./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/s32if.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 26d01a9c 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-fpi/s32if.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 371b46898ac196d32c6a3ef4c51b315e7fba4a376d0f69ff343a10a3b7c63d98 --- Real Ultimate output --- This is Ultimate 0.2.2-?-26d01a9 [2023-02-17 21:36:38,754 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-17 21:36:38,756 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-17 21:36:38,785 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-17 21:36:38,786 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-17 21:36:38,788 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-17 21:36:38,790 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-17 21:36:38,791 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-17 21:36:38,793 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-17 21:36:38,796 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-17 21:36:38,797 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-17 21:36:38,799 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-17 21:36:38,799 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-17 21:36:38,800 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-17 21:36:38,801 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-17 21:36:38,803 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-17 21:36:38,803 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-17 21:36:38,804 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-17 21:36:38,805 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-17 21:36:38,809 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-17 21:36:38,809 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-17 21:36:38,810 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-17 21:36:38,811 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-17 21:36:38,812 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-17 21:36:38,817 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-17 21:36:38,817 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-17 21:36:38,818 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-17 21:36:38,818 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-17 21:36:38,819 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-17 21:36:38,819 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-17 21:36:38,820 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-17 21:36:38,820 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-17 21:36:38,821 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-17 21:36:38,822 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-17 21:36:38,823 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-17 21:36:38,823 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-17 21:36:38,823 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-17 21:36:38,824 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-17 21:36:38,824 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-17 21:36:38,825 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-17 21:36:38,825 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-17 21:36:38,826 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-17 21:36:38,848 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-17 21:36:38,848 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-17 21:36:38,849 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-17 21:36:38,849 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-17 21:36:38,849 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-17 21:36:38,850 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-17 21:36:38,850 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-17 21:36:38,850 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-17 21:36:38,850 INFO L138 SettingsManager]: * Use SBE=true [2023-02-17 21:36:38,851 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-17 21:36:38,851 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-17 21:36:38,851 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-17 21:36:38,852 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-17 21:36:38,852 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-17 21:36:38,852 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-17 21:36:38,852 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-17 21:36:38,852 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-17 21:36:38,852 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-17 21:36:38,852 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-17 21:36:38,853 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-17 21:36:38,853 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-17 21:36:38,853 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-17 21:36:38,853 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-17 21:36:38,853 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-17 21:36:38,853 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 21:36:38,854 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-17 21:36:38,854 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-17 21:36:38,854 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-17 21:36:38,854 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-17 21:36:38,854 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-17 21:36:38,854 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-17 21:36:38,855 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-17 21:36:38,855 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-17 21:36:38,855 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-17 21:36:38,855 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-17 21:36:38,855 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 371b46898ac196d32c6a3ef4c51b315e7fba4a376d0f69ff343a10a3b7c63d98 [2023-02-17 21:36:39,070 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-17 21:36:39,088 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-17 21:36:39,090 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-17 21:36:39,091 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-17 21:36:39,091 INFO L275 PluginConnector]: CDTParser initialized [2023-02-17 21:36:39,092 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/s32if.c [2023-02-17 21:36:39,962 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-17 21:36:40,178 INFO L351 CDTParser]: Found 1 translation units. [2023-02-17 21:36:40,179 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/s32if.c [2023-02-17 21:36:40,184 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71555b17f/99bb7a96667e40b79231c3ebba8b8553/FLAGf2402dc03 [2023-02-17 21:36:40,199 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71555b17f/99bb7a96667e40b79231c3ebba8b8553 [2023-02-17 21:36:40,201 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-17 21:36:40,202 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-17 21:36:40,203 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-17 21:36:40,203 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-17 21:36:40,205 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-17 21:36:40,205 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 09:36:40" (1/1) ... [2023-02-17 21:36:40,206 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10f5953f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:36:40, skipping insertion in model container [2023-02-17 21:36:40,206 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 09:36:40" (1/1) ... [2023-02-17 21:36:40,211 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-17 21:36:40,221 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-17 21:36:40,335 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-fpi/s32if.c[588,601] [2023-02-17 21:36:40,356 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 21:36:40,366 INFO L203 MainTranslator]: Completed pre-run [2023-02-17 21:36:40,377 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-fpi/s32if.c[588,601] [2023-02-17 21:36:40,390 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 21:36:40,399 INFO L208 MainTranslator]: Completed translation [2023-02-17 21:36:40,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:36:40 WrapperNode [2023-02-17 21:36:40,400 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-17 