/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/ldv-sets/test_mutex_unbounded-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 06:06:26,023 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 06:06:26,024 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 06:06:26,068 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 06:06:26,068 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 06:06:26,072 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 06:06:26,076 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 06:06:26,082 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 06:06:26,086 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 06:06:26,092 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 06:06:26,093 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 06:06:26,093 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 06:06:26,094 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 06:06:26,094 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 06:06:26,097 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 06:06:26,099 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 06:06:26,100 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 06:06:26,101 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 06:06:26,105 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 06:06:26,109 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 06:06:26,110 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 06:06:26,114 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 06:06:26,115 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 06:06:26,115 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 06:06:26,117 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 06:06:26,118 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 06:06:26,118 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 06:06:26,118 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 06:06:26,119 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 06:06:26,120 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 06:06:26,120 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 06:06:26,120 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 06:06:26,121 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 06:06:26,121 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 06:06:26,122 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 06:06:26,122 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 06:06:26,125 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 06:06:26,126 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 06:06:26,126 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 06:06:26,127 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 06:06:26,127 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 06:06:26,128 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-01-10 06:06:26,162 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 06:06:26,162 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 06:06:26,162 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 06:06:26,163 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 06:06:26,163 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 06:06:26,163 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 06:06:26,164 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 06:06:26,165 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 06:06:26,165 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 06:06:26,165 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 06:06:26,166 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 06:06:26,166 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 06:06:26,166 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 06:06:26,166 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 06:06:26,166 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 06:06:26,166 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 06:06:26,166 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 06:06:26,166 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 06:06:26,167 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 06:06:26,167 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 06:06:26,167 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 06:06:26,167 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 06:06:26,167 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 06:06:26,167 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 06:06:26,167 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 06:06:26,167 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 06:06:26,168 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 06:06:26,168 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 06:06:26,168 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 06:06:26,168 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 06:06:26,168 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 06:06:26,168 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 06:06:26,168 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 06:06:26,169 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 06:06:26,376 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 06:06:26,394 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 06:06:26,396 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 06:06:26,397 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 06:06:26,399 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 06:06:26,401 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-sets/test_mutex_unbounded-1.i [2022-01-10 06:06:26,465 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a021f99e9/96292b1f60654912ab11d0ae36b67b90/FLAG28118f7af [2022-01-10 06:06:26,862 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 06:06:26,862 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-sets/test_mutex_unbounded-1.i [2022-01-10 06:06:26,880 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a021f99e9/96292b1f60654912ab11d0ae36b67b90/FLAG28118f7af [2022-01-10 06:06:27,204 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a021f99e9/96292b1f60654912ab11d0ae36b67b90 [2022-01-10 06:06:27,206 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 06:06:27,207 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 06:06:27,214 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 06:06:27,214 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 06:06:27,216 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 06:06:27,217 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:06:27" (1/1) ... [2022-01-10 06:06:27,218 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@646004ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:06:27, skipping