./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-examples/standard_init3_ground-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 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/array-examples/standard_init3_ground-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e3a23c39a71f68ea97a16f1ff860e4af783e55492bb64ac88412e1e3f7ca41d5 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 09:04:01,604 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 09:04:01,606 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 09:04:01,669 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 09:04:01,669 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 09:04:01,671 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 09:04:01,673 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 09:04:01,677 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 09:04:01,679 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 09:04:01,685 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 09:04:01,686 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 09:04:01,687 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 09:04:01,689 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 09:04:01,690 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 09:04:01,691 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 09:04:01,693 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 09:04:01,696 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 09:04:01,698 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 09:04:01,699 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 09:04:01,701 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 09:04:01,705 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 09:04:01,707 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 09:04:01,707 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 09:04:01,709 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 09:04:01,709 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 09:04:01,712 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 09:04:01,713 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 09:04:01,713 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 09:04:01,715 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 09:04:01,715 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 09:04:01,716 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 09:04:01,716 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 09:04:01,718 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 09:04:01,718 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 09:04:01,719 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 09:04:01,719 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 09:04:01,720 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 09:04:01,720 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 09:04:01,720 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 09:04:01,721 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 09:04:01,721 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 09:04:01,723 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 09:04:01,724 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 09:04:01,755 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 09:04:01,756 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 09:04:01,756 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 09:04:01,756 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 09:04:01,757 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 09:04:01,757 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 09:04:01,758 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 09:04:01,758 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 09:04:01,758 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 09:04:01,759 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 09:04:01,760 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 09:04:01,760 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 09:04:01,760 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 09:04:01,760 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 09:04:01,760 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 09:04:01,760 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 09:04:01,761 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 09:04:01,761 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 09:04:01,761 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 09:04:01,761 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 09:04:01,761 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 09:04:01,761 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 09:04:01,762 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 09:04:01,762 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 09:04:01,762 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 09:04:01,762 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 09:04:01,762 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 09:04:01,763 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 09:04:01,763 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 09:04:01,763 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 09:04:01,763 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 09:04:01,763 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 09:04:01,764 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 09:04:01,764 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e3a23c39a71f68ea97a16f1ff860e4af783e55492bb64ac88412e1e3f7ca41d5 [2022-07-19 09:04:02,013 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 09:04:02,040 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 09:04:02,042 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 09:04:02,043 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 09:04:02,044 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 09:04:02,045 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/standard_init3_ground-2.i [2022-07-19 09:04:02,109 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b19609b47/f21f5f103d9f48f686a4416d777dddff/FLAG860847354 [2022-07-19 09:04:02,510 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 09:04:02,511 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_init3_ground-2.i [2022-07-19 09:04:02,518 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b19609b47/f21f5f103d9f48f686a4416d777dddff/FLAG860847354 [2022-07-19 09:04:02,915 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b19609b47/f21f5f103d9f48f686a4416d777dddff [2022-07-19 09:04:02,918 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 09:04:02,920 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 09:04:02,921 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 09:04:02,921 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 09:04:02,924 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 09:04:02,924 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:04:02" (1/1) ... [2022-07-19 09:04:02,925 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cf7ffe8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:04:02, skipping insertion in model container [2022-07-19 09:04:02,926 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:04:02" (1/1) ... [2022-07-19 09:04:02,932 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 09:04:02,946 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 09:04:03,148 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/array-examples/standard_init3_ground-2.i[816,829] [2022-07-19 09:04:03,167 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 09:04:03,174 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 09:04:03,186 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/array-examples/standard_init3_ground-2.i[816,829] [2022-07-19 09:04:03,201 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 09:04:03,215 INFO L208 MainTranslator]: Completed translation [2022-07-19 09:04:03,216 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:04:03 WrapperNode [2022-07-19 09:04:03,216 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 09:04:03,217 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 09:04:03,217 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 09:04:03,218 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 09:04:03,224 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:04:03" (1/1) ... [2022-07-19 09:04:03,230 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:04:03" (1/1) ... [2022-07-19 09:04:03,245 INFO L137 Inliner]: procedures = 15, calls = 14, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 54 [2022-07-19 09:04:03,246 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 09:04:03,248 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 09:04:03,248 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 09:04:03,248 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 09:04:03,254 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:04:03" (1/1) ... [2022-07-19 09:04:03,255 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:04:03" (1/1) ... [2022-07-19 09:04:03,258 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:04:03" (1/1) ... [2022-07-19 09:04:03,258 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:04:03" (1/1) ... [2022-07-19 09:04:03,262 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:04:03" (1/1) ... [2022-07-19 09:04:03,265 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:04:03" (1/1) ... [2022-07-19 09:04:03,266 