./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/condg.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a31fd051 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/condg.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 2909e53e12aac54327f6ce090ad489c978c1fbcfb0ae8bd4172abe8a99b2cb53 --- Real Ultimate output --- This is Ultimate 0.2.2-?-a31fd05 [2023-02-15 09:57:01,470 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 09:57:01,482 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 09:57:01,513 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 09:57:01,513 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 09:57:01,516 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 09:57:01,517 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 09:57:01,519 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 09:57:01,520 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 09:57:01,524 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 09:57:01,525 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 09:57:01,527 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 09:57:01,527 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 09:57:01,528 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 09:57:01,530 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 09:57:01,532 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 09:57:01,532 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 09:57:01,533 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 09:57:01,534 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 09:57:01,538 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 09:57:01,539 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 09:57:01,539 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 09:57:01,540 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 09:57:01,541 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 09:57:01,547 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 09:57:01,547 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 09:57:01,547 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 09:57:01,548 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 09:57:01,549 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 09:57:01,549 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 09:57:01,549 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 09:57:01,551 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 09:57:01,552 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 09:57:01,552 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 09:57:01,553 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 09:57:01,553 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 09:57:01,554 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 09:57:01,554 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 09:57:01,554 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 09:57:01,554 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 09:57:01,555 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 09:57:01,556 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-15 09:57:01,568 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 09:57:01,568 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 09:57:01,568 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 09:57:01,568 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 09:57:01,569 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 09:57:01,569 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 09:57:01,569 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 09:57:01,570 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 09:57:01,570 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 09:57:01,570 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 09:57:01,570 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-15 09:57:01,570 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 09:57:01,570 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-15 09:57:01,570 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 09:57:01,571 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-15 09:57:01,571 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 09:57:01,571 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-15 09:57:01,571 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-15 09:57:01,571 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-15 09:57:01,571 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 09:57:01,571 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-15 09:57:01,572 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 09:57:01,572 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 09:57:01,572 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 09:57:01,572 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 09:57:01,572 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 09:57:01,572 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 09:57:01,573 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-15 09:57:01,573 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 09:57:01,573 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-15 09:57:01,573 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 09:57:01,573 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-15 09:57:01,573 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 09:57:01,573 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 09:57:01,574 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 09:57:01,574 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2909e53e12aac54327f6ce090ad489c978c1fbcfb0ae8bd4172abe8a99b2cb53 [2023-02-15 09:57:01,759 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 09:57:01,774 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 09:57:01,775 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 09:57:01,776 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 09:57:01,776 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 09:57:01,777 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/condg.c [2023-02-15 09:57:02,679 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 09:57:02,828 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 09:57:02,832 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/condg.c [2023-02-15 09:57:02,837 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/487e99d3e/d056ae27f15446dc9f460ae1c2964bbe/FLAG37bd09026 [2023-02-15 09:57:02,854 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/487e99d3e/d056ae27f15446dc9f460ae1c2964bbe [2023-02-15 09:57:02,856 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 09:57:02,857 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 09:57:02,861 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 09:57:02,861 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 09:57:02,863 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 09:57:02,863 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 09:57:02" (1/1) ... [2023-02-15 09:57:02,864 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c477ee4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:57:02, skipping insertion in model container [2023-02-15 09:57:02,864 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 09:57:02" (1/1) ... [2023-02-15 09:57:02,869 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 09:57:02,889 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 09:57:02,998 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/condg.c[588,601] [2023-02-15 09:57:03,016 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 09:57:03,026 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 09:57:03,038 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/condg.c[588,601] [2023-02-15 09:57:03,050 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 09:57:03,059 INFO L208 MainTranslator]: Completed translation [2023-02-15 09:57:03,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:57:03 WrapperNode [2023-02-15 09:57:03,060 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 09:57:03,061 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 09:57:03,061 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 09:57:03,061 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 09:57:03,065 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:57:03" (1/1) ... [2023-02-15 09:57:03,079 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:57:03" (1/1) ... [2023-02-15 09:57:03,092 INFO L138 Inliner]: procedures = 17, calls = 32, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 97 [2023-02-15 09:57:03,092 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 09:57:03,092 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 09:57:03,093 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 09:57:03,093 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 09:57:03,099 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:57:03" (1/1) ... [2023-02-15 09:57:03,099 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:57:03" (1/1) ... [2023-02-15 09:57:03,101 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:57:03" (1/1) ... [2023-02-15 09:57:03,101 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:57:03" (1/1) ... [2023-02-15 09:57:03,104 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:57:03" (1/1) ... [2023-02-15 09:57:03,106 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:57:03" (1/1) ... [2023-02-15 09:57:03,107 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:57:03" (1/1) ... [2023-02-15 09:57:03,108 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:57:03" (1/1) ... [2023-02-15 09:57:03,109 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 09:57:03,109 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 09:57:03,110 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 09:57:03,110 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 09:57:03,110 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:57:03" (1/1) ... [2023-02-15 09:57:03,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 09:57:03,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 09:57:03,130 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) [2023-02-15 09:57:03,135 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 [2023-02-15 09:57:03,173 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-15 09:57:03,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-15 09:57:03,174 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-15 09:57:03,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-15 09:57:03,174 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-15 09:57:03,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 09:57:03,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 09:57:03,177 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-15 09:57:03,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-15 09:57:03,221 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 09:57:03,222 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 09:57:03,330 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 09:57:03,334 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 09:57:03,334 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2023-02-15 09:57:03,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 09:57:03 BoogieIcfgContainer [2023-02-15 09:57:03,335 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 09:57:03,337 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-15 09:57:03,337 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-15 09:57:03,339 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-15 09:57:03,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 09:57:02" (1/3) ... [2023-02-15 09:57:03,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4142f316 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 09:57:03, skipping insertion in model container [2023-02-15 09:57:03,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:57:03" (2/3) ... [2023-02-15 09:57:03,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4142f316 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 09:57:03, skipping insertion in model container [2023-02-15 09:57:03,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 09:57:03" (3/3) ... [2023-02-15 09:57:03,341 INFO L112 eAbstractionObserver]: Analyzing ICFG condg.c [2023-02-15 09:57:03,367 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-15 09:57:03,367 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-15 09:57:03,394 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-15 09:57:03,398 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;@7c2184c6, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-15 09:57:03,398 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-15 09:57:03,401 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 23 states have (on average 1.565217391304348) internal successors, (36), 24 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) [2023-02-15 09:57:03,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-02-15 09:57:03,404 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 09:57:03,405 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 09:57:03,405 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 09:57:03,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 09:57:03,408 INFO L85 PathProgramCache]: Analyzing trace with hash -592817118, now seen corresponding path program 1 times [2023-02-15 09:57:03,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 09:57:03,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979477058] [2023-02-15 09:57:03,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 09:57:03,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 09:57:03,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:57:03,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 09:57:03,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 09:57:03,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979477058] [2023-02-15 09:57:03,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979477058] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 09:57:03,525 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 09:57:03,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-15 09:57:03,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940698851] [2023-02-15 09:57:03,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 09:57:03,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-15 09:57:03,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 09:57:03,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-15 09:57:03,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-15 09:57:03,551 INFO L87 Difference]: Start difference. First operand has 25 states, 23 states have (on average 1.565217391304348) internal successors, (36), 24 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) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 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) [2023-02-15 09:57:03,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 09:57:03,561 INFO L93 Difference]: Finished difference Result 46 states and 66 transitions. [2023-02-15 09:57:03,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-15 09:57:03,563 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-02-15 09:57:03,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 09:57:03,568 INFO L225 Difference]: With dead ends: 46 [2023-02-15 09:57:03,568 INFO L226 Difference]: Without dead ends: 21 [2023-02-15 09:57:03,571 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 [2023-02-15 09:57:03,578 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 09:57:03,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 09:57:03,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-02-15 09:57:03,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2023-02-15 09:57:03,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 09:57:03,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2023-02-15 09:57:03,613 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 14 [2023-02-15 09:57:03,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 09:57:03,614 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2023-02-15 09:57:03,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 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) [2023-02-15 09:57:03,615 