insertion in model container [2022-01-10 06:06:27,218 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:06:27" (1/1) ... [2022-01-10 06:06:27,237 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 06:06:27,280 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 06:06:27,593 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-sets/test_mutex_unbounded-1.i[26271,26284] [2022-01-10 06:06:27,599 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-sets/test_mutex_unbounded-1.i[26396,26409] [2022-01-10 06:06:27,601 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-sets/test_mutex_unbounded-1.i[26511,26524] [2022-01-10 06:06:27,624 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:06:27,638 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 06:06:27,651 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 06:06:27,692 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-sets/test_mutex_unbounded-1.i[26271,26284] [2022-01-10 06:06:27,693 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-sets/test_mutex_unbounded-1.i[26396,26409] [2022-01-10 06:06:27,693 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-sets/test_mutex_unbounded-1.i[26511,26524] [2022-01-10 06:06:27,698 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:06:27,700 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 06:06:27,734 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-sets/test_mutex_unbounded-1.i[26271,26284] [2022-01-10 06:06:27,735 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-sets/test_mutex_unbounded-1.i[26396,26409] [2022-01-10 06:06:27,735 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-sets/test_mutex_unbounded-1.i[26511,26524] [2022-01-10 06:06:27,741 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:06:27,770 INFO L208 MainTranslator]: Completed translation [2022-01-10 06:06:27,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:06:27 WrapperNode [2022-01-10 06:06:27,770 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 06:06:27,772 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 06:06:27,772 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 06:06:27,772 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 06:06:27,779 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:06:27" (1/1) ... [2022-01-10 06:06:27,798 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:06:27" (1/1) ... [2022-01-10 06:06:27,837 INFO L137 Inliner]: procedures = 143, calls = 62, calls flagged for inlining = 15, calls inlined = 14, statements flattened = 156 [2022-01-10 06:06:27,837 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 06:06:27,838 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 06:06:27,838 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 06:06:27,838 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 06:06:27,850 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:06:27" (1/1) ... [2022-01-10 06:06:27,851 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:06:27" (1/1) ... [2022-01-10 06:06:27,867 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:06:27" (1/1) ... [2022-01-10 06:06:27,868 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:06:27" (1/1) ... [2022-01-10 06:06:27,891 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:06:27" (1/1) ... [2022-01-10 06:06:27,896 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:06:27" (1/1) ... [2022-01-10 06:06:27,898 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:06:27" (1/1) ... [2022-01-10 06:06:27,902 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 06:06:27,916 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 06:06:27,916 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 06:06:27,916 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 06:06:27,919 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:06:27" (1/1) ... [2022-01-10 06:06:27,926 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 06:06:27,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 06:06:27,953 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) [2022-01-10 06:06:27,976 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 [2022-01-10 06:06:27,994 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2022-01-10 06:06:27,995 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2022-01-10 06:06:27,995 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2022-01-10 06:06:27,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2022-01-10 06:06:27,995 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-10 06:06:27,995 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 06:06:27,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-01-10 06:06:27,995 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_in_set [2022-01-10 06:06:27,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_in_set [2022-01-10 06:06:27,996 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-01-10 06:06:27,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-10 06:06:27,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-01-10 06:06:27,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 06:06:27,996 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_malloc [2022-01-10 06:06:27,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_malloc [2022-01-10 06:06:27,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 06:06:27,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 06:06:28,165 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 06:06:28,167 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 06:06:28,586 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 06:06:28,592 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 06:06:28,593 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2022-01-10 06:06:28,597 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:06:28 BoogieIcfgContainer [2022-01-10 06:06:28,598 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 06:06:28,599 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 06:06:28,599 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 06:06:28,606 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 06:06:28,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:06:27" (1/3) ... [2022-01-10 06:06:28,607 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55c07116 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:06:28, skipping insertion in model container [2022-01-10 06:06:28,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:06:27" (2/3) ... [2022-01-10 06:06:28,607 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55c07116 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:06:28, skipping insertion in model container [2022-01-10 