./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 6c24879c 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-?-6c24879 [2022-07-11 23:03:18,843 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-11 23:03:18,845 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-11 23:03:18,896 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-11 23:03:18,896 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-11 23:03:18,898 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-11 23:03:18,900 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-11 23:03:18,902 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-11 23:03:18,904 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-11 23:03:18,909 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-11 23:03:18,911 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-11 23:03:18,913 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-11 23:03:18,913 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-11 23:03:18,916 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-11 23:03:18,917 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-11 23:03:18,921 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-11 23:03:18,922 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-11 23:03:18,924 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-11 23:03:18,925 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-11 23:03:18,931 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-11 23:03:18,933 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-11 23:03:18,934 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-11 23:03:18,935 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-11 23:03:18,936 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-11 23:03:18,938 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-11 23:03:18,941 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-11 23:03:18,941 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-11 23:03:18,942 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-11 23:03:18,943 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-11 23:03:18,944 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-11 23:03:18,945 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-11 23:03:18,945 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-11 23:03:18,946 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-11 23:03:18,947 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-11 23:03:18,947 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-11 23:03:18,948 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-11 23:03:18,948 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-11 23:03:18,949 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-11 23:03:18,949 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-11 23:03:18,949 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-11 23:03:18,950 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-11 23:03:18,952 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-11 23:03:18,952 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-11 23:03:18,990 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-11 23:03:18,990 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-11 23:03:18,990 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-11 23:03:18,990 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-11 23:03:18,991 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-11 23:03:18,991 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-11 23:03:18,992 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-11 23:03:18,992 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-11 23:03:18,992 INFO L138 SettingsManager]: * Use SBE=true [2022-07-11 23:03:18,993 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-11 23:03:18,993 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-11 23:03:18,993 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-11 23:03:18,994 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-11 23:03:18,994 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-11 23:03:18,994 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-11 23:03:18,994 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-11 23:03:18,994 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-11 23:03:18,995 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-11 23:03:18,995 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-11 23:03:18,995 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-11 23:03:18,995 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-11 23:03:18,995 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-11 23:03:18,996 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-11 23:03:18,996 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-11 23:03:18,996 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-11 23:03:18,996 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-11 23:03:18,997 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-11 23:03:18,997 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-11 23:03:18,997 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-11 23:03:18,997 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-11 23:03:18,997 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-11 23:03:18,998 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-11 23:03:18,998 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-11 23:03:18,998 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1a25becec148beba97bef86c2a84619bb26dfafe7c127e8d70246837f0d2d470 [2022-07-11 23:03:19,240 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-11 23:03:19,264 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-11 23:03:19,268 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-11 23:03:19,269 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-11 23:03:19,269 INFO L275 PluginConnector]: CDTParser initialized [2022-07-11 23:03:19,270 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-patterns/array2_pattern.c [2022-07-11 23:03:19,331 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3700cb7bc/d2030053e24643a09a602728284ef5d2/FLAG0b7face55 [2022-07-11 23:03:19,721 INFO L306 CDTParser]: Found 1 translation units. [2022-07-11 23:03:19,721 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array2_pattern.c [2022-07-11 23:03:19,727 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3700cb7bc/d2030053e24643a09a602728284ef5d2/FLAG0b7face55 [2022-07-11 23:03:19,737 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3700cb7bc/d2030053e24643a09a602728284ef5d2 [2022-07-11 23:03:19,740 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-11 23:03:19,741 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-11 23:03:19,742 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-11 23:03:19,742 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-11 23:03:19,745 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-11 23:03:19,746 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.07 11:03:19" (1/1) ... [2022-07-11 23:03:19,747 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cae9c15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:03:19, skipping insertion in model container [2022-07-11 23:03:19,747 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.07 11:03:19" (1/1) ... [2022-07-11 23:03:19,755 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-11 23:03:19,767 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-11 23:03:19,904 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array2_pattern.c[1322,1335] [2022-07-11 23:03:19,921 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-11 23:03:19,927 INFO L203 MainTranslator]: Completed pre-run [2022-07-11 23:03:19,937 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array2_pattern.c[1322,1335] [2022-07-11 23:03:19,945 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-11 23:03:19,956 INFO L208 MainTranslator]: Completed translation [2022-07-11 23:03:19,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:03:19 WrapperNode [2022-07-11 23:03:19,957 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-11 23:03:19,958 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-11 23:03:19,958 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-11 23:03:19,958 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-11 23:03:19,964 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:03:19" (1/1) ... [2022-07-11 23:03:19,970 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:03:19" (1/1) ... [2022-07-11 23:03:19,986 INFO L137 Inliner]: procedures = 16, calls = 24, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 80 [2022-07-11 23:03:19,987 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-11 23:03:19,987 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-11 23:03:19,987 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-11 23:03:19,988 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-11 23:03:19,995 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:03:19" (1/1) ... [2022-07-11 23:03:19,995 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:03:19" (1/1) ... [2022-07-11 23:03:19,997 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:03:19" (1/1) ... [2022-07-11 23:03:19,997 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:03:19" (1/1) ... [2022-07-11 23:03:20,007 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:03:19" (1/1) ... [2022-07-11 23:03:20,012 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:03:19" (1/1) ... [2022-07-11 23:03:20,019 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:03:19" (1/1) ... [2022-07-11 23:03:20,022 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-11 23:03:20,023 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-11 23:03:20,024 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-11 23:03:20,024 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-11 23:03:20,025 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:03:19" (1/1) ... [2022-07-11 23:03:20,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-11 23:03:20,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 23:03:20,057 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-11 23:03:20,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-11 23:03:20,098 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-11 23:03:20,099 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-11 23:03:20,099 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-11 23:03:20,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-11 23:03:20,099 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-11 23:03:20,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-11 23:03:20,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-11 23:03:20,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-11 23:03:20,100 