31:15" (1/1) ... [2020-10-29 09:31:15,382 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:31:15" (1/1) ... [2020-10-29 09:31:15,387 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:31:15" (1/1) ... [2020-10-29 09:31:15,391 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:31:15" (1/1) ... [2020-10-29 09:31:15,399 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 09:31:15,400 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 09:31:15,400 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 09:31:15,400 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 09:31:15,401 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:31:15" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:31:15,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 09:31:15,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 09:31:15,493 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 09:31:15,493 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-29 09:31:15,493 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-29 09:31:15,493 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-29 09:31:15,494 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2020-10-29 09:31:15,494 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2020-10-29 09:31:15,494 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2020-10-29 09:31:15,494 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_append [2020-10-29 09:31:15,494 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 09:31:15,495 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 09:31:15,495 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 09:31:15,495 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-29 09:31:15,495 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-29 09:31:15,496 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 09:31:15,496 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 09:31:15,496 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-29 09:31:15,496 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-29 09:31:15,496 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-29 09:31:15,497 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-29 09:31:15,497 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-29 09:31:15,497 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-29 09:31:15,497 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-29 09:31:15,497 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-29 09:31:15,497 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-29 09:31:15,498 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-29 09:31:15,498 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-29 09:31:15,498 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-29 09:31:15,498 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-29 09:31:15,498 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-29 09:31:15,499 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-29 09:31:15,499 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-29 09:31:15,499 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-29 09:31:15,499 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-29 09:31:15,499 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-29 09:31:15,500 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-29 09:31:15,500 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-29 09:31:15,500 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-29 09:31:15,500 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-29 09:31:15,500 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-29 09:31:15,501 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-29 09:31:15,501 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-29 09:31:15,501 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-29 09:31:15,501 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-29 09:31:15,501 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-29 09:31:15,501 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-29 09:31:15,502 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-29 09:31:15,502 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-29 09:31:15,502 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-29 09:31:15,502 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-29 09:31:15,502 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-29 09:31:15,503 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-29 09:31:15,503 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-29 09:31:15,503 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-29 09:31:15,503 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-29 09:31:15,503 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-29 09:31:15,504 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-29 09:31:15,504 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-29 09:31:15,504 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-29 09:31:15,504 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-29 09:31:15,505 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-29 09:31:15,505 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-29 09:31:15,505 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-29 09:31:15,505 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-29 09:31:15,505 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-29 09:31:15,505 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-29 09:31:15,506 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-29 09:31:15,506 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-29 09:31:15,506 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-29 09:31:15,506 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-29 09:31:15,506 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-29 09:31:15,507 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-29 09:31:15,507 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-29 09:31:15,507 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-29 09:31:15,507 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-29 09:31:15,507 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-29 09:31:15,508 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-29 09:31:15,508 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-29 09:31:15,508 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-29 09:31:15,508 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-29 09:31:15,508 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 09:31:15,509 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-29 09:31:15,509 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-29 09:31:15,509 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-29 09:31:15,509 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-29 09:31:15,509 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-29 09:31:15,510 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-29 09:31:15,510 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-29 09:31:15,510 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-29 09:31:15,510 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-29 09:31:15,510 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-29 09:31:15,510 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-29 09:31:15,511 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-29 09:31:15,511 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-29 09:31:15,511 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-29 09:31:15,511 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-29 09:31:15,511 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-29 09:31:15,512 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-29 09:31:15,512 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-29 09:31:15,512 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-29 09:31:15,512 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-29 09:31:15,512 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-29 09:31:15,512 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-29 09:31:15,513 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-29 09:31:15,513 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-29 09:31:15,513 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-29 09:31:15,513 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-29 09:31:15,513 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-29 09:31:15,513 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-29 09:31:15,514 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-29 09:31:15,514 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-29 09:31:15,514 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-29 09:31:15,514 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-29 09:31:15,514 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-29 09:31:15,515 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-29 09:31:15,515 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-29 09:31:15,515 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-29 09:31:15,515 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-29 09:31:15,515 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-29 09:31:15,515 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-29 09:31:15,516 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-29 09:31:15,516 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2020-10-29 