./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-patterns/array9_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/array9_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 8ae6792b63619c19d32145c9c656ded5ce2ab653945337eaf95cf4eb94965d3b --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-11 23:05:12,033 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-11 23:05:12,034 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-11 23:05:12,063 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-11 23:05:12,063 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-11 23:05:12,064 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-11 23:05:12,065 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-11 23:05:12,066 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-11 23:05:12,067 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-11 23:05:12,068 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-11 23:05:12,068 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-11 23:05:12,069 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-11 23:05:12,069 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-11 23:05:12,070 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-11 23:05:12,071 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-11 23:05:12,071 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-11 23:05:12,072 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-11 23:05:12,072 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-11 23:05:12,073 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-11 23:05:12,074 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-11 23:05:12,075 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-11 23:05:12,076 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-11 23:05:12,076 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-11 23:05:12,077 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-11 23:05:12,078 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-11 23:05:12,079 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-11 23:05:12,080 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-11 23:05:12,080 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-11 23:05:12,080 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-11 23:05:12,081 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-11 23:05:12,081 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-11 23:05:12,081 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-11 23:05:12,082 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-11 23:05:12,082 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-11 23:05:12,083 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-11 23:05:12,083 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-11 23:05:12,084 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-11 23:05:12,084 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-11 23:05:12,084 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-11 23:05:12,084 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-11 23:05:12,085 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-11 23:05:12,085 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-11 23:05:12,094 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-11 23:05:12,113 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-11 23:05:12,113 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-11 23:05:12,113 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-11 23:05:12,113 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-11 23:05:12,114 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-11 23:05:12,114 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-11 23:05:12,114 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-11 23:05:12,115 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-11 23:05:12,115 INFO L138 SettingsManager]: * Use SBE=true [2022-07-11 23:05:12,115 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-11 23:05:12,116 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-11 23:05:12,116 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-11 23:05:12,116 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-11 23:05:12,116 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-11 23:05:12,116 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-11 23:05:12,116 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-11 23:05:12,116 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-11 23:05:12,117 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-11 23:05:12,117 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-11 23:05:12,117 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-11 23:05:12,117 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-11 23:05:12,117 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-11 23:05:12,117 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-11 23:05:12,117 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-11 23:05:12,117 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-11 23:05:12,118 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-11 23:05:12,118 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-11 23:05:12,118 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-11 23:05:12,118 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-11 23:05:12,118 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-11 23:05:12,118 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-11 23:05:12,119 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-11 23:05:12,119 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-11 23:05:12,119 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8ae6792b63619c19d32145c9c656ded5ce2ab653945337eaf95cf4eb94965d3b [2022-07-11 23:05:12,320 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-11 23:05:12,345 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-11 23:05:12,347 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-11 23:05:12,347 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-11 23:05:12,348 INFO L275 PluginConnector]: CDTParser initialized [2022-07-11 23:05:12,349 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-patterns/array9_pattern.c [2022-07-11 23:05:12,392 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/817c4379a/dbbb82903c2f4eccb6f0ccb714cabbf7/FLAGfe79aed2f [2022-07-11 23:05:12,739 INFO L306 CDTParser]: Found 1 translation units. [2022-07-11 23:05:12,740 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array9_pattern.c [2022-07-11 23:05:12,744 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/817c4379a/dbbb82903c2f4eccb6f0ccb714cabbf7/FLAGfe79aed2f [2022-07-11 23:05:12,753 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/817c4379a/dbbb82903c2f4eccb6f0ccb714cabbf7 [2022-07-11 23:05:12,754 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-11 23:05:12,755 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-11 23:05:12,757 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-11 23:05:12,757 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-11 23:05:12,764 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-11 23:05:12,765 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.07 11:05:12" (1/1) ... [2022-07-11 23:05:12,765 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@734903a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:05:12, skipping insertion in model container [2022-07-11 23:05:12,765 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.07 11:05:12" (1/1) ... [2022-07-11 23:05:12,769 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-11 23:05:12,783 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-11 23:05:12,858 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/array9_pattern.c[1352,1365] [2022-07-11 23:05:12,875 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-11 23:05:12,880 INFO L203 MainTranslator]: Completed pre-run [2022-07-11 