./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-regression/test23-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-regression/test23-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6107b0424f9f7d96b4a493f3ee8e42c81c6509c50d1ec834cc7d1fa0b8a2c5d3 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 15:01:15,628 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 15:01:15,631 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 15:01:15,674 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 15:01:15,675 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 15:01:15,676 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 15:01:15,678 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 15:01:15,680 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 15:01:15,682 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 15:01:15,686 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 15:01:15,687 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 15:01:15,689 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 15:01:15,689 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 15:01:15,691 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 15:01:15,692 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 15:01:15,695 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 15:01:15,696 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 15:01:15,697 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 15:01:15,698 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 15:01:15,704 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 15:01:15,706 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 15:01:15,707 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 15:01:15,707 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 15:01:15,708 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 15:01:15,710 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 15:01:15,713 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 15:01:15,713 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 15:01:15,714 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 15:01:15,715 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 15:01:15,715 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 15:01:15,716 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 15:01:15,717 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 15:01:15,718 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 15:01:15,719 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 15:01:15,720 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 15:01:15,721 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 15:01:15,722 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 15:01:15,722 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 15:01:15,722 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 15:01:15,723 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 15:01:15,723 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 15:01:15,725 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 15:01:15,726 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 15:01:15,756 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 15:01:15,757 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 15:01:15,757 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 15:01:15,757 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 15:01:15,759 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 15:01:15,759 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 15:01:15,760 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 15:01:15,760 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 15:01:15,760 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 15:01:15,761 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 15:01:15,762 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 15:01:15,762 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 15:01:15,762 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 15:01:15,762 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 15:01:15,762 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 15:01:15,763 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 15:01:15,763 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 15:01:15,763 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 15:01:15,763 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 15:01:15,763 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 15:01:15,764 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 15:01:15,764 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 15:01:15,764 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 15:01:15,764 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 15:01:15,764 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 15:01:15,765 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 15:01:15,765 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 15:01:15,765 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 15:01:15,765 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 15:01:15,765 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 15:01:15,766 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 15:01:15,766 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 15:01:15,766 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 15:01:15,766 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6107b0424f9f7d96b4a493f3ee8e42c81c6509c50d1ec834cc7d1fa0b8a2c5d3 [2022-07-13 15:01:16,000 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 15:01:16,024 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 15:01:16,027 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 15:01:16,029 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 15:01:16,029 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 15:01:16,031 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/test23-2.c [2022-07-13 15:01:16,095 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1234025ec/8ebbb3e7230c45ab8f370464033ae93c/FLAG985c76194 [2022-07-13 15:01:16,454 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 15:01:16,454 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/test23-2.c [2022-07-13 15:01:16,459 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1234025ec/8ebbb3e7230c45ab8f370464033ae93c/FLAG985c76194 [2022-07-13 15:01:16,885 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1234025ec/8ebbb3e7230c45ab8f370464033ae93c [2022-07-13 15:01:16,887 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 15:01:16,888 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 15:01:16,892 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 15:01:16,893 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 15:01:16,896 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 15:01:16,896 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 03:01:16" (1/1) ... [2022-07-13 15:01:16,897 