./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-examples/standard_init8_ground-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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_init8_ground-1.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 dda1041cfa36c4017116912acad0e6776c355afeb5733cf0531e7478051aaa6d --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-20 20:40:29,640 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-20 20:40:29,642 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-20 20:40:29,671 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-20 20:40:29,671 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-20 20:40:29,672 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-20 20:40:29,673 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-20 20:40:29,680 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-20 20:40:29,681 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-20 20:40:29,685 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-20 20:40:29,686 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-20 20:40:29,687 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-20 20:40:29,687 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-20 20:40:29,689 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-20 20:40:29,690 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-20 20:40:29,692 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-20 20:40:29,692 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-20 20:40:29,694 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-20 20:40:29,695 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-20 20:40:29,700 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-20 20:40:29,702 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-20 20:40:29,703 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-20 20:40:29,703 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-20 20:40:29,704 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-20 20:40:29,706 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-20 20:40:29,711 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-20 20:40:29,711 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-20 20:40:29,712 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-20 20:40:29,713 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-20 20:40:29,713 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-20 20:40:29,714 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-20 20:40:29,714 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-20 20:40:29,715 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-20 20:40:29,715 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-20 20:40:29,716 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-20 20:40:29,716 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-20 20:40:29,717 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-20 20:40:29,717 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-20 20:40:29,717 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-20 20:40:29,717 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-20 20:40:29,718 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-20 20:40:29,719 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-20 20:40:29,721 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-20 20:40:29,741 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-20 20:40:29,744 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-20 20:40:29,744 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-20 20:40:29,744 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-20 20:40:29,745 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-20 20:40:29,745 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-20 20:40:29,746 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-20 20:40:29,746 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-20 20:40:29,746 INFO L138 SettingsManager]: * Use SBE=true [2022-07-20 20:40:29,747 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-20 20:40:29,747 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-20 20:40:29,747 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-20 20:40:29,747 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-20 20:40:29,747 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-20 20:40:29,748 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-20 20:40:29,748 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-20 20:40:29,748 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-20 20:40:29,748 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-20 20:40:29,748 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-20 20:40:29,748 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-20 20:40:29,749 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-20 20:40:29,749 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-20 20:40:29,750 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-20 20:40:29,750 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-20 20:40:29,750 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 20:40:29,750 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-20 20:40:29,750 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-20 20:40:29,750 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-20 20:40:29,751 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-20 20:40:29,751 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-20 20:40:29,751 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-20 20:40:29,751 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-20 20:40:29,751 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-20 20:40:29,751 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dda1041cfa36c4017116912acad0e6776c355afeb5733cf0531e7478051aaa6d [2022-07-20 20:40:29,928 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-20 20:40:29,961 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-20 20:40:29,963 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-20 20:40:29,964 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-20 20:40:29,964 INFO L275 PluginConnector]: CDTParser initialized [2022-07-20 20:40:29,965 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/standard_init8_ground-1.i [2022-07-20 20:40:30,004 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39dd288ee/daa116ab6f5b41aebd59c36dbdcf5ea0/FLAGece6467d7 [2022-07-20 20:40:30,354 INFO L306 CDTParser]: Found 1 translation units. [2022-07-20 20:40:30,354 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_init8_ground-1.i [2022-07-20 20:40:30,359 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39dd288ee/daa116ab6f5b41aebd59c36dbdcf5ea0/FLAGece6467d7 [2022-07-20 20:40:30,367 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39dd288ee/daa116ab6f5b41aebd59c36dbdcf5ea0 [2022-07-20 20:40:30,369 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-20 20:40:30,371 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-20 20:40:30,372 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-20 20:40:30,373 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-20 20:40:30,375 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-20 20:40:30,376 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 08:40:30" (1/1) ... [2022-07-20 20:40:30,376 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c856677 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 08:40:30, skipping insertion in model container [2022-07-20 20:40:30,377 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 08:40:30" (1/1) ... [2022-07-20 20:40:30,381 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-20 20:40:30,391 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-20 20:40:30,515 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_init8_ground-1.i[816,829] [2022-07-20 20:40:30,538 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 20:40:30,544 INFO L203 MainTranslator]: Completed pre-run [2022-07-20 20:40:30,552 