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2023-02-15 09:57:03,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-02-15 09:57:03,615 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 09:57:03,622 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 09:57:03,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-15 09:57:03,623 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 09:57:03,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 09:57:03,626 INFO L85 PathProgramCache]: Analyzing trace with hash 108247460, now seen corresponding path program 1 times [2023-02-15 09:57:03,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 09:57:03,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10999730] [2023-02-15 09:57:03,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 09:57:03,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 09:57:03,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:57:03,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 09:57:03,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 09:57:03,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10999730] [2023-02-15 09:57:03,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10999730] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 09:57:03,734 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 09:57:03,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 09:57:03,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817596973] [2023-02-15 09:57:03,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 09:57:03,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-15 09:57:03,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 09:57:03,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 09:57:03,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-15 09:57:03,737 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2023-02-15 09:57:03,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 09:57:03,780 INFO L93 Difference]: Finished difference Result 48 states and 59 transitions. [2023-02-15 09:57:03,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-15 09:57:03,780 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-02-15 09:57:03,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 09:57:03,781 INFO L225 Difference]: With dead ends: 48 [2023-02-15 09:57:03,781 INFO L226 Difference]: Without dead ends: 34 [2023-02-15 09:57:03,781 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 [2023-02-15 09:57:03,782 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 44 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 09:57:03,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 16 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 09:57:03,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2023-02-15 09:57:03,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 24. [2023-02-15 09:57:03,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 23 states have internal predecessors, (28), 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) [2023-02-15 09:57:03,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2023-02-15 09:57:03,787 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 14 [2023-02-15 09:57:03,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 09:57:03,787 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2023-02-15 09:57:03,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2023-02-15 09:57:03,787 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2023-02-15 09:57:03,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-02-15 09:57:03,788 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 09:57:03,788 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] [2023-02-15 09:57:03,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-15 09:57:03,788 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 09:57:03,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 09:57:03,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1242970242, now seen corresponding path program 1 times [2023-02-15 09:57:03,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 09:57:03,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490356937] [2023-02-15 09:57:03,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 09:57:03,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 09:57:03,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:57:04,287 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 09:57:04,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 09:57:04,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490356937] [2023-02-15 09:57:04,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490356937] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 09:57:04,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1388863147] [2023-02-15 09:57:04,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 09:57:04,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 09:57:04,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 09:57:04,291 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) [2023-02-15 09:57:04,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-15 09:57:04,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:57:04,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 34 conjunts are in the unsatisfiable core [2023-02-15 09:57:04,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 09:57:04,467 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 [2023-02-15 09:57:04,482 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 18 treesize of output 14 [2023-02-15 09:57:04,507 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 [2023-02-15 09:57:04,533 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 46 treesize of output 20 [2023-02-15 09:57:04,557 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 32 treesize of output 20 [2023-02-15 09:57:04,565 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 09:57:04,565 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 09:57:04,622 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_44 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_44) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1)) is different from false [2023-02-15 09:57:04,650 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 09:57:04,651 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 22 treesize of output 23 [2023-02-15 09:57:04,660 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 09:57:04,661 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 32 [2023-02-15 09:57:04,674 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 5 treesize of output 3 [2023-02-15 09:57:04,688 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2023-02-15 09:57:04,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1388863147] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 09:57:04,689 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 09:57:04,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 18 [2023-02-15 09:57:04,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619236653] [2023-02-15 09:57:04,689 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 09:57:04,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-02-15 09:57:04,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 09:57:04,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-02-15 09:57:04,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=223, Unknown=1, NotChecked=30, Total=306 [2023-02-15 09:57:04,691 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 18 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 18 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) [2023-02-15 09:57:05,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 09:57:05,148 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2023-02-15 09:57:05,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-02-15 09:57:05,148 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 18 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) Word has length 21 [2023-02-15 09:57:05,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 09:57:05,151 INFO L225 Difference]: With dead ends: 59 [2023-02-15 09:57:05,151 INFO L226 Difference]: Without dead ends: 57 [2023-02-15 09:57:05,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 30 SyntacticMatches, 5 SemanticMatches, 31 ConstructedPredicates, 1 IntricatePredicates, 2 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=191, Invalid=804, Unknown=1, NotChecked=60, Total=1056 [2023-02-15 09:57:05,155 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 84 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 19 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 46 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 09:57:05,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 121 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 220 Invalid, 3 Unknown, 46 Unchecked, 0.2s Time] [2023-02-15 09:57:05,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2023-02-15 09:57:05,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 33. [2023-02-15 09:57:05,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.28125) internal successors, (41), 32 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) [2023-02-15 09:57:05,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 41 transitions. [2023-02-15 09:57:05,173 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 41 transitions. Word has length 21 [2023-02-15 09:57:05,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 09:57:05,174 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 41 transitions. [2023-02-15 09:57:05,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 18 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) [2023-02-15 09:57:05,174 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 41 transitions. [2023-02-15 09:57:05,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-02-15 09:57:05,175 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 09:57:05,176 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] [2023-02-15 09:57:05,185 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-02-15 09:57:05,381 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 [2023-02-15 09:57:05,382 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 09:57:05,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 09:57:05,383 INFO L85 PathProgramCache]: Analyzing trace with hash 532037120, now seen corresponding path program 1 times [2023-02-15 09:57:05,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 09:57:05,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700783367] [2023-02-15 09:57:05,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 09:57:05,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 09:57:05,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:57:05,756 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 09:57:05,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 09:57:05,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700783367] [2023-02-15 09:57:05,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700783367] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 09:57:05,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1439210470] [2023-02-15 09:57:05,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 09:57:05,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 09:57:05,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 09:57:05,774 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) [2023-02-15 09:57:05,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-15 09:57:05,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:57:05,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 30 conjunts are in the unsatisfiable core [2023-02-15 09:57:05,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 09:57:05,838 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 11 treesize of output 7 [2023-02-15 09:57:05,845 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 [2023-02-15 09:57:05,857 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 23 treesize of output 22 [2023-02-15 09:57:05,949 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 36 treesize of output 23 [2023-02-15 09:57:06,006 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 22 treesize of output 10 [2023-02-15 09:57:06,018 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 09:57:06,018 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 09:57:06,112 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 09:57:06,124 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 09:57:06,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1439210470] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 09:57:06,125 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 09:57:06,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 22 [2023-02-15 09:57:06,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228572504] [2023-02-15 09:57:06,126 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 09:57:06,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-02-15 09:57:06,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 09:57:06,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-02-15 09:57:06,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=365, Unknown=0, NotChecked=0, Total=462 [2023-02-15 09:57:06,128 INFO L87 Difference]: Start difference. First operand 33 states and 41 transitions. Second operand has 22 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 22 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) [2023-02-15 09:57:06,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 09:57:06,397 INFO L93 Difference]: Finished difference Result 83 states and 102 transitions. [2023-02-15 09:57:06,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-02-15 09:57:06,397 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 22 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 21 [2023-02-15 09:57:06,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 09:57:06,399 INFO L225 Difference]: With dead ends: 83 [2023-02-15 09:57:06,399 INFO L226 Difference]: Without dead ends: 68 [2023-02-15 09:57:06,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 29 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=173, Invalid=639, Unknown=0, NotChecked=0, Total=812 [2023-02-15 09:57:06,404 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 59 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 09:57:06,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 119 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 09:57:06,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2023-02-15 09:57:06,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 50. [2023-02-15 09:57:06,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.2857142857142858) internal successors, (63), 49 states have internal predecessors, (63), 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) [2023-02-15 09:57:06,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 63 transitions. [2023-02-15 09:57:06,421 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 63 transitions. Word has length 21 [2023-02-15 09:57:06,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 09:57:06,422 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 63 transitions. [2023-02-15 09:57:06,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 22 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) [2023-02-15 09:57:06,422 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 63 transitions. [2023-02-15 09:57:06,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-02-15 09:57:06,426 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 09:57:06,426 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] [2023-02-15 09:57:06,433 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-15 09:57:06,633 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 [2023-02-15 09:57:06,634 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 09:57:06,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 09:57:06,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1912499326, now seen corresponding path program 2 times [2023-02-15 09:57:06,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 09:57:06,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476666274] [2023-02-15 09:57:06,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 09:57:06,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 