09:31:15,516 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-29 09:31:15,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-29 09:31:15,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 09:31:15,517 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2020-10-29 09:31:15,517 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2020-10-29 09:31:15,517 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-29 09:31:15,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 09:31:15,517 INFO L130 BoogieDeclarations]: Found specification of procedure sll_append [2020-10-29 09:31:15,517 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 09:31:15,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-29 09:31:15,518 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 09:31:15,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 09:31:15,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 09:31:15,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 09:31:16,172 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-29 09:31:16,450 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 09:31:16,450 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-29 09:31:16,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:31:16 BoogieIcfgContainer [2020-10-29 09:31:16,453 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 09:31:16,455 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 09:31:16,455 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 09:31:16,459 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 09:31:16,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 09:31:14" (1/3) ... [2020-10-29 09:31:16,461 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e03b0e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:31:16, skipping insertion in model container [2020-10-29 09:31:16,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:31:15" (2/3) ... [2020-10-29 09:31:16,461 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e03b0e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:31:16, skipping insertion in model container [2020-10-29 09:31:16,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:31:16" (3/3) ... [2020-10-29 09:31:16,463 INFO L111 eAbstractionObserver]: Analyzing ICFG sll2n_append_unequal.i [2020-10-29 09:31:16,476 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 09:31:16,482 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 09:31:16,496 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 09:31:16,524 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 09:31:16,524 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 09:31:16,524 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 09:31:16,524 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 09:31:16,524 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 09:31:16,524 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 09:31:16,525 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 09:31:16,525 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 09:31:16,544 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states. [2020-10-29 09:31:16,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-29 09:31:16,552 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:31:16,553 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:31:16,553 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:31:16,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:31:16,560 INFO L82 PathProgramCache]: Analyzing trace with hash 871575057, now seen corresponding path program 1 times [2020-10-29 09:31:16,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:31:16,570 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1745922786] [2020-10-29 09:31:16,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:31:16,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:16,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:17,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:17,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-29 09:31:17,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:31:17,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 563 [2020-10-29 09:31:17,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:17,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:17,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:31:17,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:31:17,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:31:17,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 09:31:17,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:31:17,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:17,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:17,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:17,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:31:17,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:31:17,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 09:31:17,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:17,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:17,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:31:17,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:31:17,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:31:17,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:31:17,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:31:17,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:17,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:17,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:17,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:31:17,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:31:17,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-29 09:31:17,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:17,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:17,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:31:17,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 09:31:17,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 09:31:17,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:31:17,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-29 09:31:17,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:17,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:17,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:17,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 09:31:17,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:31:17,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 09:31:17,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:17,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:17,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:31:17,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 09:31:17,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:31:17,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:31:17,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:31:17,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:17,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:17,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:17,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:31:17,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:31:17,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 09:31:17,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:17,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:17,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:31:17,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:31:17,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:31:17,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:31:17,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:31:17,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1745922786] [2020-10-29 09:31:17,703 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:31:17,703 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 09:31:17,704 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358487687] [2020-10-29 09:31:17,709 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 09:31:17,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:31:17,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 09:31:17,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-29 09:31:17,727 INFO L87 Difference]: Start difference. First operand 59 states. Second operand 7 states. [2020-10-29 09:31:18,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:31:18,113 INFO L93 Difference]: Finished difference Result 113 states and 148 transitions. [2020-10-29 09:31:18,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 09:31:18,115 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 31 [2020-10-29 09:31:18,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:31:18,125 INFO L225 Difference]: With dead ends: 113 [2020-10-29 09:31:18,125 INFO L226 Difference]: Without dead ends: 47 [2020-10-29 09:31:18,129 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-29 09:31:18,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-29 09:31:18,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 44. [2020-10-29 09:31:18,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-29 09:31:18,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2020-10-29 09:31:18,182 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 