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:04:03" (1/1) ... [2022-07-19 09:04:03,271 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 09:04:03,274 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 09:04:03,275 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 09:04:03,275 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 09:04:03,280 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:04:03" (1/1) ... [2022-07-19 09:04:03,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 09:04:03,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 09:04:03,313 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) [2022-07-19 09:04:03,335 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 [2022-07-19 09:04:03,351 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 09:04:03,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 09:04:03,352 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 09:04:03,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 09:04:03,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 09:04:03,352 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 09:04:03,352 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 09:04:03,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 09:04:03,411 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 09:04:03,413 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 09:04:03,573 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 09:04:03,579 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 09:04:03,588 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-07-19 09:04:03,590 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:04:03 BoogieIcfgContainer [2022-07-19 09:04:03,590 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 09:04:03,592 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 09:04:03,592 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 09:04:03,595 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 09:04:03,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:04:02" (1/3) ... [2022-07-19 09:04:03,612 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cf8aa38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:04:03, skipping insertion in model container [2022-07-19 09:04:03,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:04:03" (2/3) ... [2022-07-19 09:04:03,613 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cf8aa38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:04:03, skipping insertion in model container [2022-07-19 09:04:03,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:04:03" (3/3) ... [2022-07-19 09:04:03,615 INFO L111 eAbstractionObserver]: Analyzing ICFG standard_init3_ground-2.i [2022-07-19 09:04:03,630 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 09:04:03,631 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 09:04:03,698 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 09:04:03,707 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@503d214b, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@641efbd2 [2022-07-19 09:04:03,707 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 09:04:03,712 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 16 states have (on average 1.625) internal successors, (26), 17 states have internal predecessors, (26), 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) [2022-07-19 09:04:03,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-19 09:04:03,720 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 09:04:03,721 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 09:04:03,722 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 09:04:03,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 09:04:03,729 INFO L85 PathProgramCache]: Analyzing trace with hash -93359874, now seen corresponding path program 1 times [2022-07-19 09:04:03,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 09:04:03,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498915437] [2022-07-19 09:04:03,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 09:04:03,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 09:04:03,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 09:04:03,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 09:04:03,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 09:04:03,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498915437] [2022-07-19 09:04:03,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498915437] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 09:04:03,899 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 09:04:03,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 09:04:03,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564182072] [2022-07-19 09:04:03,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 09:04:03,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 09:04:03,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 09:04:03,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 09:04:03,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 09:04:03,929 INFO L87 Difference]: Start difference. First operand has 18 states, 16 states have (on average 1.625) internal successors, (26), 17 states have internal predecessors, (26), 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) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2022-07-19 09:04:03,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 09:04:03,959 INFO L93 Difference]: Finished difference Result 36 states and 56 transitions. [2022-07-19 09:04:03,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 09:04:03,962 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 11 [2022-07-19 09:04:03,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 09:04:03,968 INFO L225 Difference]: With dead ends: 36 [2022-07-19 09:04:03,968 INFO L226 Difference]: Without dead ends: 17 [2022-07-19 09:04:03,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 09:04:03,974 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 09:04:03,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 30 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 09:04:03,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-07-19 09:04:04,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-07-19 09:04:04,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 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) [2022-07-19 09:04:04,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2022-07-19 09:04:04,003 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 11 [2022-07-19 09:04:04,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 09:04:04,004 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2022-07-19 09:04:04,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2022-07-19 09:04:04,004 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2022-07-19 09:04:04,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-07-19 09:04:04,005 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 09:04:04,005 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 09:04:04,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 09:04:04,006 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 09:04:04,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 09:04:04,007 INFO L85 PathProgramCache]: Analyzing trace with hash -168681064, now seen corresponding path program 1 times [2022-07-19 09:04:04,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 09:04:04,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795270986] [2022-07-19 09:04:04,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 09:04:04,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 09:04:04,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 09:04:04,051 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-19 09:04:04,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 09:04:04,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795270986] [2022-07-19 09:04:04,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795270986] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 09:04:04,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947437998] [2022-07-19 09:04:04,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 09:04:04,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 09:04:04,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 09:04:04,055 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) [2022-07-19 09:04:04,088 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 09:04:04,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 09:04:04,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 09:04:04,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 09:04:04,171 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-19 09:04:04,171 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 09:04:04,198 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-19 09:04:04,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [947437998] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 09:04:04,202 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 09:04:04,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-07-19 09:04:04,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118801264] [2022-07-19 09:04:04,204 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 09:04:04,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 09:04:04,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 09:04:04,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 