23:05:12,890 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/array9_pattern.c[1352,1365] [2022-07-11 23:05:12,908 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-11 23:05:12,923 INFO L208 MainTranslator]: Completed translation [2022-07-11 23:05:12,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:05:12 WrapperNode [2022-07-11 23:05:12,923 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-11 23:05:12,924 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-11 23:05:12,924 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-11 23:05:12,924 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-11 23:05:12,928 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:05:12" (1/1) ... [2022-07-11 23:05:12,933 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:05:12" (1/1) ... [2022-07-11 23:05:12,945 INFO L137 Inliner]: procedures = 16, calls = 23, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 83 [2022-07-11 23:05:12,946 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-11 23:05:12,947 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-11 23:05:12,947 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-11 23:05:12,947 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-11 23:05:12,952 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:05:12" (1/1) ... [2022-07-11 23:05:12,952 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:05:12" (1/1) ... [2022-07-11 23:05:12,955 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:05:12" (1/1) ... [2022-07-11 23:05:12,955 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:05:12" (1/1) ... [2022-07-11 23:05:12,961 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:05:12" (1/1) ... [2022-07-11 23:05:12,969 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:05:12" (1/1) ... [2022-07-11 23:05:12,970 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:05:12" (1/1) ... [2022-07-11 23:05:12,971 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-11 23:05:12,972 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-11 23:05:12,972 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-11 23:05:12,972 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-11 23:05:12,972 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:05:12" (1/1) ... [2022-07-11 23:05:12,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-11 23:05:12,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 23:05:13,002 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 23:05:13,003 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 23:05:13,026 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-11 23:05:13,027 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-11 23:05:13,027 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-11 23:05:13,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-11 23:05:13,027 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-11 23:05:13,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-11 23:05:13,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-11 23:05:13,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-11 23:05:13,028 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-11 23:05:13,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-11 23:05:13,078 INFO L234 CfgBuilder]: Building ICFG [2022-07-11 23:05:13,079 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-11 23:05:13,181 INFO L275 CfgBuilder]: Performing block encoding [2022-07-11 23:05:13,185 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-11 23:05:13,185 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-07-11 23:05:13,187 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.07 11:05:13 BoogieIcfgContainer [2022-07-11 23:05:13,187 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-11 23:05:13,188 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-11 23:05:13,188 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-11 23:05:13,190 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-11 23:05:13,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.07 11:05:12" (1/3) ... [2022-07-11 23:05:13,191 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@441872dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.07 11:05:13, skipping insertion in model container [2022-07-11 23:05:13,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:05:12" (2/3) ... [2022-07-11 23:05:13,191 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@441872dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.07 11:05:13, skipping insertion in model container [2022-07-11 23:05:13,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.07 11:05:13" (3/3) ... [2022-07-11 23:05:13,192 INFO L111 eAbstractionObserver]: Analyzing ICFG array9_pattern.c [2022-07-11 23:05:13,201 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-11 23:05:13,201 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-11 23:05:13,230 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-11 23:05:13,235 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@674febc1, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@446941c8 [2022-07-11 23:05:13,235 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-11 23:05:13,238 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 24 states have internal predecessors, (34), 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 23:05:13,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-11 23:05:13,243 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:05:13,244 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:05:13,244 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:05:13,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:05:13,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1127586545, now seen corresponding path program 1 times [2022-07-11 23:05:13,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:05:13,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196155207] [2022-07-11 23:05:13,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:05:13,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:05:13,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:05:13,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-11 23:05:13,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:05:13,409 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 23:05:13,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:05:13,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196155207] [2022-07-11 23:05:13,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196155207] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:05:13,412 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:05:13,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-11 23:05:13,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475937326] [2022-07-11 23:05:13,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:05:13,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-11 23:05:13,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:05:13,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-11 23:05:13,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-11 23:05:13,448 INFO L87 Difference]: Start difference. First operand has 28 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 24 states have internal predecessors, (34), 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 7.0) internal successors, (14), 2 states have internal predecessors, (14), 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 23:05:13,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:05:13,464 INFO L93 Difference]: Finished difference Result 53 states and 74 transitions. [2022-07-11 23:05:13,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-11 23:05:13,466 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 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 16 [2022-07-11 23:05:13,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:05:13,479 