./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-sets/test_mutex_unbounded-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-sets/test_mutex_unbounded-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 52ed361cdf08860b8c7c7d564ef95393de2d3a38663ac135cf0da9ded1f39b3f --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 03:29:22,834 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 03:29:22,836 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 03:29:22,861 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 03:29:22,861 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 03:29:22,862 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 03:29:22,864 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 03:29:22,865 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 03:29:22,867 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 03:29:22,867 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 03:29:22,868 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 03:29:22,869 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 03:29:22,869 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 03:29:22,870 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 03:29:22,875 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 03:29:22,876 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 03:29:22,877 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 03:29:22,878 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 03:29:22,879 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 03:29:22,883 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 03:29:22,884 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 03:29:22,892 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 03:29:22,893 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 03:29:22,894 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 03:29:22,895 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 03:29:22,897 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 03:29:22,898 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 03:29:22,898 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 03:29:22,899 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 03:29:22,901 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 03:29:22,901 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 03:29:22,902 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 03:29:22,903 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 03:29:22,903 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 03:29:22,905 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 03:29:22,906 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 03:29:22,906 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 03:29:22,907 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 03:29:22,907 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 03:29:22,907 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 03:29:22,908 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 03:29:22,909 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 03:29:22,911 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 03:29:22,948 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 03:29:22,948 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 03:29:22,948 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 03:29:22,949 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 03:29:22,949 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 03:29:22,950 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 03:29:22,950 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 03:29:22,950 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 03:29:22,951 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 03:29:22,951 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 03:29:22,952 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 03:29:22,952 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 03:29:22,952 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 03:29:22,952 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 03:29:22,952 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 03:29:22,953 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 03:29:22,953 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 03:29:22,953 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 03:29:22,953 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 03:29:22,954 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 03:29:22,954 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 03:29:22,955 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 03:29:22,955 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 03:29:22,955 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 03:29:22,955 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 03:29:22,956 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 03:29:22,956 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 03:29:22,956 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 03:29:22,956 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 03:29:22,956 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 03:29:22,957 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 03:29:22,957 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 03:29:22,957 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 03:29:22,957 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 52ed361cdf08860b8c7c7d564ef95393de2d3a38663ac135cf0da9ded1f39b3f [2022-07-12 03:29:23,236 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 03:29:23,253 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 03:29:23,255 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 03:29:23,256 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 03:29:23,257 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 03:29:23,258 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-sets/test_mutex_unbounded-2.i [2022-07-12 03:29:23,311 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f446fef4/636e71968b5c4195be7977fe75c11e33/FLAG388f888f4 [2022-07-12 03:29:23,802 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 03:29:23,803 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-2.i [2022-07-12 03:29:23,822 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f446fef4/636e71968b5c4195be7977fe75c11e33/FLAG388f888f4 [2022-07-12 03:29:24,290 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f446fef4/636e71968b5c4195be7977fe75c11e33 [2022-07-12 03:29:24,292 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 03:29:24,294 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 03:29:24,299 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 03:29:24,300 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 03:29:24,302 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 03:29:24,302 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 03:29:24" (1/1) ... [2022-07-12 03:29:24,303 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7057633f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:29:24, skipping insertion in model container [2022-07-12 03:29:24,303 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 03:29:24" (1/1) ... [2022-07-12 03:29:24,308 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 03:29:24,352 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 03:29:24,617 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-2.i[26271,26284] [2022-07-12 03:29:24,625 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-2.i[26396,26409] [2022-07-12 03:29:24,627 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-2.i[26511,26524] [2022-07-12 03:29:24,649 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 03:29:24,657 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 03:29:24,706 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-2.i[26271,26284] [2022-07-12 03:29:24,707 