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-11 23:03:20,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-11 23:03:20,163 INFO L234 CfgBuilder]: Building ICFG [2022-07-11 23:03:20,165 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-11 23:03:20,280 INFO L275 CfgBuilder]: Performing block encoding [2022-07-11 23:03:20,285 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-11 23:03:20,285 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-07-11 23:03:20,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.07 11:03:20 BoogieIcfgContainer [2022-07-11 23:03:20,287 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-11 23:03:20,289 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-11 23:03:20,289 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-11 23:03:20,292 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-11 23:03:20,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.07 11:03:19" (1/3) ... [2022-07-11 23:03:20,293 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@424a7495 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.07 11:03:20, skipping insertion in model container [2022-07-11 23:03:20,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:03:19" (2/3) ... [2022-07-11 23:03:20,293 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@424a7495 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.07 11:03:20, skipping insertion in model container [2022-07-11 23:03:20,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.07 11:03:20" (3/3) ... [2022-07-11 23:03:20,294 INFO L111 eAbstractionObserver]: Analyzing ICFG array2_pattern.c [2022-07-11 23:03:20,306 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-11 23:03:20,307 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-11 23:03:20,348 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-11 23:03:20,354 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2482ffb0, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@547d9bb1 [2022-07-11 23:03:20,354 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-11 23:03:20,358 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) [2022-07-11 23:03:20,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-11 23:03:20,365 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:03:20,366 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:03:20,366 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:03:20,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:03:20,371 INFO L85 PathProgramCache]: Analyzing trace with hash -800294020, now seen corresponding path program 1 times [2022-07-11 23:03:20,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:03:20,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309455328] [2022-07-11 23:03:20,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:03:20,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:03:20,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:03:20,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-11 23:03:20,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:03:20,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:03:20,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:03:20,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309455328] [2022-07-11 23:03:20,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309455328] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:03:20,553 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:03:20,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-11 23:03:20,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991760363] [2022-07-11 23:03:20,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:03:20,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-11 23:03:20,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:03:20,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-11 23:03:20,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-11 23:03:20,602 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) [2022-07-11 23:03:20,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:03:20,619 INFO L93 Difference]: Finished difference Result 47 states and 66 transitions. [2022-07-11 23:03:20,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-11 23:03:20,621 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 [2022-07-11 23:03:20,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:03:20,627 INFO L225 Difference]: With dead ends: 47 [2022-07-11 23:03:20,627 INFO L226 Difference]: Without dead ends: 21 [2022-07-11 23:03:20,631 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 [2022-07-11 23:03:20,635 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 [2022-07-11 23:03:20,637 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] [2022-07-11 23:03:20,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-07-11 23:03:20,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-07-11 23:03:20,666 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) [2022-07-11 23:03:20,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2022-07-11 23:03:20,671 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 15 [2022-07-11 23:03:20,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:03:20,672 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2022-07-11 23:03:20,672 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) [2022-07-11 23:03:20,673 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2022-07-11 23:03:20,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-07-11 23:03:20,674 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:03:20,675 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:03:20,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-11 23:03:20,675 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:03:20,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:03:20,676 INFO L85 PathProgramCache]: Analyzing trace with hash -952637313, now seen corresponding path program 1 times [2022-07-11 23:03:20,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:03:20,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305060285] [2022-07-11 23:03:20,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:03:20,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:03:20,723 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-11 23:03:20,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [280670416] [2022-07-11 23:03:20,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:03:20,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 23:03:20,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 23:03:20,743 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-11 23:03:20,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-11 23:03:20,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:03:20,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-11 23:03:20,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 23:03:20,987 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-11 23:03:20,987 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-11 23:03:20,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:03:20,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305060285] [2022-07-11 23:03:20,988 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-11 23:03:20,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [280670416] [2022-07-11 23:03:20,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [280670416] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:03:20,988 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:03:20,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:03:20,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176883593] [2022-07-11 23:03:20,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:03:20,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:03:20,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:03:20,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:03:20,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:03:20,991 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) [2022-07-11 23:03:21,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:03:21,014 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2022-07-11 23:03:21,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:03:21,014 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 [2022-07-11 23:03:21,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:03:21,015 INFO L225 Difference]: With dead ends: 26 [2022-07-11 23:03:21,016 INFO L226 Difference]: Without dead ends: 22 [2022-07-11 23:03:21,016 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 [2022-07-11 23:03:21,017 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 [2022-07-11 23:03:21,018 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] [2022-07-11 23:03:21,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-07-11 23:03:21,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-07-11 23:03:21,025 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) [2022-07-11 23:03:21,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2022-07-11 23:03:21,027 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 22 [2022-07-11 23:03:21,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:03:21,029 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2022-07-11 23:03:21,029 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) [2022-07-11 23:03:21,029 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2022-07-11 23:03:21,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-07-11 23:03:21,030 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:03:21,030 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] [2022-07-11 23:03:21,049 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-11 23:03:21,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 23:03:21,240 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:03:21,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:03:21,240 INFO L85 PathProgramCache]: Analyzing trace with hash -603190335, now seen corresponding path program 1 times [2022-07-11 23:03:21,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:03:21,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463013228] [2022-07-11 23:03:21,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:03:21,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:03:21,266 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-11 23:03:21,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1062595265] [2022-07-11 23:03:21,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:03:21,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 23:03:21,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 23:03:21,268 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-11 23:03:21,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-11 23:03:21,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:03:21,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-11 