INFO L225 Difference]: With dead ends: 53 [2022-07-11 23:05:13,479 INFO L226 Difference]: Without dead ends: 24 [2022-07-11 23:05:13,482 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 23:05:13,486 INFO L413 NwaCegarLoop]: 32 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, 32 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 23:05:13,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-11 23:05:13,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-07-11 23:05:13,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-07-11 23:05:13,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 20 states have (on average 1.2) internal successors, (24), 20 states have internal predecessors, (24), 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 23:05:13,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2022-07-11 23:05:13,516 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 16 [2022-07-11 23:05:13,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:05:13,516 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2022-07-11 23:05:13,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 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 23:05:13,517 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2022-07-11 23:05:13,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-07-11 23:05:13,518 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:05:13,519 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] [2022-07-11 23:05:13,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-11 23:05:13,520 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:05:13,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:05:13,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1008571545, now seen corresponding path program 1 times [2022-07-11 23:05:13,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:05:13,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181244993] [2022-07-11 23:05:13,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:05:13,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:05:13,548 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-11 23:05:13,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1720545591] [2022-07-11 23:05:13,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:05:13,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 23:05:13,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 23:05:13,551 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 23:05:13,552 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 23:05:13,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:05:13,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-11 23:05:13,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 23:05:13,694 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:05:13,695 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-11 23:05:13,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:05:13,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181244993] [2022-07-11 23:05:13,695 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-11 23:05:13,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1720545591] [2022-07-11 23:05:13,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1720545591] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:05:13,696 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:05:13,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-11 23:05:13,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561729962] [2022-07-11 23:05:13,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:05:13,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-11 23:05:13,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:05:13,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-11 23:05:13,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-11 23:05:13,698 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 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 23:05:13,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:05:13,782 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2022-07-11 23:05:13,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-11 23:05:13,784 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 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 25 [2022-07-11 23:05:13,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:05:13,785 INFO L225 Difference]: With dead ends: 50 [2022-07-11 23:05:13,786 INFO L226 Difference]: Without dead ends: 32 [2022-07-11 23:05:13,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-07-11 23:05:13,788 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 26 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-11 23:05:13,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 60 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-11 23:05:13,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-07-11 23:05:13,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2022-07-11 23:05:13,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 25 states have (on average 1.16) internal successors, (29), 25 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-11 23:05:13,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2022-07-11 23:05:13,804 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 25 [2022-07-11 23:05:13,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:05:13,804 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2022-07-11 23:05:13,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 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 23:05:13,805 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2022-07-11 23:05:13,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-07-11 23:05:13,805 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:05:13,806 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, 1, 1, 1] [2022-07-11 23:05:13,825 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-11 23:05:14,021 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 23:05:14,022 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:05:14,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:05:14,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1890411897, now seen corresponding path program 1 times [2022-07-11 23:05:14,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:05:14,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343000072] [2022-07-11 23:05:14,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:05:14,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:05:14,050 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-11 23:05:14,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [713971848] [2022-07-11 23:05:14,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:05:14,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 23:05:14,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 23:05:14,052 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 23:05:14,053 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 23:05:14,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:05:14,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 39 conjunts are in the unsatisfiable core [2022-07-11 23:05:14,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 23:05:14,153 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 23:05:14,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:05:14,195 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 18 [2022-07-11 23:05:14,200 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 23:05:14,483 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-07-11 23:05:14,576 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-11 23:05:14,577 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 32 [2022-07-11 23:05:14,710 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-11 23:05:14,711 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 32 treesize of