21:36:40,400 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-17 21:36:40,400 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-17 21:36:40,401 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-17 21:36:40,405 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:36:40" (1/1) ... [2023-02-17 21:36:40,416 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:36:40" (1/1) ... [2023-02-17 21:36:40,435 INFO L138 Inliner]: procedures = 17, calls = 36, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 98 [2023-02-17 21:36:40,435 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-17 21:36:40,436 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-17 21:36:40,436 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-17 21:36:40,436 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-17 21:36:40,442 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:36:40" (1/1) ... [2023-02-17 21:36:40,442 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:36:40" (1/1) ... [2023-02-17 21:36:40,446 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:36:40" (1/1) ... [2023-02-17 21:36:40,447 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:36:40" (1/1) ... [2023-02-17 21:36:40,459 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:36:40" (1/1) ... [2023-02-17 21:36:40,462 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:36:40" (1/1) ... [2023-02-17 21:36:40,466 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:36:40" (1/1) ... [2023-02-17 21:36:40,466 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:36:40" (1/1) ... [2023-02-17 21:36:40,469 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-17 21:36:40,470 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-17 21:36:40,470 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-17 21:36:40,470 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-17 21:36:40,471 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:36:40" (1/1) ... [2023-02-17 21:36:40,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 21:36:40,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 21:36:40,526 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) [2023-02-17 21:36:40,541 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 [2023-02-17 21:36:40,553 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-17 21:36:40,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-17 21:36:40,553 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-17 21:36:40,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-17 21:36:40,553 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-17 21:36:40,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-17 21:36:40,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-17 21:36:40,554 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-17 21:36:40,554 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-17 21:36:40,598 INFO L235 CfgBuilder]: Building ICFG [2023-02-17 21:36:40,600 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-17 21:36:40,698 INFO L276 CfgBuilder]: Performing block encoding [2023-02-17 21:36:40,702 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-17 21:36:40,702 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2023-02-17 21:36:40,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 09:36:40 BoogieIcfgContainer [2023-02-17 21:36:40,704 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-17 21:36:40,705 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-17 21:36:40,705 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-17 21:36:40,707 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-17 21:36:40,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.02 09:36:40" (1/3) ... [2023-02-17 21:36:40,708 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@464d5168 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 09:36:40, skipping insertion in model container [2023-02-17 21:36:40,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:36:40" (2/3) ... [2023-02-17 21:36:40,708 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@464d5168 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 09:36:40, skipping insertion in model container [2023-02-17 21:36:40,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 09:36:40" (3/3) ... [2023-02-17 21:36:40,709 INFO L112 eAbstractionObserver]: Analyzing ICFG s32if.c [2023-02-17 21:36:40,720 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-17 21:36:40,720 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-17 21:36:40,747 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-17 21:36:40,751 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;@539adfcf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-17 21:36:40,751 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-17 21:36:40,754 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 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) [2023-02-17 21:36:40,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-02-17 21:36:40,758 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 21:36:40,758 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 21:36:40,758 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 21:36:40,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 21:36:40,762 INFO L85 PathProgramCache]: Analyzing trace with hash -845308063, now seen corresponding path program 1 times [2023-02-17 21:36:40,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 21:36:40,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251704958] [2023-02-17 21:36:40,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 21:36:40,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 21:36:40,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 21:36:40,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 21:36:40,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 21:36:40,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251704958] [2023-02-17 21:36:40,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251704958] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 21:36:40,867 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 21:36:40,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-17 21:36:40,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986317379] [2023-02-17 21:36:40,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 21:36:40,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-17 21:36:40,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 21:36:40,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-17 21:36:40,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-17 21:36:40,912 INFO L87 Difference]: Start difference. First operand has 23 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 21:36:40,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 21:36:40,923 INFO L93 Difference]: Finished difference Result 42 states and 60 transitions. [2023-02-17 21:36:40,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-17 21:36:40,924 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-02-17 21:36:40,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 21:36:40,929 INFO L225 Difference]: With dead ends: 42 [2023-02-17 21:36:40,929 INFO L226 Difference]: Without dead ends: 19 [2023-02-17 21:36:40,931 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 [2023-02-17 21:36:40,933 INFO L413 NwaCegarLoop]: 28 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, 28 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 [2023-02-17 21:36:40,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 21:36:40,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2023-02-17 21:36:40,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2023-02-17 21:36:40,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 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) [2023-02-17 21:36:40,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2023-02-17 21:36:40,952 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 13 [2023-02-17 21:36:40,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 21:36:40,953 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2023-02-17 21:36:40,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 21:36:40,953 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2023-02-17 21:36:40,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-02-17 