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-2.i[26396,26409] [2022-07-12 03:29:24,708 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-2.i[26511,26524] [2022-07-12 03:29:24,715 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 03:29:24,740 INFO L208 MainTranslator]: Completed translation [2022-07-12 03:29:24,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:29:24 WrapperNode [2022-07-12 03:29:24,741 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 03:29:24,743 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 03:29:24,743 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 03:29:24,743 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 03:29:24,749 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:29:24" (1/1) ... [2022-07-12 03:29:24,781 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:29:24" (1/1) ... [2022-07-12 03:29:24,810 INFO L137 Inliner]: procedures = 142, calls = 63, calls flagged for inlining = 14, calls inlined = 13, statements flattened = 162 [2022-07-12 03:29:24,810 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 03:29:24,811 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 03:29:24,811 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 03:29:24,811 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 03:29:24,818 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:29:24" (1/1) ... [2022-07-12 03:29:24,819 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:29:24" (1/1) ... [2022-07-12 03:29:24,823 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:29:24" (1/1) ... [2022-07-12 03:29:24,825 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:29:24" (1/1) ... [2022-07-12 03:29:24,848 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:29:24" (1/1) ... [2022-07-12 03:29:24,852 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:29:24" (1/1) ... [2022-07-12 03:29:24,860 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:29:24" (1/1) ... [2022-07-12 03:29:24,863 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 03:29:24,867 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 03:29:24,868 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 03:29:24,868 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 03:29:24,869 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:29:24" (1/1) ... [2022-07-12 03:29:24,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 03:29:24,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 03:29:24,892 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 03:29:24,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 03:29:24,923 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2022-07-12 03:29:24,925 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2022-07-12 03:29:24,925 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2022-07-12 03:29:24,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2022-07-12 03:29:24,925 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-12 03:29:24,925 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 03:29:24,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-12 03:29:24,926 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_in_set [2022-07-12 03:29:24,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_in_set [2022-07-12 03:29:24,926 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-12 03:29:24,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 03:29:24,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-12 03:29:24,926 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2022-07-12 03:29:24,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2022-07-12 03:29:24,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 03:29:24,927 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_malloc [2022-07-12 03:29:24,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_malloc [2022-07-12 03:29:24,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 03:29:24,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 03:29:25,091 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 03:29:25,092 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 03:29:25,367 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 03:29:25,373 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 03:29:25,373 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2022-07-12 03:29:25,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 03:29:25 BoogieIcfgContainer [2022-07-12 03:29:25,375 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 03:29:25,376 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 03:29:25,377 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 03:29:25,379 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 03:29:25,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 03:29:24" (1/3) ... [2022-07-12 03:29:25,380 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e6baba9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 03:29:25, skipping insertion in model container [2022-07-12 03:29:25,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:29:24" (2/3) ... [2022-07-12 03:29:25,381 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e6baba9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 03:29:25, skipping insertion in model container [2022-07-12 03:29:25,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 03:29:25" (3/3) ... [2022-07-12 03:29:25,382 INFO L111 eAbstractionObserver]: Analyzing ICFG test_mutex_unbounded-2.i [2022-07-12 03:29:25,394 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 03:29:25,394 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-07-12 03:29:25,492 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 03:29:25,514 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5803540d, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6121d818 [2022-07-12 03:29:25,518 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-07-12 03:29:25,523 INFO L276 IsEmpty]: Start isEmpty. Operand has 77 states, 58 states have (on average 1.3448275862068966) internal successors, (78), 62 states have internal predecessors, (78), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-07-12 03:29:25,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-07-12 03:29:25,531 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:29:25,532 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 03:29:25,533 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:29:25,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:29:25,539 INFO L85 PathProgramCache]: Analyzing trace with hash -840575259, now seen corresponding path program 1 times [2022-07-12 03:29:25,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 03:29:25,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618582815] [2022-07-12 03:29:25,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:29:25,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 03:29:25,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:29:25,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:29:25,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 03:29:25,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618582815] [2022-07-12 03:29:25,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618582815] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 03:29:25,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 03:29:25,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 03:29:25,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367720186] [2022-07-12 03:29:25,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 03:29:25,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-12 03:29:25,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 03:29:25,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-12 03:29:25,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 03:29:25,737 INFO L87 Difference]: Start difference. First operand has 77 states, 58 states have (on average 1.3448275862068966) internal