23:03:21,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 23:03:21,372 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:03:21,372 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-11 23:03:21,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:03:21,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463013228] [2022-07-11 23:03:21,373 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-11 23:03:21,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062595265] [2022-07-11 23:03:21,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062595265] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:03:21,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:03:21,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-11 23:03:21,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161708738] [2022-07-11 23:03:21,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:03:21,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-11 23:03:21,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:03:21,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-11 23:03:21,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-11 23:03:21,375 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) [2022-07-11 23:03:21,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:03:21,427 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2022-07-11 23:03:21,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-11 23:03:21,428 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 [2022-07-11 23:03:21,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:03:21,429 INFO L225 Difference]: With dead ends: 41 [2022-07-11 23:03:21,429 INFO L226 Difference]: Without dead ends: 25 [2022-07-11 23:03:21,429 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 [2022-07-11 23:03:21,431 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 9 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-11 23:03:21,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 59 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-11 23:03:21,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-07-11 23:03:21,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2022-07-11 23:03:21,435 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) [2022-07-11 23:03:21,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2022-07-11 23:03:21,436 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 24 [2022-07-11 23:03:21,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:03:21,436 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2022-07-11 23:03:21,436 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) [2022-07-11 23:03:21,437 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2022-07-11 23:03:21,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-07-11 23:03:21,437 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:03:21,437 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] [2022-07-11 23:03:21,482 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-11 23:03:21,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-07-11 23:03:21,657 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:03:21,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:03:21,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1366149955, now seen corresponding path program 1 times [2022-07-11 23:03:21,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:03:21,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571424418] [2022-07-11 23:03:21,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:03:21,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:03:21,695 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-11 23:03:21,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [703717130] [2022-07-11 23:03:21,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:03:21,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 23:03:21,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 23:03:21,703 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-11 23:03:21,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-11 23:03:21,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:03:21,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 45 conjunts are in the unsatisfiable core [2022-07-11 23:03:21,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 23:03:21,841 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-11 23:03:21,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:03:21,897 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-11 23:03:21,906 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-11 23:03:21,914 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-11 23:03:21,924 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-11 23:03:22,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:03:22,441 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 175 treesize of output 166 [2022-07-11 23:03:22,469 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-11 23:03:22,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:03:22,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:03:22,481 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-11 23:03:22,483 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-11 23:03:22,495 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-11 23:03:22,496 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-11 23:03:22,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:03:22,555 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 133 treesize of output 27 [2022-07-11 23:03:22,710 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-11 23:03:22,711 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-11 23:03:22,712 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-11 23:03:22,743 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:03:22,743 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-11 23:03:25,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:03:25,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571424418] [2022-07-11 23:03:25,703 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-11 23:03:25,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703717130] [2022-07-11 23:03:25,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703717130] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-11 23:03:25,703 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-11 23:03:25,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2022-07-11 23:03:25,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52061532] [2022-07-11 23:03:25,703 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-11 23:03:25,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-11 23:03:25,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:03:25,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-11 23:03:25,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=235, Unknown=7, NotChecked=0, Total=306 [2022-07-11 23:03:25,705 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 12 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) [2022-07-11 23:03:25,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:03:25,770 INFO L93 Difference]: Finished difference Result 43 states and 49 transitions. [2022-07-11 23:03:25,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-11 23:03:25,771 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 12 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 [2022-07-11 23:03:25,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:03:25,773 INFO L225 Difference]: With dead ends: 43 [2022-07-11 23:03:25,773 INFO L226 Difference]: Without dead ends: 39 [2022-07-11 23:03:25,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=64, Invalid=235, Unknown=7, NotChecked=0, Total=306 [2022-07-11 23:03:25,775 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 12 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 34 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-11 23:03:25,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 127 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 34 Unchecked, 0.1s Time] [2022-07-11 23:03:25,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-07-11 23:03:25,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2022-07-11 23:03:25,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 30 states have internal predecessors, (35), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-11 23:03:25,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2022-07-11 23:03:25,782 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 26 [2022-07-11 23:03:25,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:03:25,783 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2022-07-11 23:03:25,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 12 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) [2022-07-11 23:03:25,783 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2022-07-11 23:03:25,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-07-11 23:03:25,784 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:03:25,784 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] [2022-07-11 23:03:25,811 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-11 23:03:25,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 23:03:26,000 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:03:26,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:03:26,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1336652411, now seen corresponding path program 2 times [2022-07-11 23:03:26,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:03:26,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126108347] [2022-07-11 23:03:26,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:03:26,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:03:26,038 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-11 23:03:26,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2042837404] [2022-07-11 23:03:26,038 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-11 23:03:26,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 23:03:26,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 23:03:26,046 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-11 23:03:26,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-11 23:03:26,115 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-11 23:03:26,115 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-11 23:03:26,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-11 23:03:26,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 23:03:26,185 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:03:26,185 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-11 23:03:26,230 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-11 