21:36:40,954 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 21:36:40,954 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 21:36:40,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-17 21:36:40,954 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 21:36:40,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 21:36:40,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1238662774, now seen corresponding path program 1 times [2023-02-17 21:36:40,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 21:36:40,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321456159] [2023-02-17 21:36:40,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 21:36:40,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 21:36:40,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 21:36:41,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 21:36:41,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 21:36:41,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321456159] [2023-02-17 21:36:41,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321456159] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 21:36:41,039 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 21:36:41,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-17 21:36:41,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686470786] [2023-02-17 21:36:41,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 21:36:41,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-17 21:36:41,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 21:36:41,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-17 21:36:41,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-17 21:36:41,041 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 21:36:41,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 21:36:41,084 INFO L93 Difference]: Finished difference Result 39 states and 51 transitions. [2023-02-17 21:36:41,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-17 21:36:41,085 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-02-17 21:36:41,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 21:36:41,085 INFO L225 Difference]: With dead ends: 39 [2023-02-17 21:36:41,085 INFO L226 Difference]: Without dead ends: 27 [2023-02-17 21:36:41,086 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-17 21:36:41,087 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 35 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 21:36:41,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 11 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 21:36:41,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-02-17 21:36:41,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 22. [2023-02-17 21:36:41,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 21:36:41,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2023-02-17 21:36:41,091 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 13 [2023-02-17 21:36:41,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 21:36:41,091 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2023-02-17 21:36:41,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 21:36:41,092 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2023-02-17 21:36:41,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-02-17 21:36:41,092 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 21:36:41,092 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 21:36:41,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-17 21:36:41,093 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 21:36:41,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 21:36:41,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1944018757, now seen corresponding path program 1 times [2023-02-17 21:36:41,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 21:36:41,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572735211] [2023-02-17 21:36:41,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 21:36:41,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 21:36:41,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 21:36:41,595 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-17 21:36:41,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 21:36:41,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572735211] [2023-02-17 21:36:41,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572735211] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 21:36:41,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455882350] [2023-02-17 21:36:41,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 21:36:41,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 21:36:41,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 21:36:41,600 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) [2023-02-17 21:36:41,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-17 21:36:41,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 21:36:41,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 35 conjunts are in the unsatisfiable core [2023-02-17 21:36:41,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 21:36:41,736 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-02-17 21:36:41,740 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-17 21:36:41,755 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-02-17 21:36:41,780 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-02-17 21:36:41,848 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 27 [2023-02-17 21:36:41,893 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 29 [2023-02-17 21:36:41,903 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-17 21:36:41,903 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 21:36:41,948 WARN L837 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~i~0#1| Int) (|ULTIMATE.start_main_~a~0#1.offset| Int) (v_ArrVal_45 (Array Int Int))) (let ((.cse0 (select v_ArrVal_45 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| 4))))) (or (not (= 4 .cse0)) (= (* c_~N~0 4) (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_45) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) .cse0))))) is different from false [2023-02-17 21:36:42,027 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 21:36:42,029 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 29 [2023-02-17 21:36:42,031 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-17 21:36:42,033 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 18 [2023-02-17 21:36:42,038 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2023-02-17 21:36:42,060 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-02-17 21:36:42,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1455882350] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 21:36:42,061 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 21:36:42,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 11] total 23 [2023-02-17 21:36:42,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543831900] [2023-02-17 21:36:42,062 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 21:36:42,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-02-17 21:36:42,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 21:36:42,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-02-17 21:36:42,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=357, Unknown=1, NotChecked=40, Total=506 [2023-02-17 21:36:42,068 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 23 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 23 states have internal predecessors, (50), 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) [2023-02-17 21:36:42,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 21:36:42,413 INFO L93 Difference]: Finished difference Result 48 states and 58 transitions. [2023-02-17 21:36:42,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-02-17 21:36:42,414 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 23 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-02-17 21:36:42,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 21:36:42,416 INFO L225 Difference]: With dead ends: 48 [2023-02-17 21:36:42,416 INFO L226 Difference]: Without dead ends: 44 [2023-02-17 21:36:42,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 28 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 