successors, (78), 62 states have internal predecessors, (78), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 03:29:25,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 03:29:25,769 INFO L93 Difference]: Finished difference Result 151 states and 198 transitions. [2022-07-12 03:29:25,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-12 03:29:25,773 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-07-12 03:29:25,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 03:29:25,781 INFO L225 Difference]: With dead ends: 151 [2022-07-12 03:29:25,781 INFO L226 Difference]: Without dead ends: 72 [2022-07-12 03:29:25,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 03:29:25,791 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 03:29:25,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 03:29:25,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-07-12 03:29:25,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2022-07-12 03:29:25,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 54 states have (on average 1.1851851851851851) internal successors, (64), 57 states have internal predecessors, (64), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-07-12 03:29:25,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 84 transitions. [2022-07-12 03:29:25,840 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 84 transitions. Word has length 13 [2022-07-12 03:29:25,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 03:29:25,841 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 84 transitions. [2022-07-12 03:29:25,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 03:29:25,841 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 84 transitions. [2022-07-12 03:29:25,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-07-12 03:29:25,843 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:29:25,843 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 03:29:25,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 03:29:25,844 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:29:25,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:29:25,845 INFO L85 PathProgramCache]: Analyzing trace with hash 992690414, now seen corresponding path program 1 times [2022-07-12 03:29:25,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 03:29:25,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603356027] [2022-07-12 03:29:25,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:29:25,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 03:29:25,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:29:26,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:29:26,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 03:29:26,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603356027] [2022-07-12 03:29:26,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603356027] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 03:29:26,013 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 03:29:26,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 03:29:26,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255188559] [2022-07-12 03:29:26,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 03:29:26,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 03:29:26,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 03:29:26,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 03:29:26,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 03:29:26,019 INFO L87 Difference]: Start difference. First operand 72 states and 84 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 03:29:26,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 03:29:26,183 INFO L93 Difference]: Finished difference Result 129 states and 155 transitions. [2022-07-12 03:29:26,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 03:29:26,183 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-07-12 03:29:26,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 03:29:26,186 INFO L225 Difference]: With dead ends: 129 [2022-07-12 03:29:26,186 INFO L226 Difference]: Without dead ends: 123 [2022-07-12 03:29:26,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-12 03:29:26,188 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 60 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 03:29:26,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 369 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 03:29:26,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2022-07-12 03:29:26,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 99. [2022-07-12 03:29:26,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 77 states have (on average 1.2337662337662338) internal successors, (95), 81 states have internal predecessors, (95), 13 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2022-07-12 03:29:26,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 121 transitions. [2022-07-12 03:29:26,202 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 121 transitions. Word has length 13 [2022-07-12 03:29:26,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 03:29:26,202 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 121 transitions. [2022-07-12 03:29:26,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 03:29:26,202 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 121 transitions. [2022-07-12 03:29:26,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-12 03:29:26,203 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:29:26,203 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 03:29:26,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 03:29:26,204 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:29:26,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:29:26,204 INFO L85 PathProgramCache]: Analyzing trace with hash 194685096, now seen corresponding path program 1 times [2022-07-12 03:29:26,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 03:29:26,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948252466] [2022-07-12 03:29:26,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:29:26,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 03:29:26,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:29:26,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 03:29:26,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:29:26,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:29:26,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 03:29:26,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948252466] [2022-07-12 03:29:26,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948252466] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 03:29:26,252 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 03:29:26,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 03:29:26,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831597141] [2022-07-12 03:29:26,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 03:29:26,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 03:29:26,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 03:29:26,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 03:29:26,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 03:29:26,254 INFO L87 Difference]: Start difference. First operand 99 states and 121 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-12 03:29:26,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 03:29:26,287 INFO L93 Difference]: Finished difference Result 109 states and 136 transitions. [2022-07-12 03:29:26,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 03:29:26,289 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-07-12 03:29:26,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 03:29:26,290 INFO L225 Difference]: With dead ends: 109 [2022-07-12 03:29:26,290 INFO L226 Difference]: Without dead ends: 107 [2022-07-12 03:29:26,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 