09:04:04,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-07-19 09:04:04,208 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 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) [2022-07-19 09:04:04,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 09:04:04,289 INFO L93 Difference]: Finished difference Result 39 states and 53 transitions. [2022-07-19 09:04:04,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 09:04:04,290 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 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 14 [2022-07-19 09:04:04,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 09:04:04,290 INFO L225 Difference]: With dead ends: 39 [2022-07-19 09:04:04,292 INFO L226 Difference]: Without dead ends: 26 [2022-07-19 09:04:04,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-07-19 09:04:04,294 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 09:04:04,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 30 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 09:04:04,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-07-19 09:04:04,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-07-19 09:04:04,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.16) internal successors, (29), 25 states have internal predecessors, (29), 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) [2022-07-19 09:04:04,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2022-07-19 09:04:04,305 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 14 [2022-07-19 09:04:04,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 09:04:04,305 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2022-07-19 09:04:04,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 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) [2022-07-19 09:04:04,307 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2022-07-19 09:04:04,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-07-19 09:04:04,308 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 09:04:04,308 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 09:04:04,342 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-19 09:04:04,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 09:04:04,524 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 09:04:04,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 09:04:04,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1736848510, now seen corresponding path program 2 times [2022-07-19 09:04:04,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 09:04:04,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145570501] [2022-07-19 09:04:04,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 09:04:04,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 09:04:04,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 09:04:04,636 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-19 09:04:04,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 09:04:04,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145570501] [2022-07-19 09:04:04,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145570501] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 09:04:04,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049913669] [2022-07-19 09:04:04,637 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-19 09:04:04,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 09:04:04,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 09:04:04,641 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) [2022-07-19 09:04:04,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-19 09:04:04,702 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-19 09:04:04,702 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 09:04:04,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-19 09:04:04,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 09:04:04,732 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-19 09:04:04,733 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 09:04:04,788 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-19 09:04:04,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049913669] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 09:04:04,789 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 09:04:04,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2022-07-19 09:04:04,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603536321] [2022-07-19 09:04:04,790 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 09:04:04,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-19 09:04:04,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 09:04:04,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-19 09:04:04,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-07-19 09:04:04,792 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 13 states have internal predecessors, (25), 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) [2022-07-19 09:04:04,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 09:04:04,874 INFO L93 Difference]: Finished difference Result 63 states and 86 transitions. [2022-07-19 09:04:04,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-19 09:04:04,875 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 13 states have internal predecessors, (25), 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 23 [2022-07-19 09:04:04,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 09:04:04,876 INFO L225 Difference]: With dead ends: 63 [2022-07-19 09:04:04,876 INFO L226 Difference]: Without dead ends: 44 [2022-07-19 09:04:04,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-07-19 09:04:04,878 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 09:04:04,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 22 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 09:04:04,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-07-19 09:04:04,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2022-07-19 09:04:04,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.0930232558139534) internal successors, (47), 43 states have internal predecessors, (47), 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) [2022-07-19 09:04:04,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions. [2022-07-19 09:04:04,887 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 23 [2022-07-19 09:04:04,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 09:04:04,887 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions. [2022-07-19 09:04:04,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 13 states have internal predecessors, (25), 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) [2022-07-19 09:04:04,888 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2022-07-19 09:04:04,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-19 09:04:04,889 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 09:04:04,889 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 09:04:04,918 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-19 09:04:05,106 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,SelfDestructingSolverStorable2 [2022-07-19 09:04:05,106 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 09:04:05,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 09:04:05,107 INFO L85 PathProgramCache]: Analyzing trace with hash -468119106, now seen corresponding path program 3 times [2022-07-19 09:04:05,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 09:04:05,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519657515] [2022-07-19 09:04:05,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 09:04:05,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 09:04:05,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 09:04:05,305 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2022-07-19 09:04:05,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 09:04:05,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519657515] [2022-07-19 09:04:05,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519657515] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 09:04:05,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [590776147] [2022-07-19 09:04:05,306 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-19 09:04:05,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 09:04:05,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 09:04:05,308 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) [2022-07-19 09:04:05,331 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-19 09:04:05,961 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-07-19 09:04:05,962 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 09:04:05,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-19 09:04:05,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 09:04:06,006 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2022-07-19 09:04:06,006 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 09:04:06,238 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-07-19 09:04:06,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [590776147] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 09:04:06,239 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 09:04:06,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2022-07-19 09:04:06,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285426456] [2022-07-19 09:04:06,239 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 09:04:06,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-07-19 09:04:06,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 