09:57:06,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:57:06,718 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 09:57:06,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 09:57:06,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476666274] [2023-02-15 09:57:06,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476666274] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 09:57:06,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1359673693] [2023-02-15 09:57:06,719 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 09:57:06,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 09:57:06,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 09:57:06,721 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) [2023-02-15 09:57:06,723 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-15 09:57:06,771 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 09:57:06,771 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 09:57:06,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-15 09:57:06,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 09:57:06,824 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 09:57:06,824 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 09:57:06,850 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 09:57:06,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1359673693] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 09:57:06,850 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 09:57:06,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2023-02-15 09:57:06,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790350558] [2023-02-15 09:57:06,851 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 09:57:06,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-15 09:57:06,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 09:57:06,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-15 09:57:06,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-02-15 09:57:06,852 INFO L87 Difference]: Start difference. First operand 50 states and 63 transitions. Second operand has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 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) [2023-02-15 09:57:06,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 09:57:06,991 INFO L93 Difference]: Finished difference Result 99 states and 122 transitions. [2023-02-15 09:57:06,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-02-15 09:57:06,992 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 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) Word has length 23 [2023-02-15 09:57:06,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 09:57:06,992 INFO L225 Difference]: With dead ends: 99 [2023-02-15 09:57:06,992 INFO L226 Difference]: Without dead ends: 55 [2023-02-15 09:57:06,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 41 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=110, Invalid=396, Unknown=0, NotChecked=0, Total=506 [2023-02-15 09:57:06,993 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 127 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 09:57:06,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 93 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 09:57:06,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2023-02-15 09:57:06,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 39. [2023-02-15 09:57:06,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.2105263157894737) internal successors, (46), 38 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 09:57:06,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 46 transitions. [2023-02-15 09:57:06,997 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 46 transitions. Word has length 23 [2023-02-15 09:57:06,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 09:57:06,997 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 46 transitions. [2023-02-15 09:57:06,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 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) [2023-02-15 09:57:06,998 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 46 transitions. [2023-02-15 09:57:06,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-15 09:57:06,998 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 09:57:06,998 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 09:57:07,015 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-15 09:57:07,212 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 [2023-02-15 09:57:07,213 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 09:57:07,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 09:57:07,213 INFO L85 PathProgramCache]: Analyzing trace with hash 550852762, now seen corresponding path program 1 times [2023-02-15 09:57:07,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 09:57:07,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614710127] [2023-02-15 09:57:07,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 09:57:07,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 09:57:07,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:57:07,316 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-02-15 09:57:07,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 09:57:07,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614710127] [2023-02-15 09:57:07,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614710127] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 09:57:07,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1013672820] [2023-02-15 09:57:07,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 09:57:07,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 09:57:07,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 09:57:07,318 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) [2023-02-15 09:57:07,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-15 09:57:07,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:57:07,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 18 conjunts are in the unsatisfiable core [2023-02-15 09:57:07,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 09:57:07,373 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 [2023-02-15 09:57:07,396 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 [2023-02-15 09:57:07,417 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 15 treesize of output 17 [2023-02-15 09:57:07,422 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 16 treesize of output 8 [2023-02-15 09:57:07,426 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-02-15 09:57:07,426 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 09:57:09,478 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_152 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_152) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))) is different from false [2023-02-15 09:57:09,498 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 09:57:09,498 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 18 treesize of output 19 [2023-02-15 09:57:09,501 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 14 [2023-02-15 09:57:09,513 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 4 not checked. [2023-02-15 09:57:09,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1013672820] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 09:57:09,513 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 09:57:09,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 9 [2023-02-15 09:57:09,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961318537] [2023-02-15 09:57:09,513 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 09:57:09,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-15 09:57:09,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 09:57:09,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-15 09:57:09,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=38, Unknown=3, NotChecked=12, Total=72 [2023-02-15 09:57:09,515 INFO L87 Difference]: Start difference. First operand 39 states and 46 transitions. Second operand has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 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) [2023-02-15 09:57:09,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 09:57:09,649 INFO L93 Difference]: Finished difference Result 76 states and 88 transitions. [2023-02-15 09:57:09,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-15 09:57:09,649 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 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) Word has length 28 [2023-02-15 09:57:09,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 09:57:09,650 INFO L225 Difference]: With dead ends: 76 [2023-02-15 09:57:09,650 INFO L226 Difference]: Without dead ends: 66 [2023-02-15 09:57:09,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 54 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=43, Invalid=90, Unknown=3, NotChecked=20, Total=156 [2023-02-15 09:57:09,650 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 48 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 42 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 09:57:09,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 63 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 89 Invalid, 0 Unknown, 42 Unchecked, 0.1s Time] [2023-02-15 09:57:09,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2023-02-15 09:57:09,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 44. [2023-02-15 09:57:09,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.2325581395348837) internal successors, (53), 43 states have internal predecessors, (53), 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) [2023-02-15 09:57:09,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2023-02-15 09:57:09,665 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 28 [2023-02-15 09:57:09,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 09:57:09,665 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2023-02-15 09:57:09,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 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) [2023-02-15 09:57:09,665 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2023-02-15 09:57:09,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-15 09:57:09,666 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 09:57:09,666 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 09:57:09,683 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-15 09:57:09,866 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 [2023-02-15 09:57:09,866 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 09:57:09,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 09:57:09,867 INFO L85 PathProgramCache]: Analyzing trace with hash -1969107172, now seen corresponding path program 3 times [2023-02-15 09:57:09,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 09:57:09,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594345932] [2023-02-15 09:57:09,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 09:57:09,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 09:57:09,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:57:10,905 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-15 09:57:10,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 09:57:10,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594345932] [2023-02-15 09:57:10,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594345932] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 09:57:10,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [830055082] [2023-02-15 09:57:10,906 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-15 09:57:10,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 09:57:10,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 09:57:10,907 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) [2023-02-15 09:57:10,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-15 09:57:10,957 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-02-15 09:57:10,958 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 09:57:10,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 41 conjunts are in the unsatisfiable core [2023-02-15 09:57:10,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 09:57:10,968 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 11 treesize of output 7 [2023-02-15 09:57:10,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:57:10,994 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 23 treesize of output 22 [2023-02-15 09:57:11,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:57:11,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:57:11,048 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2023-02-15 09:57:11,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:57:11,129 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 09:57:11,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:57:11,131 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 39 [2023-02-15 09:57:11,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:57:11,202 INFO L321 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2023-02-15 09:57:11,203 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 49 treesize of output 42 [2023-02-15 09:57:11,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:57:11,399 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 09:57:11,399 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 41 treesize of output 35 [2023-02-15 09:57:11,527 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 09:57:11,527 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 09:57:12,529 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 09:57:12,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [830055082] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 09:57:12,529 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 09:57:12,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16, 16] total 42 [2023-02-15 09:57:12,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839640923] [2023-02-15 09:57:12,529 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 09:57:12,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-02-15 09:57:12,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 09:57:12,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-02-15 09:57:12,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=1514, Unknown=0, NotChecked=0, Total=1722 [2023-02-15 09:57:12,531 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand has 42 states, 42 states have (on average 1.4523809523809523) internal successors, (61), 42 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 09:57:13,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 09:57:13,613 INFO L93 Difference]: Finished difference Result 126 states and 151 transitions. [2023-02-15 09:57:13,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-02-15 09:57:13,613 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 1.4523809523809523) internal successors, (61), 42 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2023-02-15 09:57:13,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 09:57:13,614 INFO L225 Difference]: With dead ends: 126 [2023-02-15 09:57:13,614 INFO L226 Difference]: Without dead ends: 91 [2023-02-15 09:57:13,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 794 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=417, Invalid=2889, Unknown=0, NotChecked=0, Total=3306 [2023-02-15 09:57:13,615 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 106 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 605 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-15 09:57:13,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 211 Invalid, 684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 605 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-15 09:57:13,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2023-02-15 09:57:13,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 72. [2023-02-15 09:57:13,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.1830985915492958) internal successors, (84), 71 states have internal predecessors, (84), 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) [2023-02-15 09:57:13,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 84 transitions. [2023-02-15 09:57:13,626 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 84 