06:06:28,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:06:28" (3/3) ... [2022-01-10 06:06:28,609 INFO L111 eAbstractionObserver]: Analyzing ICFG test_mutex_unbounded-1.i [2022-01-10 06:06:28,613 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 06:06:28,614 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-01-10 06:06:28,678 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 06:06:28,692 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 06:06:28,693 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-10 06:06:28,714 INFO L276 IsEmpty]: Start isEmpty. Operand has 69 states, 53 states have (on average 1.3773584905660377) internal successors, (73), 57 states have internal predecessors, (73), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-01-10 06:06:28,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-01-10 06:06:28,720 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:06:28,720 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:06:28,721 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:06:28,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:06:28,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1327890037, now seen corresponding path program 1 times [2022-01-10 06:06:28,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:06:28,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [694372703] [2022-01-10 06:06:28,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:06:28,750 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:06:28,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:06:28,757 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:06:28,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-01-10 06:06:28,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:06:28,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 1 conjunts are in the unsatisfiable core [2022-01-10 06:06:28,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:06:28,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:06:28,971 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:06:28,972 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:06:28,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [694372703] [2022-01-10 06:06:28,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [694372703] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:06:28,973 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:06:28,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 06:06:28,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391112917] [2022-01-10 06:06:28,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:06:28,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 06:06:28,979 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:06:29,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 06:06:29,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 06:06:29,019 INFO L87 Difference]: Start difference. First operand has 69 states, 53 states have (on average 1.3773584905660377) internal successors, (73), 57 states have internal predecessors, (73), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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) [2022-01-10 06:06:29,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:06:29,046 INFO L93 Difference]: Finished difference Result 135 states and 180 transitions. [2022-01-10 06:06:29,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 06:06:29,050 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 14 [2022-01-10 06:06:29,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:06:29,060 INFO L225 Difference]: With dead ends: 135 [2022-01-10 06:06:29,060 INFO L226 Difference]: Without dead ends: 64 [2022-01-10 06:06:29,067 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 06:06:29,077 INFO L933 BasicCegarLoop]: 80 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, 80 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 [2022-01-10 06:06:29,079 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:06:29,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-01-10 06:06:29,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2022-01-10 06:06:29,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 49 states have (on average 1.2040816326530612) internal successors, (59), 52 states have internal predecessors, (59), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-01-10 06:06:29,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 75 transitions. [2022-01-10 06:06:29,122 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 75 transitions. Word has length 14 [2022-01-10 06:06:29,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:06:29,122 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 75 transitions. [2022-01-10 06:06:29,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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) [2022-01-10 06:06:29,123 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 75 transitions. [2022-01-10 06:06:29,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-01-10 06:06:29,124 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:06:29,125 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:06:29,137 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-01-10 06:06:29,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:06:29,326 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:06:29,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:06:29,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1673478796, now seen corresponding path program 1 times [2022-01-10 06:06:29,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:06:29,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1106630143] [2022-01-10 06:06:29,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:06:29,328 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:06:29,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:06:29,329 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:06:29,331 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-01-10 06:06:29,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:06:29,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-10 06:06:29,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:06:29,653 INFO L387 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 15 treesize of output 7 [2022-01-10 06:06:29,667 INFO L387 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 17 treesize of output 9 [2022-01-10 06:06:29,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:06:29,712 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:06:29,713 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:06:29,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1106630143] [2022-01-10 06:06:29,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1106630143] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:06:29,715 