09:04:06,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-07-19 09:04:06,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2022-07-19 09:04:06,244 INFO L87 Difference]: Start difference. First operand 44 states and 47 transitions. Second operand has 25 states, 25 states have (on average 2.08) internal successors, (52), 25 states have internal predecessors, (52), 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) [2022-07-19 09:04:06,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 09:04:06,364 INFO L93 Difference]: Finished difference Result 111 states and 152 transitions. [2022-07-19 09:04:06,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-19 09:04:06,365 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), 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 41 [2022-07-19 09:04:06,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 09:04:06,366 INFO L225 Difference]: With dead ends: 111 [2022-07-19 09:04:06,366 INFO L226 Difference]: Without dead ends: 80 [2022-07-19 09:04:06,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2022-07-19 09:04:06,368 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 09:04:06,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 78 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 09:04:06,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-07-19 09:04:06,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2022-07-19 09:04:06,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.0506329113924051) internal successors, (83), 79 states have internal predecessors, (83), 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) [2022-07-19 09:04:06,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 83 transitions. [2022-07-19 09:04:06,395 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 83 transitions. Word has length 41 [2022-07-19 09:04:06,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 09:04:06,398 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 83 transitions. [2022-07-19 09:04:06,398 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), 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) [2022-07-19 09:04:06,398 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 83 transitions. [2022-07-19 09:04:06,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-19 09:04:06,400 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 09:04:06,401 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 09:04:06,433 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-19 09:04:06,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 09:04:06,620 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 09:04:06,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 09:04:06,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1058733118, now seen corresponding path program 4 times [2022-07-19 09:04:06,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 09:04:06,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934118141] [2022-07-19 09:04:06,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 09:04:06,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 09:04:06,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 09:04:07,044 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 506 trivial. 0 not checked. [2022-07-19 09:04:07,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 09:04:07,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934118141] [2022-07-19 09:04:07,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934118141] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 09:04:07,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [880520115] [2022-07-19 09:04:07,045 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-19 09:04:07,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 09:04:07,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 09:04:07,047 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 09:04:07,058 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-19 09:04:07,218 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-19 09:04:07,218 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 09:04:07,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-19 09:04:07,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 09:04:07,287 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 506 trivial. 0 not checked. [2022-07-19 09:04:07,288 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 09:04:07,893 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 506 trivial. 0 not checked. [2022-07-19 09:04:07,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [880520115] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 09:04:07,893 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 09:04:07,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2022-07-19 09:04:07,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898401144] [2022-07-19 09:04:07,894 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 09:04:07,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-07-19 09:04:07,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 09:04:07,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-07-19 09:04:07,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2022-07-19 09:04:07,900 INFO L87 Difference]: Start difference. First operand 80 states and 83 transitions. Second operand has 49 states, 49 states have (on average 1.2448979591836735) internal successors, (61), 49 states have internal predecessors, (61), 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) [2022-07-19 09:04:08,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 09:04:08,247 INFO L93 Difference]: Finished difference Result 207 states and 284 transitions. [2022-07-19 09:04:08,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-07-19 09:04:08,248 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.2448979591836735) internal successors, (61), 49 states have internal predecessors, (61), 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 77 [2022-07-19 09:04:08,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 09:04:08,253 INFO L225 Difference]: With dead ends: 207 [2022-07-19 09:04:08,253 INFO L226 Difference]: Without dead ends: 152 [2022-07-19 09:04:08,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2022-07-19 09:04:08,257 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 369 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 369 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-19 09:04:08,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 62 Invalid, 528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [369 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-19 09:04:08,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2022-07-19 09:04:08,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2022-07-19 09:04:08,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 151 states have (on average 1.0264900662251655) internal successors, (155), 151 states have internal predecessors, (155), 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) [2022-07-19 09:04:08,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 155 transitions. [2022-07-19 09:04:08,288 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 155 transitions. Word has length 77 [2022-07-19 09:04:08,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 09:04:08,289 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 155 transitions. [2022-07-19 09:04:08,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.2448979591836735) internal successors, (61), 49 states have internal predecessors, (61), 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) [2022-07-19 09:04:08,289 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 155 transitions. [2022-07-19 09:04:08,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-07-19 09:04:08,298 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 09:04:08,299 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 09:04:08,317 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-19 09:04:08,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 09:04:08,504 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 09:04:08,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 09:04:08,505 INFO L85 PathProgramCache]: Analyzing trace with hash -99643074, now seen corresponding path program 5 times [2022-07-19 09:04:08,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 09:04:08,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066125398] [2022-07-19 09:04:08,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 09:04:08,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 09:04:08,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 09:04:09,653 INFO L134 CoverageAnalysis]: Checked inductivity of 3243 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 2162 trivial. 0 not checked. [2022-07-19 09:04:09,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 09:04:09,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066125398] [2022-07-19 09:04:09,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066125398] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 09:04:09,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751220732] [2022-07-19 09:04:09,655 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-19 09:04:09,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 09:04:09,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 09:04:09,657 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 09:04:09,658 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process