transitions. Word has length 28 [2023-02-15 09:57:13,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 09:57:13,627 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 84 transitions. [2023-02-15 09:57:13,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 1.4523809523809523) internal successors, (61), 42 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 09:57:13,627 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 84 transitions. [2023-02-15 09:57:13,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-02-15 09:57:13,632 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 09:57:13,632 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, 1, 1, 1] [2023-02-15 09:57:13,640 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-15 09:57:13,840 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 [2023-02-15 09:57:13,841 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 09:57:13,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 09:57:13,841 INFO L85 PathProgramCache]: Analyzing trace with hash -736332014, now seen corresponding path program 1 times [2023-02-15 09:57:13,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 09:57:13,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352212614] [2023-02-15 09:57:13,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 09:57:13,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 09:57:13,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:57:14,458 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 09:57:14,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 09:57:14,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352212614] [2023-02-15 09:57:14,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352212614] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 09:57:14,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1722022301] [2023-02-15 09:57:14,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 09:57:14,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 09:57:14,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 09:57:14,460 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) [2023-02-15 09:57:14,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-15 09:57:14,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:57:14,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 45 conjunts are in the unsatisfiable core [2023-02-15 09:57:14,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 09:57:14,551 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 [2023-02-15 09:57:14,567 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 15 treesize of output 11 [2023-02-15 09:57:14,595 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 [2023-02-15 09:57:14,604 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 [2023-02-15 09:57:14,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:57:14,668 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 23 treesize of output 22 [2023-02-15 09:57:14,688 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 49 treesize of output 21 [2023-02-15 09:57:14,726 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 32 treesize of output 20 [2023-02-15 09:57:14,736 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 09:57:14,736 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 09:57:14,958 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 09:57:14,959 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 24 treesize of output 25 [2023-02-15 09:57:14,964 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 09:57:14,964 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 34 [2023-02-15 09:57:14,972 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 7 treesize of output 3 [2023-02-15 09:57:15,007 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 09:57:15,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1722022301] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 09:57:15,007 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 09:57:15,007 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 13] total 30 [2023-02-15 09:57:15,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940217756] [2023-02-15 09:57:15,007 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 09:57:15,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-02-15 09:57:15,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 09:57:15,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-02-15 09:57:15,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=746, Unknown=2, NotChecked=0, Total=870 [2023-02-15 09:57:15,008 INFO L87 Difference]: Start difference. First operand 72 states and 84 transitions. Second operand has 30 states, 30 states have (on average 2.6) internal successors, (78), 30 states have internal predecessors, (78), 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) [2023-02-15 09:57:15,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 09:57:15,804 INFO L93 Difference]: Finished difference Result 138 states and 158 transitions. [2023-02-15 09:57:15,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-02-15 09:57:15,804 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.6) internal successors, (78), 30 states have internal predecessors, (78), 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 32 [2023-02-15 09:57:15,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 09:57:15,804 INFO L225 Difference]: With dead ends: 138 [2023-02-15 09:57:15,804 INFO L226 Difference]: Without dead ends: 127 [2023-02-15 09:57:15,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 47 SyntacticMatches, 8 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 718 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=401, Invalid=2459, Unknown=2, NotChecked=0, Total=2862 [2023-02-15 09:57:15,806 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 194 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-15 09:57:15,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 197 Invalid, 562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 515 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-15 09:57:15,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2023-02-15 09:57:15,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 91. [2023-02-15 09:57:15,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 90 states have (on average 1.211111111111111) internal successors, (109), 90 states have internal predecessors, (109), 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) [2023-02-15 09:57:15,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 109 transitions. [2023-02-15 09:57:15,819 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 109 transitions. Word has length 32 [2023-02-15 09:57:15,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 09:57:15,820 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 109 transitions. [2023-02-15 09:57:15,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.6) internal successors, (78), 30 states have internal predecessors, (78), 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) [2023-02-15 09:57:15,820 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 109 transitions. [2023-02-15 09:57:15,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-02-15 09:57:15,820 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 09:57:15,821 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 09:57:15,827 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-15 09:57:16,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 09:57:16,026 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 09:57:16,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 09:57:16,026 INFO L85 PathProgramCache]: Analyzing trace with hash -35267436, now seen corresponding path program 1 times [2023-02-15 09:57:16,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 09:57:16,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732415576] [2023-02-15 09:57:16,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 09:57:16,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 09:57:16,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:57:16,091 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-02-15 09:57:16,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 09:57:16,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732415576] [2023-02-15 09:57:16,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732415576] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 09:57:16,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355885334] [2023-02-15 09:57:16,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 09:57:16,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 09:57:16,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 09:57:16,093 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 09:57:16,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-15 09:57:16,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:57:16,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 18 conjunts are in the unsatisfiable core [2023-02-15 09:57:16,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 09:57:16,176 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 [2023-02-15 09:57:16,195 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 [2023-02-15 09:57:16,206 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 [2023-02-15 09:57:16,210 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 15 treesize of output 7 [2023-02-15 09:57:16,212 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-02-15 09:57:16,212 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 09:57:18,245 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_290 (Array Int Int))) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_290) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))) is different from false [2023-02-15 09:57:18,255 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 09:57:18,255 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 18 treesize of output 19 [2023-02-15 09:57:18,257 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 14 [2023-02-15 09:57:18,269 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 4 not checked. [2023-02-15 09:57:18,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355885334] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 09:57:18,269 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 09:57:18,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 9 [2023-02-15 09:57:18,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115523790] [2023-02-15 09:57:18,270 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 09:57:18,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-15 09:57:18,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 09:57:18,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-15 09:57:18,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=38, Unknown=3, NotChecked=12, Total=72 [2023-02-15 09:57:18,270 INFO L87 Difference]: Start difference. First operand 91 states and 109 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 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) [2023-02-15 09:57:18,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 09:57:18,348 INFO L93 Difference]: Finished difference Result 127 states and 147 transitions. [2023-02-15 09:57:18,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-15 09:57:18,349 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 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 32 [2023-02-15 09:57:18,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 09:57:18,349 INFO L225 Difference]: With dead ends: 127 [2023-02-15 09:57:18,349 INFO L226 Difference]: Without dead ends: 81 [2023-02-15 09:57:18,349 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 62 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=43, Invalid=90, Unknown=3, NotChecked=20, Total=156 [2023-02-15 09:57:18,350 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 59 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 38 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 09:57:18,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 56 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 73 Invalid, 0 Unknown, 38 Unchecked, 0.0s Time] [2023-02-15 09:57:18,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2023-02-15 09:57:18,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 62. [2023-02-15 09:57:18,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.180327868852459) internal successors, (72), 61 states have internal predecessors, (72), 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) [2023-02-15 09:57:18,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 72 transitions. [2023-02-15 09:57:18,357 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 72 transitions. Word has length 32 [2023-02-15 09:57:18,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 09:57:18,357 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 72 transitions. [2023-02-15 09:57:18,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 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) [2023-02-15 09:57:18,357 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 72 transitions. [2023-02-15 09:57:18,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-02-15 09:57:18,357 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 09:57:18,357 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 09:57:18,375 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-02-15 09:57:18,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 09:57:18,573 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 09:57:18,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 09:57:18,573 INFO L85 PathProgramCache]: Analyzing trace with hash -767176616, now seen corresponding path program 4 times [2023-02-15 09:57:18,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 09:57:18,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574093902] [2023-02-15 09:57:18,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 09:57:18,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 09:57:18,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:57:18,647 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-02-15 09:57:18,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 09:57:18,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574093902] [2023-02-15 09:57:18,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574093902] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 09:57:18,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332408859] [2023-02-15 09:57:18,648 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-15 09:57:18,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 09:57:18,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 09:57:18,649 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 09:57:18,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-15 09:57:18,697 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-15 09:57:18,698 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 09:57:18,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-15 09:57:18,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 09:57:18,760 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-02-15 09:57:18,760 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 09:57:18,805 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-02-15 09:57:18,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [332408859] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 09:57:18,805 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 09:57:18,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2023-02-15 09:57:18,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388422978] [2023-02-15 09:57:18,805 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 09:57:18,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-15 09:57:18,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 09:57:18,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-15 09:57:18,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2023-02-15 09:57:18,806 INFO L87 Difference]: Start difference. First operand 62 states and 72 transitions. Second operand has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 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) [2023-02-15 09:57:18,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 09:57:18,937 INFO L93 Difference]: Finished difference Result 114 states and 130 transitions. [2023-02-15 09:57:18,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-15 09:57:18,938 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 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 32 [2023-02-15 09:57:18,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 09:57:18,938 INFO L225 Difference]: With dead ends: 114 [2023-02-15 09:57:18,938 INFO L226 Difference]: Without dead ends: 80 [2023-02-15 09:57:18,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 55 SyntacticMatches, 6 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2023-02-15 09:57:18,939 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 112 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 09:57:18,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 76 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 09:57:18,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2023-02-15 09:57:18,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 59. [2023-02-15 09:57:18,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.1551724137931034) internal successors, (67), 58 states have internal predecessors, (67), 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) [2023-02-15 09:57:18,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 67 transitions. [2023-02-15 09:57:18,946 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 67 transitions. Word has length 32 [2023-02-15 09:57:18,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 09:57:18,946 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 67 transitions. [2023-02-15 09:57:18,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 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) [2023-02-15 09:57:18,946 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 67 transitions. [2023-02-15 09:57:18,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-02-15 09:57:18,947 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 09:57:18,947 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 09:57:18,951 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-02-15 09:57:19,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-02-15 09:57:19,152 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 09:57:19,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 09:57:19,152 INFO L85 PathProgramCache]: Analyzing trace with hash -143226682, now seen corresponding path program 2 times [2023-02-15 09:57:19,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 09:57:19,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659729475] [2023-02-15 09:57:19,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 09:57:19,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 09:57:19,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:57:19,838 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-02-15 09:57:19,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 09:57:19,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659729475] [2023-02-15 09:57:19,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659729475] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 09:57:19,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102731566] [2023-02-15 09:57:19,839 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 09:57:19,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 09:57:19,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 09:57:19,857 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 09:57:19,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-02-15 09:57:19,929 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 09:57:19,929 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 09:57:19,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 79 conjunts are in the unsatisfiable core [2023-02-15 09:57:19,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 09:57:19,973 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 11 treesize of output 7 [2023-02-15 09:57:19,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:57:20,000 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 23 treesize of output 22 [2023-02-15 09:57:20,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:57:20,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:57:20,060 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2023-02-15 09:57:20,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:57:20,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:57:20,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:57:20,130 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 47 [2023-02-15 09:57:20,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:57:20,256 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 09:57:20,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:57:20,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:57:20,258 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 51 [2023-02-15 09:57:20,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:57:20,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:57:20,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:57:20,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:57:20,347 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 09:57:20,348 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 49 [2023-02-15 09:57:20,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:57:20,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:57:20,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:57:20,438 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 49 [2023-02-15 09:57:20,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:57:20,638 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 09:57:20,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:57:20,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:57:20,640 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 61 [2023-02-15 09:57:20,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:57:20,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:57:20,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:57:20,780 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 09:57:20,782 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 52 [2023-02-15 09:57:20,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:57:20,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:57:20,906 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 33 [2023-02-15 09:57:21,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:57:21,021 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 39 treesize of output 23 [2023-02-15 09:57:21,045 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 09:57:21,046 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 09:57:22,568 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 09:57:22,570 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 09:57:22,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2102731566] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 09:57:22,571 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 09:57:22,571 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 26, 23] total 58 [2023-02-15 09:57:22,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632353252] [2023-02-15 09:57:22,571 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 09:57:22,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2023-02-15 09:57:22,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 09:57:22,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2023-02-15 09:57:22,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=486, Invalid=2820, Unknown=0, NotChecked=0, Total=3306 [2023-02-15 09:57:22,574 INFO L87 Difference]: Start difference. First operand 59 states and 67 transitions. Second operand has 58 states, 58 states have (on average 1.5862068965517242) internal successors, (92), 58 states have internal predecessors, (92), 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) [2023-02-15 09:57:34,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 09:57:34,333 INFO L93 Difference]: Finished difference Result 203 states and 221 transitions. [2023-02-15 09:57:34,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2023-02-15 09:57:34,334 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 1.5862068965517242) internal successors, (92), 58 states have internal predecessors, (92), 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 35 [2023-02-15 09:57:34,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 09:57:34,335 INFO L225 Difference]: With dead ends: 203 [2023-02-15 09:57:34,335 INFO L226 Difference]: Without dead ends: 201 [2023-02-15 09:57:34,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5661 ImplicationChecksByTransitivity, 12.7s TimeCoverageRelationStatistics Valid=2219, Invalid=15073, Unknown=0, NotChecked=0, Total=17292 [2023-02-15 09:57:34,340 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 659 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 924 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 659 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 1096 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-02-15 09:57:34,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [659 Valid, 237 Invalid, 1096 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 924 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-02-15 09:57:34,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2023-02-15 09:57:34,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 63. [2023-02-15 09:57:34,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.1451612903225807) internal successors, (71), 62 states have internal predecessors, (71), 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) [2023-02-15 09:57:34,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 71 transitions. [2023-02-15 09:57:34,362 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 71 transitions. Word has length 35 [2023-02-15 09:57:34,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 09:57:34,362 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 71 transitions. [2023-02-15 09:57:34,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 1.5862068965517242) internal successors, (92), 58 states have internal predecessors, (92), 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) [2023-02-15 09:57:34,363 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 71 transitions. [2023-02-15 09:57:34,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-02-15 09:57:34,364 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 09:57:34,365 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 09:57:34,369 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-02-15 09:57:34,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 09:57:34,570 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 09:57:34,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 09:57:34,570 INFO L85 PathProgramCache]: Analyzing trace with hash 651947656, now seen corresponding path program 5 times [2023-02-15 09:57:34,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 09:57:34,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295723880] [2023-02-15 09:57:34,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 09:57:34,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 09:57:34,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:57:36,121 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 18 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-02-15 09:57:36,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 09:57:36,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295723880] [2023-02-15 09:57:36,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295723880] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 09:57:36,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1985680784] [2023-02-15 09:57:36,122 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-15 09:57:36,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 09:57:36,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 09:57:36,123 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 09:57:36,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-02-15 09:57:36,219 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-02-15 09:57:36,220 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 09:57:36,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 55 conjunts are in the unsatisfiable core [2023-02-15 09:57:36,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 09:57:36,228 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 11 treesize of output 7 [2023-02-15 09:57:36,231 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 [2023-02-15 09:57:36,237 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 23 treesize of output 22 [2023-02-15 09:57:36,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:57:36,259 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2023-02-15 09:57:36,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:57:36,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:57:36,291 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 42 [2023-02-15 09:57:36,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:57:36,456 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 09:57:36,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:57:36,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:57:36,458 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 55 [2023-02-15 09:57:36,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:57:36,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:57:36,551 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 09:57:36,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:57:36,553 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 55 [2023-02-15 09:57:36,647 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 45 [2023-02-15 09:57:36,748 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 41 treesize of output 35 [2023-02-15 09:57:36,750 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 19 [2023-02-15 09:57:36,780 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 15 treesize of output 7 [2023-02-15 09:57:36,824 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 20 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-15 09:57:36,824 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 09:57:36,868 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_472 (Array Int Int))) (= c_~N~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_472) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))) is different from false [2023-02-15 09:57:37,048 WARN L837 $PredicateComparison]: unable to prove that (or (forall ((v_ArrVal_472 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|))) (store .cse0 |c_ULTIMATE.start_main_~#sum~0#1.offset| (let ((.cse3 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (let ((.cse1 (select .cse0 |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse2 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ .cse3 |c_ULTIMATE.start_main_~a~0#1.offset| 4)))) (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse0 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 .cse2))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ .cse3 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) .cse1 .cse2)))))) |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_472) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) c_~N~0)) (not (< (+ 2 |c_ULTIMATE.start_main_~i~0#1|) c_~N~0))) is different from false [2023-02-15 09:57:38,298 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 10 refuted. 2 times theorem prover too weak. 2 trivial. 8 not checked. [2023-02-15 09:57:38,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1985680784] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 09:57:38,298 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 09:57:38,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 18] total 46 [2023-02-15 09:57:38,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836476063] [2023-02-15 09:57:38,298 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 09:57:38,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-02-15 09:57:38,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 09:57:38,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-02-15 09:57:38,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=250, Invalid=1640, Unknown=10, NotChecked=170, Total=2070 [2023-02-15 09:57:38,301 INFO L87 Difference]: Start difference. First operand 63 states and 71 transitions. Second operand has 46 states, 46 states have (on average 1.5217391304347827) internal successors, (70), 46 states have internal predecessors, (70), 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) [2023-02-15 09:57:46,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 09:57:46,232 INFO L93 Difference]: Finished difference Result 195 states and 221 transitions. [2023-02-15 09:57:46,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-02-15 09:57:46,232 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 1.5217391304347827) internal successors, (70), 46 states have internal predecessors, (70), 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 35 [2023-02-15 09:57:46,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 09:57:46,233 INFO L225 Difference]: With dead ends: 195 [2023-02-15 09:57:46,233 INFO L226 Difference]: Without dead ends: 152 [2023-02-15 09:57:46,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 44 SyntacticMatches, 4 SemanticMatches, 70 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1143 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=637, Invalid=4186, Unknown=15, NotChecked=274, Total=5112 [2023-02-15 09:57:46,234 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 83 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 822 mSolverCounterSat, 103 mSolverCounterUnsat, 54 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 1134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 822 IncrementalHoareTripleChecker+Invalid, 54 IncrementalHoareTripleChecker+Unknown, 155 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-02-15 09:57:46,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 329 Invalid, 1134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 822 Invalid, 54 Unknown, 155 Unchecked, 2.1s Time] [2023-02-15 09:57:46,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2023-02-15 09:57:46,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 77. [2023-02-15 09:57:46,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.144736842105263) internal successors, (87), 76 states have internal predecessors, (87), 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) [2023-02-15 09:57:46,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 87 transitions. [2023-02-15 09:57:46,268 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 87 transitions. Word has length 35 [2023-02-15 09:57:46,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 09:57:46,268 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 87 transitions. [2023-02-15 09:57:46,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 1.5217391304347827) internal successors, (70), 46 states have internal predecessors, (70), 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) [2023-02-15 09:57:46,268 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 87 transitions. [2023-02-15 09:57:46,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-02-15 09:57:46,268 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 09:57:46,269 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 09:57:46,273 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-02-15 09:57:46,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-02-15 09:57:46,473 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 09:57:46,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 09:57:46,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1015472054, now seen corresponding path program 6 times [2023-02-15 09:57:46,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 09:57:46,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335648373] [2023-02-15 09:57:46,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 09:57:46,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 09:57:46,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:57:46,575 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 4 proven. 21 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-02-15 09:57:46,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 09:57:46,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335648373] [2023-02-15 09:57:46,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335648373] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 09:57:46,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697463158] [2023-02-15 09:57:46,576 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-15 09:57:46,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 09:57:46,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 09:57:46,589 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 09:57:46,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-02-15 09:57:46,678 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2023-02-15 09:57:46,678 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 09:57:46,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-15 09:57:46,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 09:57:46,745 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-02-15 09:57:46,745 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 09:57:46,805 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-02-15 09:57:46,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [697463158] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 09:57:46,806 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 09:57:46,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2023-02-15 09:57:46,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778971664] [2023-02-15 09:57:46,806 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 09:57:46,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-02-15 09:57:46,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 09:57:46,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-02-15 09:57:46,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2023-02-15 09:57:46,807 INFO L87 Difference]: Start difference. First operand 77 states and 87 transitions. Second operand has 17 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 17 states have internal predecessors, (45), 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) [2023-02-15 09:57:47,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 09:57:47,100 INFO L93 Difference]: Finished difference Result 185 states and 204 transitions. [2023-02-15 09:57:47,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-02-15 09:57:47,101 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 17 states have internal predecessors, (45), 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 37 [2023-02-15 09:57:47,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 09:57:47,102 INFO L225 Difference]: With dead ends: 185 [2023-02-15 09:57:47,102 INFO L226 Difference]: Without dead ends: 142 [2023-02-15 09:57:47,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 60 SyntacticMatches, 8 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2023-02-15 09:57:47,105 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 165 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 09:57:47,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 183 Invalid, 486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 434 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 09:57:47,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2023-02-15 09:57:47,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 89. [2023-02-15 09:57:47,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 1.125) internal successors, (99), 88 states have internal predecessors, (99), 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) [2023-02-15 09:57:47,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 99 transitions. [2023-02-15 09:57:47,122 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 99 transitions. Word has length 37 [2023-02-15 09:57:47,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 09:57:47,122 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 99 transitions. [2023-02-15 09:57:47,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 17 states have internal predecessors, (45), 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) [2023-02-15 09:57:47,122 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 99 transitions. [2023-02-15 09:57:47,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-02-15 09:57:47,123 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 09:57:47,123 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 09:57:47,137 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-02-15 09:57:47,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-02-15 09:57:47,327 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 09:57:47,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 09:57:47,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1487374188, now seen corresponding path program 7 times [2023-02-15 09:57:47,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 09:57:47,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761918072] [2023-02-15 09:57:47,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 09:57:47,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 09:57:47,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:57:49,071 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 7 proven. 32 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-02-15 09:57:49,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 09:57:49,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761918072] [2023-02-15 09:57:49,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761918072] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 09:57:49,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [283339968] [2023-02-15 09:57:49,071 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-15 09:57:49,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 09:57:49,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 09:57:49,073 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 09:57:49,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-02-15 09:57:49,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:57:49,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 80 conjunts are in the unsatisfiable core [2023-02-15 09:57:49,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 09:57:49,168 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 [2023-02-15 09:57:49,171 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 [2023-02-15 09:57:49,178 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 23 treesize of output 22 [2023-02-15 09:57:49,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:57:49,207 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2023-02-15 09:57:49,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:57:49,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:57:49,258 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2023-02-15 09:57:49,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:57:49,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:57:49,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:57:49,292 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 52 [2023-02-15 09:57:49,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:57:49,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:57:49,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:57:49,426 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 57 [2023-02-15 09:57:49,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:57:49,515 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 09:57:49,516 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 57 [2023-02-15 09:57:49,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:57:49,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:57:49,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:57:49,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:57:49,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:57:49,613 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 09:57:49,616 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 61 [2023-02-15 09:57:49,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:57:49,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:57:49,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:57:49,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:57:49,720 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 09:57:49,721 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 61 [2023-02-15 09:57:49,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:57:49,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:57:49,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:57:49,897 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 09:57:49,898 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 67 [2023-02-15 09:57:49,901 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 7 proven. 32 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-02-15 09:57:49,901 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 09:57:52,152 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 7 proven. 32 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-02-15 09:57:52,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [283339968] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 09:57:52,153 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 09:57:52,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 21] total 51 [2023-02-15 09:57:52,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303267273] [2023-02-15 09:57:52,153 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 09:57:52,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2023-02-15 09:57:52,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 09:57:52,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2023-02-15 09:57:52,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=2343, Unknown=0, NotChecked=0, Total=2550 [2023-02-15 09:57:52,154 INFO L87 Difference]: Start difference. First operand 89 states and 99 transitions. Second operand has 51 states, 51 states have (on average 1.411764705882353) internal successors, (72), 51 states have internal predecessors, (72), 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) [2023-02-15 09:57:54,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 09:57:54,656 INFO L93 Difference]: Finished difference Result 170 states and 187 transitions. [2023-02-15 09:57:54,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-02-15 09:57:54,656 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 1.411764705882353) internal successors, (72), 51 states have internal predecessors, (72), 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 42 [2023-02-15 09:57:54,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 09:57:54,657 INFO L225 Difference]: With dead ends: 170 [2023-02-15 09:57:54,657 INFO L226 Difference]: Without dead ends: 152 [2023-02-15 09:57:54,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 54 SyntacticMatches, 6 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 990 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=306, Invalid=3476, Unknown=0, NotChecked=0, Total=3782 [2023-02-15 09:57:54,658 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 51 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 1136 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 1161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-02-15 09:57:54,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 291 Invalid, 1161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1136 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-02-15 09:57:54,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2023-02-15 09:57:54,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 104. [2023-02-15 09:57:54,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 1.1262135922330097) internal successors, (116), 103 states have internal predecessors, (116), 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) [2023-02-15 09:57:54,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 116 transitions. [2023-02-15 09:57:54,711 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 116 transitions. Word has length 42 [2023-02-15 09:57:54,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 09:57:54,712 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 116 transitions. [2023-02-15 09:57:54,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 1.411764705882353) internal successors, (72), 51 states have internal predecessors, (72), 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) [2023-02-15 09:57:54,712 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 116 transitions. [2023-02-15 09:57:54,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-02-15 09:57:54,712 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 09:57:54,713 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 09:57:54,719 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-02-15 09:57:54,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-02-15 09:57:54,913 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 09:57:54,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 09:57:54,913 INFO L85 PathProgramCache]: Analyzing trace with hash 2085827890, now seen corresponding path program 2 times [2023-02-15 09:57:54,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 09:57:54,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999917413] [2023-02-15 09:57:54,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 09:57:54,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 09:57:54,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:57:55,786 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 09:57:55,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 09:57:55,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999917413] [2023-02-15 09:57:55,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999917413] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 09:57:55,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2045504242] [2023-02-15 09:57:55,786 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 09:57:55,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 09:57:55,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 09:57:55,801 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 09:57:55,830 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-02-15 09:57:55,897 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 09:57:55,897 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 09:57:55,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 52 conjunts are in the unsatisfiable core [2023-02-15 09:57:55,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 09:57:56,005 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 13 treesize of output 9 [2023-02-15 09:57:56,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:57:56,038 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 16 treesize of output 18 [2023-02-15 09:57:56,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:57:56,048 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 16 treesize of output 18 [2023-02-15 09:57:56,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:57:56,060 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 16 treesize of output 18 [2023-02-15 09:57:56,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:57:56,104 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 25 treesize of output 24 [2023-02-15 09:57:56,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:57:56,149 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 25 treesize of output 24 [2023-02-15 09:57:56,170 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 49 treesize of output 21 [2023-02-15 09:57:56,237 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 32 treesize of output 20 [2023-02-15 09:57:56,249 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-15 09:57:56,249 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 09:57:56,502 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_669 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_669) |c_ULTIMATE.start_main_~a~0#1.base|) (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) 1)) is different from false [2023-02-15 09:57:56,516 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 09:57:56,516 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 24 treesize of output 25 [2023-02-15 09:57:56,521 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 09:57:56,521 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 34 [2023-02-15 09:57:56,523 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 7 treesize of output 3 [2023-02-15 09:57:56,608 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 4 trivial. 10 not checked. [2023-02-15 09:57:56,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2045504242] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 09:57:56,609 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 09:57:56,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16, 17] total 38 [2023-02-15 09:57:56,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309205319] [2023-02-15 09:57:56,609 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 09:57:56,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-02-15 09:57:56,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 09:57:56,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-02-15 09:57:56,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=1194, Unknown=1, NotChecked=70, Total=1406 [2023-02-15 09:57:56,610 INFO L87 Difference]: Start difference. First operand 104 states and 116 transitions. Second operand has 38 states, 38 states have (on average 2.789473684210526) internal successors, (106), 38 states have internal predecessors, (106), 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) [2023-02-15 09:57:57,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 09:57:57,774 INFO L93 Difference]: Finished difference Result 163 states and 177 transitions. [2023-02-15 09:57:57,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-02-15 09:57:57,775 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.789473684210526) internal successors, (106), 38 states have internal predecessors, (106), 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 43 [2023-02-15 09:57:57,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 09:57:57,775 INFO L225 Difference]: With dead ends: 163 [2023-02-15 09:57:57,775 INFO L226 Difference]: Without dead ends: 161 [2023-02-15 09:57:57,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 72 SyntacticMatches, 4 SemanticMatches, 64 ConstructedPredicates, 1 IntricatePredicates, 4 DeprecatedPredicates, 1139 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=493, Invalid=3670, Unknown=1, NotChecked=126, Total=4290 [2023-02-15 09:57:57,778 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 244 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 821 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 72 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-15 09:57:57,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 280 Invalid, 933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 821 Invalid, 0 Unknown, 72 Unchecked, 0.4s Time] [2023-02-15 09:57:57,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2023-02-15 09:57:57,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 120. [2023-02-15 09:57:57,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 1.134453781512605) internal successors, (135), 119 states have internal predecessors, (135), 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) [2023-02-15 09:57:57,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 135 transitions. [2023-02-15 09:57:57,804 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 135 transitions. Word has length 43 [2023-02-15 09:57:57,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 09:57:57,805 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 135 transitions. [2023-02-15 09:57:57,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.789473684210526) internal successors, (106), 38 states have internal predecessors, (106), 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) [2023-02-15 09:57:57,805 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 135 transitions. [2023-02-15 09:57:57,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-02-15 09:57:57,805 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 09:57:57,805 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 09:57:57,824 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-02-15 09:57:58,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-02-15 09:57:58,025 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 09:57:58,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 09:57:58,026 INFO L85 PathProgramCache]: Analyzing trace with hash -994502120, now seen corresponding path program 3 times [2023-02-15 09:57:58,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 09:57:58,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090883441] [2023-02-15 09:57:58,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 09:57:58,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 09:57:58,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:57:58,155 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 38 proven. 22 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-02-15 09:57:58,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 09:57:58,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090883441] [2023-02-15 09:57:58,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090883441] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 09:57:58,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1525510647] [2023-02-15 09:57:58,156 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-15 09:57:58,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 09:57:58,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 09:57:58,157 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 09:57:58,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-02-15 09:57:58,293 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2023-02-15 09:57:58,293 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 09:57:58,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 12 conjunts are in the unsatisfiable core [2023-02-15 09:57:58,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 09:57:58,409 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 51 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-02-15 09:57:58,409 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 09:57:58,508 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 51 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-02-15 09:57:58,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1525510647] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 09:57:58,508 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 09:57:58,508 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 26 [2023-02-15 09:57:58,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075299362] [2023-02-15 09:57:58,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 09:57:58,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-02-15 09:57:58,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 09:57:58,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-02-15 09:57:58,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=478, Unknown=0, NotChecked=0, Total=650 [2023-02-15 09:57:58,509 INFO L87 Difference]: Start difference. First operand 120 states and 135 transitions. Second operand has 26 states, 26 states have (on average 3.3076923076923075) internal successors, (86), 26 states have internal predecessors, (86), 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) [2023-02-15 09:57:58,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 09:57:58,863 INFO L93 Difference]: Finished difference Result 394 states and 434 transitions. [2023-02-15 09:57:58,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-02-15 09:57:58,864 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.3076923076923075) internal successors, (86), 26 states have internal predecessors, (86), 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 44 [2023-02-15 09:57:58,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 09:57:58,865 INFO L225 Difference]: With dead ends: 394 [2023-02-15 09:57:58,865 INFO L226 Difference]: Without dead ends: 285 [2023-02-15 09:57:58,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 72 SyntacticMatches, 5 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 551 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=386, Invalid=1254, Unknown=0, NotChecked=0, Total=1640 [2023-02-15 09:57:58,868 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 560 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 560 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 09:57:58,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [560 Valid, 149 Invalid, 549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 09:57:58,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2023-02-15 09:57:58,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 213. [2023-02-15 09:57:58,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 212 states have (on average 1.1273584905660377) internal successors, (239), 212 states have internal predecessors, (239), 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) [2023-02-15 09:57:58,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 239 transitions. [2023-02-15 09:57:58,922 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 239 transitions. Word has length 44 [2023-02-15 09:57:58,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 09:57:58,922 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 239 transitions. [2023-02-15 09:57:58,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.3076923076923075) internal successors, (86), 26 states have internal predecessors, (86), 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) [2023-02-15 09:57:58,923 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 239 transitions. [2023-02-15 09:57:58,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-02-15 09:57:58,923 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 09:57:58,923 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 09:57:58,929 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-02-15 09:57:59,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 09:57:59,129 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 09:57:59,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 09:57:59,130 INFO L85 PathProgramCache]: Analyzing trace with hash -497669998, now seen corresponding path program 8 times [2023-02-15 09:57:59,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 09:57:59,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382502125] [2023-02-15 09:57:59,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 09:57:59,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 09:57:59,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:57:59,241 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 9 proven. 32 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-02-15 09:57:59,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 09:57:59,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382502125] [2023-02-15 09:57:59,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382502125] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 09:57:59,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [489203807] [2023-02-15 09:57:59,242 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 09:57:59,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 09:57:59,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 09:57:59,243 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 09:57:59,245 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-02-15 09:57:59,317 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 09:57:59,317 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 09:57:59,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 12 conjunts are in the unsatisfiable core [2023-02-15 09:57:59,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 09:57:59,372 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-02-15 09:57:59,372 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 09:57:59,419 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-02-15 09:57:59,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [489203807] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 09:57:59,420 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 09:57:59,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2023-02-15 09:57:59,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058373931] [2023-02-15 09:57:59,420 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 09:57:59,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-02-15 09:57:59,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 09:57:59,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-02-15 09:57:59,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2023-02-15 09:57:59,421 INFO L87 Difference]: Start difference. First operand 213 states and 239 transitions. Second operand has 20 states, 20 states have (on average 2.55) internal successors, (51), 20 states have internal predecessors, (51), 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) [2023-02-15 09:57:59,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 09:57:59,775 INFO L93 Difference]: Finished difference Result 287 states and 314 transitions. [2023-02-15 09:57:59,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-02-15 09:57:59,775 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.55) internal successors, (51), 20 states have internal predecessors, (51), 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 44 [2023-02-15 09:57:59,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 09:57:59,778 INFO L225 Difference]: With dead ends: 287 [2023-02-15 09:57:59,778 INFO L226 Difference]: Without dead ends: 234 [2023-02-15 09:57:59,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 71 SyntacticMatches, 10 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=206, Invalid=664, Unknown=0, NotChecked=0, Total=870 [2023-02-15 09:57:59,779 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 201 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 09:57:59,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 172 Invalid, 596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 543 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 09:57:59,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2023-02-15 09:57:59,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 198. [2023-02-15 09:57:59,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 197 states have (on average 1.101522842639594) internal successors, (217), 197 states have internal predecessors, (217), 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) [2023-02-15 09:57:59,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 217 transitions. [2023-02-15 09:57:59,823 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 217 transitions. Word has length 44 [2023-02-15 09:57:59,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 09:57:59,823 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 217 transitions. [2023-02-15 09:57:59,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.55) internal successors, (51), 20 states have internal predecessors, (51), 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) [2023-02-15 09:57:59,823 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 217 transitions. [2023-02-15 09:57:59,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-02-15 09:57:59,824 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 09:57:59,824 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 09:57:59,829 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-02-15 09:58:00,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-02-15 09:58:00,027 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 09:58:00,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 09:58:00,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1027028208, now seen corresponding path program 9 times [2023-02-15 09:58:00,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 09:58:00,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737649713] [2023-02-15 09:58:00,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 09:58:00,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 09:58:00,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 09:58:02,051 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 9 proven. 50 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-02-15 09:58:02,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 09:58:02,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737649713] [2023-02-15 09:58:02,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737649713] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 09:58:02,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1813620605] [2023-02-15 09:58:02,051 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-15 09:58:02,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 09:58:02,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 09:58:02,052 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 09:58:02,054 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-02-15 09:58:02,218 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-02-15 09:58:02,218 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 09:58:02,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 90 conjunts are in the unsatisfiable core [2023-02-15 09:58:02,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 09:58:02,238 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 11 treesize of output 7 [2023-02-15 09:58:02,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:58:02,276 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 23 treesize of output 22 [2023-02-15 09:58:02,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:58:02,358 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2023-02-15 09:58:02,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:58:02,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:58:02,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:58:02,446 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2023-02-15 09:58:02,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:58:02,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:58:02,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:58:02,517 INFO L321 Elim1Store]: treesize reduction 64, result has 28.9 percent of original size [2023-02-15 09:58:02,517 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 56 [2023-02-15 09:58:02,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:58:02,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:58:02,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:58:02,641 INFO L321 Elim1Store]: treesize reduction 94, result has 21.7 percent of original size [2023-02-15 09:58:02,641 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 60 treesize of output 71 [2023-02-15 09:58:02,927 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 09:58:02,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:58:02,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:58:02,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:58:02,937 INFO L321 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2023-02-15 09:58:02,937 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 5 disjoint index pairs (out of 21 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 81 treesize of output 80 [2023-02-15 09:58:03,092 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 09:58:03,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:58:03,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:58:03,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:58:03,101 INFO L321 Elim1Store]: treesize reduction 58, result has 1.7 percent of original size [2023-02-15 09:58:03,101 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 6 disjoint index pairs (out of 21 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 95 treesize of output 83 [2023-02-15 09:58:03,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:58:03,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:58:03,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:58:03,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:58:03,263 INFO L321 Elim1Store]: treesize reduction 50, result has 2.0 percent of original size [2023-02-15 09:58:03,263 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 79 treesize of output 76 [2023-02-15 09:58:03,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:58:03,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:58:03,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:58:03,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:58:03,367 INFO L321 Elim1Store]: treesize reduction 106, result has 0.9 percent of original size [2023-02-15 09:58:03,367 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 6 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 81 treesize of output 87 [2023-02-15 09:58:03,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:58:03,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:58:03,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:58:03,563 INFO L321 Elim1Store]: treesize reduction 148, result has 0.7 percent of original size [2023-02-15 09:58:03,563 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 8 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 14 case distinctions, treesize of input 82 treesize of output 91 [2023-02-15 09:58:03,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:58:03,992 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 72 treesize of output 60 [2023-02-15 09:58:03,995 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 09:58:03,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 09:58:04,000 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 09:58:04,005 INFO L321 Elim1Store]: treesize reduction 50, result has 2.0 percent of original size [2023-02-15 09:58:04,005 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 5 disjoint index pairs (out of 21 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 52 treesize of output 26 [2023-02-15 09:58:04,106 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 15 treesize of output 7 [2023-02-15 09:58:04,477 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 5 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 09:58:04,477 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 09:59:08,473 WARN L233 SmtUtils]: Spent 6.44s on a formula simplification that was a NOOP. DAG size: 111 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-15 09:59:10,565 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse8 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse9 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)) (.cse11 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~a~0#1.offset| 4) 1))) (and (forall ((v_subst_2 Int)) (or (< v_subst_2 3) (forall ((v_ArrVal_900 (Array Int Int)) (|v_ULTIMATE.start_main_~i~0#1_281| Int)) (or (< 3 |v_ULTIMATE.start_main_~i~0#1_281|) (< (+ v_subst_2 1) (select (select (store (let ((.cse10 (let ((.cse12 (* 4 v_subst_2))) (store (store .cse11 (+ .cse12 |c_ULTIMATE.start_main_~a~0#1.offset|) 1) (+ .cse12 |c_ULTIMATE.start_main_~a~0#1.offset| 4) 1)))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse10))) (store .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base| (let ((.cse1 (select .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (store .cse1 |c_ULTIMATE.start_main_~#sum~0#1.offset| (let ((.cse2 (select .cse1 |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse3 (select .cse10 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse5 (select (select (store .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse1 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse2 .cse3))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse9))) (let ((.cse6 (select (select (store .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse1 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse2 .cse3 .cse5))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse8)) (.cse7 (* |v_ULTIMATE.start_main_~i~0#1_281| 4))) (let ((.cse4 (select (select (store .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse1 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse2 .cse3 .cse5 .cse6))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ .cse7 |c_ULTIMATE.start_main_~a~0#1.offset|)))) (+ .cse2 (select (select (store .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse1 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse2 .cse3 .cse4 .cse5 .cse6))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ .cse7 |c_ULTIMATE.start_main_~a~0#1.offset| 4)) .cse3 .cse4 .cse5 .cse6)))))))))) |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_900) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (< |v_ULTIMATE.start_main_~i~0#1_281| v_subst_2))))) (forall ((v_subst_1 Int)) (or (< v_subst_1 3) (forall ((v_ArrVal_900 (Array Int Int)) (|v_ULTIMATE.start_main_~i~0#1_281| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_281| v_subst_1) (< 3 |v_ULTIMATE.start_main_~i~0#1_281|) (< (select (select (store (let ((.cse21 (let ((.cse22 (* 4 v_subst_1))) (store (store .cse11 (+ .cse22 |c_ULTIMATE.start_main_~a~0#1.offset|) 1) (+ .cse22 |c_ULTIMATE.start_main_~a~0#1.offset| 4) 1)))) (let ((.cse13 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse21))) (store .cse13 |c_ULTIMATE.start_main_~#sum~0#1.base| (let ((.cse14 (select .cse13 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (store .cse14 |c_ULTIMATE.start_main_~#sum~0#1.offset| (let ((.cse15 (select .cse21 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse17 (select .cse14 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse18 (select (select (store .cse13 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse14 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse15 .cse17))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse9))) (let ((.cse16 (select (select (store .cse13 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse14 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse15 .cse17 .cse18))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse8)) (.cse20 (* |v_ULTIMATE.start_main_~i~0#1_281| 4))) (let ((.cse19 (select (select (store .cse13 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse14 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse15 .cse16 .cse17 .cse18))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ .cse20 |c_ULTIMATE.start_main_~a~0#1.offset|)))) (+ .cse15 .cse16 .cse17 .cse18 .cse19 (select (select (store .cse13 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse14 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse15 .cse16 .cse17 .cse18 .cse19))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ .cse20 |c_ULTIMATE.start_main_~a~0#1.offset| 4)))))))))))) |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_900) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) 6))))))) is different from false [2023-02-15 10:00:18,136 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 78 refuted. 3 times theorem prover too weak. 0 trivial. 4 not checked. [2023-02-15 10:00:18,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1813620605] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 10:00:18,136 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 10:00:18,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 34, 34] total 90 [2023-02-15 10:00:18,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464697879] [2023-02-15 10:00:18,136 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 10:00:18,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2023-02-15 10:00:18,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:00:18,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2023-02-15 10:00:18,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=839, Invalid=6974, Unknown=23, NotChecked=174, Total=8010 [2023-02-15 10:00:18,139 INFO L87 Difference]: Start difference. First operand 198 states and 217 transitions. Second operand has 90 states, 90 states have (on average 1.3444444444444446) internal successors, (121), 90 states have internal predecessors, (121), 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) [2023-02-15 10:01:10,051 WARN L233 SmtUtils]: Spent 51.06s on a formula simplification. DAG size of input: 203 DAG size of output: 159 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-15 10:01:15,703 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-02-15 10:01:24,928 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-02-15 10:01:27,038 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1]