1 IntricatePredicates, 2 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=285, Invalid=840, Unknown=1, NotChecked=64, Total=1190 [2023-02-17 21:36:42,417 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 109 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 29 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 41 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-17 21:36:42,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 41 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 243 Invalid, 3 Unknown, 41 Unchecked, 0.2s Time] [2023-02-17 21:36:42,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-02-17 21:36:42,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 35. [2023-02-17 21:36:42,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.2941176470588236) internal successors, (44), 34 states have internal predecessors, (44), 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) [2023-02-17 21:36:42,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 44 transitions. [2023-02-17 21:36:42,429 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 44 transitions. Word has length 21 [2023-02-17 21:36:42,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 21:36:42,430 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 44 transitions. [2023-02-17 21:36:42,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 23 states have internal predecessors, (50), 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) [2023-02-17 21:36:42,430 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 44 transitions. [2023-02-17 21:36:42,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-02-17 21:36:42,431 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 21:36:42,431 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 21:36:42,438 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-17 21:36:42,636 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 [2023-02-17 21:36:42,636 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 21:36:42,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 21:36:42,637 INFO L85 PathProgramCache]: Analyzing trace with hash 2001277059, now seen corresponding path program 1 times [2023-02-17 21:36:42,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 21:36:42,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701542132] [2023-02-17 21:36:42,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 21:36:42,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 21:36:42,658 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 21:36:42,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2051051576] [2023-02-17 21:36:42,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 21:36:42,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 21:36:42,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 21:36:42,660 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) [2023-02-17 21:36:42,662 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-17 21:36:42,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 21:36:42,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 17 conjunts are in the unsatisfiable core [2023-02-17 21:36:42,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 21:36:42,734 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 17 [2023-02-17 21:36:42,747 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 9 [2023-02-17 21:36:42,752 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-17 21:36:42,753 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 21:36:42,777 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 37 [2023-02-17 21:36:42,780 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 21:36:42,780 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 58 [2023-02-17 21:36:42,786 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-17 21:36:42,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 21:36:42,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701542132] [2023-02-17 21:36:42,787 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 21:36:42,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051051576] [2023-02-17 21:36:42,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2051051576] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 21:36:42,788 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 21:36:42,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2023-02-17 21:36:42,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778738466] [2023-02-17 21:36:42,789 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 21:36:42,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-17 21:36:42,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 21:36:42,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-17 21:36:42,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-02-17 21:36:42,790 INFO L87 Difference]: Start difference. First operand 35 states and 44 transitions. Second operand has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 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) [2023-02-17 21:36:42,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 21:36:42,897 INFO L93 Difference]: Finished difference Result 75 states and 99 transitions. [2023-02-17 21:36:42,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-17 21:36:42,898 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-02-17 21:36:42,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 21:36:42,899 INFO L225 Difference]: With dead ends: 75 [2023-02-17 21:36:42,899 INFO L226 Difference]: Without dead ends: 63 [2023-02-17 21:36:42,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2023-02-17 21:36:42,900 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 28 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 21:36:42,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 63 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 21:36:42,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2023-02-17 21:36:42,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 47. [2023-02-17 21:36:42,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.3043478260869565) internal successors, (60), 46 states have internal predecessors, (60), 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) [2023-02-17 21:36:42,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 60 transitions. [2023-02-17 21:36:42,913 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 60 transitions. Word has length 21 [2023-02-17 21:36:42,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 21:36:42,913 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 60 transitions. [2023-02-17 21:36:42,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 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) [2023-02-17 21:36:42,913 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 60 transitions. [2023-02-17 21:36:42,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-02-17 21:36:42,914 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 21:36:42,914 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 21:36:42,920 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-17 21:36:43,120 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 [2023-02-17 21:36:43,121 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 21:36:43,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 21:36:43,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1592625659, now seen corresponding path program 1 times [2023-02-17 21:36:43,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 21:36:43,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955386425] [2023-02-17 21:36:43,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 21:36:43,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 21:36:43,131 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 21:36:43,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [866058469] [2023-02-17 21:36:43,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 21:36:43,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 21:36:43,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 21:36:43,133 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) [2023-02-17 21:36:43,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-17 21:36:43,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 21:36:43,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 13 conjunts are in the unsatisfiable core [2023-02-17 21:36:43,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 21:36:43,179 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-02-17 21:36:43,185 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2023-02-17 21:36:43,188 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-17 21:36:43,188 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 21:36:43,197 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2023-02-17 21:36:43,198 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 28 [2023-02-17 21:36:43,203 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-17 21:36:43,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 21:36:43,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955386425] [2023-02-17 21:36:43,203 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 21:36:43,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [866058469] [2023-02-17 21:36:43,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [866058469] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 21:36:43,203 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 21:36:43,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2023-02-17 21:36:43,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525591166] [2023-02-17 21:36:43,204 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 21:36:43,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-17 21:36:43,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 21:36:43,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-17 21:36:43,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-02-17 21:36:43,205 INFO L87 Difference]: Start difference. First operand 47 states and 60 transitions. Second operand has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 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) [2023-02-17 21:36:43,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 21:36:43,251 INFO L93 Difference]: Finished difference Result 78 states and 102 transitions. [2023-02-17 21:36:43,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-17 21:36:43,252 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-02-17 21:36:43,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 21:36:43,253 INFO L225 Difference]: With dead ends: 78 [2023-02-17 21:36:43,253 INFO L226 Difference]: Without dead ends: 57 [2023-02-17 21:36:43,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2023-02-17 21:36:43,253 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 9 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 21:36:43,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 51 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 21:36:43,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2023-02-17 21:36:43,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 49. [2023-02-17 21:36:43,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.2916666666666667) internal successors, (62), 48 states have internal predecessors, (62), 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) [2023-02-17 21:36:43,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 62 transitions. [2023-02-17 21:36:43,260 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 62 transitions. Word has length 21 [2023-02-17 21:36:43,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 21:36:43,260 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 62 transitions. [2023-02-17 21:36:43,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 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) [2023-02-17 21:36:43,261 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 62 transitions. [2023-02-17 21:36:43,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-02-17 21:36:43,261 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 21:36:43,261 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 21:36:43,266 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-17 21:36:43,465 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 [2023-02-17 21:36:43,466 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 21:36:43,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 21:36:43,467 INFO L85 PathProgramCache]: Analyzing trace with hash -823792505, now seen corresponding path program 2 times [2023-02-17 21:36:43,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 21:36:43,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66866110] [2023-02-17 21:36:43,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 21:36:43,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 21:36:43,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 21:36:43,509 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-17 21:36:43,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 21:36:43,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66866110] [2023-02-17 21:36:43,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66866110] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 21:36:43,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893043494] [2023-02-17 21:36:43,509 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-17 21:36:43,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 21:36:43,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 21:36:43,511 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) [2023-02-17 21:36:43,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-17 21:36:43,560 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-17 21:36:43,560 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 21:36:43,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-17 21:36:43,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 21:36:43,580 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-17 21:36:43,580 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 21:36:43,597 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-17 21:36:43,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [893043494] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 21:36:43,598 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 21:36:43,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2023-02-17 21:36:43,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674620110] [2023-02-17 21:36:43,598 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 21:36:43,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-17 21:36:43,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 21:36:43,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-17 21:36:43,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-02-17 21:36:43,599 INFO L87 Difference]: Start difference. First operand 49 states and 62 transitions. Second operand has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 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) [2023-02-17 21:36:43,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 21:36:43,698 INFO L93 Difference]: Finished difference Result 85 states and 108 transitions. [2023-02-17 21:36:43,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-17 21:36:43,698 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2023-02-17 21:36:43,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 21:36:43,699 INFO L225 Difference]: With dead ends: 85 [2023-02-17 21:36:43,699 INFO L226 Difference]: Without dead ends: 75 [2023-02-17 21:36:43,699 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 37 SyntacticMatches, 5 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2023-02-17 21:36:43,700 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 43 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 21:36:43,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 28 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 21:36:43,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2023-02-17 21:36:43,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 53. [2023-02-17 21:36:43,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.3076923076923077) internal successors, (68), 52 states have internal predecessors, (68), 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) [2023-02-17 21:36:43,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 68 transitions. [2023-02-17 21:36:43,707 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 68 transitions. Word has length 23 [2023-02-17 21:36:43,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 21:36:43,708 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 68 transitions. [2023-02-17 21:36:43,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 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) [2023-02-17 21:36:43,708 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 68 transitions. [2023-02-17 21:36:43,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-02-17 21:36:43,708 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 21:36:43,709 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 21:36:43,713 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-02-17 21:36:43,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 21:36:43,913 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 21:36:43,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 21:36:43,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1832157868, now seen corresponding path program 3 times [2023-02-17 21:36:43,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 21:36:43,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895743299] [2023-02-17 21:36:43,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 21:36:43,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 21:36:43,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 21:36:43,956 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-17 21:36:43,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 21:36:43,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895743299] [2023-02-17 21:36:43,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895743299] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 21:36:43,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [484860648] [2023-02-17 21:36:43,957 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-17 21:36:43,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 21:36:43,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 21:36:43,958 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 21:36:43,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-17 21:36:44,006 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-02-17 21:36:44,006 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 21:36:44,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-17 21:36:44,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 21:36:44,021 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-17 21:36:44,021 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 21:36:44,039 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-17 21:36:44,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [484860648] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 21:36:44,039 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 21:36:44,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2023-02-17 21:36:44,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123858315] [2023-02-17 21:36:44,040 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 21:36:44,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-17 21:36:44,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 21:36:44,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-17 21:36:44,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-02-17 21:36:44,041 INFO L87 Difference]: Start difference. First operand 53 states and 68 transitions. Second operand has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 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) [2023-02-17 21:36:44,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 21:36:44,120 INFO L93 Difference]: Finished difference Result 78 states and 97 transitions. [2023-02-17 21:36:44,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-17 21:36:44,121 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 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 24 [2023-02-17 21:36:44,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 21:36:44,121 INFO L225 Difference]: With dead ends: 78 [2023-02-17 21:36:44,121 INFO L226 Difference]: Without dead ends: 42 [2023-02-17 21:36:44,121 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 39 SyntacticMatches, 5 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2023-02-17 21:36:44,122 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 33 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 21:36:44,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 24 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 21:36:44,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-02-17 21:36:44,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 36. [2023-02-17 21:36:44,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.2285714285714286) internal successors, (43), 35 states have internal predecessors, (43), 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) [2023-02-17 21:36:44,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2023-02-17 21:36:44,127 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 24 [2023-02-17 21:36:44,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 21:36:44,127 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2023-02-17 21:36:44,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 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) [2023-02-17 21:36:44,127 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2023-02-17 21:36:44,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-02-17 21:36:44,128 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 21:36:44,128 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 21:36:44,143 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-17 21:36:44,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 21:36:44,333 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 21:36:44,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 21:36:44,333 INFO L85 PathProgramCache]: Analyzing trace with hash -14433298, now seen corresponding path program 4 times [2023-02-17 21:36:44,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 21:36:44,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068955848] [2023-02-17 21:36:44,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 21:36:44,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 21:36:44,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 21:36:44,664 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-17 21:36:44,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 21:36:44,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068955848] [2023-02-17 21:36:44,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068955848] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 21:36:44,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089079639] [2023-02-17 21:36:44,665 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-17 21:36:44,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 21:36:44,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 21:36:44,666 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 21:36:44,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-17 21:36:44,722 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-17 21:36:44,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 21:36:44,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 43 conjunts are in the unsatisfiable core [2023-02-17 21:36:44,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 21:36:44,729 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-02-17 21:36:44,731 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-17 21:36:44,748 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-02-17 21:36:44,765 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-02-17 21:36:44,810 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-02-17 21:36:44,835 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 21:36:44,835 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 47 [2023-02-17 21:36:44,837 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-17 21:36:44,871 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 21:36:44,872 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 61 treesize of output 98 [2023-02-17 21:36:45,043 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 21:36:45,044 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 77 case distinctions, treesize of input 438 treesize of output 1926