31 [2020-10-29 09:31:18,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:31:18,183 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2020-10-29 09:31:18,183 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 09:31:18,183 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2020-10-29 09:31:18,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-29 09:31:18,186 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:31:18,186 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:31:18,186 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 09:31:18,187 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:31:18,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:31:18,188 INFO L82 PathProgramCache]: Analyzing trace with hash -1746897243, now seen corresponding path program 1 times [2020-10-29 09:31:18,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:31:18,188 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1989362181] [2020-10-29 09:31:18,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:31:18,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:18,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:18,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:18,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:22,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:22,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-29 09:31:22,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:31:22,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3962 [2020-10-29 09:31:22,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:22,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:22,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 09:31:22,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:31:22,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-29 09:31:22,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:31:22,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:31:22,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:22,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:22,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:22,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:31:22,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:31:22,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:31:22,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:22,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:22,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:31:22,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:31:22,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:31:22,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:31:22,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:31:22,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:22,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:22,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:22,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-29 09:31:22,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:31:22,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-29 09:31:22,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:22,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:22,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 09:31:22,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:31:22,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 09:31:22,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:31:22,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 09:31:22,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:22,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:22,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:22,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:31:22,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:31:22,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 09:31:22,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:22,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:22,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:31:22,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:31:22,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:31:22,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 09:31:22,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-29 09:31:22,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:22,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:22,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:22,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 09:31:22,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:31:22,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-29 09:31:22,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:22,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:22,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 09:31:22,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:31:22,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 09:31:22,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:31:22,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:31:22,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:22,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:22,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:22,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:31:22,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:31:22,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-29 09:31:22,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:22,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:22,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:31:22,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:31:22,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:31:22,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:31:22,976 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 09:31:22,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1989362181] [2020-10-29 09:31:22,977 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:31:22,977 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 09:31:22,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796058210] [2020-10-29 09:31:22,979 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 09:31:22,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:31:22,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 09:31:22,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2020-10-29 09:31:22,980 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand 18 states. [2020-10-29 09:31:24,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:31:24,144 INFO L93 Difference]: Finished difference Result 60 states and 71 transitions. [2020-10-29 09:31:24,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 09:31:24,145 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 40 [2020-10-29 09:31:24,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:31:24,147 INFO L225 Difference]: With dead ends: 60 [2020-10-29 09:31:24,147 INFO L226 Difference]: Without dead ends: 46 [2020-10-29 09:31:24,149 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=88, Invalid=668, Unknown=0, NotChecked=0, Total=756 [2020-10-29 09:31:24,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-29 09:31:24,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2020-10-29 09:31:24,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-29 09:31:24,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 50 transitions. [2020-10-29 09:31:24,161 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 50 transitions. Word has length 40 [2020-10-29 09:31:24,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:31:24,161 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 50 transitions. [2020-10-29 09:31:24,161 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 09:31:24,162 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 50 transitions. [2020-10-29 09:31:24,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-29 09:31:24,163 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:31:24,164 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:31:24,164 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 09:31:24,164 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:31:24,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:31:24,165 INFO L82 PathProgramCache]: Analyzing trace with hash 1645526376, now seen corresponding path program 1 times [2020-10-29 09:31:24,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:31:24,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [275653260] [2020-10-29 09:31:24,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:31:24,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:24,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:24,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:24,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:24,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:25,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:29,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:29,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-29 09:31:29,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 09:31:29,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 09:31:29,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:29,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:29,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 