output 12 [2022-07-11 23:05:14,770 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 23:05:14,770 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-11 23:05:15,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:05:15,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343000072] [2022-07-11 23:05:15,332 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-11 23:05:15,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [713971848] [2022-07-11 23:05:15,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [713971848] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-11 23:05:15,332 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-11 23:05:15,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2022-07-11 23:05:15,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015321838] [2022-07-11 23:05:15,333 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-11 23:05:15,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-11 23:05:15,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:05:15,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-11 23:05:15,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=415, Unknown=0, NotChecked=0, Total=506 [2022-07-11 23:05:15,334 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 17 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 15 states have internal predecessors, (25), 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 23:05:15,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:05:15,567 INFO L93 Difference]: Finished difference Result 70 states and 80 transitions. [2022-07-11 23:05:15,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-11 23:05:15,567 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 15 states have internal predecessors, (25), 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 29 [2022-07-11 23:05:15,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:05:15,569 INFO L225 Difference]: With dead ends: 70 [2022-07-11 23:05:15,569 INFO L226 Difference]: Without dead ends: 50 [2022-07-11 23:05:15,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=161, Invalid=595, Unknown=0, NotChecked=0, Total=756 [2022-07-11 23:05:15,570 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 30 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 38 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-11 23:05:15,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 148 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 85 Invalid, 0 Unknown, 38 Unchecked, 0.1s Time] [2022-07-11 23:05:15,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-07-11 23:05:15,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 46. [2022-07-11 23:05:15,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 39 states have (on average 1.1538461538461537) internal successors, (45), 39 states have internal predecessors, (45), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-11 23:05:15,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 51 transitions. [2022-07-11 23:05:15,583 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 51 transitions. Word has length 29 [2022-07-11 23:05:15,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:05:15,583 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 51 transitions. [2022-07-11 23:05:15,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 15 states have internal predecessors, (25), 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 23:05:15,584 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 51 transitions. [2022-07-11 23:05:15,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-07-11 23:05:15,584 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:05:15,584 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, 1, 1, 1] [2022-07-11 23:05:15,602 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 23:05:15,799 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 23:05:15,800 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:05:15,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:05:15,800 INFO L85 PathProgramCache]: Analyzing trace with hash -32099493, now seen corresponding path program 2 times [2022-07-11 23:05:15,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:05:15,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75129316] [2022-07-11 23:05:15,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:05:15,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:05:15,817 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-11 23:05:15,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1077965965] [2022-07-11 23:05:15,820 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-11 23:05:15,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 23:05:15,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 23:05:15,822 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 23:05:15,823 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 23:05:15,863 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-11 23:05:15,863 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-11 23:05:15,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-11 23:05:15,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 23:05:15,901 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 23:05:15,902 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-11 23:05:15,927 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 23:05:15,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:05:15,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75129316] [2022-07-11 23:05:15,928 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-11 23:05:15,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1077965965] [2022-07-11 23:05:15,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1077965965] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-11 23:05:15,928 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-11 23:05:15,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-07-11 23:05:15,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309533727] [2022-07-11 23:05:15,929 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-11 23:05:15,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-11 23:05:15,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:05:15,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-11 23:05:15,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-07-11 23:05:15,930 INFO L87 Difference]: Start difference. First operand 46 states and 51 transitions. Second operand has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 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 23:05:16,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:05:16,009 INFO L93 Difference]: Finished difference Result 61 states and 66 transitions. [2022-07-11 23:05:16,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-11 23:05:16,010 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 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 31 [2022-07-11 23:05:16,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:05:16,011 INFO L225 Difference]: With dead ends: 61 [2022-07-11 23:05:16,012 INFO L226 Difference]: Without dead ends: 40 [2022-07-11 23:05:16,012 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-07-11 23:05:16,013 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 46 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-11 23:05:16,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 110 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-11 23:05:16,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-07-11 23:05:16,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 32. [2022-07-11 23:05:16,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 27 states have internal predecessors, (31), 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 23:05:16,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2022-07-11 23:05:16,016 