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_init8_ground-1.i[816,829] [2022-07-20 20:40:30,558 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 20:40:30,566 INFO L208 MainTranslator]: Completed translation [2022-07-20 20:40:30,567 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 08:40:30 WrapperNode [2022-07-20 20:40:30,567 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-20 20:40:30,568 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-20 20:40:30,568 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-20 20:40:30,568 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-20 20:40:30,573 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 08:40:30" (1/1) ... [2022-07-20 20:40:30,578 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 08:40:30" (1/1) ... [2022-07-20 20:40:30,605 INFO L137 Inliner]: procedures = 15, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 89 [2022-07-20 20:40:30,606 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-20 20:40:30,607 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-20 20:40:30,607 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-20 20:40:30,607 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-20 20:40:30,612 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 08:40:30" (1/1) ... [2022-07-20 20:40:30,612 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 08:40:30" (1/1) ... [2022-07-20 20:40:30,614 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 08:40:30" (1/1) ... [2022-07-20 20:40:30,614 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 08:40:30" (1/1) ... [2022-07-20 20:40:30,617 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 08:40:30" (1/1) ... [2022-07-20 20:40:30,621 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 08:40:30" (1/1) ... [2022-07-20 20:40:30,622 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 08:40:30" (1/1) ... [2022-07-20 20:40:30,623 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-20 20:40:30,624 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-20 20:40:30,624 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-20 20:40:30,624 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-20 20:40:30,625 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 08:40:30" (1/1) ... [2022-07-20 20:40:30,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 20:40:30,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 20:40:30,669 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) [2022-07-20 20:40:30,691 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 [2022-07-20 20:40:30,711 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-20 20:40:30,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-20 20:40:30,711 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-20 20:40:30,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-20 20:40:30,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-20 20:40:30,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-20 20:40:30,712 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-20 20:40:30,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-20 20:40:30,751 INFO L234 CfgBuilder]: Building ICFG [2022-07-20 20:40:30,752 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-20 20:40:30,863 INFO L275 CfgBuilder]: Performing block encoding [2022-07-20 20:40:30,867 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-20 20:40:30,867 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2022-07-20 20:40:30,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 08:40:30 BoogieIcfgContainer [2022-07-20 20:40:30,869 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-20 20:40:30,870 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-20 20:40:30,870 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-20 20:40:30,873 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-20 20:40:30,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 08:40:30" (1/3) ... [2022-07-20 20:40:30,874 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a271035 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 08:40:30, skipping insertion in model container [2022-07-20 20:40:30,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 08:40:30" (2/3) ... [2022-07-20 20:40:30,874 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a271035 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 08:40:30, skipping insertion in model container [2022-07-20 20:40:30,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 08:40:30" (3/3) ... [2022-07-20 20:40:30,875 INFO L111 eAbstractionObserver]: Analyzing ICFG standard_init8_ground-1.i [2022-07-20 20:40:30,886 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-20 20:40:30,886 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-20 20:40:30,918 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-20 20:40:30,922 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@4adf7df6, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3af2bb0e [2022-07-20 20:40:30,923 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-20 20:40:30,926 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 26 states have (on average 1.7692307692307692) internal successors, (46), 27 states have internal predecessors, (46), 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) [2022-07-20 20:40:30,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-07-20 20:40:30,931 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 20:40:30,931 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 20:40:30,932 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 20:40:30,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 20:40:30,936 INFO L85 PathProgramCache]: Analyzing trace with hash 730030661, now seen corresponding path program 1 times [2022-07-20 20:40:30,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 20:40:30,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644465937] [2022-07-20 20:40:30,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 20:40:30,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 20:40:31,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 20:40:31,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 20:40:31,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 20:40:31,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644465937] [2022-07-20 20:40:31,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644465937] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 20:40:31,048 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 20:40:31,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 20:40:31,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556317687] [2022-07-20 20:40:31,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 20:40:31,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 20:40:31,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 20:40:31,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 20:40:31,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 20:40:31,078 INFO L87 Difference]: Start difference. First operand has 28 states, 26 states have (on average 1.7692307692307692) internal successors, (46), 27 states have internal predecessors, (46), 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 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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) [2022-07-20 20:40:31,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 20:40:31,139 INFO L93 Difference]: Finished difference Result 61 states and 111 transitions. [2022-07-20 20:40:31,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 20:40:31,142 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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 21 [2022-07-20 20:40:31,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 20:40:31,147 INFO L225 Difference]: With dead ends: 61 [2022-07-20 20:40:31,148 INFO L226 Difference]: Without dead ends: 32 [2022-07-20 20:40:31,151 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 [2022-07-20 20:40:31,153 