09:31:29,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:31:29,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-29 09:31:29,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 09:31:29,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:31:29,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:29,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:29,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:29,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:31:29,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:31:29,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:31:29,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:29,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:29,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:31:29,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:31:29,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:31:29,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:31:29,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:31:29,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:29,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:29,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:29,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:29,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-29 09:31:29,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:31:29,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-29 09:31:29,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:29,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:29,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:31:29,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:31:29,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 09:31:29,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:31:29,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 09:31:29,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:29,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:29,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:29,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:31:29,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:31:29,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 09:31:29,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:29,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:29,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:31:29,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:31:29,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 09:31:29,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:31:29,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-29 09:31:29,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:29,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:29,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:30,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:30,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-29 09:31:30,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:31:30,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 483 [2020-10-29 09:31:30,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:30,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:30,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 09:31:30,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:31:30,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 09:31:30,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:31:30,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:31:30,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:30,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:30,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:30,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:31:30,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:31:30,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 09:31:30,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:30,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:30,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:31:30,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:31:30,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 09:31:30,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:31:30,761 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 09:31:30,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [275653260] [2020-10-29 09:31:30,762 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:31:30,762 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-29 09:31:30,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750837724] [2020-10-29 09:31:30,763 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-29 09:31:30,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:31:30,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-29 09:31:30,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2020-10-29 09:31:30,765 INFO L87 Difference]: Start difference. First operand 44 states and 50 transitions. Second operand 21 states. [2020-10-29 09:31:32,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:31:32,116 INFO L93 Difference]: Finished difference Result 73 states and 88 transitions. [2020-10-29 09:31:32,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 09:31:32,117 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 43 [2020-10-29 09:31:32,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:31:32,122 INFO L225 Difference]: With dead ends: 73 [2020-10-29 09:31:32,122 INFO L226 Difference]: Without dead ends: 68 [2020-10-29 09:31:32,123 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=113, Invalid=1009, Unknown=0, NotChecked=0, Total=1122 [2020-10-29 09:31:32,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-29 09:31:32,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 51. [2020-10-29 09:31:32,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-29 09:31:32,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 58 transitions. [2020-10-29 09:31:32,137 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 58 transitions. Word has length 43 [2020-10-29 09:31:32,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:31:32,138 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 58 transitions. [2020-10-29 09:31:32,138 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-29 09:31:32,138 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 58 transitions. [2020-10-29 09:31:32,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-29 09:31:32,140 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:31:32,140 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:31:32,140 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 09:31:32,140 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:31:32,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:31:32,141 INFO L82 PathProgramCache]: Analyzing trace with hash -1572583676, now seen corresponding path program 1 times [2020-10-29 09:31:32,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:31:32,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [800668144] [2020-10-29 09:31:32,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:31:32,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:32,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:32,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:32,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:33,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:34,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:35,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:37,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:37,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-29 09:31:37,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 09:31:37,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 09:31:37,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:37,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:37,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 09:31:37,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:31:37,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-29 09:31:37,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:31:37,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:31:37,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:37,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:37,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:37,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:31:37,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:31:37,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 09:31:37,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:37,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:37,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:31:37,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:31:37,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:31:37,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:31:37,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:31:37,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:37,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:37,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:37,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-29 09:31:37,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:31:37,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-29 