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 31 [2022-07-11 23:05:16,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:05:16,017 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2022-07-11 23:05:16,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 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 23:05:16,017 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2022-07-11 23:05:16,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-07-11 23:05:16,017 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:05:16,018 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, 1, 1, 1] [2022-07-11 23:05:16,036 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 23:05:16,232 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 23:05:16,233 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:05:16,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:05:16,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1857874167, now seen corresponding path program 3 times [2022-07-11 23:05:16,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:05:16,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55870041] [2022-07-11 23:05:16,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:05:16,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:05:16,252 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-11 23:05:16,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1987715159] [2022-07-11 23:05:16,252 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-11 23:05:16,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 23:05:16,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 23:05:16,254 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 23:05:16,255 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 23:05:16,320 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-07-11 23:05:16,320 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-11 23:05:16,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-11 23:05:16,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 23:05:16,368 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 23:05:16,368 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-11 23:05:16,398 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 23:05:16,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:05:16,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55870041] [2022-07-11 23:05:16,398 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-11 23:05:16,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1987715159] [2022-07-11 23:05:16,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1987715159] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-11 23:05:16,399 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-11 23:05:16,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-07-11 23:05:16,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940126097] [2022-07-11 23:05:16,399 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-11 23:05:16,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-11 23:05:16,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:05:16,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-11 23:05:16,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-07-11 23:05:16,401 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 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 23:05:16,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:05:16,474 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2022-07-11 23:05:16,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-11 23:05:16,475 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 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 31 [2022-07-11 23:05:16,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:05:16,476 INFO L225 Difference]: With dead ends: 39 [2022-07-11 23:05:16,476 INFO L226 Difference]: Without dead ends: 35 [2022-07-11 23:05:16,476 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2022-07-11 23:05:16,479 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 35 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-11 23:05:16,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 91 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-11 23:05:16,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-07-11 23:05:16,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2022-07-11 23:05:16,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 29 states have (on average 1.1379310344827587) internal successors, (33), 29 states have internal predecessors, (33), 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 23:05:16,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2022-07-11 23:05:16,488 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 31 [2022-07-11 23:05:16,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:05:16,488 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2022-07-11 23:05:16,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 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 23:05:16,489 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2022-07-11 23:05:16,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-07-11 23:05:16,491 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:05:16,491 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:05:16,523 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-07-11 23:05:16,703 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 23:05:16,703 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:05:16,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:05:16,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1236086951, now seen corresponding path program 4 times [2022-07-11 23:05:16,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:05:16,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382733504] [2022-07-11 23:05:16,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:05:16,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:05:16,731 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-11 23:05:16,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1172947356] [2022-07-11 23:05:16,731 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-11 23:05:16,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 23:05:16,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 23:05:16,733 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 23:05:16,734 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 23:05:16,796 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-11 23:05:16,796 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-11 23:05:16,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 56 conjunts are in the unsatisfiable core [2022-07-11 23:05:16,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 23:05:16,812 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 23:05:16,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:05:16,829 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 18 [2022-07-11 23:05:16,832 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 23:05:16,874 INFO L356 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-07-11 23:05:16,875 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 33 [2022-07-11 23:05:17,201 INFO L356 Elim1Store]: treesize reduction 35, result has 30.0 percent of original size [2022-07-11 23:05:17,201 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 2 case distinctions, treesize of input 41 treesize of output 52 [2022-07-11 23:05:18,552 INFO L356 Elim1Store]: treesize reduction 108, result has 10.7 percent of original size [2022-07-11 23:05:18,552 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 63 treesize of output 59 [2022-07-11 23:05:18,836 INFO L356 Elim1Store]: treesize reduction 174, result has 7.0 percent of original size [2022-07-11 23:05:18,837 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 12 case distinctions, treesize of input 82 