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:06:29,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:06:29,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480195894] [2022-01-10 06:06:29,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:06:29,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:06:29,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:06:29,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:06:29,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:06:29,730 INFO L87 Difference]: Start difference. First operand 64 states and 75 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2022-01-10 06:06:30,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:06:30,260 INFO L93 Difference]: Finished difference Result 141 states and 164 transitions. [2022-01-10 06:06:30,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:06:30,263 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 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 14 [2022-01-10 06:06:30,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:06:30,265 INFO L225 Difference]: With dead ends: 141 [2022-01-10 06:06:30,266 INFO L226 Difference]: Without dead ends: 86 [2022-01-10 06:06:30,266 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:06:30,267 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 26 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 06:06:30,268 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 184 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 06:06:30,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-01-10 06:06:30,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 75. [2022-01-10 06:06:30,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 58 states have (on average 1.1896551724137931) internal successors, (69), 62 states have internal predecessors, (69), 9 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2022-01-10 06:06:30,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 87 transitions. [2022-01-10 06:06:30,292 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 87 transitions. Word has length 14 [2022-01-10 06:06:30,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:06:30,292 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 87 transitions. [2022-01-10 06:06:30,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2022-01-10 06:06:30,293 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 87 transitions. [2022-01-10 06:06:30,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-01-10 06:06:30,293 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:06:30,293 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:06:30,306 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-01-10 06:06:30,506 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:06:30,506 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:06:30,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:06:30,507 INFO L85 PathProgramCache]: Analyzing trace with hash 642646269, now seen corresponding path program 1 times [2022-01-10 06:06:30,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:06:30,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [446939096] [2022-01-10 06:06:30,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:06:30,508 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:06:30,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:06:30,509 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:06:30,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-01-10 06:06:30,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:06:30,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-10 06:06:30,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:06:30,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:06:30,763 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:06:30,763 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:06:30,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [446939096] [2022-01-10 06:06:30,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [446939096] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:06:30,764 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:06:30,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:06:30,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67637913] [2022-01-10 06:06:30,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:06:30,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 06:06:30,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:06:30,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 06:06:30,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:06:30,766 INFO L87 Difference]: Start difference. First operand 75 states and 87 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) [2022-01-10 06:06:31,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:06:31,303 INFO L93 Difference]: Finished difference Result 86 states and 99 transitions. [2022-01-10 06:06:31,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:06:31,304 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 [2022-01-10 06:06:31,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:06:31,306 INFO L225 Difference]: With dead ends: 86 [2022-01-10 06:06:31,306 INFO L226 Difference]: Without dead ends: 76 [2022-01-10 06:06:31,306 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 06:06:31,307 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 17 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 06:06:31,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 340 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 06:06:31,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-01-10 06:06:31,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 71. [2022-01-10 06:06:31,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 54 states have (on average 1.1851851851851851) internal successors, (64), 58 states have internal predecessors, (64), 9 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2022-01-10 06:06:31,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 82 transitions. [2022-01-10 06:06:31,316 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 82 transitions. Word has length 13 [2022-01-10 06:06:31,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:06:31,316 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 82 transitions. [2022-01-10 06:06:31,316 INFO L471 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) [2022-01-10 06:06:31,316 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 82 transitions. [2022-01-10 06:06:31,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-10 06:06:31,317 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:06:31,317 INFO L514 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, 