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c758370 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:01:16, skipping insertion in model container [2022-07-13 15:01:16,897 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 03:01:16" (1/1) ... [2022-07-13 15:01:16,904 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 15:01:16,918 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 15:01:17,074 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/test23-2.c[1070,1083] [2022-07-13 15:01:17,078 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 15:01:17,087 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 15:01:17,103 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/test23-2.c[1070,1083] [2022-07-13 15:01:17,104 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 15:01:17,114 INFO L208 MainTranslator]: Completed translation [2022-07-13 15:01:17,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:01:17 WrapperNode [2022-07-13 15:01:17,114 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 15:01:17,116 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 15:01:17,116 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 15:01:17,116 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 15:01:17,126 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:01:17" (1/1) ... [2022-07-13 15:01:17,134 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:01:17" (1/1) ... [2022-07-13 15:01:17,155 INFO L137 Inliner]: procedures = 16, calls = 21, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 73 [2022-07-13 15:01:17,155 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 15:01:17,156 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 15:01:17,156 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 15:01:17,157 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 15:01:17,162 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:01:17" (1/1) ... [2022-07-13 15:01:17,163 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:01:17" (1/1) ... [2022-07-13 15:01:17,164 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:01:17" (1/1) ... [2022-07-13 15:01:17,165 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:01:17" (1/1) ... [2022-07-13 15:01:17,169 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:01:17" (1/1) ... [2022-07-13 15:01:17,172 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:01:17" (1/1) ... [2022-07-13 15:01:17,173 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:01:17" (1/1) ... [2022-07-13 15:01:17,175 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 15:01:17,175 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 15:01:17,176 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 15:01:17,176 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 15:01:17,178 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:01:17" (1/1) ... [2022-07-13 15:01:17,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 15:01:17,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 15:01:17,208 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-13 15:01:17,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-13 15:01:17,236 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 15:01:17,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 15:01:17,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 15:01:17,237 INFO L130 BoogieDeclarations]: Found specification of procedure get_dummy [2022-07-13 15:01:17,237 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dummy [2022-07-13 15:01:17,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 15:01:17,237 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 15:01:17,237 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 15:01:17,306 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 15:01:17,307 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 15:01:17,457 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 15:01:17,477 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 15:01:17,477 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-13 15:01:17,479 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 03:01:17 BoogieIcfgContainer [2022-07-13 15:01:17,479 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 15:01:17,481 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 15:01:17,482 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 15:01:17,485 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 15:01:17,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 03:01:16" (1/3) ... [2022-07-13 15:01:17,486 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f9aa67b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 03:01:17, skipping insertion in model container [2022-07-13 15:01:17,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:01:17" (2/3) ... [2022-07-13 15:01:17,486 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f9aa67b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 03:01:17, skipping insertion in model container [2022-07-13 15:01:17,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 03:01:17" (3/3) ... [2022-07-13 15:01:17,488 INFO L111 eAbstractionObserver]: Analyzing ICFG test23-2.c [2022-07-13 15:01:17,500 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 15:01:17,500 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 15:01:17,544 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 15:01:17,552 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3f0625e5, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5b0958dc [2022-07-13 15:01:17,552 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 15:01:17,556 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 15:01:17,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-07-13 15:01:17,563 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 15:01:17,563 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 15:01:17,564 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 15:01:17,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 15:01:17,569 INFO L85 PathProgramCache]: Analyzing trace with hash -203522095, now seen corresponding path program 1 times [2022-07-13 15:01:17,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 15:01:17,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887140698] [2022-07-13 15:01:17,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 15:01:17,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 15:01:17,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 15:01:17,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 15:01:17,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 15:01:17,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 15:01:17,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 15:01:17,819 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-13 15:01:17,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 15:01:17,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887140698] [2022-07-13 15:01:17,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887140698] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 15:01:17,821 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 15:01:17,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 15:01:17,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421935671] [2022-07-13 15:01:17,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 15:01:17,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-13 15:01:17,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 15:01:17,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-13 15:01:17,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 15:01:17,861 INFO L87 Difference]: Start difference. First operand has 23 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-13 15:01:17,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 15:01:17,879 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2022-07-13 15:01:17,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-13 15:01:17,882 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 21 [2022-07-13 15:01:17,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 15:01:17,889 INFO L225 Difference]: With dead ends: 32 [2022-07-13 15:01:17,889 INFO L226 Difference]: Without dead ends: 19 [2022-07-13 15:01:17,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 15:01:17,897 INFO L413 NwaCegarLoop]: 26 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, 26 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 15:01:17,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 15:01:17,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-07-13 15:01:17,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-07-13 15:01:17,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 15:01:17,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2022-07-13 15:01:17,933 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 21 [2022-07-13 15:01:17,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 15:01:17,934 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2022-07-13 15:01:17,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-13 15:01:17,935 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-07-13 15:01:17,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-07-13 15:01:17,940 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 15:01:17,940 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 15:01:17,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 15:01:17,941 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 15:01:17,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 15:01:17,942 INFO L85 PathProgramCache]: Analyzing trace with hash 2074741797, now seen corresponding path program 1 times [2022-07-13 15:01:17,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 15:01:17,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842541143] [2022-07-13 15:01:17,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 15:01:17,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 15:01:18,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 15:01:18,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 15:01:18,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 15:01:18,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 15:01:18,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 15:01:18,385 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-13 15:01:18,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 15:01:18,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842541143] [2022-07-13 15:01:18,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842541143] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 15:01:18,386 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 15:01:18,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-13 15:01:18,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837022856] [2022-07-13 15:01:18,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 15:01:18,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-13 15:01:18,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 15:01:18,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-13 15:01:18,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-07-13 15:01:18,390 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 11 states, 10 states have (on average 1.5) internal successors, (15), 8 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 15:01:18,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 15:01:18,619 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2022-07-13 15:01:18,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-13 15:01:18,620 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.5) internal successors, (15), 8 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2022-07-13 15:01:18,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 15:01:18,623 INFO L225 Difference]: With dead ends: 44 [2022-07-13 15:01:18,623 INFO L226 Difference]: Without dead ends: 39 [2022-07-13 15:01:18,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2022-07-13 15:01:18,628 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 41 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 15:01:18,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 124 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 15:01:18,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-07-13 15:01:18,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 21. [2022-07-13 15:01:18,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 15:01:18,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2022-07-13 15:01:18,644 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 22 [2022-07-13 15:01:18,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 15:01:18,645 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2022-07-13 15:01:18,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.5) internal successors, (15), 8 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 15:01:18,645 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2022-07-13 15:01:18,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-07-13 15:01:18,646 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 15:01:18,646 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 15:01:18,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 15:01:18,647 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 15:01:18,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 15:01:18,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1823127190, now seen corresponding path program 1 times [2022-07-13 15:01:18,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 15:01:18,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908717991] [2022-07-13 15:01:18,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 15:01:18,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 15:01:18,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 15:01:18,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 15:01:18,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 15:01:18,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 15:01:18,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 15:01:18,918 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-13 15:01:18,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 15:01:18,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908717991] [2022-07-13 15:01:18,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908717991] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 15:01:18,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675233670] [2022-07-13 15:01:18,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 15:01:18,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 15:01:18,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 15:01:18,927 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 15:01:18,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 15:01:19,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 15:01:19,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 39 conjunts are in the unsatisfiable core [2022-07-13 15:01:19,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 15:01:19,512 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 23 treesize of output 19 [2022-07-13 15:01:19,737 INFO L356 Elim1Store]: treesize reduction 25, result has 10.7 percent of original size [2022-07-13 15:01:19,737 INFO L390 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 37 treesize of output 12 [2022-07-13 15:01:19,743 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 15:01:19,743 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 15:01:19,831 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 43 [2022-07-13 15:01:20,270 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 15:01:20,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1675233670] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 15:01:20,271 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 15:01:20,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 35 [2022-07-13 15:01:20,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215307300] [2022-07-13 15:01:20,272 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 15:01:20,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-07-13 15:01:20,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 15:01:20,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-07-13 15:01:20,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=1073, Unknown=0, NotChecked=0, Total=1190 [2022-07-13 15:01:20,275 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand has 35 states, 32 states have (on average 1.5) internal successors, (48), 29 states have internal predecessors, (48), 6 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-13 15:01:21,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 15:01:21,608 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2022-07-13 15:01:21,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-13 15:01:21,609 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 32 states have (on average 1.5) internal successors, (48), 29 states have internal predecessors, (48), 6 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 24 [2022-07-13 15:01:21,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 15:01:21,610 INFO L225 Difference]: With dead ends: 59 [2022-07-13 15:01:21,610 INFO L226 Difference]: Without dead ends: 54 [2022-07-13 15:01:21,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 650 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=538, Invalid=3122, Unknown=0, NotChecked=0, Total=3660 [2022-07-13 15:01:21,612 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 113 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 62 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 15:01:21,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 322 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 399 Invalid, 0 Unknown, 62 Unchecked, 0.3s Time] [2022-07-13 15:01:21,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-07-13 15:01:21,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 27. [2022-07-13 15:01:21,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 23 states have (on average 1.0869565217391304) internal successors, (25), 23 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 15:01:21,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2022-07-13 15:01:21,632 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 24 [2022-07-13 15:01:21,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 15:01:21,632 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2022-07-13 15:01:21,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 32 states have (on average 1.5) internal successors, (48), 29 states have internal predecessors, (48), 6 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-13 15:01:21,634 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2022-07-13 15:01:21,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-07-13 15:01:21,634 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 15:01:21,635 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 15:01:21,663 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-13 15:01:21,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 15:01:21,852 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 15:01:21,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 15:01:21,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1605447239, now seen corresponding path program 2 times [2022-07-13 15:01:21,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 15:01:21,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275288390] [2022-07-13 15:01:21,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 15:01:21,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 15:01:21,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 15:01:22,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 15:01:22,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 15:01:22,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 15:01:22,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 15:01:22,096 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-13 15:01:22,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 15:01:22,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275288390] [2022-07-13 15:01:22,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275288390] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 15:01:22,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [805259837] [2022-07-13 15:01:22,102 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 15:01:22,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 15:01:22,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 15:01:22,104 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 15:01:22,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 15:01:22,168 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 15:01:22,169 