09:31:37,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:37,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:37,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 09:31:37,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:31:37,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 09:31:37,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:31:37,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 09:31:37,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:37,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:37,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:37,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:31:37,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:31:37,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-29 09:31:37,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:37,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:37,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:31:37,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:31:37,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 09:31:37,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:31:38,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-29 09:31:38,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:38,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:38,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:38,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:39,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:39,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-29 09:31:39,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:31:39,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1108 [2020-10-29 09:31:39,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:39,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:39,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 09:31:39,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:31:39,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 09:31:39,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:31:39,671 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2020-10-29 09:31:39,918 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 48 [2020-10-29 09:31:40,204 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 47 [2020-10-29 09:31:41,790 WARN L193 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 165 DAG size of output: 131 [2020-10-29 09:31:41,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:31:41,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:41,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:41,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:41,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:31:41,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:31:41,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-29 09:31:41,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:41,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:41,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:31:41,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:31:41,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:31:41,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:31:42,458 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 42 [2020-10-29 09:31:42,502 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 09:31:42,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [800668144] [2020-10-29 09:31:42,503 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:31:42,503 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-29 09:31:42,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19567593] [2020-10-29 09:31:42,504 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-29 09:31:42,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:31:42,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-29 09:31:42,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=489, Unknown=0, NotChecked=0, Total=552 [2020-10-29 09:31:42,506 INFO L87 Difference]: Start difference. First operand 51 states and 58 transitions. Second operand 24 states. [2020-10-29 09:31:43,263 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-10-29 09:31:43,499 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-10-29 09:31:44,237 WARN L193 SmtUtils]: Spent 529.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-29 09:31:45,138 WARN L193 SmtUtils]: Spent 666.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 09:31:46,063 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2020-10-29 09:31:46,343 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2020-10-29 09:31:46,970 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 52 [2020-10-29 09:31:47,190 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 54 [2020-10-29 09:31:47,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:31:47,540 INFO L93 Difference]: Finished difference Result 83 states and 101 transitions. [2020-10-29 09:31:47,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-29 09:31:47,542 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 45 [2020-10-29 09:31:47,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:31:47,544 INFO L225 Difference]: With dead ends: 83 [2020-10-29 09:31:47,544 INFO L226 Difference]: Without dead ends: 79 [2020-10-29 09:31:47,545 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=159, Invalid=1247, Unknown=0, NotChecked=0, Total=1406 [2020-10-29 09:31:47,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-29 09:31:47,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 67. [2020-10-29 09:31:47,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-29 09:31:47,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 80 transitions. [2020-10-29 09:31:47,565 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 80 transitions. Word has length 45 [2020-10-29 09:31:47,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:31:47,566 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 80 transitions. [2020-10-29 09:31:47,566 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-29 09:31:47,566 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 80 transitions. [2020-10-29 09:31:47,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-29 09:31:47,568 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:31:47,568 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:31:47,568 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 09:31:47,569 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:31:47,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:31:47,569 INFO L82 PathProgramCache]: Analyzing trace with hash 1500120291, now seen corresponding path program 1 times [2020-10-29 09:31:47,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:31:47,570 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [436200116] [2020-10-29 09:31:47,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:31:47,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:47,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:47,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:48,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:49,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:50,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:52,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:52,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:52,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-29 09:31:52,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 09:31:52,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 09:31:52,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:52,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:52,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 09:31:52,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:31:52,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-29 09:31:52,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:31:52,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:31:52,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:52,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:52,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:52,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:31:52,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:31:52,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:31:52,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:52,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:52,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:31:52,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:31:52,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:31:52,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:31:52,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:31:52,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:52,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:52,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:52,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-29 09:31:52,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:31:52,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-29 09:31:52,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:52,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:52,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 09:31:52,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:31:52,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 09:31:52,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:31:52,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 09:31:52,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:52,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:52,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:52,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:31:52,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:31:52,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-29 09:31:52,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:52,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:52,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:31:52,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:31:52,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 09:31:52,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:31:52,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-29 09:31:52,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:52,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:53,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:53,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-29 09:31:53,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:31:53,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-29 09:31:53,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:53,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:53,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 09:31:53,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:31:53,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 09:31:53,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:31:53,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:31:53,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:53,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:53,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:31:53,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:31:53,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:31:53,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-29 09:31:53,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:31:53,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:31:53,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:31:53,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:31:53,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:31:53,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:31:53,799 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 09:31:53,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [436200116] [2020-10-29 09:31:53,799 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:31:53,800 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-29 09:31:53,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993673793] [2020-10-29 09:31:53,800 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-29 09:31:53,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:31:53,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-29 09:31:53,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=336, Unknown=0, NotChecked=0, Total=380 [2020-10-29 09:31:53,802 INFO L87 Difference]: Start difference. First operand 67 states and 80 transitions. Second operand 20 states. [2020-10-29 09:31:54,980 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 38 [2020-10-29 09:31:55,297 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 54 [2020-10-29 09:31:55,629 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 69 [2020-10-29 09:31:55,882 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 58 [2020-10-29 09:31:56,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:31:56,202 INFO L93 Difference]: Finished difference Result 81 states and 98 transitions. [2020-10-29 09:31:56,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 09:31:56,207 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 45 [2020-10-29 09:31:56,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:31:56,209 INFO L225 Difference]: With dead ends: 81 [2020-10-29 09:31:56,211 INFO L226 Difference]: Without dead ends: 66 [2020-10-29 09:31:56,212 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=113, Invalid=879, Unknown=0, NotChecked=0, Total=992 [2020-10-29 09:31:56,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-29 09:31:56,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2020-10-29 09:31:56,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-29 09:31:56,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 76 transitions. [2020-10-29 09:31:56,244 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 76 transitions. Word has length 45 [2020-10-29 09:31:56,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:31:56,244 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 76 transitions. [2020-10-29 09:31:56,244 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-29 09:31:56,244 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 76 transitions. [2020-10-29 09:31:56,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-29 09:31:56,251 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:31:56,251 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:31:56,252 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 09:31:56,252 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:31:56,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:31:56,253 INFO L82 PathProgramCache]: Analyzing trace with hash -1558674867, now seen corresponding path program 1 times [2020-10-29 09:31:56,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:31:56,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [612111243] [2020-10-29 09:31:56,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:31:56,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:31:56,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:56,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:56,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:56,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:57,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:31:57,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:01,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:01,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-29 09:32:01,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 09:32:01,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 09:32:01,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:01,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:01,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 09:32:01,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:32:01,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-29 09:32:01,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:32:01,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:32:01,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:01,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:01,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:01,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:32:01,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:32:01,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:32:01,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:01,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:01,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:32:01,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:32:01,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:32:01,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:01,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:32:01,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:01,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:01,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:01,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:01,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-29 09:32:01,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:32:01,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-29 09:32:01,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:01,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:01,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:32:01,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:32:01,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 09:32:01,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:01,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 09:32:01,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:01,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:01,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:01,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:32:01,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:32:01,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 09:32:01,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:01,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:01,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:32:01,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:32:01,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 09:32:01,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:01,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-29 09:32:01,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:01,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:01,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:01,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:01,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-29 09:32:01,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:32:01,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-29 09:32:01,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:01,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:01,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 09:32:01,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:32:01,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 09:32:01,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:02,205 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 44 [2020-10-29 09:32:02,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:32:02,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:02,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:02,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:02,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:32:02,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:32:02,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 09:32:02,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:02,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:02,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:32:02,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:32:02,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 09:32:02,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:02,516 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 09:32:02,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [612111243] [2020-10-29 09:32:02,517 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:32:02,517 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-29 09:32:02,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909006155] [2020-10-29 09:32:02,517 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-29 09:32:02,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:32:02,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-29 09:32:02,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=416, Unknown=0, NotChecked=0, Total=462 [2020-10-29 09:32:02,519 INFO L87 Difference]: Start difference. First operand 65 states and 76 transitions. Second operand 22 states. [2020-10-29 09:32:03,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:32:03,946 INFO L93 Difference]: Finished difference Result 84 states and 101 transitions. [2020-10-29 09:32:03,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-29 09:32:03,947 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 46 [2020-10-29 09:32:03,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:32:03,948 INFO L225 Difference]: With dead ends: 84 [2020-10-29 09:32:03,948 INFO L226 Difference]: Without dead ends: 77 [2020-10-29 09:32:03,950 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=121, Invalid=1139, Unknown=0, NotChecked=0, Total=1260 [2020-10-29 09:32:03,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-29 09:32:03,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 67. [2020-10-29 09:32:03,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-29 09:32:03,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 77 transitions. [2020-10-29 09:32:03,965 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 77 transitions. Word has length 46 [2020-10-29 09:32:03,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:32:03,966 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 77 transitions. [2020-10-29 09:32:03,966 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-29 09:32:03,966 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 77 transitions. [2020-10-29 09:32:03,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-29 09:32:03,968 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:32:03,968 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:32:03,968 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 09:32:03,968 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:32:03,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:32:03,969 INFO L82 PathProgramCache]: Analyzing trace with hash 446471413, now seen corresponding path program 1 times [2020-10-29 09:32:03,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:32:03,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2085538549] [2020-10-29 09:32:03,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:32:03,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:03,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:04,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:04,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:04,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:05,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:08,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:08,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-29 09:32:08,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 09:32:08,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 09:32:08,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:08,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:08,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 09:32:08,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:32:08,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-29 09:32:08,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:09,058 ERROR L253 erpolLogProxyWrapper]: Interpolant 10 not inductive [2020-10-29 09:32:09,060 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 09:32:09,061 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: generated interpolants did not pass sanity check at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:851) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:155) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:256) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:150) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:191) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:285) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:166) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:326) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:228) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:109) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:241) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:341) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:134) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-10-29 09:32:09,075 INFO L168 Benchmark]: Toolchain (without parser) took 54421.77 ms. Allocated memory was 151.0 MB in the beginning and 576.7 MB in the end (delta: 425.7 MB). Free memory was 124.4 MB in the beginning and 354.3 MB in the end (delta: -229.9 MB). Peak memory consumption was 346.1 MB. Max. memory is 8.0 GB. [2020-10-29 09:32:09,077 INFO L168 Benchmark]: CDTParser took 0.66 ms. Allocated memory is still 151.0 MB. Free memory is still 126.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 09:32:09,078 INFO L168 Benchmark]: CACSL2BoogieTranslator took 670.82 ms. Allocated memory is still 151.0 MB. Free memory was 123.8 MB in the beginning and 101.0 MB in the end (delta: 22.8 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. [2020-10-29 09:32:09,080 INFO L168 Benchmark]: Boogie Preprocessor took 70.89 ms. Allocated memory is still 151.0 MB. Free memory was 101.0 MB in the beginning and 98.2 MB in the end (delta: 2.8 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-10-29 09:32:09,082 INFO L168 Benchmark]: RCFGBuilder took 1053.16 ms. Allocated memory is still 151.0 MB. Free memory was 98.2 MB in the beginning and 113.0 MB in the end (delta: -14.8 MB). Peak memory consumption was 33.8 MB. Max. memory is 8.0 GB. [2020-10-29 09:32:09,082 INFO L168 Benchmark]: TraceAbstraction took 52611.84 ms. Allocated memory was 151.0 MB in the beginning and 576.7 MB in the end (delta: 425.7 MB). Free memory was 112.5 MB in the beginning and 354.3 MB in the end (delta: -241.8 MB). Peak memory consumption was 333.3 MB. Max. memory is 8.0 GB. [2020-10-29 09:32:09,092 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.66 ms. Allocated memory is still 151.0 MB. Free memory is still 126.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 670.82 ms. Allocated memory is still 151.0 MB. Free memory was 123.8 MB in the beginning and 101.0 MB in the end (delta: 22.8 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 70.89 ms. Allocated memory is still 151.0 MB. Free memory was 101.0 MB in the beginning and 98.2 MB in the end (delta: 2.8 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1053.16 ms. Allocated memory is still 151.0 MB. Free memory was 98.2 MB in the beginning and 113.0 MB in the end (delta: -14.8 MB). Peak memory consumption was 33.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 52611.84 ms. Allocated memory was 151.0 MB in the beginning and 576.7 MB in the end (delta: 425.7 MB). Free memory was 112.5 MB in the beginning and 354.3 MB in the end (delta: -241.8 MB). Peak memory consumption was 333.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: generated interpolants did not pass sanity check de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: generated interpolants did not pass sanity check: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...