1] [2022-01-10 06:06:31,327 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-01-10 06:06:31,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:06:31,527 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:06:31,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:06:31,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1591297434, now seen corresponding path program 1 times [2022-01-10 06:06:31,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:06:31,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [53803442] [2022-01-10 06:06:31,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:06:31,529 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:06:31,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:06:31,530 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:06:31,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-01-10 06:06:31,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:06:31,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:06:31,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:06:31,756 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-10 06:06:31,756 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:06:31,756 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:06:31,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [53803442] [2022-01-10 06:06:31,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [53803442] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:06:31,757 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:06:31,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:06:31,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023743902] [2022-01-10 06:06:31,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:06:31,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:06:31,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:06:31,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:06:31,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:06:31,759 INFO L87 Difference]: Start difference. First operand 71 states and 82 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-01-10 06:06:31,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:06:31,776 INFO L93 Difference]: Finished difference Result 76 states and 89 transitions. [2022-01-10 06:06:31,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:06:31,777 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 32 [2022-01-10 06:06:31,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:06:31,778 INFO L225 Difference]: With dead ends: 76 [2022-01-10 06:06:31,778 INFO L226 Difference]: Without dead ends: 74 [2022-01-10 06:06:31,778 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:06:31,779 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 0 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:06:31,779 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 218 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:06:31,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-01-10 06:06:31,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2022-01-10 06:06:31,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 56 states have (on average 1.1785714285714286) internal successors, (66), 60 states have internal predecessors, (66), 9 states have call successors, (9), 5 states have call predecessors, (9), 6 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2022-01-10 06:06:31,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 87 transitions. [2022-01-10 06:06:31,787 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 87 transitions. Word has length 32 [2022-01-10 06:06:31,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:06:31,787 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 87 transitions. [2022-01-10 06:06:31,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-01-10 06:06:31,788 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 87 transitions. [2022-01-10 06:06:31,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-10 06:06:31,789 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:06:31,789 INFO L514 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, 1] [2022-01-10 06:06:31,802 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-01-10 06:06:32,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:06:32,000 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:06:32,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:06:32,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1642091089, now seen corresponding path program 1 times [2022-01-10 06:06:32,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:06:32,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2019729627] [2022-01-10 06:06:32,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:06:32,002 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:06:32,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:06:32,003 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:06:32,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-01-10 06:06:32,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:06:32,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 73 conjunts are in the unsatisfiable core [2022-01-10 06:06:32,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:06:32,705 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-10 06:06:32,705 INFO L387 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 [2022-01-10 06:06:32,850 INFO L387 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 0 case distinctions, treesize of input 15 treesize of output 7 [2022-01-10 06:06:32,860 INFO L387 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 7 treesize of output 3 [2022-01-10 06:06:39,751 INFO L353 Elim1Store]: treesize reduction 219, result has 14.5 percent of original size [2022-01-10 06:06:39,751 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 129 treesize of output 100 [2022-01-10 06:06:39,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 06:06:59,389 WARN L228 SmtUtils]: Spent 19.58s on a formula simplification. DAG size of input: 28 DAG size of output: 25 (called from [L 350] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-01-10 06:06:59,390 INFO L353 Elim1Store]: treesize reduction 51, result has 55.3 percent of original size [2022-01-10 06:06:59,391 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 107 [2022-01-10 06:06:59,473 INFO L353 Elim1Store]: treesize reduction 18, result has 50.0 percent of original size [2022-01-10 06:06:59,474 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 152 treesize of output 148 [2022-01-10 06:06:59,586 INFO L353 Elim1Store]: treesize reduction 18, result has 62.5 percent of original size [2022-01-10 06:06:59,587 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 91 treesize of output 106 [2022-01-10 06:06:59,803 INFO L353 Elim1Store]: treesize reduction 14, result has 62.2 percent of original size [2022-01-10 06:06:59,804 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 180 treesize of output 130 [2022-01-10 06:07:00,639 INFO L387 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 9 treesize of output 3 [2022-01-10 06:07:00,721 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-10 06:07:00,721 INFO L387 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 13 [2022-01-10 06:07:00,728 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-01-10 06:07:00,730 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-01-10 06:07:01,427 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:07:01,428 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:07:06,223 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v___ldv_list_add_~prev.offset_7 (_ BitVec 64)) (v___ldv_list_add_~new.offset_7 (_ BitVec 64)) (v_ArrVal_153 (Array (_ BitVec 64) (_ BitVec 64))) (v___ldv_list_add_~next.offset_7 (_ BitVec 64))) (= |c_~#mutexes~0.offset| (select (select (store (let ((.cse0 (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_~#drvlist~0.base|) |c_~#drvlist~0.offset|))) (store |c_#memory_$Pointer$.offset| .cse1 (store (select |c_#memory_$Pointer$.offset| .cse1) (bvadd (_ bv8 64) v___ldv_list_add_~next.offset_7) v___ldv_list_add_~new.offset_7))))) (store .cse0 |c_ULTIMATE.start_foo_~me~0#1.base| (store (store (select .cse0 |c_ULTIMATE.start_foo_~me~0#1.base|) v___ldv_list_add_~new.offset_7 v___ldv_list_add_~next.offset_7) (bvadd (_ bv8 64) v___ldv_list_add_~new.offset_7) v___ldv_list_add_~prev.offset_7))) |c_~#drvlist~0.base| v_ArrVal_153) |c_~#mutexes~0.base|) |c_~#mutexes~0.offset|))) (forall ((v___ldv_list_add_~new.offset_7 (_ BitVec 64)) (v_ArrVal_154 (Array (_ BitVec 64) (_ BitVec 64))) (v___ldv_list_add_~next.offset_7 (_ BitVec 64))) (= (select (select (store (let ((.cse3 (select (select |c_#memory_$Pointer$.base| |c_~#drvlist~0.base|) |c_~#drvlist~0.offset|))) (let ((.cse2 (store |c_#memory_$Pointer$.base| .cse3 (store (select |c_#memory_$Pointer$.base| .cse3) (bvadd (_ bv8 64) v___ldv_list_add_~next.offset_7) |c_ULTIMATE.start_foo_~me~0#1.base|)))) (store .cse2 |c_ULTIMATE.start_foo_~me~0#1.base| (store (store (select .cse2 |c_ULTIMATE.start_foo_~me~0#1.base|) v___ldv_list_add_~new.offset_7 .cse3) (bvadd (_ bv8 64) v___ldv_list_add_~new.offset_7) |c_~#drvlist~0.base|)))) |c_~#drvlist~0.base| v_ArrVal_154) |c_~#mutexes~0.base|) |c_~#mutexes~0.offset|) |c_~#mutexes~0.base|))) is different from false [2022-01-10 06:07:06,254 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:07:06,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2019729627] [2022-01-10 06:07:06,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2019729627] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 06:07:06,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [482106096] [2022-01-10 06:07:06,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:07:06,255 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-01-10 06:07:06,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2022-01-10 06:07:06,257 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-01-10 06:07:06,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-01-10 06:07:06,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:07:06,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 64 conjunts are in the unsatisfiable core [2022-01-10 06:07:06,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:07:08,052 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-10 06:07:08,052 INFO L387 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 14 treesize of output 14 [2022-01-10 06:07:08,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 06:07:08,748 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 10 [2022-01-10 06:07:08,757 INFO L387 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 0 case distinctions, treesize of input 15 treesize of output 7 [2022-01-10 06:07:10,432 INFO L353 Elim1Store]: treesize reduction 59, result has 20.3 percent of original size [2022-01-10 06:07:10,432 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 71 treesize of output 69 [2022-01-10 06:07:10,443 INFO L387 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 33 treesize of output 27 [2022-01-10 06:07:10,501 INFO L353 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-01-10 06:07:10,502 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 55 treesize of output 71 [2022-01-10 06:07:10,516 INFO L387 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 [2022-01-10 06:07:10,528 INFO L387 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 [2022-01-10 06:07:10,541 INFO L387 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 [2022-01-10 06:07:10,612 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2022-01-10 06:07:10,619 INFO L387 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 [2022-01-10 06:07:10,674 INFO L387 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 0 case distinctions, treesize of input 22 treesize of output 16 [2022-01-10 06:07:10,680 INFO L387 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 [2022-01-10 06:07:11,719 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:07:11,720 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:07:12,729 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_248 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_250 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_253 (Array (_ BitVec 64) (_ BitVec 64)))) (= (select (select (store (store (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_~#drvlist~0.base|) |c_~#drvlist~0.offset|) v_ArrVal_250) |c_ULTIMATE.start_foo_~me~0#1.base| v_ArrVal_248) |c_~#drvlist~0.base| v_ArrVal_253) |c_~#mutexes~0.base|) |c_~#mutexes~0.offset|) |c_~#mutexes~0.base|)) (forall ((v_ArrVal_249 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_252 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_251 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_247 (Array (_ BitVec 64) (_ BitVec 64)))) (= |c_~#mutexes~0.offset| (select (select (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_~#drvlist~0.base|) |c_~#drvlist~0.offset|))) (store (store (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_249) |c_ULTIMATE.start_foo_~me~0#1.base| v_ArrVal_252) |c_~#drvlist~0.base| (store (select (store (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_247) |c_ULTIMATE.start_foo_~me~0#1.base| v_ArrVal_251) |c_~#drvlist~0.base|) |c_~#drvlist~0.offset| (bvadd (_ bv8 64) |c_ULTIMATE.start_foo_~me~0#1.offset|)))) |c_~#mutexes~0.base|) |c_~#mutexes~0.offset|)))) is different from false [2022-01-10 06:07:12,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [482106096] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 06:07:12,734 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:07:12,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 28 [2022-01-10 06:07:12,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106946340] [2022-01-10 06:07:12,735 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:07:12,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-01-10 06:07:12,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:07:12,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-01-10 06:07:12,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=813, Unknown=62, NotChecked=122, Total=1122 [2022-01-10 06:07:12,737 INFO L87 Difference]: Start difference. First operand 74 states and 87 transitions. Second operand has 29 states, 25 states have (on average 1.84) internal successors, (46), 22 states have internal predecessors, (46), 8 states have call successors, (8), 6 states have call predecessors, (8), 8 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2022-01-10 06:07:24,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:07:24,597 INFO L93 Difference]: Finished difference Result 203 states and 246 transitions. [2022-01-10 06:07:24,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 06:07:24,598 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 25 states have (on average 1.84) internal successors, (46), 22 states have internal predecessors, (46), 8 states have call successors, (8), 6 states have call predecessors, (8), 8 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) Word has length 32 [2022-01-10 06:07:24,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:07:24,599 INFO L225 Difference]: With dead ends: 203 [2022-01-10 06:07:24,599 INFO L226 Difference]: Without dead ends: 145 [2022-01-10 06:07:24,601 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 371 ImplicationChecksByTransitivity, 15.6s TimeCoverageRelationStatistics Valid=256, Invalid=1592, Unknown=140, NotChecked=174, Total=2162 [2022-01-10 06:07:24,601 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 227 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 686 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 1124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 370 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-01-10 06:07:24,602 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [233 Valid, 505 Invalid, 1124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 686 Invalid, 0 Unknown, 370 Unchecked, 2.9s Time] [2022-01-10 06:07:24,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2022-01-10 06:07:24,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 127. [2022-01-10 06:07:24,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 96 states have (on average 1.2083333333333333) internal successors, (116), 102 states have internal predecessors, (116), 17 states have call successors, (17), 9 states have call predecessors, (17), 11 states have return successors, (21), 16 states have call predecessors, (21), 17 states have call successors, (21) [2022-01-10 06:07:24,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 154 transitions. [2022-01-10 06:07:24,617 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 154 transitions. Word has length 32 [2022-01-10 06:07:24,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:07:24,618 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 154 transitions. [2022-01-10 06:07:24,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 25 states have (on average 1.84) internal successors, (46), 22 states have internal predecessors, (46), 8 states have call successors, (8), 6 states have call predecessors, (8), 8 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2022-01-10 06:07:24,618 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 154 transitions. [2022-01-10 06:07:24,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-01-10 06:07:24,619 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:07:24,619 INFO L514 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] [2022-01-10 06:07:24,631 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2022-01-10 06:07:24,831 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-01-10 06:07:25,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:07:25,024 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:07:25,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:07:25,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1853856721, now seen corresponding path program 1 times [2022-01-10 06:07:25,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:07:25,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [480446839] [2022-01-10 06:07:25,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:07:25,025 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:07:25,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:07:25,026 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:07:25,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-01-10 06:07:25,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:07:25,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-10 06:07:25,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:07:25,251 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-10 06:07:25,252 INFO L387 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 [2022-01-10 06:07:25,542 INFO L353 Elim1Store]: treesize reduction 117, result has 35.4 percent of original size [2022-01-10 06:07:25,543 INFO L387 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 182 [2022-01-10 06:07:25,553 INFO L387 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 [2022-01-10 06:07:25,569 INFO L387 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 [2022-01-10 06:07:25,580 INFO L387 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 [2022-01-10 06:07:26,439 INFO L353 Elim1Store]: treesize reduction 9, result has 47.1 percent of original size [2022-01-10 06:07:26,440 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 29 [2022-01-10 06:07:26,459 INFO L387 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 [2022-01-10 06:07:26,667 INFO L387 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 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-10 06:07:26,675 INFO L387 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 [2022-01-10 06:07:26,804 INFO L387 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 7 treesize of output 3 [2022-01-10 06:07:26,828 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 06:07:26,829 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 35 treesize of output 39 [2022-01-10 06:07:26,853 INFO L387 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 [2022-01-10 06:07:26,990 INFO L387 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 [2022-01-10 06:07:27,024 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:07:27,024 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:07:27,578 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 06:07:27,578 INFO L387 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 [2022-01-10 06:07:27,589 INFO L387 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 902 treesize of output 870 [2022-01-10 06:07:27,602 INFO L387 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 958 treesize of output 942 [2022-01-10 06:07:27,613 INFO L387 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 934 [2022-01-10 06:07:27,624 INFO L387 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 934 treesize of output 930 [2022-01-10 06:07:27,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 06:07:28,029 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 06:07:28,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 06:07:28,236 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:07:28,237 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:07:28,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [480446839] [2022-01-10 06:07:28,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [480446839] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 06:07:28,237 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:07:28,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2022-01-10 06:07:28,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559739834] [2022-01-10 06:07:28,237 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:07:28,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-10 06:07:28,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:07:28,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-10 06:07:28,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=529, Unknown=0, NotChecked=0, Total=600 [2022-01-10 06:07:28,239 INFO L87 Difference]: Start difference. First operand 127 states and 154 transitions. Second operand has 25 states, 21 states have (on average 2.0476190476190474) internal successors, (43), 19 states have internal predecessors, (43), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-01-10 06:07:32,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:07:32,140 INFO L93 Difference]: Finished difference Result 321 states and 400 transitions. [2022-01-10 06:07:32,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-10 06:07:32,141 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 21 states have (on average 2.0476190476190474) internal successors, (43), 19 states have internal predecessors, (43), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 31 [2022-01-10 06:07:32,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:07:32,143 INFO L225 Difference]: With dead ends: 321 [2022-01-10 06:07:32,143 INFO L226 Difference]: Without dead ends: 269 [2022-01-10 06:07:32,144 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=283, Invalid=1609, Unknown=0, NotChecked=0, Total=1892 [2022-01-10 06:07:32,145 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 556 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 930 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 557 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 1129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 930 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-01-10 06:07:32,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [557 Valid, 490 Invalid, 1129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 930 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-01-10 06:07:32,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2022-01-10 06:07:32,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 184. [2022-01-10 06:07:32,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 144 states have (on average 1.2430555555555556) internal successors, (179), 151 states have internal predecessors, (179), 22 states have call successors, (22), 12 states have call predecessors, (22), 15 states have return successors, (29), 21 states have call predecessors, (29), 22 states have call successors, (29) [2022-01-10 06:07:32,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 230 transitions. [2022-01-10 06:07:32,167 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 230 transitions. Word has length 31 [2022-01-10 06:07:32,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:07:32,167 INFO L470 AbstractCegarLoop]: Abstraction has 184 states and 230 transitions. [2022-01-10 06:07:32,167 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 21 states have (on average 2.0476190476190474) internal successors, (43), 19 states have internal predecessors, (43), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-01-10 06:07:32,167 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 230 transitions. [2022-01-10 06:07:32,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-01-10 06:07:32,168 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:07:32,169 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:07:32,195 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-01-10 06:07:32,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:07:32,383 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:07:32,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:07:32,383 INFO L85 PathProgramCache]: Analyzing trace with hash -923734561, now seen corresponding path program 2 times [2022-01-10 06:07:32,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:07:32,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1900340735] [2022-01-10 06:07:32,384 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 06:07:32,384 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:07:32,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:07:32,385 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:07:32,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-01-10 06:07:32,702 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-10 06:07:32,702 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 06:07:32,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 135 conjunts are in the unsatisfiable core [2022-01-10 06:07:32,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:07:33,090 INFO L353 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-01-10 06:07:33,090 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 17 treesize of output 24 [2022-01-10 06:07:33,242 INFO L387 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 7 treesize of output 3 [2022-01-10 06:07:33,267 INFO L387 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 0 case distinctions, treesize of input 15 treesize of output 7