03:29:26,291 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 0 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 03:29:26,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 239 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 03:29:26,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-07-12 03:29:26,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2022-07-12 03:29:26,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 83 states have (on average 1.216867469879518) internal successors, (101), 87 states have internal predecessors, (101), 13 states have call successors, (13), 6 states have call predecessors, (13), 8 states have return successors, (19), 14 states have call predecessors, (19), 13 states have call successors, (19) [2022-07-12 03:29:26,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 133 transitions. [2022-07-12 03:29:26,319 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 133 transitions. Word has length 15 [2022-07-12 03:29:26,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 03:29:26,319 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 133 transitions. [2022-07-12 03:29:26,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-12 03:29:26,320 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 133 transitions. [2022-07-12 03:29:26,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-12 03:29:26,321 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:29:26,321 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 03:29:26,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 03:29:26,322 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:29:26,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:29:26,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1769288401, now seen corresponding path program 1 times [2022-07-12 03:29:26,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 03:29:26,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624776882] [2022-07-12 03:29:26,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:29:26,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 03:29:26,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:29:26,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 03:29:26,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:29:26,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:29:26,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 03:29:26,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624776882] [2022-07-12 03:29:26,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624776882] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 03:29:26,390 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 03:29:26,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 03:29:26,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151520315] [2022-07-12 03:29:26,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 03:29:26,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 03:29:26,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 03:29:26,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 03:29:26,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 03:29:26,392 INFO L87 Difference]: Start difference. First operand 107 states and 133 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-12 03:29:26,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 03:29:26,503 INFO L93 Difference]: Finished difference Result 186 states and 225 transitions. [2022-07-12 03:29:26,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 03:29:26,503 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-07-12 03:29:26,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 03:29:26,504 INFO L225 Difference]: With dead ends: 186 [2022-07-12 03:29:26,505 INFO L226 Difference]: Without dead ends: 88 [2022-07-12 03:29:26,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 03:29:26,506 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 19 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 03:29:26,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 207 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 03:29:26,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-07-12 03:29:26,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 83. [2022-07-12 03:29:26,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 62 states have (on average 1.1612903225806452) internal successors, (72), 66 states have internal predecessors, (72), 11 states have call successors, (11), 6 states have call predecessors, (11), 7 states have return successors, (14), 11 states have call predecessors, (14), 11 states have call successors, (14) [2022-07-12 03:29:26,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 97 transitions. [2022-07-12 03:29:26,516 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 97 transitions. Word has length 15 [2022-07-12 03:29:26,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 03:29:26,516 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 97 transitions. [2022-07-12 03:29:26,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-12 03:29:26,517 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 97 transitions. [2022-07-12 03:29:26,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-07-12 03:29:26,518 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:29:26,518 INFO L195 NwaCegarLoop]: 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] [2022-07-12 03:29:26,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 03:29:26,518 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:29:26,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:29:26,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1822538755, now seen corresponding path program 1 times [2022-07-12 03:29:26,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 03:29:26,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568725807] [2022-07-12 03:29:26,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:29:26,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 03:29:26,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:29:26,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 03:29:26,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:29:26,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 03:29:26,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:29:26,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 03:29:26,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:29:26,854 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:29:26,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 03:29:26,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568725807] [2022-07-12 03:29:26,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568725807] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 03:29:26,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547747343] [2022-07-12 03:29:26,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:29:26,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 03:29:26,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 03:29:26,864 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 03:29:26,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 03:29:26,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:29:27,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 50 conjunts are in the unsatisfiable core [2022-07-12 03:29:27,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 03:29:27,220 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-12 03:29:27,221 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-07-12 03:29:27,467 INFO L356 Elim1Store]: treesize reduction 117, result has 35.4 percent of original size [2022-07-12 03:29:27,468 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 194 treesize of output 281 [2022-07-12 03:29:27,494 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-07-12 03:29:27,516 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-07-12 