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 15:01:22,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 17 conjunts are in the unsatisfiable core [2022-07-13 15:01:22,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 15:01:22,186 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 23 treesize of output 19 [2022-07-13 15:01:22,325 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-07-13 15:01:22,329 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-13 15:01:22,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 15:01:22,452 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-13 15:01:22,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [805259837] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 15:01:22,453 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 15:01:22,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 8, 8] total 23 [2022-07-13 15:01:22,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257137872] [2022-07-13 15:01:22,454 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 15:01:22,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-13 15:01:22,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 15:01:22,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-13 15:01:22,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=393, Unknown=0, NotChecked=0, Total=506 [2022-07-13 15:01:22,455 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand has 23 states, 22 states have (on average 2.0454545454545454) internal successors, (45), 21 states have internal predecessors, (45), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-07-13 15:01:23,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 15:01:23,396 INFO L93 Difference]: Finished difference Result 80 states and 96 transitions. [2022-07-13 15:01:23,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-07-13 15:01:23,397 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.0454545454545454) internal successors, (45), 21 states have internal predecessors, (45), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 30 [2022-07-13 15:01:23,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 15:01:23,398 INFO L225 Difference]: With dead ends: 80 [2022-07-13 15:01:23,398 INFO L226 Difference]: Without dead ends: 75 [2022-07-13 15:01:23,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 55 SyntacticMatches, 3 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1214 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1022, Invalid=3400, Unknown=0, NotChecked=0, Total=4422 [2022-07-13 15:01:23,400 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 89 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 15:01:23,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 105 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 151 Invalid, 0 Unknown, 4 Unchecked, 0.1s Time] [2022-07-13 15:01:23,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-07-13 15:01:23,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 39. [2022-07-13 15:01:23,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 35 states have internal predecessors, (37), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 15:01:23,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2022-07-13 15:01:23,409 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 30 [2022-07-13 15:01:23,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 15:01:23,410 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2022-07-13 15:01:23,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.0454545454545454) internal successors, (45), 21 states have internal predecessors, (45), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-07-13 15:01:23,410 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2022-07-13 15:01:23,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-07-13 15:01:23,411 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 15:01:23,411 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 15:01:23,441 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-13 15:01:23,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-07-13 15:01:23,636 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 15:01:23,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 15:01:23,637 INFO L85 PathProgramCache]: Analyzing trace with hash -2039796585, now seen corresponding path program 3 times [2022-07-13 15:01:23,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 15:01:23,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80884917] [2022-07-13 15:01:23,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 15:01:23,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 15:01:23,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 15:01:23,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 15:01:23,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 15:01:23,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 15:01:23,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 15:01:23,886 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-13 15:01:23,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 15:01:23,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80884917] [2022-07-13 15:01:23,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80884917] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 15:01:23,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2106199103] [2022-07-13 15:01:23,887 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-13 15:01:23,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 15:01:23,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 15:01:23,892 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 15:01:23,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 15:01:23,978 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-07-13 15:01:23,978 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 15:01:23,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 32 conjunts are in the unsatisfiable core [2022-07-13 15:01:23,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 15:01:23,993 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 30 treesize of output 26 [2022-07-13 15:01:26,520 INFO L356 Elim1Store]: treesize reduction 68, result has 9.3 percent of original size [2022-07-13 15:01:26,521 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 93 treesize of output 43 [2022-07-13 15:01:26,533 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 19 proven. 10 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-07-13 15:01:26,533 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 15:01:27,378 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-07-13 15:01:27,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2106199103] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 15:01:27,379 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 15:01:27,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 9, 9] total 25 [2022-07-13 15:01:27,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045183721] [2022-07-13 15:01:27,379 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 15:01:27,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-07-13 15:01:27,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 15:01:27,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-07-13 15:01:27,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=538, Unknown=2, NotChecked=0, Total=600 [2022-07-13 15:01:27,381 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand has 25 states, 25 states have (on average 2.08) internal successors, (52), 25 states have internal predecessors, (52), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-13 15:01:36,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 15:01:36,572 INFO L93 Difference]: Finished difference Result 41 states and 44 transitions. [2022-07-13 15:01:36,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-13 15:01:36,572 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.08) internal successors, (52), 25 states have internal predecessors, (52), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 42 [2022-07-13 15:01:36,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 15:01:36,573 INFO L225 Difference]: With dead ends: 41 [2022-07-13 15:01:36,573 INFO L226 Difference]: Without dead ends: 0 [2022-07-13 15:01:36,574 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 80 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 12.0s TimeCoverageRelationStatistics Valid=297, Invalid=2050, Unknown=5, NotChecked=0, Total=2352 [2022-07-13 15:01:36,575 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 39 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 39 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 15:01:36,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 161 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 248 Invalid, 0 Unknown, 39 Unchecked, 0.2s Time] [2022-07-13 15:01:36,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-13 15:01:36,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-13 15:01:36,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 15:01:36,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-13 15:01:36,576 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 42 [2022-07-13 15:01:36,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 15:01:36,577 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-13 15:01:36,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.08) internal successors, (52), 25 states have internal predecessors, (52), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-13 15:01:36,577 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-13 15:01:36,577 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-13 15:01:36,579 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-13 15:01:36,597 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-13 15:01:36,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 15:01:36,782 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-07-13 15:01:37,162 INFO L899 garLoopResultBuilder]: For program point get_dummyFINAL(lines 23 26) no Hoare annotation was computed. [2022-07-13 15:01:37,163 INFO L899 garLoopResultBuilder]: For program point L25-1(line 25) no Hoare annotation was computed. [2022-07-13 15:01:37,163 INFO L902 garLoopResultBuilder]: At program point get_dummyENTRY(lines 23 26) the Hoare annotation is: true [2022-07-13 15:01:37,163 INFO L899 garLoopResultBuilder]: For program point get_dummyEXIT(lines 23 26) no Hoare annotation was computed. [2022-07-13 15:01:37,163 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-07-13 15:01:37,163 INFO L895 garLoopResultBuilder]: At program point L46(lines 34 54) the Hoare annotation is: false [2022-07-13 15:01:37,163 INFO L899 garLoopResultBuilder]: For program point L42-1(lines 42 44) no Hoare annotation was computed. [2022-07-13 15:01:37,163 INFO L895 garLoopResultBuilder]: At program point L42-3(lines 42 44) the Hoare annotation is: (and (= |~#d1~0.base| 4) (or (not (<= |ULTIMATE.start_main_~pd1~0#1.offset| |ULTIMATE.start_main_~pd2~0#1.offset|)) (and (= |ULTIMATE.start_main_~pd1~0#1.offset| |ULTIMATE.start_main_~pd2~0#1.offset|) (= |ULTIMATE.start_main_~pd2~0#1.base| |ULTIMATE.start_main_~pd1~0#1.base|))) (= 0 (mod (+ (* 3 |ULTIMATE.start_main_~pd2~0#1.offset|) |ULTIMATE.start_main_~pa~0#1.offset|) 4)) (< |ULTIMATE.start_main_~i~0#1| (+ (select (select |#memory_int| |ULTIMATE.start_main_~pa~0#1.base|) |ULTIMATE.start_main_~pa~0#1.offset|) 1)) (let ((.cse0 (div (+ (* (- 1) |ULTIMATE.start_main_~pd2~0#1.offset|) |ULTIMATE.start_main_~pa~0#1.offset| (- 8)) 4))) (= .cse0 (select (select |#memory_int| |ULTIMATE.start_main_~pd2~0#1.base|) (+ (* .cse0 4) 8 |ULTIMATE.start_main_~pd2~0#1.offset|)))) (= |~#d1~0.offset| 0) (= |ULTIMATE.start_main_~pa~0#1.base| |ULTIMATE.start_main_~pd2~0#1.base|)) [2022-07-13 15:01:37,164 INFO L899 garLoopResultBuilder]: For program point L38(lines 38 48) no Hoare annotation was computed. [2022-07-13 15:01:37,164 INFO L899 garLoopResultBuilder]: For program point L42-4(lines 42 44) no Hoare annotation was computed. [2022-07-13 15:01:37,164 INFO L895 garLoopResultBuilder]: At program point L36(line 36) the Hoare annotation is: (and (= |~#d2~0.offset| |~#d1~0.offset|) (= |~#d1~0.base| 4) (= |~#d1~0.offset| 0)) [2022-07-13 15:01:37,164 INFO L899 garLoopResultBuilder]: For program point L38-2(lines 38 48) no Hoare annotation was computed. [2022-07-13 15:01:37,164 INFO L899 garLoopResultBuilder]: For program point L36-1(line 36) no Hoare annotation was computed. [2022-07-13 15:01:37,164 INFO L895 garLoopResultBuilder]: At program point L36-2(line 36) the Hoare annotation is: (and (= |~#d2~0.offset| |~#d1~0.offset|) (= |~#d1~0.base| 4) (= |~#d1~0.offset| 0)) [2022-07-13 15:01:37,164 INFO L899 garLoopResultBuilder]: For program point L36-3(line 36) no Hoare annotation was computed. [2022-07-13 15:01:37,164 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-07-13 15:01:37,164 INFO L895 garLoopResultBuilder]: At program point L30(lines 28 31) the Hoare annotation is: (and (= |~#d1~0.base| 4) (<= 1 |ULTIMATE.start_check_#res#1|) (or (not (<= |ULTIMATE.start_main_~pd1~0#1.offset| |ULTIMATE.start_main_~pd2~0#1.offset|)) (and (= |ULTIMATE.start_main_~pd1~0#1.offset| |ULTIMATE.start_main_~pd2~0#1.offset|) (= |ULTIMATE.start_main_~pd2~0#1.base| |ULTIMATE.start_main_~pd1~0#1.base|))) (= |~#d1~0.offset| 0)) [2022-07-13 15:01:37,164 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-07-13 15:01:37,165 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-07-13 15:01:37,165 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 52) no Hoare annotation was computed. [2022-07-13 15:01:37,165 INFO L902 garLoopResultBuilder]: At program point L53(lines 33 54) the Hoare annotation is: true [2022-07-13 15:01:37,165 INFO L899 garLoopResultBuilder]: For program point L14(lines 14 21) no Hoare annotation was computed. [2022-07-13 