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 20:40:31,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 20:40:31,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-07-20 20:40:31,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-07-20 20:40:31,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 31 states have internal predecessors, (40), 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) [2022-07-20 20:40:31,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2022-07-20 20:40:31,180 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 21 [2022-07-20 20:40:31,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 20:40:31,180 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 40 transitions. [2022-07-20 20:40:31,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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) [2022-07-20 20:40:31,180 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2022-07-20 20:40:31,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-07-20 20:40:31,181 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 20:40:31,181 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 20:40:31,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-20 20:40:31,182 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 20:40:31,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 20:40:31,183 INFO L85 PathProgramCache]: Analyzing trace with hash 798141757, now seen corresponding path program 1 times [2022-07-20 20:40:31,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 20:40:31,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553200642] [2022-07-20 20:40:31,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 20:40:31,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 20:40:31,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 20:40:31,232 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-20 20:40:31,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 20:40:31,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553200642] [2022-07-20 20:40:31,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553200642] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 20:40:31,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965234172] [2022-07-20 20:40:31,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 20:40:31,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 20:40:31,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 20:40:31,240 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) [2022-07-20 20:40:31,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-20 20:40:31,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 20:40:31,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-20 20:40:31,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 20:40:31,349 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-20 20:40:31,349 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 20:40:31,368 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-20 20:40:31,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965234172] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-20 20:40:31,369 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-20 20:40:31,369 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-07-20 20:40:31,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439834815] [2022-07-20 20:40:31,370 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-20 20:40:31,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-20 20:40:31,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 20:40:31,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-20 20:40:31,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-07-20 20:40:31,371 INFO L87 Difference]: Start difference. First operand 32 states and 40 transitions. Second operand has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 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) [2022-07-20 20:40:31,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 20:40:31,461 INFO L93 Difference]: Finished difference Result 84 states and 123 transitions. [2022-07-20 20:40:31,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-20 20:40:31,462 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 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 29 [2022-07-20 20:40:31,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 20:40:31,463 INFO L225 Difference]: With dead ends: 84 [2022-07-20 20:40:31,463 INFO L226 Difference]: Without dead ends: 56 [2022-07-20 20:40:31,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-07-20 20:40:31,464 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 20:40:31,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-20 20:40:31,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-07-20 20:40:31,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2022-07-20 20:40:31,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.1636363636363636) internal successors, (64), 55 states have internal predecessors, (64), 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) [2022-07-20 20:40:31,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 64 transitions. [2022-07-20 20:40:31,472 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 64 transitions. Word has length 29 [2022-07-20 20:40:31,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 20:40:31,472 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 64 transitions. [2022-07-20 20:40:31,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 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) [2022-07-20 20:40:31,473 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 64 transitions. [2022-07-20 20:40:31,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-07-20 20:40:31,474 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 20:40:31,475 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 20:40:31,492 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-20 20:40:31,692 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 [2022-07-20 20:40:31,693 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 20:40:31,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 20:40:31,693 INFO L85 PathProgramCache]: Analyzing trace with hash -33175999, now seen corresponding path program 2 times [2022-07-20 20:40:31,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 20:40:31,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538399404] [2022-07-20 20:40:31,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 20:40:31,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 20:40:31,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 20:40:31,805 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-07-20 20:40:31,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 20:40:31,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538399404] [2022-07-20 20:40:31,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538399404] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 20:40:31,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769178557] [2022-07-20 20:40:31,806 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-20 20:40:31,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 20:40:31,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 20:40:31,808 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) [2022-07-20 20:40:31,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-20 20:40:31,930 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-20 20:40:31,931 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-20 20:40:31,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-20 20:40:31,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 20:40:31,977 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-07-20 20:40:31,988 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 20:40:32,057 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-07-20 20:40:32,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1769178557] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-20 20:40:32,057 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-20 20:40:32,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2022-07-20 20:40:32,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26714892] [2022-07-20 20:40:32,058 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-20 20:40:32,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-20 20:40:32,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 20:40:32,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-20 20:40:32,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-07-20 20:40:32,062 INFO L87 Difference]: Start difference. First operand 56 states and 64 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 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) [2022-07-20 20:40:32,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 20:40:32,256 INFO L93 Difference]: Finished difference Result 153 states and 216 transitions. [2022-07-20 20:40:32,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-20 20:40:32,256 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 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 53 [2022-07-20 20:40:32,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 20:40:32,257 INFO L225 Difference]: With dead ends: 153 [2022-07-20 20:40:32,257 INFO L226 Difference]: Without dead ends: 104 [2022-07-20 20:40:32,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-07-20 20:40:32,259 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 20:40:32,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 64 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-20 20:40:32,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2022-07-20 20:40:32,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2022-07-20 20:40:32,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 1.087378640776699) internal successors, (112), 103 states have internal predecessors, (112), 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) [2022-07-20 20:40:32,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 112 transitions. [2022-07-20 20:40:32,268 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 112 transitions. Word has length 53 [2022-07-20 20:40:32,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 20:40:32,268 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 112 transitions. [2022-07-20 20:40:32,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 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) [2022-07-20 20:40:32,269 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 112 transitions. [2022-07-20 20:40:32,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-20 20:40:32,271 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 20:40:32,271 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 20:40:32,300 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-20 20:40:32,501 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 [2022-07-20 20:40:32,501 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 20:40:32,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 20:40:32,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1782471873, now seen corresponding path program 3 times [2022-07-20 20:40:32,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 20:40:32,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790804498] [2022-07-20 20:40:32,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 20:40:32,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 20:40:32,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 20:40:32,762 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2022-07-20 20:40:32,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 20:40:32,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790804498] [2022-07-20 20:40:32,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790804498] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 20:40:32,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976115121] [2022-07-20 20:40:32,763 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-20 20:40:32,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 20:40:32,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 20:40:32,765 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) [2022-07-20 20:40:32,766 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-20 20:40:40,264 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-07-20 20:40:40,265 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-20 20:40:40,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 629 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-20 20:40:40,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 20:40:40,331 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 10 proven. 55 refuted. 0 times theorem prover too weak. 375 trivial. 0 not checked. [2022-07-20 20:40:40,332 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 20:40:40,510 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2022-07-20 20:40:40,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [976115121] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-20 20:40:40,511 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-20 20:40:40,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 13] total 26 [2022-07-20 20:40:40,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571704107] [2022-07-20 20:40:40,511 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-20 20:40:40,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-20 20:40:40,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 20:40:40,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-20 20:40:40,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2022-07-20 20:40:40,513 INFO L87 Difference]: Start difference. First operand 104 states and 112 transitions. Second operand has 26 states, 26 states have (on average 3.0384615384615383) internal successors, (79), 26 states have internal predecessors, (79), 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) [2022-07-20 20:40:40,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 20:40:40,889 INFO L93 Difference]: Finished difference Result 291 states and 402 transitions. [2022-07-20 20:40:40,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-07-20 20:40:40,890 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.0384615384615383) internal successors, (79), 26 states have internal predecessors, (79), 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 101 [2022-07-20 20:40:40,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 20:40:40,891 INFO L225 Difference]: With dead ends: 291 [2022-07-20 20:40:40,891 INFO L226 Difference]: Without dead ends: 200 [2022-07-20 20:40:40,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2022-07-20 20:40:40,892 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 15 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 654 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 654 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-20 20:40:40,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 57 Invalid, 894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [654 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-20 20:40:40,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2022-07-20 20:40:40,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2022-07-20 20:40:40,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 199 states have (on average 1.0452261306532664) internal successors, (208), 199 states have internal predecessors, (208), 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) [2022-07-20 20:40:40,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 208 transitions. [2022-07-20 20:40:40,905 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 208 transitions. Word has length 101 [2022-07-20 20:40:40,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 20:40:40,905 INFO L495 AbstractCegarLoop]: Abstraction has 200 states and 208 transitions. [2022-07-20 20:40:40,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.0384615384615383) internal successors, (79), 26 states have internal predecessors, (79), 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) [2022-07-20 20:40:40,906 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 208 transitions. [2022-07-20 20:40:40,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2022-07-20 20:40:40,911 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 20:40:40,911 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 20:40:40,940 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-07-20 20:40:41,131 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 [2022-07-20 20:40:41,131 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 20:40:41,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 20:40:41,132 INFO L85 PathProgramCache]: Analyzing trace with hash -931812927, now seen corresponding path program 4 times [2022-07-20 20:40:41,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 20:40:41,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027200712] [2022-07-20 20:40:41,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 20:40:41,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 20:40:41,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 20:40:41,611 INFO L134 CoverageAnalysis]: Checked inductivity of 2024 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 1771 trivial. 0 not checked. [2022-07-20 20:40:41,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 20:40:41,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027200712] [2022-07-20 20:40:41,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027200712] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 20:40:41,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23002068] [2022-07-20 20:40:41,612 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-20 20:40:41,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 20:40:41,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 20:40:41,628 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) [2022-07-20 20:40:41,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-20 20:40:41,864 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-20 20:40:41,864 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-20 20:40:41,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 1301 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-20 20:40:41,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 20:40:41,922 INFO L134 CoverageAnalysis]: Checked inductivity of 2024 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 1771 trivial. 0 not checked. [2022-07-20 20:40:41,922 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 20:40:42,459 INFO L134 CoverageAnalysis]: Checked inductivity of 2024 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 1771 trivial. 0 not checked. [2022-07-20 20:40:42,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [23002068] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-20 20:40:42,459 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-20 20:40:42,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2022-07-20 20:40:42,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797795886] [2022-07-20 20:40:42,459 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-20 20:40:42,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-07-20 20:40:42,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 20:40:42,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-07-20 20:40:42,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2022-07-20 20:40:42,461 INFO L87 Difference]: Start difference. First operand 200 states and 208 transitions. Second operand has 49 states, 49 states have (on average 1.5510204081632653) internal successors, (76), 49 states have internal predecessors, (76), 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) [2022-07-20 20:40:43,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 20:40:43,228 INFO L93 Difference]: Finished difference Result 567 states and 774 transitions. [2022-07-20 20:40:43,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-07-20 20:40:43,228 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.5510204081632653) internal successors, (76), 49 states have internal predecessors, (76), 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 197 [2022-07-20 20:40:43,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 20:40:43,230 INFO L225 Difference]: With dead ends: 567 [2022-07-20 20:40:43,230 INFO L226 Difference]: Without dead ends: 392 [2022-07-20 20:40:43,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 417 GetRequests, 370 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2022-07-20 20:40:43,231 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 1137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 1545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1137 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-20 20:40:43,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 56 Invalid, 1545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1137 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-20 20:40:43,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2022-07-20 20:40:43,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 392. [2022-07-20 20:40:43,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 391 states have (on average 1.0230179028132993) internal successors, (400), 391 states have internal predecessors, (400), 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) [2022-07-20 20:40:43,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 400 transitions. [2022-07-20 20:40:43,250 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 400 transitions. Word has length 197 [2022-07-20 20:40:43,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 20:40:43,250 INFO L495 AbstractCegarLoop]: Abstraction has 392 states and 400 transitions. [2022-07-20 20:40:43,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.5510204081632653) internal successors, (76), 49 states have internal predecessors, (76), 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) [2022-07-20 20:40:43,251 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 400 transitions. [2022-07-20 20:40:43,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2022-07-20 20:40:43,254 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 20:40:43,254 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 20:40:43,291 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-20 20:40:43,470 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 [2022-07-20 20:40:43,470 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 20:40:43,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 20:40:43,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1753431103, now seen corresponding path program 5 times [2022-07-20 20:40:43,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 20:40:43,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825157558] [2022-07-20 20:40:43,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 20:40:43,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 20:40:43,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 20:40:44,664 INFO L134 CoverageAnalysis]: Checked inductivity of 8648 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 7567 trivial. 0 not checked. [2022-07-20 20:40:44,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 20:40:44,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825157558] [2022-07-20 20:40:44,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825157558] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 20:40:44,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1708902061] [2022-07-20 20:40:44,664 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-20 20:40:44,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 20:40:44,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 20:40:44,674 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) [2022-07-20 20:40:44,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process