treesize of output 32 [2022-07-11 23:05:18,937 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 23:05:18,937 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-11 23:05:28,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:05:28,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382733504] [2022-07-11 23:05:28,291 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-11 23:05:28,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172947356] [2022-07-11 23:05:28,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1172947356] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-11 23:05:28,291 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-11 23:05:28,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2022-07-11 23:05:28,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104627264] [2022-07-11 23:05:28,291 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-11 23:05:28,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-11 23:05:28,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:05:28,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-11 23:05:28,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=927, Unknown=5, NotChecked=0, Total=1122 [2022-07-11 23:05:28,292 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand has 23 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 21 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-11 23:05:28,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:05:28,659 INFO L93 Difference]: Finished difference Result 61 states and 68 transitions. [2022-07-11 23:05:28,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-11 23:05:28,660 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 21 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 33 [2022-07-11 23:05:28,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:05:28,661 INFO L225 Difference]: With dead ends: 61 [2022-07-11 23:05:28,661 INFO L226 Difference]: Without dead ends: 57 [2022-07-11 23:05:28,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 416 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=257, Invalid=1144, Unknown=5, NotChecked=0, Total=1406 [2022-07-11 23:05:28,662 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 22 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 71 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-11 23:05:28,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 222 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 136 Invalid, 0 Unknown, 71 Unchecked, 0.1s Time] [2022-07-11 23:05:28,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-07-11 23:05:28,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 50. [2022-07-11 23:05:28,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 43 states have (on average 1.1627906976744187) internal successors, (50), 43 states have internal predecessors, (50), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-11 23:05:28,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 56 transitions. [2022-07-11 23:05:28,667 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 56 transitions. Word has length 33 [2022-07-11 23:05:28,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:05:28,668 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 56 transitions. [2022-07-11 23:05:28,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 21 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-11 23:05:28,668 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 56 transitions. [2022-07-11 23:05:28,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-07-11 23:05:28,668 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:05:28,669 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:05:28,687 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 23:05:28,892 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 23:05:28,893 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:05:28,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:05:28,893 INFO L85 PathProgramCache]: Analyzing trace with hash -977921513, now seen corresponding path program 1 times [2022-07-11 23:05:28,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:05:28,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111228815] [2022-07-11 23:05:28,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:05:28,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:05:28,921 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-11 23:05:28,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [955716441] [2022-07-11 23:05:28,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:05:28,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 23:05:28,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 23:05:28,925 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 23:05:28,926 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 23:05:29,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:05:29,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 61 conjunts are in the unsatisfiable core [2022-07-11 23:05:29,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 23:05:29,014 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 23:05:29,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:05:29,051 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 23:05:29,058 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 23:05:29,064 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 23:05:29,068 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 23:05:29,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:05:29,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:05:29,134 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 23:05:29,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:05:29,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:05:29,525 INFO L356 Elim1Store]: treesize reduction 42, result has 40.8 percent of original size [2022-07-11 23:05:29,526 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 2 case distinctions, treesize of input 48 treesize of output 68 [2022-07-11 23:05:30,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:05:30,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:05:30,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:05:30,696 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-11 23:05:30,697 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 56 treesize of output 55 [2022-07-11 23:05:33,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:05:33,314 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-11 23:05:33,315 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 22 [2022-07-11 23:05:33,379 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 23:05:33,379 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-11 23:05:40,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:05:40,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111228815] [2022-07-11 23:05:40,846 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-11 23:05:40,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [955716441] [2022-07-11 23:05:40,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [955716441] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-11 23:05:40,846 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-11 23:05:40,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2022-07-11 23:05:40,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614437383] [2022-07-11 23:05:40,847 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-11 23:05:40,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-11 23:05:40,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:05:40,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-11 23:05:40,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=719, Unknown=6, NotChecked=0, Total=870 [2022-07-11 23:05:40,848 INFO L87 Difference]: Start difference. First operand 50 states and 56 transitions. Second operand has 21 states, 21 states have (on average 1.380952380952381) internal successors, (29), 19 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-11 23:05:42,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:05:42,996 INFO L93 Difference]: Finished difference Result 65 states and 73 transitions. [2022-07-11 23:05:42,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-11 23:05:42,997 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.380952380952381) internal successors, (29), 19 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 33 [2022-07-11 23:05:42,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:05:42,999 INFO L225 Difference]: With dead ends: 65 [2022-07-11 23:05:42,999 INFO L226 Difference]: Without dead ends: 61 [2022-07-11 23:05:42,999 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 13.1s TimeCoverageRelationStatistics Valid=194, Invalid=919, Unknown=9, NotChecked=0, Total=1122 [2022-07-11 23:05:43,000 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 17 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 109 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-11 23:05:43,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 238 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 142 Invalid, 0 Unknown, 109 Unchecked, 0.1s Time] [2022-07-11 23:05:43,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-07-11 23:05:43,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 50. [2022-07-11 23:05:43,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 43 states have (on average 1.1627906976744187) internal successors, (50), 43 states have internal predecessors, (50), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-11 23:05:43,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 56 transitions. [2022-07-11 23:05:43,006 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 56 transitions. Word has length 33 [2022-07-11 23:05:43,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:05:43,006 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 56 transitions. [2022-07-11 23:05:43,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.380952380952381) internal successors, (29), 19 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-11 23:05:43,006 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 56 transitions. [2022-07-11 23:05:43,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-07-11 23:05:43,007 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:05:43,007 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, 1, 1, 1] [2022-07-11 23:05:43,023 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 23:05:43,223 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 23:05:43,224 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:05:43,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:05:43,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1879614779, now seen corresponding path program 5 times [2022-07-11 23:05:43,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:05:43,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413184873] [2022-07-11 23:05:43,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:05:43,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:05:43,237 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-11 23:05:43,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1422006285] [2022-07-11 23:05:43,238 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-11 23:05:43,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 23:05:43,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 23:05:43,239 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 23:05:43,243 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 23:05:43,304 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-07-11 23:05:43,304 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-11 23:05:43,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-11 23:05:43,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 23:05:43,357 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 23:05:43,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-11 23:05:43,396 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 23:05:43,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:05:43,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413184873] [2022-07-11 23:05:43,397 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-11 23:05:43,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1422006285] [2022-07-11 23:05:43,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1422006285] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-11 23:05:43,397 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-11 23:05:43,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2022-07-11 23:05:43,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609191107] [2022-07-11 23:05:43,398 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-11 23:05:43,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-11 23:05:43,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:05:43,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-11 23:05:43,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-07-11 23:05:43,399 INFO L87 Difference]: Start difference. First operand 50 states and 56 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 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 23:05:43,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:05:43,491 INFO L93 Difference]: Finished difference Result 87 states and 95 transitions. [2022-07-11 23:05:43,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-11 23:05:43,504 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 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 35 [2022-07-11 23:05:43,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:05:43,505 INFO L225 Difference]: With dead ends: 87 [2022-07-11 23:05:43,505 INFO L226 Difference]: Without dead ends: 75 [2022-07-11 23:05:43,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2022-07-11 23:05:43,507 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 80 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-11 23:05:43,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 117 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-11 23:05:43,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-07-11 23:05:43,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 63. [2022-07-11 23:05:43,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 54 states have (on average 1.1481481481481481) internal successors, (62), 54 states have internal predecessors, (62), 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 23:05:43,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 70 transitions. [2022-07-11 23:05:43,523 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 70 transitions. Word has length 35 [2022-07-11 23:05:43,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:05:43,524 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 70 transitions. [2022-07-11 23:05:43,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 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 23:05:43,524 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 70 transitions. [2022-07-11 23:05:43,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-07-11 23:05:43,525 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:05:43,526 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, 1, 1, 1] [2022-07-11 23:05:43,543 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 23:05:43,739 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 23:05:43,740 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:05:43,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:05:43,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1373135831, now seen corresponding path program 6 times [2022-07-11 23:05:43,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:05:43,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672004914] [2022-07-11 