15:01:37,165 INFO L899 garLoopResultBuilder]: For program point L45(lines 45 47) no Hoare annotation was computed. [2022-07-13 15:01:37,167 INFO L356 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2022-07-13 15:01:37,169 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-13 15:01:37,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.07 03:01:37 BoogieIcfgContainer [2022-07-13 15:01:37,189 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-13 15:01:37,190 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-13 15:01:37,190 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-13 15:01:37,190 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-13 15:01:37,191 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 03:01:17" (3/4) ... [2022-07-13 15:01:37,193 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-13 15:01:37,199 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure get_dummy [2022-07-13 15:01:37,206 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2022-07-13 15:01:37,206 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-07-13 15:01:37,206 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-13 15:01:37,207 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-13 15:01:37,231 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((d1 == 4 && 1 <= \result) && (!(pd1 <= pd2) || (pd1 == pd2 && pd2 == pd1))) && d1 == 0 [2022-07-13 15:01:37,244 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-13 15:01:37,245 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-13 15:01:37,245 INFO L158 Benchmark]: Toolchain (without parser) took 20357.20ms. Allocated memory was 109.1MB in the beginning and 161.5MB in the end (delta: 52.4MB). Free memory was 78.9MB in the beginning and 74.1MB in the end (delta: 4.8MB). Peak memory consumption was 57.3MB. Max. memory is 16.1GB. [2022-07-13 15:01:37,246 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 109.1MB. Free memory was 63.7MB in the beginning and 63.6MB in the end (delta: 45.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 15:01:37,246 INFO L158 Benchmark]: CACSL2BoogieTranslator took 222.42ms. Allocated memory is still 109.1MB. Free memory was 78.6MB in the beginning and 83.2MB in the end (delta: -4.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-13 15:01:37,246 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.13ms. Allocated memory is still 109.1MB. Free memory was 83.2MB in the beginning and 81.3MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 15:01:37,247 INFO L158 Benchmark]: Boogie Preprocessor took 18.54ms. Allocated memory is still 109.1MB. Free memory was 81.3MB in the beginning and 80.4MB in the end (delta: 934.4kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 15:01:37,248 INFO L158 Benchmark]: RCFGBuilder took 303.89ms. Allocated memory is still 109.1MB. Free memory was 80.0MB in the beginning and 69.2MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-13 15:01:37,248 INFO L158 Benchmark]: TraceAbstraction took 19708.67ms. Allocated memory was 109.1MB in the beginning and 161.5MB in the end (delta: 52.4MB). Free memory was 68.8MB in the beginning and 77.3MB in the end (delta: -8.4MB). Peak memory consumption was 83.9MB. Max. memory is 16.1GB. [2022-07-13 15:01:37,248 INFO L158 Benchmark]: Witness Printer took 54.85ms. Allocated memory is still 161.5MB. Free memory was 77.3MB in the beginning and 74.1MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-13 15:01:37,252 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 109.1MB. Free memory was 63.7MB in the beginning and 63.6MB in the end (delta: 45.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 222.42ms. Allocated memory is still 109.1MB. Free memory was 78.6MB in the beginning and 83.2MB in the end (delta: -4.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.13ms. Allocated memory is still 109.1MB. Free memory was 83.2MB in the beginning and 81.3MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 18.54ms. Allocated memory is still 109.1MB. Free memory was 81.3MB in the beginning and 80.4MB in the end (delta: 934.4kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 303.89ms. Allocated memory is still 109.1MB. Free memory was 80.0MB in the beginning and 69.2MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 19708.67ms. Allocated memory was 109.1MB in the beginning and 161.5MB in the end (delta: 52.4MB). Free memory was 68.8MB in the beginning and 77.3MB in the end (delta: -8.4MB). Peak memory consumption was 83.9MB. Max. memory is 16.1GB. * Witness Printer took 54.85ms. Allocated memory is still 161.5MB. Free memory was 77.3MB in the beginning and 74.1MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 52]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 19.6s, OverallIterations: 5, TraceHistogramMax: 11, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 11.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 292 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 282 mSDsluCounter, 738 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 105 IncrementalHoareTripleChecker+Unchecked, 652 mSDsCounter, 110 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 932 IncrementalHoareTripleChecker+Invalid, 1147 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 110 mSolverCounterUnsat, 86 mSDtfsCounter, 932 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 369 GetRequests, 173 SyntacticMatches, 8 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2216 ImplicationChecksByTransitivity, 15.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=4, InterpolantAutomatonStates: 123, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 81 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 8 PreInvPairs, 21 NumberOfFragments, 111 HoareAnnotationTreeSize, 8 FomulaSimplifications, 1056 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 7 FomulaSimplificationsInter, 2860 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 6.1s InterpolantComputationTime, 235 NumberOfCodeBlocks, 219 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 320 ConstructedInterpolants, 27 QuantifiedInterpolants, 3209 SizeOfPredicates, 46 NumberOfNonLiveVariables, 503 ConjunctsInSsa, 88 ConjunctsInUnsatCore, 11 InterpolantComputations, 2 PerfectInterpolantSequences, 219/440 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: ((d1 == 4 && 1 <= \result) && (!(pd1 <= pd2) || (pd1 == pd2 && pd2 == pd1))) && d1 == 0 - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 42]: Loop Invariant Derived loop invariant: (((((d1 == 4 && (!(pd1 <= pd2) || (pd1 == pd2 && pd2 == pd1))) && 0 == (3 * pd2 + pa) % 4) && i < unknown-#memory_int-unknown[pa][pa] + 1) && (-1 * pd2 + pa + -8) / 4 == unknown-#memory_int-unknown[pd2][(-1 * pd2 + pa + -8) / 4 * 4 + 8 + pd2]) && d1 == 0) && pa == pd2 - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-07-13 15:01:37,316 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE