./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-patterns/array2_pattern.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e8d55036 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-patterns/array2_pattern.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 1a25becec148beba97bef86c2a84619bb26dfafe7c127e8d70246837f0d2d470 --- Real Ultimate output --- This is Ultimate 0.2.2-?-e8d5503-m [2023-02-15 18:46:29,019 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 18:46:29,021 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 18:46:29,051 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 18:46:29,051 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 18:46:29,053 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 18:46:29,055 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 18:46:29,058 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 18:46:29,060 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 18:46:29,063 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 18:46:29,064 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 18:46:29,065 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 18:46:29,066 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 18:46:29,067 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 18:46:29,068 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 18:46:29,069 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 18:46:29,070 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 18:46:29,071 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 18:46:29,072 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 18:46:29,076 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 18:46:29,076 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 18:46:29,077 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 18:46:29,078 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 18:46:29,078 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 18:46:29,084 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 18:46:29,084 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 18:46:29,085 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 18:46:29,086 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 18:46:29,086 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 18:46:29,087 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 18:46:29,087 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 18:46:29,088 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 18:46:29,089 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 18:46:29,090 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 18:46:29,090 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 18:46:29,091 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 18:46:29,091 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 18:46:29,091 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 18:46:29,091 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 18:46:29,092 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 18:46:29,093 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 18:46:29,094 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-15 18:46:29,115 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 18:46:29,116 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 18:46:29,116 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 18:46:29,116 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 18:46:29,117 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 18:46:29,117 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 18:46:29,118 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 18:46:29,118 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 18:46:29,118 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 18:46:29,118 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 18:46:29,119 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-15 18:46:29,119 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 18:46:29,119 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-15 18:46:29,119 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 18:46:29,119 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-15 18:46:29,120 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 18:46:29,120 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-15 18:46:29,120 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-15 18:46:29,120 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-15 18:46:29,120 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 18:46:29,120 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-15 18:46:29,121 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 18:46:29,121 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 18:46:29,121 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 18:46:29,121 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 18:46:29,121 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 18:46:29,121 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 18:46:29,122 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-15 18:46:29,122 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 18:46:29,122 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-15 18:46:29,122 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 18:46:29,123 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-15 18:46:29,123 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 18:46:29,123 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 18:46:29,123 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 18:46:29,123 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1a25becec148beba97bef86c2a84619bb26dfafe7c127e8d70246837f0d2d470 [2023-02-15 18:46:29,309 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 18:46:29,330 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 18:46:29,331 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 18:46:29,332 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 18:46:29,332 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 18:46:29,333 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-patterns/array2_pattern.c [2023-02-15 18:46:30,295 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 18:46:30,506 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 18:46:30,506 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array2_pattern.c [2023-02-15 18:46:30,510 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a77484fbf/576738f2953c46478ad0a70ac039c1d4/FLAGd0d60b5f8 [2023-02-15 18:46:30,520 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a77484fbf/576738f2953c46478ad0a70ac039c1d4 [2023-02-15 18:46:30,522 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 18:46:30,523 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 18:46:30,524 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 18:46:30,524 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 18:46:30,533 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 18:46:30,533 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 06:46:30" (1/1) ... [2023-02-15 18:46:30,534 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b851b24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 06:46:30, skipping insertion in model container [2023-02-15 18:46:30,534 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 06:46:30" (1/1) ... [2023-02-15 18:46:30,538 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 18:46:30,549 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 18:46:30,627 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-patterns/array2_pattern.c[1322,1335] [2023-02-15 18:46:30,638 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 18:46:30,643 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 18:46:30,650 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-patterns/array2_pattern.c[1322,1335] [2023-02-15 18:46:30,655 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 18:46:30,663 INFO L208 MainTranslator]: Completed translation [2023-02-15 18:46:30,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 06:46:30 WrapperNode [2023-02-15 18:46:30,663 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 18:46:30,664 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 18:46:30,664 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 18:46:30,664 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 18:46:30,668 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 06:46:30" (1/1) ... [2023-02-15 18:46:30,672 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 06:46:30" (1/1) ... [2023-02-15 18:46:30,683 INFO L138 Inliner]: procedures = 16, calls = 24, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 80 [2023-02-15 18:46:30,684 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 18:46:30,684 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 18:46:30,684 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 18:46:30,684 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 18:46:30,689 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 06:46:30" (1/1) ... [2023-02-15 18:46:30,689 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 06:46:30" (1/1) ... [2023-02-15 18:46:30,690 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 06:46:30" (1/1) ... [2023-02-15 18:46:30,691 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 06:46:30" (1/1) ... [2023-02-15 18:46:30,694 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 06:46:30" (1/1) ... [2023-02-15 18:46:30,696 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 06:46:30" (1/1) ... [2023-02-15 18:46:30,696 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 06:46:30" (1/1) ... [2023-02-15 18:46:30,697 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 06:46:30" (1/1) ... [2023-02-15 18:46:30,698 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 18:46:30,699 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 18:46:30,699 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 18:46:30,699 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 18:46:30,699 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 06:46:30" (1/1) ... [2023-02-15 18:46:30,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 18:46:30,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 18:46:30,718 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 18:46:30,734 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 18:46:30,742 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-15 18:46:30,742 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-02-15 18:46:30,742 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-02-15 18:46:30,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-15 18:46:30,743 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-15 18:46:30,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-15 18:46:30,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 18:46:30,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 18:46:30,743 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-15 18:46:30,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-15 18:46:30,790 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 18:46:30,791 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 18:46:31,004 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 18:46:31,010 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 18:46:31,010 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2023-02-15 18:46:31,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 06:46:31 BoogieIcfgContainer [2023-02-15 18:46:31,017 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 18:46:31,018 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-15 18:46:31,019 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-15 18:46:31,021 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-15 18:46:31,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 06:46:30" (1/3) ... [2023-02-15 18:46:31,021 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24b9dc8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 06:46:31, skipping insertion in model container [2023-02-15 18:46:31,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 06:46:30" (2/3) ... [2023-02-15 18:46:31,022 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24b9dc8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 06:46:31, skipping insertion in model container [2023-02-15 18:46:31,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 06:46:31" (3/3) ... [2023-02-15 18:46:31,025 INFO L112 eAbstractionObserver]: Analyzing ICFG array2_pattern.c [2023-02-15 18:46:31,038 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-15 18:46:31,038 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-15 18:46:31,099 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-15 18:46:31,103 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;@30211873, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-15 18:46:31,103 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-15 18:46:31,105 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-15 18:46:31,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-02-15 18:46:31,110 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 18:46:31,110 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 18:46:31,111 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 18:46:31,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 18:46:31,114 INFO L85 PathProgramCache]: Analyzing trace with hash -800294020, now seen corresponding path program 1 times [2023-02-15 18:46:31,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 18:46:31,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296052979] [2023-02-15 18:46:31,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 18:46:31,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 18:46:31,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:46:31,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-15 18:46:31,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:46:31,214 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 18:46:31,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 18:46:31,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296052979] [2023-02-15 18:46:31,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296052979] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 18:46:31,215 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 18:46:31,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-15 18:46:31,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837340220] [2023-02-15 18:46:31,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 18:46:31,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-15 18:46:31,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 18:46:31,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-15 18:46:31,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-15 18:46:31,248 INFO L87 Difference]: Start difference. First operand has 25 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-15 18:46:31,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 18:46:31,264 INFO L93 Difference]: Finished difference Result 47 states and 66 transitions. [2023-02-15 18:46:31,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-15 18:46:31,265 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2023-02-15 18:46:31,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 18:46:31,269 INFO L225 Difference]: With dead ends: 47 [2023-02-15 18:46:31,269 INFO L226 Difference]: Without dead ends: 21 [2023-02-15 18:46:31,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 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 18:46:31,275 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 18:46:31,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 18:46:31,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-02-15 18:46:31,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2023-02-15 18:46:31,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-15 18:46:31,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2023-02-15 18:46:31,299 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 15 [2023-02-15 18:46:31,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 18:46:31,300 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2023-02-15 18:46:31,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-15 18:46:31,300 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2023-02-15 18:46:31,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-02-15 18:46:31,301 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 18:46:31,302 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 18:46:31,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-15 18:46:31,302 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 18:46:31,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 18:46:31,303 INFO L85 PathProgramCache]: Analyzing trace with hash -952637313, now seen corresponding path program 1 times [2023-02-15 18:46:31,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 18:46:31,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572610061] [2023-02-15 18:46:31,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 18:46:31,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 18:46:31,344 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 18:46:31,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [563853102] [2023-02-15 18:46:31,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 18:46:31,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 18:46:31,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 18:46:31,385 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 18:46:31,386 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 18:46:31,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:46:31,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-15 18:46:31,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 18:46:31,489 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-15 18:46:31,489 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 18:46:31,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 18:46:31,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572610061] [2023-02-15 18:46:31,490 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 18:46:31,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563853102] [2023-02-15 18:46:31,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [563853102] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 18:46:31,490 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 18:46:31,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 18:46:31,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943421528] [2023-02-15 18:46:31,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 18:46:31,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-15 18:46:31,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 18:46:31,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 18:46:31,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-15 18:46:31,493 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-15 18:46:31,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 18:46:31,507 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2023-02-15 18:46:31,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-15 18:46:31,507 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2023-02-15 18:46:31,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 18:46:31,508 INFO L225 Difference]: With dead ends: 26 [2023-02-15 18:46:31,508 INFO L226 Difference]: Without dead ends: 22 [2023-02-15 18:46:31,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-15 18:46:31,509 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 4 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 18:46:31,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 54 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 18:46:31,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-02-15 18:46:31,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2023-02-15 18:46:31,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-15 18:46:31,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2023-02-15 18:46:31,527 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 22 [2023-02-15 18:46:31,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 18:46:31,528 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2023-02-15 18:46:31,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-15 18:46:31,529 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2023-02-15 18:46:31,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-02-15 18:46:31,529 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 18:46:31,529 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 18:46:31,539 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-15 18:46:31,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 18:46:31,730 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 18:46:31,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 18:46:31,731 INFO L85 PathProgramCache]: Analyzing trace with hash -603190335, now seen corresponding path program 1 times [2023-02-15 18:46:31,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 18:46:31,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692575119] [2023-02-15 18:46:31,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 18:46:31,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 18:46:31,754 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 18:46:31,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1241072068] [2023-02-15 18:46:31,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 18:46:31,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 18:46:31,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 18:46:31,756 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 18:46:31,760 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 18:46:31,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:46:31,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-15 18:46:31,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 18:46:31,851 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 18:46:31,851 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 18:46:31,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 18:46:31,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692575119] [2023-02-15 18:46:31,852 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 18:46:31,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241072068] [2023-02-15 18:46:31,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1241072068] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 18:46:31,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 18:46:31,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-15 18:46:31,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148846310] [2023-02-15 18:46:31,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 18:46:31,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 18:46:31,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 18:46:31,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 18:46:31,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-15 18:46:31,854 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-15 18:46:31,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 18:46:31,892 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2023-02-15 18:46:31,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 18:46:31,893 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2023-02-15 18:46:31,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 18:46:31,893 INFO L225 Difference]: With dead ends: 41 [2023-02-15 18:46:31,893 INFO L226 Difference]: Without dead ends: 25 [2023-02-15 18:46:31,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-02-15 18:46:31,894 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 8 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 18:46:31,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 68 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 18:46:31,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-02-15 18:46:31,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2023-02-15 18:46:31,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-15 18:46:31,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2023-02-15 18:46:31,898 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 24 [2023-02-15 18:46:31,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 18:46:31,898 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2023-02-15 18:46:31,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-15 18:46:31,899 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2023-02-15 18:46:31,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-02-15 18:46:31,899 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 18:46:31,899 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 18:46:31,906 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 18:46:32,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-02-15 18:46:32,105 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 18:46:32,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 18:46:32,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1366149955, now seen corresponding path program 1 times [2023-02-15 18:46:32,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 18:46:32,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712713183] [2023-02-15 18:46:32,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 18:46:32,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 18:46:32,133 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 18:46:32,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [550717883] [2023-02-15 18:46:32,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 18:46:32,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 18:46:32,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 18:46:32,153 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 18:46:32,168 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 18:46:32,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:46:32,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 56 conjunts are in the unsatisfiable core [2023-02-15 18:46:32,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 18:46:32,307 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 18:46:32,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 18:46:32,349 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 31 [2023-02-15 18:46:32,353 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 28 treesize of output 28 [2023-02-15 18:46:32,356 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2023-02-15 18:46:32,361 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2023-02-15 18:46:32,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 18:46:32,679 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 171 treesize of output 162 [2023-02-15 18:46:32,686 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 162 treesize of output 154 [2023-02-15 18:46:32,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 18:46:32,698 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 18:46:32,699 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 197 [2023-02-15 18:46:32,707 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 18:46:32,708 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 17 [2023-02-15 18:46:32,841 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 18:46:32,842 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 18:46:32,842 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 14 [2023-02-15 18:46:32,862 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 18:46:32,862 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 18:46:38,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 18:46:38,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712713183] [2023-02-15 18:46:38,869 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 18:46:38,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550717883] [2023-02-15 18:46:38,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [550717883] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 18:46:38,870 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-15 18:46:38,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2023-02-15 18:46:38,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269976063] [2023-02-15 18:46:38,870 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-15 18:46:38,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-02-15 18:46:38,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 18:46:38,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-02-15 18:46:38,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=401, Unknown=9, NotChecked=0, Total=506 [2023-02-15 18:46:38,872 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 18 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 15 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-15 18:46:39,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 18:46:39,788 INFO L93 Difference]: Finished difference Result 56 states and 61 transitions. [2023-02-15 18:46:39,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-02-15 18:46:39,789 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 15 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 26 [2023-02-15 18:46:39,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 18:46:39,790 INFO L225 Difference]: With dead ends: 56 [2023-02-15 18:46:39,790 INFO L226 Difference]: Without dead ends: 52 [2023-02-15 18:46:39,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=218, Invalid=827, Unknown=11, NotChecked=0, Total=1056 [2023-02-15 18:46:39,791 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 93 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 18:46:39,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 93 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 18:46:39,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2023-02-15 18:46:39,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 40. [2023-02-15 18:46:39,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 33 states have internal predecessors, (38), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-15 18:46:39,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2023-02-15 18:46:39,798 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 26 [2023-02-15 18:46:39,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 18:46:39,798 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2023-02-15 18:46:39,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 15 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-15 18:46:39,799 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2023-02-15 18:46:39,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-15 18:46:39,800 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 18:46:39,800 INFO L195 NwaCegarLoop]: trace histogram [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 18:46:39,821 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 18:46:40,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 18:46:40,006 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 18:46:40,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 18:46:40,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1336652411, now seen corresponding path program 2 times [2023-02-15 18:46:40,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 18:46:40,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916994015] [2023-02-15 18:46:40,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 18:46:40,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 18:46:40,028 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 18:46:40,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [923321285] [2023-02-15 18:46:40,039 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 18:46:40,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 18:46:40,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 18:46:40,048 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 18:46:40,050 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 18:46:40,098 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 18:46:40,098 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 18:46:40,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-15 18:46:40,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 18:46:40,140 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 18:46:40,140 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 18:46:40,182 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-15 18:46:40,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 18:46:40,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916994015] [2023-02-15 18:46:40,182 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 18:46:40,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923321285] [2023-02-15 18:46:40,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [923321285] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 18:46:40,183 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 18:46:40,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2023-02-15 18:46:40,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621587718] [2023-02-15 18:46:40,183 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 18:46:40,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-15 18:46:40,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 18:46:40,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-15 18:46:40,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-02-15 18:46:40,184 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-15 18:46:40,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 18:46:40,280 INFO L93 Difference]: Finished difference Result 55 states and 59 transitions. [2023-02-15 18:46:40,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-15 18:46:40,281 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 28 [2023-02-15 18:46:40,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 18:46:40,281 INFO L225 Difference]: With dead ends: 55 [2023-02-15 18:46:40,281 INFO L226 Difference]: Without dead ends: 37 [2023-02-15 18:46:40,282 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2023-02-15 18:46:40,282 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 45 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 18:46:40,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 86 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 18:46:40,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-02-15 18:46:40,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 29. [2023-02-15 18:46:40,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.125) internal successors, (27), 24 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-15 18:46:40,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2023-02-15 18:46:40,286 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 28 [2023-02-15 18:46:40,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 18:46:40,286 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2023-02-15 18:46:40,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-15 18:46:40,286 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2023-02-15 18:46:40,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-15 18:46:40,287 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 18:46:40,287 INFO L195 NwaCegarLoop]: trace histogram [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 18:46:40,303 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 18:46:40,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 18:46:40,493 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 18:46:40,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 18:46:40,493 INFO L85 PathProgramCache]: Analyzing trace with hash -178408891, now seen corresponding path program 3 times [2023-02-15 18:46:40,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 18:46:40,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532374830] [2023-02-15 18:46:40,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 18:46:40,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 18:46:40,511 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 18:46:40,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [514295786] [2023-02-15 18:46:40,511 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-15 18:46:40,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 18:46:40,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 18:46:40,513 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 18:46:40,515 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 18:46:40,591 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-02-15 18:46:40,592 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 18:46:40,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-15 18:46:40,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 18:46:40,652 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 18:46:40,652 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 18:46:40,692 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-15 18:46:40,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 18:46:40,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532374830] [2023-02-15 18:46:40,693 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 18:46:40,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [514295786] [2023-02-15 18:46:40,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [514295786] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 18:46:40,693 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 18:46:40,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2023-02-15 18:46:40,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773718921] [2023-02-15 18:46:40,694 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 18:46:40,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-15 18:46:40,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 18:46:40,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-15 18:46:40,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-02-15 18:46:40,695 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-15 18:46:40,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 18:46:40,776 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2023-02-15 18:46:40,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-15 18:46:40,776 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 28 [2023-02-15 18:46:40,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 18:46:40,777 INFO L225 Difference]: With dead ends: 36 [2023-02-15 18:46:40,777 INFO L226 Difference]: Without dead ends: 32 [2023-02-15 18:46:40,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2023-02-15 18:46:40,778 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 34 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 18:46:40,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 48 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 18:46:40,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-02-15 18:46:40,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2023-02-15 18:46:40,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 26 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-15 18:46:40,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2023-02-15 18:46:40,781 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 28 [2023-02-15 18:46:40,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 18:46:40,782 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2023-02-15 18:46:40,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-15 18:46:40,782 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2023-02-15 18:46:40,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-15 18:46:40,782 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 18:46:40,782 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] [2023-02-15 18:46:40,805 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-02-15 18:46:40,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 18:46:40,991 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 18:46:40,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 18:46:40,992 INFO L85 PathProgramCache]: Analyzing trace with hash 400980999, now seen corresponding path program 4 times [2023-02-15 18:46:40,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 18:46:40,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063752679] [2023-02-15 18:46:40,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 18:46:40,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 18:46:41,005 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 18:46:41,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1441419255] [2023-02-15 18:46:41,005 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-15 18:46:41,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 18:46:41,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 18:46:41,007 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 18:46:41,013 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 18:46:41,144 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-15 18:46:41,144 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 18:46:41,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 70 conjunts are in the unsatisfiable core [2023-02-15 18:46:41,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 18:46:41,182 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 18:46:41,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 18:46:41,216 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 31 [2023-02-15 18:46:41,219 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2023-02-15 18:46:41,222 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 27 treesize of output 26 [2023-02-15 18:46:41,293 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 64 treesize of output 53 [2023-02-15 18:46:41,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 18:46:41,691 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 189 treesize of output 176 [2023-02-15 18:46:41,696 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 171 treesize of output 161 [2023-02-15 18:46:41,712 INFO L321 Elim1Store]: treesize reduction 112, result has 0.9 percent of original size [2023-02-15 18:46:41,712 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 137 treesize of output 212 [2023-02-15 18:46:41,762 INFO L321 Elim1Store]: treesize reduction 57, result has 31.3 percent of original size [2023-02-15 18:46:41,762 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 33 treesize of output 45 [2023-02-15 18:46:42,665 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 333 treesize of output 291 [2023-02-15 18:46:42,704 INFO L321 Elim1Store]: treesize reduction 48, result has 44.2 percent of original size [2023-02-15 18:46:42,704 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 253 treesize of output 226 [2023-02-15 18:46:42,724 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 18:46:42,724 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 221 treesize of output 203 [2023-02-15 18:46:42,891 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 18:46:42,891 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 18:46:48,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 18:46:48,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063752679] [2023-02-15 18:46:48,376 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 18:46:48,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1441419255] [2023-02-15 18:46:48,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1441419255] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 18:46:48,377 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-15 18:46:48,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2023-02-15 18:46:48,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153309422] [2023-02-15 18:46:48,377 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-15 18:46:48,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-02-15 18:46:48,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 18:46:48,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-02-15 18:46:48,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=680, Unknown=7, NotChecked=0, Total=812 [2023-02-15 18:46:48,378 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand has 22 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 19 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-15 18:46:49,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 18:46:49,907 INFO L93 Difference]: Finished difference Result 55 states and 60 transitions. [2023-02-15 18:46:49,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-02-15 18:46:49,908 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 19 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 30 [2023-02-15 18:46:49,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 18:46:49,909 INFO L225 Difference]: With dead ends: 55 [2023-02-15 18:46:49,909 INFO L226 Difference]: Without dead ends: 51 [2023-02-15 18:46:49,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=213, Invalid=1112, Unknown=7, NotChecked=0, Total=1332 [2023-02-15 18:46:49,910 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 48 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-02-15 18:46:49,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 111 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-02-15 18:46:49,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-02-15 18:46:49,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 44. [2023-02-15 18:46:49,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 37 states have (on average 1.135135135135135) internal successors, (42), 37 states have internal predecessors, (42), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-15 18:46:49,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2023-02-15 18:46:49,918 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 30 [2023-02-15 18:46:49,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 18:46:49,918 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2023-02-15 18:46:49,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 19 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-15 18:46:49,919 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2023-02-15 18:46:49,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-02-15 18:46:49,919 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 18:46:49,919 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 18:46:49,927 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-02-15 18:46:50,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 18:46:50,120 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 18:46:50,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 18:46:50,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1151083191, now seen corresponding path program 5 times [2023-02-15 18:46:50,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 18:46:50,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77369443] [2023-02-15 18:46:50,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 18:46:50,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 18:46:50,141 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 18:46:50,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1038748757] [2023-02-15 18:46:50,148 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-15 18:46:50,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 18:46:50,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 18:46:50,166 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 18:46:50,204 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 18:46:50,234 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-02-15 18:46:50,234 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 18:46:50,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-15 18:46:50,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 18:46:50,293 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 18:46:50,294 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 18:46:50,339 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-15 18:46:50,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 18:46:50,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77369443] [2023-02-15 18:46:50,339 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 18:46:50,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1038748757] [2023-02-15 18:46:50,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1038748757] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 18:46:50,339 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 18:46:50,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2023-02-15 18:46:50,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900037293] [2023-02-15 18:46:50,340 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 18:46:50,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-15 18:46:50,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 18:46:50,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-15 18:46:50,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-02-15 18:46:50,341 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-15 18:46:50,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 18:46:50,446 INFO L93 Difference]: Finished difference Result 79 states and 84 transitions. [2023-02-15 18:46:50,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-15 18:46:50,446 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 32 [2023-02-15 18:46:50,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 18:46:50,447 INFO L225 Difference]: With dead ends: 79 [2023-02-15 18:46:50,447 INFO L226 Difference]: Without dead ends: 67 [2023-02-15 18:46:50,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 48 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2023-02-15 18:46:50,447 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 53 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 18:46:50,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 120 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 18:46:50,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2023-02-15 18:46:50,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 55. [2023-02-15 18:46:50,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 46 states have (on average 1.108695652173913) internal successors, (51), 46 states have internal predecessors, (51), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-15 18:46:50,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2023-02-15 18:46:50,457 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 32 [2023-02-15 18:46:50,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 18:46:50,458 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2023-02-15 18:46:50,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-15 18:46:50,458 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2023-02-15 18:46:50,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-02-15 18:46:50,458 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 18:46:50,459 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 18:46:50,463 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 18:46:50,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 18:46:50,663 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 18:46:50,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 18:46:50,664 INFO L85 PathProgramCache]: Analyzing trace with hash -475590135, now seen corresponding path program 6 times [2023-02-15 18:46:50,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 18:46:50,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216235218] [2023-02-15 18:46:50,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 18:46:50,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 18:46:50,676 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 18:46:50,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [792638167] [2023-02-15 18:46:50,676 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-15 18:46:50,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 18:46:50,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 18:46:50,677 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 18:46:50,679 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 18:46:50,790 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2023-02-15 18:46:50,790 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 18:46:50,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-15 18:46:50,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 18:46:50,871 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 18:46:50,871 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 18:46:50,926 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-15 18:46:50,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 18:46:50,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216235218] [2023-02-15 18:46:50,927 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 18:46:50,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [792638167] [2023-02-15 18:46:50,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [792638167] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 18:46:50,927 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 18:46:50,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2023-02-15 18:46:50,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270875438] [2023-02-15 18:46:50,929 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 18:46:50,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-15 18:46:50,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 18:46:50,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-15 18:46:50,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-02-15 18:46:50,932 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-15 18:46:51,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 18:46:51,083 INFO L93 Difference]: Finished difference Result 66 states and 69 transitions. [2023-02-15 18:46:51,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-15 18:46:51,083 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 32 [2023-02-15 18:46:51,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 18:46:51,084 INFO L225 Difference]: With dead ends: 66 [2023-02-15 18:46:51,084 INFO L226 Difference]: Without dead ends: 62 [2023-02-15 18:46:51,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 48 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2023-02-15 18:46:51,084 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 48 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 18:46:51,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 94 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 18:46:51,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2023-02-15 18:46:51,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 57. [2023-02-15 18:46:51,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 48 states have (on average 1.1041666666666667) internal successors, (53), 48 states have internal predecessors, (53), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-15 18:46:51,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions. [2023-02-15 18:46:51,095 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 32 [2023-02-15 18:46:51,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 18:46:51,095 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 61 transitions. [2023-02-15 18:46:51,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-15 18:46:51,096 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2023-02-15 18:46:51,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-02-15 18:46:51,096 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 18:46:51,096 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, 1, 1] [2023-02-15 18:46:51,105 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 18:46:51,305 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,SelfDestructingSolverStorable8 [2023-02-15 18:46:51,306 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 18:46:51,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 18:46:51,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1722352949, now seen corresponding path program 7 times [2023-02-15 18:46:51,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 18:46:51,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140099305] [2023-02-15 18:46:51,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 18:46:51,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 18:46:51,318 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 18:46:51,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [820122838] [2023-02-15 18:46:51,318 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-15 18:46:51,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 18:46:51,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 18:46:51,320 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 18:46:51,322 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 18:46:51,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:46:51,463 WARN L261 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 96 conjunts are in the unsatisfiable core [2023-02-15 18:46:51,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 18:46:51,499 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 18:46:51,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 18:46:51,532 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 31 [2023-02-15 18:46:51,535 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 28 treesize of output 28 [2023-02-15 18:46:51,537 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2023-02-15 18:46:51,542 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2023-02-15 18:46:51,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 18:46:51,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 18:46:51,656 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 43 [2023-02-15 18:46:51,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 18:46:51,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 18:46:51,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 18:46:51,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 18:46:51,763 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 78 treesize of output 73 [2023-02-15 18:46:52,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 18:46:52,275 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 207 treesize of output 190 [2023-02-15 18:46:52,288 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 180 treesize of output 168 [2023-02-15 18:46:52,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 18:46:52,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 18:46:52,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 18:46:52,314 INFO L321 Elim1Store]: treesize reduction 170, result has 0.6 percent of original size [2023-02-15 18:46:52,314 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 144 treesize of output 222 [2023-02-15 18:46:52,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 18:46:52,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 18:46:52,377 INFO L321 Elim1Store]: treesize reduction 85, result has 32.5 percent of original size [2023-02-15 18:46:52,377 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 63 [2023-02-15 18:46:52,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 18:46:52,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 18:46:52,489 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 18:46:52,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 18:46:52,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 18:46:52,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 18:46:52,492 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 18:46:53,094 INFO L321 Elim1Store]: treesize reduction 687, result has 17.2 percent of original size [2023-02-15 18:46:53,095 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 9 select indices, 9 select index equivalence classes, 10 disjoint index pairs (out of 36 index pairs), introduced 10 new quantified variables, introduced 26 case distinctions, treesize of input 448 treesize of output 888 [2023-02-15 18:46:54,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 18:46:54,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 18:46:54,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 18:46:54,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 18:46:54,906 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 18:46:54,987 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 18:46:55,003 INFO L217 Elim1Store]: Index analysis took 310 ms [2023-02-15 18:46:55,265 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 18:46:55,291 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 18:46:55,853 INFO L321 Elim1Store]: treesize reduction 750, result has 23.6 percent of original size [2023-02-15 18:46:55,853 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 5 select indices, 5 select index equivalence classes, 16 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 577 treesize of output 586 [2023-02-15 18:46:56,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 18:46:56,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 18:46:56,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 18:46:56,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 18:46:56,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 18:46:56,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 18:46:56,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 18:46:56,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 18:46:56,078 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 18:46:56,086 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 18:46:56,107 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 18:46:56,142 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 18:46:56,158 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 346 treesize of output 321 [2023-02-15 18:46:56,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 18:46:56,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 18:46:56,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 18:46:56,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 18:46:56,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 18:46:56,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 18:46:56,266 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 18:46:56,285 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 242 treesize of output 91 [2023-02-15 18:47:08,888 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 1445 treesize of output 1315