03:29:27,540 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-07-12 03:29:28,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:29:28,044 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 16 [2022-07-12 03:29:28,048 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-12 03:29:28,050 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-12 03:29:28,054 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 03:29:28,061 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 03:29:28,085 INFO L356 Elim1Store]: treesize reduction 28, result has 47.2 percent of original size [2022-07-12 03:29:28,085 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 183 treesize of output 207 [2022-07-12 03:29:28,101 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-12 03:29:28,118 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 03:29:28,122 INFO L356 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2022-07-12 03:29:28,123 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 68 treesize of output 11 [2022-07-12 03:29:28,132 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-12 03:29:28,305 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2022-07-12 03:29:28,330 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:29:28,330 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 03:29:28,539 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 03:29:28,540 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 746 treesize of output 735 [2022-07-12 03:29:28,550 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 814 treesize of output 798 [2022-07-12 03:29:28,560 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 974 treesize of output 942 [2022-07-12 03:29:28,575 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 942 treesize of output 938 [2022-07-12 03:29:28,588 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 938 treesize of output 930 [2022-07-12 03:29:28,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:29:28,802 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 03:29:28,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:29:28,805 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 28 [2022-07-12 03:29:28,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:29:28,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:29:28,932 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:29:28,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1547747343] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 03:29:28,933 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 03:29:28,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 33 [2022-07-12 03:29:28,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643577649] [2022-07-12 03:29:28,933 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 03:29:28,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-07-12 03:29:28,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 03:29:28,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-07-12 03:29:28,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=954, Unknown=0, NotChecked=0, Total=1056 [2022-07-12 03:29:28,935 INFO L87 Difference]: Start difference. First operand 83 states and 97 transitions. Second operand has 33 states, 28 states have (on average 2.0) internal successors, (56), 25 states have internal predecessors, (56), 8 states have call successors, (9), 6 states have call predecessors, (9), 9 states have return successors, (9), 7 states have call predecessors, (9), 8 states have call successors, (9) [2022-07-12 03:29:30,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 03:29:30,226 INFO L93 Difference]: Finished difference Result 194 states and 227 transitions. [2022-07-12 03:29:30,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-12 03:29:30,226 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 28 states have (on average 2.0) internal successors, (56), 25 states have internal predecessors, (56), 8 states have call successors, (9), 6 states have call predecessors, (9), 9 states have return successors, (9), 7 states have call predecessors, (9), 8 states have call successors, (9) Word has length 31 [2022-07-12 03:29:30,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 03:29:30,228 INFO L225 Difference]: With dead ends: 194 [2022-07-12 03:29:30,228 INFO L226 Difference]: Without dead ends: 159 [2022-07-12 03:29:30,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 469 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=371, Invalid=2281, Unknown=0, NotChecked=0, Total=2652 [2022-07-12 03:29:30,230 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 569 mSDsluCounter, 659 mSDsCounter, 0 mSdLazyCounter, 1284 mSolverCounterSat, 269 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 571 SdHoareTripleChecker+Valid, 721 SdHoareTripleChecker+Invalid, 1553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 269 IncrementalHoareTripleChecker+Valid, 1284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-12 03:29:30,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [571 Valid, 721 Invalid, 1553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [269 Valid, 1284 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-12 03:29:30,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2022-07-12 03:29:30,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 131. [2022-07-12 03:29:30,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 100 states have (on average 1.2) internal successors, (120), 106 states have internal predecessors, (120), 16 states have call successors, (16), 10 states have call predecessors, (16), 12 states have return successors, (21), 15 states have call predecessors, (21), 16 states have call successors, (21) [2022-07-12 03:29:30,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 157 transitions. [2022-07-12 03:29:30,246 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 157 transitions. Word has length 31 [2022-07-12 03:29:30,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 03:29:30,246 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 157 transitions. [2022-07-12 03:29:30,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 28 states have (on average 2.0) internal successors, (56), 25 states have internal predecessors, (56), 8 states have call successors, (9), 6 states have call predecessors, (9), 9 states have return successors, (9), 7 states have call predecessors, (9), 8 states have call successors, (9) [2022-07-12 03:29:30,247 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 157 transitions. [2022-07-12 03:29:30,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-07-12 03:29:30,248 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:29:30,248 INFO L195 NwaCegarLoop]: 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, 1, 1] [2022-07-12 03:29:30,272 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-12 03:29:30,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 03:29:30,464 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:29:30,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:29:30,464 INFO L85 PathProgramCache]: Analyzing trace with hash 389627046, now seen corresponding path program 1 times [2022-07-12 03:29:30,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 03:29:30,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818811032] [2022-07-12 03:29:30,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:29:30,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 03:29:30,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:29:30,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 03:29:30,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:29:30,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 03:29:30,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:29:31,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 03:29:31,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat