./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-cav19/array_init_pair_symmetr2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 574ddb4e 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-cav19/array_init_pair_symmetr2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4caa1f295436b297cae57f4102149db941e37f67b5d377cc8e9aa7b58bbf9350 --- Real Ultimate output --- This is Ultimate 0.2.2-?-574ddb4 [2023-02-18 11:50:50,722 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-18 11:50:50,724 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-18 11:50:50,749 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-18 11:50:50,749 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-18 11:50:50,750 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-18 11:50:50,752 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-18 11:50:50,753 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-18 11:50:50,754 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-18 11:50:50,755 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-18 11:50:50,756 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-18 11:50:50,756 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-18 11:50:50,757 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-18 11:50:50,758 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-18 11:50:50,759 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-18 11:50:50,759 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-18 11:50:50,760 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-18 11:50:50,761 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-18 11:50:50,763 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-18 11:50:50,764 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-18 11:50:50,765 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-18 11:50:50,766 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-18 11:50:50,767 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-18 11:50:50,768 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-18 11:50:50,771 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-18 11:50:50,771 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-18 11:50:50,772 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-18 11:50:50,772 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-18 11:50:50,773 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-18 11:50:50,774 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-18 11:50:50,774 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-18 11:50:50,775 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-18 11:50:50,775 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-18 11:50:50,776 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-18 11:50:50,777 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-18 11:50:50,777 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-18 11:50:50,777 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-18 11:50:50,778 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-18 11:50:50,778 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-18 11:50:50,779 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-18 11:50:50,779 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-18 11:50:50,780 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-18 11:50:50,804 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-18 11:50:50,808 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-18 11:50:50,808 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-18 11:50:50,808 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-18 11:50:50,809 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-18 11:50:50,809 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-18 11:50:50,811 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-18 11:50:50,811 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-18 11:50:50,811 INFO L138 SettingsManager]: * Use SBE=true [2023-02-18 11:50:50,811 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-18 11:50:50,812 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-18 11:50:50,812 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-18 11:50:50,813 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-18 11:50:50,813 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-18 11:50:50,813 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-18 11:50:50,813 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-18 11:50:50,813 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-18 11:50:50,814 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-18 11:50:50,814 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-18 11:50:50,814 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-18 11:50:50,814 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-18 11:50:50,814 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-18 11:50:50,815 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-18 11:50:50,815 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-18 11:50:50,815 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 11:50:50,815 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-18 11:50:50,815 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-18 11:50:50,816 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-18 11:50:50,816 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-18 11:50:50,816 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-18 11:50:50,817 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-18 11:50:50,817 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-18 11:50:50,817 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-18 11:50:50,817 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-18 11:50:50,817 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-18 11:50:50,818 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4caa1f295436b297cae57f4102149db941e37f67b5d377cc8e9aa7b58bbf9350 [2023-02-18 11:50:51,077 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-18 11:50:51,097 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-18 11:50:51,099 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-18 11:50:51,100 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-18 11:50:51,101 INFO L275 PluginConnector]: CDTParser initialized [2023-02-18 11:50:51,102 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-cav19/array_init_pair_symmetr2.c [2023-02-18 11:50:52,451 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-18 11:50:52,634 INFO L351 CDTParser]: Found 1 translation units. [2023-02-18 11:50:52,635 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-cav19/array_init_pair_symmetr2.c [2023-02-18 11:50:52,640 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7de56239/0fa96f9e046b40358fbdcd7d11dbae20/FLAGdfe811d8b [2023-02-18 11:50:52,653 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7de56239/0fa96f9e046b40358fbdcd7d11dbae20 [2023-02-18 11:50:52,656 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-18 11:50:52,658 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-18 11:50:52,661 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-18 11:50:52,661 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-18 11:50:52,664 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-18 11:50:52,665 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 11:50:52" (1/1) ... [2023-02-18 11:50:52,667 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5566ea4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 11:50:52, skipping insertion in model container [2023-02-18 11:50:52,667 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 11:50:52" (1/1) ... [2023-02-18 11:50:52,674 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-18 11:50:52,692 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 11:50:52,840 WARN L237 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-cav19/array_init_pair_symmetr2.c[415,428] [2023-02-18 11:50:52,862 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 11:50:52,871 INFO L203 MainTranslator]: Completed pre-run [2023-02-18 11:50:52,885 WARN L237 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-cav19/array_init_pair_symmetr2.c[415,428] [2023-02-18 11:50:52,900 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 11:50:52,915 INFO L208 MainTranslator]: Completed translation [2023-02-18 11:50:52,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 11:50:52 WrapperNode [2023-02-18 11:50:52,915 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-18 11:50:52,917 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-18 11:50:52,917 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-18 11:50:52,917 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-18 11:50:52,923 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 11:50:52" (1/1) ... [2023-02-18 11:50:52,937 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 11:50:52" (1/1) ... [2023-02-18 11:50:52,961 INFO L138 Inliner]: procedures = 15, calls = 26, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 77 [2023-02-18 11:50:52,961 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-18 11:50:52,962 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-18 11:50:52,962 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-18 11:50:52,963 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-18 11:50:52,971 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 11:50:52" (1/1) ... [2023-02-18 11:50:52,971 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 11:50:52" (1/1) ... [2023-02-18 11:50:52,976 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 11:50:52" (1/1) ... [2023-02-18 11:50:52,976 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 11:50:52" (1/1) ... [2023-02-18 11:50:52,989 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 11:50:52" (1/1) ... [2023-02-18 11:50:52,992 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 11:50:52" (1/1) ... [2023-02-18 11:50:52,999 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 11:50:52" (1/1) ... [2023-02-18 11:50:53,001 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 11:50:52" (1/1) ... [2023-02-18 11:50:53,005 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-18 11:50:53,007 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-18 11:50:53,007 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-18 11:50:53,007 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-18 11:50:53,009 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 11:50:52" (1/1) ... [2023-02-18 11:50:53,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 11:50:53,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 11:50:53,042 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) [2023-02-18 11:50:53,064 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 [2023-02-18 11:50:53,079 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-18 11:50:53,079 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-02-18 11:50:53,080 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-02-18 11:50:53,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-18 11:50:53,080 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-18 11:50:53,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-18 11:50:53,080 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-18 11:50:53,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-18 11:50:53,081 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-18 11:50:53,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-18 11:50:53,150 INFO L235 CfgBuilder]: Building ICFG [2023-02-18 11:50:53,152 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-18 11:50:53,314 INFO L276 CfgBuilder]: Performing block encoding [2023-02-18 11:50:53,319 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-18 11:50:53,319 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2023-02-18 11:50:53,321 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 11:50:53 BoogieIcfgContainer [2023-02-18 11:50:53,321 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-18 11:50:53,324 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-18 11:50:53,324 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-18 11:50:53,327 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-18 11:50:53,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.02 11:50:52" (1/3) ... [2023-02-18 11:50:53,328 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15dbeeec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 11:50:53, skipping insertion in model container [2023-02-18 11:50:53,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 11:50:52" (2/3) ... [2023-02-18 11:50:53,328 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15dbeeec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 11:50:53, skipping insertion in model container [2023-02-18 11:50:53,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 11:50:53" (3/3) ... [2023-02-18 11:50:53,330 INFO L112 eAbstractionObserver]: Analyzing ICFG array_init_pair_symmetr2.c [2023-02-18 11:50:53,346 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-18 11:50:53,347 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-18 11:50:53,387 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-18 11:50:53,393 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=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6d0b2d5d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-18 11:50:53,393 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-18 11:50:53,397 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 20 states have (on average 1.45) internal successors, (29), 21 states have internal predecessors, (29), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-18 11:50:53,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-18 11:50:53,404 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 11:50:53,404 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 11:50:53,405 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 11:50:53,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 11:50:53,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1607472667, now seen corresponding path program 1 times [2023-02-18 11:50:53,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 11:50:53,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353120735] [2023-02-18 11:50:53,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 11:50:53,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 11:50:53,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:50:53,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 11:50:53,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 11:50:53,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353120735] [2023-02-18 11:50:53,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353120735] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 11:50:53,620 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 11:50:53,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-18 11:50:53,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737055233] [2023-02-18 11:50:53,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 11:50:53,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-18 11:50:53,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 11:50:53,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-18 11:50:53,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-18 11:50:53,672 INFO L87 Difference]: Start difference. First operand has 26 states, 20 states have (on average 1.45) internal successors, (29), 21 states have internal predecessors, (29), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2023-02-18 11:50:53,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 11:50:53,688 INFO L93 Difference]: Finished difference Result 50 states and 71 transitions. [2023-02-18 11:50:53,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-18 11:50:53,689 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2023-02-18 11:50:53,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 11:50:53,694 INFO L225 Difference]: With dead ends: 50 [2023-02-18 11:50:53,695 INFO L226 Difference]: Without dead ends: 22 [2023-02-18 11:50:53,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-18 11:50:53,700 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 11:50:53,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 11:50:53,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-02-18 11:50:53,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2023-02-18 11:50:53,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-18 11:50:53,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2023-02-18 11:50:53,736 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 9 [2023-02-18 11:50:53,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 11:50:53,737 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2023-02-18 11:50:53,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2023-02-18 11:50:53,738 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2023-02-18 11:50:53,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-18 11:50:53,739 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 11:50:53,739 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 11:50:53,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-18 11:50:53,740 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 11:50:53,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 11:50:53,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1898116011, now seen corresponding path program 1 times [2023-02-18 11:50:53,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 11:50:53,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399425413] [2023-02-18 11:50:53,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 11:50:53,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 11:50:53,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:50:53,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 11:50:53,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 11:50:53,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399425413] [2023-02-18 11:50:53,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399425413] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 11:50:53,908 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 11:50:53,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-18 11:50:53,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519860238] [2023-02-18 11:50:53,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 11:50:53,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-18 11:50:53,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 11:50:53,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-18 11:50:53,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-18 11:50:53,911 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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) [2023-02-18 11:50:53,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 11:50:53,980 INFO L93 Difference]: Finished difference Result 40 states and 50 transitions. [2023-02-18 11:50:53,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-18 11:50:53,981 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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 9 [2023-02-18 11:50:53,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 11:50:53,982 INFO L225 Difference]: With dead ends: 40 [2023-02-18 11:50:53,982 INFO L226 Difference]: Without dead ends: 30 [2023-02-18 11:50:53,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-18 11:50:53,984 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 35 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 11:50:53,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 24 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 11:50:53,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2023-02-18 11:50:53,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 24. [2023-02-18 11:50:53,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-18 11:50:53,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2023-02-18 11:50:53,993 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 9 [2023-02-18 11:50:53,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 11:50:53,993 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2023-02-18 11:50:53,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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) [2023-02-18 11:50:53,994 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2023-02-18 11:50:53,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-02-18 11:50:53,995 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 11:50:53,995 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 11:50:53,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-18 11:50:53,995 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 11:50:53,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 11:50:53,996 INFO L85 PathProgramCache]: Analyzing trace with hash 544146986, now seen corresponding path program 1 times [2023-02-18 11:50:53,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 11:50:53,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032295383] [2023-02-18 11:50:53,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 11:50:53,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 11:50:54,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:50:54,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 11:50:54,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:50:54,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-18 11:50:54,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:50:54,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-02-18 11:50:54,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:50:54,163 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-02-18 11:50:54,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 11:50:54,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032295383] [2023-02-18 11:50:54,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032295383] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 11:50:54,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934199158] [2023-02-18 11:50:54,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 11:50:54,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 11:50:54,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 11:50:54,168 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) [2023-02-18 11:50:54,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-18 11:50:54,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:50:54,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-18 11:50:54,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 11:50:54,336 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-02-18 11:50:54,337 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 11:50:54,367 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-02-18 11:50:54,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [934199158] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 11:50:54,367 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 11:50:54,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 5] total 10 [2023-02-18 11:50:54,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954400282] [2023-02-18 11:50:54,368 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 11:50:54,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-02-18 11:50:54,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 11:50:54,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-18 11:50:54,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2023-02-18 11:50:54,371 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-02-18 11:50:54,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 11:50:54,522 INFO L93 Difference]: Finished difference Result 72 states and 92 transitions. [2023-02-18 11:50:54,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-18 11:50:54,522 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 29 [2023-02-18 11:50:54,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 11:50:54,524 INFO L225 Difference]: With dead ends: 72 [2023-02-18 11:50:54,524 INFO L226 Difference]: Without dead ends: 61 [2023-02-18 11:50:54,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2023-02-18 11:50:54,526 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 134 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 11:50:54,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 38 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 11:50:54,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2023-02-18 11:50:54,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 48. [2023-02-18 11:50:54,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 34 states have (on average 1.088235294117647) internal successors, (37), 34 states have internal predecessors, (37), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-02-18 11:50:54,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 61 transitions. [2023-02-18 11:50:54,537 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 61 transitions. Word has length 29 [2023-02-18 11:50:54,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 11:50:54,538 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 61 transitions. [2023-02-18 11:50:54,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-02-18 11:50:54,538 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 61 transitions. [2023-02-18 11:50:54,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-02-18 11:50:54,541 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 11:50:54,541 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 11:50:54,556 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-18 11:50:54,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 11:50:54,757 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 11:50:54,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 11:50:54,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1645511465, now seen corresponding path program 2 times [2023-02-18 11:50:54,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 11:50:54,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327915637] [2023-02-18 11:50:54,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 11:50:54,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 11:50:54,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:50:55,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 11:50:55,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:50:55,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-18 11:50:55,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:50:55,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-02-18 11:50:55,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:50:55,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-02-18 11:50:55,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:50:55,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-02-18 11:50:55,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:50:55,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-02-18 11:50:55,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:50:55,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-02-18 11:50:55,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:50:55,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-02-18 11:50:55,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:50:55,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-02-18 11:50:55,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:50:55,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-02-18 11:50:55,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:50:55,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-02-18 11:50:55,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:50:55,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-02-18 11:50:55,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:50:55,161 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2023-02-18 11:50:55,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 11:50:55,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327915637] [2023-02-18 11:50:55,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327915637] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 11:50:55,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [656275032] [2023-02-18 11:50:55,167 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 11:50:55,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 11:50:55,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 11:50:55,169 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) [2023-02-18 11:50:55,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-18 11:50:55,274 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-18 11:50:55,274 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 11:50:55,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-18 11:50:55,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 11:50:55,341 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2023-02-18 11:50:55,341 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 11:50:55,407 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2023-02-18 11:50:55,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [656275032] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 11:50:55,408 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 11:50:55,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 19 [2023-02-18 11:50:55,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169013006] [2023-02-18 11:50:55,408 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 11:50:55,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-02-18 11:50:55,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 11:50:55,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-02-18 11:50:55,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=195, Unknown=0, NotChecked=0, Total=342 [2023-02-18 11:50:55,415 INFO L87 Difference]: Start difference. First operand 48 states and 61 transitions. Second operand has 19 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 19 states have internal predecessors, (58), 12 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 12 states have call predecessors, (36), 12 states have call successors, (36) [2023-02-18 11:50:55,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 11:50:55,736 INFO L93 Difference]: Finished difference Result 162 states and 206 transitions. [2023-02-18 11:50:55,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-18 11:50:55,737 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 19 states have internal predecessors, (58), 12 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 12 states have call predecessors, (36), 12 states have call successors, (36) Word has length 89 [2023-02-18 11:50:55,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 11:50:55,747 INFO L225 Difference]: With dead ends: 162 [2023-02-18 11:50:55,748 INFO L226 Difference]: Without dead ends: 145 [2023-02-18 11:50:55,748 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 189 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=222, Invalid=330, Unknown=0, NotChecked=0, Total=552 [2023-02-18 11:50:55,751 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 282 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-18 11:50:55,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 63 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-18 11:50:55,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2023-02-18 11:50:55,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 96. [2023-02-18 11:50:55,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 64 states have (on average 1.046875) internal successors, (67), 64 states have internal predecessors, (67), 30 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-02-18 11:50:55,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 127 transitions. [2023-02-18 11:50:55,782 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 127 transitions. Word has length 89 [2023-02-18 11:50:55,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 11:50:55,782 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 127 transitions. [2023-02-18 11:50:55,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 19 states have internal predecessors, (58), 12 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 12 states have call predecessors, (36), 12 states have call successors, (36) [2023-02-18 11:50:55,783 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 127 transitions. [2023-02-18 11:50:55,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2023-02-18 11:50:55,787 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 11:50:55,787 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 11:50:55,796 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-18 11:50:55,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-02-18 11:50:55,994 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 11:50:55,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 11:50:55,995 INFO L85 PathProgramCache]: Analyzing trace with hash 548463335, now seen corresponding path program 3 times [2023-02-18 11:50:55,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 11:50:55,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723904624] [2023-02-18 11:50:55,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 11:50:55,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 11:50:56,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:50:56,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 11:50:56,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:50:56,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-18 11:50:56,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:50:56,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-02-18 11:50:56,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:50:56,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-02-18 11:50:56,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:50:56,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-02-18 11:50:56,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:50:56,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-02-18 11:50:56,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:50:56,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-02-18 11:50:56,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:50:56,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-02-18 11:50:56,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:50:56,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-02-18 11:50:56,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:50:56,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-02-18 11:50:56,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:50:56,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-02-18 11:50:56,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:50:56,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-02-18 11:50:56,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:50:56,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-02-18 11:50:56,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:50:56,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-02-18 11:50:56,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:50:56,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-02-18 11:50:56,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:50:56,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-02-18 11:50:56,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:50:56,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-02-18 11:50:56,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:50:56,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-02-18 11:50:56,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:50:56,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-02-18 11:50:56,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:50:56,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-02-18 11:50:56,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:50:56,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-02-18 11:50:56,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:50:56,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-02-18 11:50:56,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:50:56,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-02-18 11:50:56,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:50:56,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-02-18 11:50:56,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:50:56,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-02-18 11:50:56,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:50:56,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-02-18 11:50:56,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:50:56,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-02-18 11:50:56,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:50:56,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-02-18 11:50:56,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:50:56,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2023-02-18 11:50:56,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:50:56,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-02-18 11:50:56,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:50:56,622 INFO L134 CoverageAnalysis]: Checked inductivity of 2120 backedges. 0 proven. 280 refuted. 0 times theorem prover too weak. 1840 trivial. 0 not checked. [2023-02-18 11:50:56,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 11:50:56,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723904624] [2023-02-18 11:50:56,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723904624] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 11:50:56,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1209520908] [2023-02-18 11:50:56,628 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-18 11:50:56,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 11:50:56,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 11:50:56,633 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) [2023-02-18 11:50:56,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-18 11:50:57,599 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2023-02-18 11:50:57,600 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 11:50:57,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 13 conjunts are in the unsatisfiable core [2023-02-18 11:50:57,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 11:50:57,724 INFO L134 CoverageAnalysis]: Checked inductivity of 2120 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 2020 trivial. 0 not checked. [2023-02-18 11:50:57,724 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 11:50:57,930 INFO L134 CoverageAnalysis]: Checked inductivity of 2120 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 2020 trivial. 0 not checked. [2023-02-18 11:50:57,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1209520908] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 11:50:57,930 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 11:50:57,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 14] total 37 [2023-02-18 11:50:57,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331014731] [2023-02-18 11:50:57,931 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 11:50:57,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-02-18 11:50:57,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 11:50:57,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-02-18 11:50:57,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=579, Invalid=753, Unknown=0, NotChecked=0, Total=1332 [2023-02-18 11:50:57,937 INFO L87 Difference]: Start difference. First operand 96 states and 127 transitions. Second operand has 37 states, 37 states have (on average 2.7567567567567566) internal successors, (102), 37 states have internal predecessors, (102), 12 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 12 states have call predecessors, (36), 12 states have call successors, (36) [2023-02-18 11:50:58,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 11:50:58,780 INFO L93 Difference]: Finished difference Result 342 states and 434 transitions. [2023-02-18 11:50:58,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-02-18 11:50:58,781 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.7567567567567566) internal successors, (102), 37 states have internal predecessors, (102), 12 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 12 states have call predecessors, (36), 12 states have call successors, (36) Word has length 209 [2023-02-18 11:50:58,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 11:50:58,784 INFO L225 Difference]: With dead ends: 342 [2023-02-18 11:50:58,785 INFO L226 Difference]: Without dead ends: 313 [2023-02-18 11:50:58,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 500 GetRequests, 453 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 746 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=876, Invalid=1380, Unknown=0, NotChecked=0, Total=2256 [2023-02-18 11:50:58,787 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 634 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 368 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 664 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 368 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-02-18 11:50:58,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [664 Valid, 131 Invalid, 899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [368 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-02-18 11:50:58,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2023-02-18 11:50:58,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 192. [2023-02-18 11:50:58,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 124 states have (on average 1.0241935483870968) internal successors, (127), 124 states have internal predecessors, (127), 66 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2023-02-18 11:50:58,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 259 transitions. [2023-02-18 11:50:58,811 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 259 transitions. Word has length 209 [2023-02-18 11:50:58,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 11:50:58,812 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 259 transitions. [2023-02-18 11:50:58,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.7567567567567566) internal successors, (102), 37 states have internal predecessors, (102), 12 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 12 states have call predecessors, (36), 12 states have call successors, (36) [2023-02-18 11:50:58,813 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 259 transitions. [2023-02-18 11:50:58,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 450 [2023-02-18 11:50:58,819 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 11:50:58,819 INFO L195 NwaCegarLoop]: trace histogram [66, 66, 66, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 11:50:58,831 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-18 11:50:59,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 11:50:59,030 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 11:50:59,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 11:50:59,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1915094685, now seen corresponding path program 4 times [2023-02-18 11:50:59,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 11:50:59,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527725826] [2023-02-18 11:50:59,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 11:50:59,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 11:50:59,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:51:00,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 11:51:00,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:51:00,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-18 11:51:00,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:51:00,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-02-18 11:51:00,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:51:00,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-02-18 11:51:00,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:51:00,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-02-18 11:51:00,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:51:00,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-02-18 11:51:00,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:51:00,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-02-18 11:51:00,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:51:00,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-02-18 11:51:00,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:51:00,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-02-18 11:51:00,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:51:00,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-02-18 11:51:00,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:51:00,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-02-18 11:51:00,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:51:00,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-02-18 11:51:00,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:51:00,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-02-18 11:51:00,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:51:00,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-02-18 11:51:00,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:51:00,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-02-18 11:51:00,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:51:00,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-02-18 11:51:00,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:51:00,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-02-18 11:51:00,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:51:00,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-02-18 11:51:00,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:51:00,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-02-18 11:51:00,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:51:00,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-02-18 11:51:00,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:51:00,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-02-18 11:51:00,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:51:00,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-02-18 11:51:00,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:51:00,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-02-18 11:51:00,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:51:00,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-02-18 11:51:00,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:51:00,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-02-18 11:51:00,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:51:00,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-02-18 11:51:00,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:51:00,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-02-18 11:51:00,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:51:00,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-02-18 11:51:00,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:51:00,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2023-02-18 11:51:00,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:51:00,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-02-18 11:51:00,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:51:00,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2023-02-18 11:51:00,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:51:00,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2023-02-18 11:51:00,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:51:00,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2023-02-18 11:51:00,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:51:00,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2023-02-18 11:51:00,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:51:00,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2023-02-18 11:51:00,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:51:00,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2023-02-18 11:51:00,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:51:00,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2023-02-18 11:51:00,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:51:00,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2023-02-18 11:51:00,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:51:00,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2023-02-18 11:51:00,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:51:00,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2023-02-18 11:51:00,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:51:00,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2023-02-18 11:51:00,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:51:00,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2023-02-18 11:51:00,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:51:00,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2023-02-18 11:51:00,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:51:00,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2023-02-18 11:51:00,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:51:00,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2023-02-18 11:51:00,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:51:00,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2023-02-18 11:51:00,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:51:00,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2023-02-18 11:51:00,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:51:00,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2023-02-18 11:51:00,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:51:00,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2023-02-18 11:51:00,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:51:00,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2023-02-18 11:51:00,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:51:00,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2023-02-18 11:51:00,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:51:00,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2023-02-18 11:51:00,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:51:00,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2023-02-18 11:51:00,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:51:00,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2023-02-18 11:51:00,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:51:00,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2023-02-18 11:51:00,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:51:00,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2023-02-18 11:51:00,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:51:00,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2023-02-18 11:51:00,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:51:00,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2023-02-18 11:51:00,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:51:00,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2023-02-18 11:51:00,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:51:00,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2023-02-18 11:51:00,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:51:00,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2023-02-18 11:51:00,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:51:00,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2023-02-18 11:51:00,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:51:00,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2023-02-18 11:51:00,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:51:00,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2023-02-18 11:51:00,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:51:00,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2023-02-18 11:51:00,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:51:00,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2023-02-18 11:51:00,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:51:00,600 INFO L134 CoverageAnalysis]: Checked inductivity of 10472 backedges. 0 proven. 1408 refuted. 0 times theorem prover too weak. 9064 trivial. 0 not checked. [2023-02-18 11:51:00,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 11:51:00,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527725826] [2023-02-18 11:51:00,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527725826] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 11:51:00,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1939298569] [2023-02-18 11:51:00,602 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-18 11:51:00,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 11:51:00,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 11:51:00,603 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) [2023-02-18 11:51:00,606 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process