23:03:26,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:03:26,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126108347] [2022-07-11 23:03:26,231 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-11 23:03:26,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042837404] [2022-07-11 23:03:26,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2042837404] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-11 23:03:26,233 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-11 23:03:26,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-07-11 23:03:26,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41739600] [2022-07-11 23:03:26,234 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-11 23:03:26,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-11 23:03:26,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:03:26,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-11 23:03:26,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-07-11 23:03:26,238 INFO L87 Difference]: Start difference. First operand 36 states and 41 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) [2022-07-11 23:03:26,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:03:26,355 INFO L93 Difference]: Finished difference Result 67 states and 73 transitions. [2022-07-11 23:03:26,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-11 23:03:26,358 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 [2022-07-11 23:03:26,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:03:26,359 INFO L225 Difference]: With dead ends: 67 [2022-07-11 23:03:26,359 INFO L226 Difference]: Without dead ends: 57 [2022-07-11 23:03:26,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-07-11 23:03:26,360 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 52 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-11 23:03:26,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 82 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-11 23:03:26,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-07-11 23:03:26,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 45. [2022-07-11 23:03:26,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 37 states have (on average 1.135135135135135) internal successors, (42), 37 states have internal predecessors, (42), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-11 23:03:26,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 50 transitions. [2022-07-11 23:03:26,373 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 50 transitions. Word has length 28 [2022-07-11 23:03:26,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:03:26,373 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 50 transitions. [2022-07-11 23:03:26,374 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) [2022-07-11 23:03:26,375 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 50 transitions. [2022-07-11 23:03:26,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-07-11 23:03:26,376 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:03:26,376 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] [2022-07-11 23:03:26,402 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-11 23:03:26,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 23:03:26,600 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:03:26,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:03:26,600 INFO L85 PathProgramCache]: Analyzing trace with hash -178408891, now seen corresponding path program 3 times [2022-07-11 23:03:26,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:03:26,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328089136] [2022-07-11 23:03:26,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:03:26,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:03:26,625 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-11 23:03:26,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1095665358] [2022-07-11 23:03:26,635 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-11 23:03:26,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 23:03:26,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 23:03:26,636 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-11 23:03:26,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-11 23:03:26,718 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-07-11 23:03:26,718 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-11 23:03:26,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-11 23:03:26,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 23:03:26,783 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:03:26,784 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-11 23:03:26,829 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-11 23:03:26,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:03:26,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328089136] [2022-07-11 23:03:26,830 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-11 23:03:26,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095665358] [2022-07-11 23:03:26,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1095665358] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-11 23:03:26,830 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-11 23:03:26,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-07-11 23:03:26,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622926251] [2022-07-11 23:03:26,830 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-11 23:03:26,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-11 23:03:26,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:03:26,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-11 23:03:26,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-07-11 23:03:26,831 INFO L87 Difference]: Start difference. First operand 45 states and 50 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) [2022-07-11 23:03:26,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:03:26,973 INFO L93 Difference]: Finished difference Result 60 states and 63 transitions. [2022-07-11 23:03:26,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-11 23:03:26,974 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 [2022-07-11 23:03:26,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:03:26,975 INFO L225 Difference]: With dead ends: 60 [2022-07-11 23:03:26,975 INFO L226 Difference]: Without dead ends: 56 [2022-07-11 23:03:26,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2022-07-11 23:03:26,976 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 48 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-11 23:03:26,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 83 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-11 23:03:26,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-07-11 23:03:26,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 51. [2022-07-11 23:03:26,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 42 states have (on average 1.119047619047619) internal successors, (47), 42 states have internal predecessors, (47), 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) [2022-07-11 23:03:26,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2022-07-11 23:03:26,984 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 28 [2022-07-11 23:03:26,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:03:26,984 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2022-07-11 23:03:26,985 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) [2022-07-11 23:03:26,985 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2022-07-11 23:03:26,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-07-11 23:03:26,986 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:03:26,986 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] [2022-07-11 23:03:27,011 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-11 23:03:27,209 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 [2022-07-11 23:03:27,209 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:03:27,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:03:27,210 INFO L85 PathProgramCache]: Analyzing trace with hash 400980999, now seen corresponding path program 4 times [2022-07-11 23:03:27,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:03:27,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473116331] [2022-07-11 23:03:27,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:03:27,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:03:27,229 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-11 23:03:27,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1018341240] [2022-07-11 23:03:27,230 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-11 23:03:27,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 23:03:27,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 23:03:27,231 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) [2022-07-11 23:03:27,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-11 23:03:27,391 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-11 23:03:27,391 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-11 23:03:27,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 65 conjunts are in the unsatisfiable core [2022-07-11 23:03:27,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 23:03:27,410 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-11 23:03:27,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:03:27,435 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-11 23:03:27,439 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-11 23:03:27,443 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-11 23:03:27,447 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-11 23:03:27,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:03:27,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:03:27,519 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 64 treesize of output 53 [2022-07-11 23:03:27,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:03:28,001 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 193 treesize of output 180 [2022-07-11 23:03:28,009 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-11 23:03:28,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:03:28,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:03:28,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:03:28,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:03:28,035 INFO L356 Elim1Store]: treesize reduction 130, result has 0.8 percent of original size [2022-07-11 23:03:28,035 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 137 treesize of output 212 [2022-07-11 23:03:28,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:03:28,103 INFO L356 Elim1Store]: treesize reduction 75, result has 25.7 percent of original size [2022-07-11 23:03:28,103 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 45 [2022-07-11 23:03:28,147 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-07-11 23:03:30,905 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 300 treesize of output 256 [2022-07-11 23:03:30,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:03:30,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:03:30,950 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-11 23:03:30,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:03:30,953 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-11 23:03:30,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:03:30,974 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-11 23:03:30,974 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 515 treesize of output 436 [2022-07-11 23:03:31,001 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-11 23:03:31,002 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 171 treesize of output 173 [2022-07-11 23:03:31,299 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:03:31,300 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-11 23:03:31,634 WARN L833 $PredicateComparison]: unable to prove that (or (let ((.cse5 (<= (mod (+ c_~ARR_SIZE~0 4294967295 (* 4294967295 |c_ULTIMATE.start_main_~index~0#1|)) 4294967296) 2147483647))) (and (or (forall ((v_ArrVal_263 (Array Int Int)) (v_ArrVal_265 (Array Int Int))) (= (let ((.cse0 (let ((.cse4 (+ (* 4 (mod (+ c_~ARR_SIZE~0 4294967295 (* 4294967295 |c_ULTIMATE.start_main_~index~0#1|)) 4294967296)) |c_ULTIMATE.start_main_~#array2~0#1.offset|))) (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_263) |c_ULTIMATE.start_main_~#array2~0#1.base|) .cse4 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_265) |c_ULTIMATE.start_main_~#array2~0#1.base|) .cse4) (* |c_ULTIMATE.start_main_~index~0#1| |c_ULTIMATE.start_main_~num~0#1|)))))) (let ((.cse1 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (let ((.cse2 (select |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base|)) (.cse3 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| (* |c_ULTIMATE.start_main_~index~0#1| 4)))) (store .cse2 .cse3 (+ (* |c_ULTIMATE.start_main_~index~0#1| (* |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|)) (select .cse2 .cse3))))) |c_ULTIMATE.start_main_~#array2~0#1.base| .cse0) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ (select .cse0 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 4)) |c_ULTIMATE.start_main_~sum~0#1| (select .cse0 |c_ULTIMATE.start_main_~#array2~0#1.offset|) (select .cse1 |c_ULTIMATE.start_main_~#array1~0#1.offset|) (select .cse1 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 4))))) 0)) (not .cse5)) (or (forall ((v_ArrVal_263 (Array Int Int)) (v_ArrVal_265 (Array Int Int))) (= (let ((.cse7 (let ((.cse10 (+ (- 17179869184) (* 4 (mod (+ c_~ARR_SIZE~0 4294967295 (* 4294967295 |c_ULTIMATE.start_main_~index~0#1|)) 4294967296)) |c_ULTIMATE.start_main_~#array2~0#1.offset|))) (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_263) |c_ULTIMATE.start_main_~#array2~0#1.base|) .cse10 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_265) |c_ULTIMATE.start_main_~#array2~0#1.base|) .cse10) (* |c_ULTIMATE.start_main_~index~0#1| |c_ULTIMATE.start_main_~num~0#1|)))))) (let ((.cse6 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (let ((.cse8 (select |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base|)) (.cse9 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| (* |c_ULTIMATE.start_main_~index~0#1| 4)))) (store .cse8 .cse9 (+ (* |c_ULTIMATE.start_main_~index~0#1| (* |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|)) (select .cse8 .cse9))))) |c_ULTIMATE.start_main_~#array2~0#1.base| .cse7) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ (select .cse6 |c_ULTIMATE.start_main_~#array1~0#1.offset|) (select .cse7 |c_ULTIMATE.start_main_~#array2~0#1.offset|) |c_ULTIMATE.start_main_~sum~0#1| (select .cse6 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 4)) (select .cse7 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 4))))) 0)) .cse5))) (<= c_~ARR_SIZE~0 1)) is different from false [2022-07-11 23:03:35,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:03:35,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473116331] [2022-07-11 23:03:35,771 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-11 23:03:35,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018341240] [2022-07-11 23:03:35,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1018341240] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-11 23:03:35,772 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-11 23:03:35,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2022-07-11 23:03:35,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42061885] [2022-07-11 23:03:35,772 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-11 23:03:35,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-11 23:03:35,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:03:35,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-11 23:03:35,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=427, Unknown=4, NotChecked=42, Total=552 [2022-07-11 23:03:35,774 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand has 18 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 16 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) [2022-07-11 23:03:37,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:03:37,001 INFO L93 Difference]: Finished difference Result 79 states and 88 transitions. [2022-07-11 23:03:37,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-11 23:03:37,001 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 16 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 [2022-07-11 23:03:37,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:03:37,002 INFO L225 Difference]: With dead ends: 79 [2022-07-11 23:03:37,002 INFO L226 Difference]: Without dead ends: 75 [2022-07-11 23:03:37,003 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=100, Invalid=550, Unknown=4, NotChecked=48, Total=702 [2022-07-11 23:03:37,003 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 26 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 117 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-11 23:03:37,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 170 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 87 Invalid, 0 Unknown, 117 Unchecked, 0.6s Time] [2022-07-11 23:03:37,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-07-11 23:03:37,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 64. [2022-07-11 23:03:37,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 53 states have (on average 1.1320754716981132) internal successors, (60), 53 states have internal predecessors, (60), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-07-11 23:03:37,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 70 transitions. [2022-07-11 23:03:37,014 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 70 transitions. Word has length 30 [2022-07-11 23:03:37,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:03:37,014 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 70 transitions. [2022-07-11 23:03:37,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 16 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) [2022-07-11 23:03:37,015 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 70 transitions. [2022-07-11 23:03:37,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-07-11 23:03:37,016 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:03:37,016 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] [2022-07-11 23:03:37,043 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-11 23:03:37,233 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 [2022-07-11 23:03:37,234 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:03:37,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:03:37,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1151083191, now seen corresponding path program 5 times [2022-07-11 23:03:37,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:03:37,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400623729] [2022-07-11 23:03:37,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:03:37,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:03:37,259 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-11 23:03:37,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [882477073] [2022-07-11 23:03:37,259 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-11 23:03:37,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 23:03:37,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 23:03:37,275 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) [2022-07-11 23:03:37,276 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-11 23:03:37,339 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-07-11 23:03:37,340 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-11 23:03:37,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-11 23:03:37,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 23:03:37,971 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:03:37,972 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-11 23:03:38,344 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-11 23:03:38,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:03:38,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400623729] [2022-07-11 23:03:38,344 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-11 23:03:38,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882477073] [2022-07-11 23:03:38,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [882477073] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-11 23:03:38,345 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-11 23:03:38,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2022-07-11 23:03:38,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35934509] [2022-07-11 23:03:38,345 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-11 23:03:38,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-11 23:03:38,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:03:38,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-11 23:03:38,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-07-11 23:03:38,347 INFO L87 Difference]: Start difference. First operand 64 states and 70 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) [2022-07-11 23:03:39,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:03:39,525 INFO L93 Difference]: Finished difference Result 103 states and 109 transitions. [2022-07-11 23:03:39,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-11 23:03:39,526 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 [2022-07-11 23:03:39,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:03:39,527 INFO L225 Difference]: With dead ends: 103 [2022-07-11 23:03:39,527 INFO L226 Difference]: Without dead ends: 91 [2022-07-11 23:03:39,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2022-07-11 23:03:39,528 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 82 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-11 23:03:39,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 106 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-11 23:03:39,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2022-07-11 23:03:39,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 72. [2022-07-11 23:03:39,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 59 states have (on average 1.11864406779661) internal successors, (66), 59 states have internal predecessors, (66), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-11 23:03:39,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 78 transitions. [2022-07-11 23:03:39,539 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 78 transitions. Word has length 32 [2022-07-11 23:03:39,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:03:39,539 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 78 transitions. [2022-07-11 23:03:39,539 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) [2022-07-11 23:03:39,539 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 78 transitions. [2022-07-11 23:03:39,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-07-11 23:03:39,540 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:03:39,540 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] [2022-07-11 23:03:39,558 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-11 23:03:39,751 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 [2022-07-11 23:03:39,752 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:03:39,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:03:39,752 INFO L85 PathProgramCache]: Analyzing trace with hash -475590135, now seen corresponding path program 6 times [2022-07-11 23:03:39,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:03:39,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268960090] [2022-07-11 23:03:39,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:03:39,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:03:39,777 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-11 23:03:39,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1199460590] [2022-07-11 23:03:39,778 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-07-11 23:03:39,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 23:03:39,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 23:03:39,779 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) [2022-07-11 23:03:39,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-11 23:03:39,913 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-07-11 23:03:39,914 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-11 23:03:39,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-11 23:03:39,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 23:03:40,566 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:03:40,566 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-11 23:03:40,944 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-11 23:03:40,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:03:40,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268960090] [2022-07-11 23:03:40,945 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-11 23:03:40,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1199460590] [2022-07-11 23:03:40,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1199460590] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-11 23:03:40,945 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-11 23:03:40,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2022-07-11 23:03:40,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063866083] [2022-07-11 23:03:40,945 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-11 23:03:40,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-11 23:03:40,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:03:40,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-11 23:03:40,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-07-11 23:03:40,946 INFO L87 Difference]: Start difference. First operand 72 states and 78 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) [2022-07-11 23:03:42,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:03:42,268 INFO L93 Difference]: Finished difference Result 90 states and 94 transitions. [2022-07-11 23:03:42,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-11 23:03:42,269 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 [2022-07-11 23:03:42,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:03:42,270 INFO L225 Difference]: With dead ends: 90 [2022-07-11 23:03:42,270 INFO L226 Difference]: Without dead ends: 86 [2022-07-11 23:03:42,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2022-07-11 23:03:42,271 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 53 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-11 23:03:42,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 164 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-11 23:03:42,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-07-11 23:03:42,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 74. [2022-07-11 23:03:42,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 61 states have (on average 1.1147540983606556) internal successors, (68), 61 states have internal predecessors, (68), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-11 23:03:42,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 80 transitions. [2022-07-11 23:03:42,283 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 80 transitions. Word has length 32 [2022-07-11 23:03:42,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:03:42,283 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 80 transitions. [2022-07-11 23:03:42,284 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) [2022-07-11 23:03:42,284 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 80 transitions. [2022-07-11 23:03:42,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-07-11 23:03:42,285 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:03:42,285 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:03:42,302 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-11 23:03:42,491 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 [2022-07-11 23:03:42,491 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:03:42,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:03:42,492 INFO L85 PathProgramCache]: Analyzing trace with hash -2113032700, now seen corresponding path program 1 times [2022-07-11 23:03:42,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:03:42,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534730994] [2022-07-11 23:03:42,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:03:42,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:03:42,505 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-11 23:03:42,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1237216239] [2022-07-11 23:03:42,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:03:42,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 23:03:42,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 23:03:42,507 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) [2022-07-11 23:03:42,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-11 23:03:42,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:03:42,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 61 conjunts are in the unsatisfiable core [2022-07-11 23:03:42,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 23:03:42,855 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-11 23:03:43,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:03:43,089 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-11 23:03:43,104 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-11 23:03:43,128 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-11 23:03:43,150 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-11 23:03:45,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:03:45,069 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 179 treesize of output 170 [2022-07-11 23:03:45,090 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 170 treesize of output 162 [2022-07-11 23:03:45,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:03:45,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:03:45,126 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-11 23:03:45,127 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 134 treesize of output 201 [2022-07-11 23:03:45,150 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-11 23:03:45,151 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 30 treesize of output 21 [2022-07-11 23:03:46,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:03:46,168 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 175 treesize of output 166 [2022-07-11 23:03:46,185 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-11 23:03:46,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:03:46,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:03:46,214 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-11 23:03:46,215 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-11 23:03:46,232 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-11 23:03:46,233 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-11 23:03:46,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:03:46,342 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 147 treesize of output 42 [2022-07-11 23:03:47,037 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-11 23:03:47,039 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-11 23:03:47,039 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 46 treesize of output 19 [2022-07-11 23:03:47,256 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-11 23:03:47,256 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-11 23:03:47,755 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse4 (<= (mod (+ c_~ARR_SIZE~0 4294967295 (* 4294967295 |c_ULTIMATE.start_main_~index~0#1|)) 4294967296) 2147483647))) (and (or (forall ((v_ArrVal_447 (Array Int Int)) (v_ArrVal_449 (Array Int Int))) (= (let ((.cse0 (let ((.cse3 (+ (- 17179869184) (* 4 (mod (+ c_~ARR_SIZE~0 4294967295 (* 4294967295 |c_ULTIMATE.start_main_~index~0#1|)) 4294967296)) |c_ULTIMATE.start_main_~#array2~0#1.offset|))) (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_447) |c_ULTIMATE.start_main_~#array2~0#1.base|) .cse3 (+ (* |c_ULTIMATE.start_main_~index~0#1| |c_ULTIMATE.start_main_~num~0#1|) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_449) |c_ULTIMATE.start_main_~#array2~0#1.base|) .cse3)))))) (+ |c_ULTIMATE.start_main_~sum~0#1| (select .cse0 |c_ULTIMATE.start_main_~#array2~0#1.offset|) (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (let ((.cse1 (select |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base|)) (.cse2 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| (* |c_ULTIMATE.start_main_~index~0#1| 4)))) (store .cse1 .cse2 (+ (* |c_ULTIMATE.start_main_~index~0#1| (* |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|)) (select .cse1 .cse2))))) |c_ULTIMATE.start_main_~#array2~0#1.base| .cse0) |c_ULTIMATE.start_main_~#array1~0#1.base|) |c_ULTIMATE.start_main_~#array1~0#1.offset|))) 0)) .cse4) (or (not .cse4) (forall ((v_ArrVal_447 (Array Int Int)) (v_ArrVal_449 (Array Int Int))) (= (let ((.cse7 (let ((.cse8 (+ (* 4 (mod (+ c_~ARR_SIZE~0 4294967295 (* 4294967295 |c_ULTIMATE.start_main_~index~0#1|)) 4294967296)) |c_ULTIMATE.start_main_~#array2~0#1.offset|))) (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_447) |c_ULTIMATE.start_main_~#array2~0#1.base|) .cse8 (+ (* |c_ULTIMATE.start_main_~index~0#1| |c_ULTIMATE.start_main_~num~0#1|) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_449) |c_ULTIMATE.start_main_~#array2~0#1.base|) .cse8)))))) (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (let ((.cse5 (select |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base|)) (.cse6 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| (* |c_ULTIMATE.start_main_~index~0#1| 4)))) (store .cse5 .cse6 (+ (* |c_ULTIMATE.start_main_~index~0#1| (* |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|)) (select .cse5 .cse6))))) |c_ULTIMATE.start_main_~#array2~0#1.base| .cse7) |c_ULTIMATE.start_main_~#array1~0#1.base|) |c_ULTIMATE.start_main_~#array1~0#1.offset|) |c_ULTIMATE.start_main_~sum~0#1| (select .cse7 |c_ULTIMATE.start_main_~#array2~0#1.offset|))) 0))))) is different from false [2022-07-11 23:03:55,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:03:55,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534730994] [2022-07-11 23:03:55,701 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-11 23:03:55,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237216239] [2022-07-11 23:03:55,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1237216239] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-11 23:03:55,701 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-11 23:03:55,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2022-07-11 23:03:55,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913611312] [2022-07-11 23:03:55,701 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-11 23:03:55,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-11 23:03:55,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:03:55,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-11 23:03:55,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=4, NotChecked=32, Total=342 [2022-07-11 23:03:55,702 INFO L87 Difference]: Start difference. First operand 74 states and 80 transitions. Second operand has 15 states, 15 states have (on average 1.6) internal successors, (24), 13 states have internal predecessors, (24), 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) [2022-07-11 23:03:58,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:03:58,343 INFO L93 Difference]: Finished difference Result 81 states and 86 transitions. [2022-07-11 23:03:58,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-11 23:03:58,344 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.6) internal successors, (24), 13 states have internal predecessors, (24), 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 34 [2022-07-11 23:03:58,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:03:58,344 INFO L225 Difference]: With dead ends: 81 [2022-07-11 23:03:58,345 INFO L226 Difference]: Without dead ends: 57 [2022-07-11 23:03:58,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=4, NotChecked=42, Total=552 [2022-07-11 23:03:58,346 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 30 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 50 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-11 23:03:58,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 132 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 67 Invalid, 0 Unknown, 50 Unchecked, 0.6s Time] [2022-07-11 23:03:58,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-07-11 23:03:58,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2022-07-11 23:03:58,352 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) [2022-07-11 23:03:58,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions. [2022-07-11 23:03:58,353 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 34 [2022-07-11 23:03:58,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:03:58,353 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 61 transitions. [2022-07-11 23:03:58,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.6) internal successors, (24), 13 states have internal predecessors, (24), 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) [2022-07-11 23:03:58,354 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2022-07-11 23:03:58,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-07-11 23:03:58,354 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:03:58,354 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] [2022-07-11 23:03:58,371 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-11 23:03:58,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-11 23:03:58,559 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:03:58,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:03:58,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1722352949, now seen corresponding path program 7 times [2022-07-11 23:03:58,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:03:58,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466494233] [2022-07-11 23:03:58,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:03:58,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:03:58,574 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-11 23:03:58,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1457520325] [2022-07-11 23:03:58,574 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-07-11 23:03:58,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 23:03:58,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 23:03:58,576 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-11 23:03:58,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-11 23:03:58,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:03:58,749 WARN L261 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 85 conjunts are in the unsatisfiable core [2022-07-11 23:03:58,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 23:03:58,974 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-11 23:03:59,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:03:59,240 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-11 23:03:59,259 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-11 23:03:59,295 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-11 23:03:59,333 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-11 23:04:00,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:00,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:00,078 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 64 treesize of output 53 [2022-07-11 23:04:01,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:01,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:01,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:01,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:01,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:01,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:01,246 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 88 treesize of output 83 [2022-07-11 23:04:05,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:05,529 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 211 treesize of output 194 [2022-07-11 23:04:05,555 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-11 23:04:05,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:05,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:05,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:05,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:05,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:05,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:05,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:05,714 INFO L244 Elim1Store]: Index analysis took 134 ms [2022-07-11 23:04:05,774 INFO L356 Elim1Store]: treesize reduction 200, result has 0.5 percent of original size [2022-07-11 23:04:05,774 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-11 23:04:05,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:05,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:05,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:06,269 INFO L356 Elim1Store]: treesize reduction 115, result has 26.3 percent of original size [2022-07-11 23:04:06,270 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-11 23:04:06,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:06,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:06,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:06,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:06,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:06,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:06,779 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-11 23:04:06,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:06,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:06,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:06,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:06,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:06,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:06,837 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-11 23:04:06,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:06,940 INFO L244 Elim1Store]: Index analysis took 216 ms [2022-07-11 23:04:08,133 INFO L356 Elim1Store]: treesize reduction 1947, result has 7.2 percent of original size [2022-07-11 23:04:08,134 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 28 case distinctions, treesize of input 445 treesize of output 824 [2022-07-11 23:04:10,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:10,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:10,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:10,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:10,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:10,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:10,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:10,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:10,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:10,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:10,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:10,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:10,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:11,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:11,252 INFO L244 Elim1Store]: Index analysis took 715 ms [2022-07-11 23:04:11,260 INFO L356 Elim1Store]: treesize reduction 104, result has 1.0 percent of original size [2022-07-11 23:04:11,261 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 14 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 271 treesize of output 241 [2022-07-11 23:04:11,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:11,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:11,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:11,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:11,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:11,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:11,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:11,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:11,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:11,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:11,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:11,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:11,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:11,862 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-11 23:04:11,968 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-11 23:04:12,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:12,128 INFO L244 Elim1Store]: Index analysis took 505 ms [2022-07-11 23:04:12,135 INFO L356 Elim1Store]: treesize reduction 104, result has 1.0 percent of original size [2022-07-11 23:04:12,135 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 14 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 271 treesize of output 241 [2022-07-11 23:04:13,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:13,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:13,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:13,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:13,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:13,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:13,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:13,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:13,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:13,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:13,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:14,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:14,065 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-11 23:04:14,123 INFO L244 Elim1Store]: Index analysis took 914 ms [2022-07-11 23:04:14,132 INFO L356 Elim1Store]: treesize reduction 154, result has 0.6 percent of original size [2022-07-11 23:04:14,132 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 271 treesize of output 241 [2022-07-11 23:04:14,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:14,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:14,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:14,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:14,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:14,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:14,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:14,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:14,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:14,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:14,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:14,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:14,625 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-11 23:04:14,988 INFO L244 Elim1Store]: Index analysis took 714 ms [2022-07-11 23:04:14,999 INFO L356 Elim1Store]: treesize reduction 208, result has 0.5 percent of original size [2022-07-11 23:04:14,999 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 8 case distinctions, treesize of input 271 treesize of output 241 [2022-07-11 23:04:18,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:18,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:18,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:18,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:18,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:18,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:18,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:18,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:18,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:18,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:18,535 INFO L244 Elim1Store]: Index analysis took 242 ms [2022-07-11 23:04:18,621 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 256 treesize of output 86 [2022-07-11 23:04:18,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:18,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:18,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:18,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:18,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:18,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:18,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:18,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:18,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:18,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:18,968 INFO L244 Elim1Store]: Index analysis took 187 ms [2022-07-11 23:04:19,031 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 226 treesize of output 67 [2022-07-11 23:04:20,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:20,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:20,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:20,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:20,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:20,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:20,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:20,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:20,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:20,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:20,305 INFO L244 Elim1Store]: Index analysis took 178 ms [2022-07-11 23:04:20,370 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 226 treesize of output 67 [2022-07-11 23:04:36,614 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1260 treesize of output 1140 [2022-07-11 23:04:37,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:37,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:37,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:37,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:37,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:37,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:37,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:37,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:37,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:37,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:37,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:37,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:37,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:37,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:37,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:37,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:37,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:37,391 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-11 23:04:37,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:37,399 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-11 23:04:37,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:37,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:37,421 INFO L244 Elim1Store]: Index analysis took 116 ms [2022-07-11 23:06:20,577 WARN L233 SmtUtils]: Spent 1.72m on a formula simplification. DAG size of input: 388 DAG size of output: 126 (called from [L 353] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-07-11 23:06:20,579 INFO L356 Elim1Store]: treesize reduction 8494, result has 12.0 percent of original size [2022-07-11 23:06:20,580 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 10 stores, 8 select indices, 8 select index equivalence classes, 10 disjoint index pairs (out of 28 index pairs), introduced 16 new quantified variables, introduced 59 case distinctions, treesize of input 28343 treesize of output 33549 [2022-07-11 23:06:20,766 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-11 23:06:20,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:06:20,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:06:25,281 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-11 23:06:25,282 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 16772 treesize of output 16780 [2022-07-11 23:06:38,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:06:38,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:06:38,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:06:38,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:06:38,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:06:38,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:06:38,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:06:39,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:06:39,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:06:39,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:06:39,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:06:39,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:06:39,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:06:39,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:06:39,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:06:39,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:06:39,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:06:39,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:06:40,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:06:40,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:06:40,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:06:40,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:06:40,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:06:40,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:06:40,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:06:40,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:06:40,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:06:40,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:06:40,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:06:40,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:06:40,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:06:43,717 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-11 23:06:44,394 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-11 23:06:54,645 INFO L244 Elim1Store]: Index analysis took 15007 ms