23:05:43,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:05:43,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:05:43,760 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-11 23:05:43,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1500300506] [2022-07-11 23:05:43,767 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-07-11 23:05:43,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 23:05:43,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 23:05:43,768 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 23:05:43,770 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 23:05:43,846 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-07-11 23:05:43,846 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-11 23:05:43,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-11 23:05:43,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 23:05:43,904 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 23:05:43,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-11 23:05:43,940 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 23:05:43,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:05:43,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672004914] [2022-07-11 23:05:43,941 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-11 23:05:43,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1500300506] [2022-07-11 23:05:43,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1500300506] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-11 23:05:43,941 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-11 23:05:43,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2022-07-11 23:05:43,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807008309] [2022-07-11 23:05:43,941 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-11 23:05:43,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-11 23:05:43,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:05:43,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-11 23:05:43,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-07-11 23:05:43,942 INFO L87 Difference]: Start difference. First operand 63 states and 70 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 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 23:05:44,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:05:44,072 INFO L93 Difference]: Finished difference Result 74 states and 80 transitions. [2022-07-11 23:05:44,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-11 23:05:44,073 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 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 35 [2022-07-11 23:05:44,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:05:44,073 INFO L225 Difference]: With dead ends: 74 [2022-07-11 23:05:44,073 INFO L226 Difference]: Without dead ends: 70 [2022-07-11 23:05:44,073 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2022-07-11 23:05:44,074 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 76 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-11 23:05:44,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 110 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-11 23:05:44,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-07-11 23:05:44,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 65. [2022-07-11 23:05:44,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 56 states have (on average 1.1428571428571428) internal successors, (64), 56 states have internal predecessors, (64), 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 23:05:44,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 72 transitions. [2022-07-11 23:05:44,080 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 72 transitions. Word has length 35 [2022-07-11 23:05:44,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:05:44,080 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 72 transitions. [2022-07-11 23:05:44,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 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 23:05:44,081 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 72 transitions. [2022-07-11 23:05:44,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-07-11 23:05:44,081 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:05:44,081 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, 1, 1, 1] [2022-07-11 23:05:44,098 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 23:05:44,291 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 23:05:44,291 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:05:44,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:05:44,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1081807417, now seen corresponding path program 7 times [2022-07-11 23:05:44,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:05:44,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264209018] [2022-07-11 23:05:44,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:05:44,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:05:44,302 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-11 23:05:44,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [184539901] [2022-07-11 23:05:44,303 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-07-11 23:05:44,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 23:05:44,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 23:05:44,304 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 23:05:44,306 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 23:05:44,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:05:44,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 65 conjunts are in the unsatisfiable core [2022-07-11 23:05:44,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 23:05:44,384 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 23:05:44,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:05:44,399 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 23:05:44,403 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 23:05:44,416 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2022-07-11 23:05:44,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:05:44,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:05:44,477 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 23:05:44,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:05:44,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:05:44,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:05:44,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:05:44,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:05:44,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:05:44,563 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 66 treesize of output 63 [2022-07-11 23:05:44,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:05:44,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:05:44,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:05:44,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:05:44,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:05:44,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:05:44,901 INFO L356 Elim1Store]: treesize reduction 66, result has 40.0 percent of original size [2022-07-11 23:05:44,902 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 3 case distinctions, treesize of input 66 treesize of output 98 [2022-07-11 23:05:45,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:05:45,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:05:45,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:05:45,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:05:45,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:05:45,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:05:45,132 INFO L356 Elim1Store]: treesize reduction 164, result has 13.7 percent of original size [2022-07-11 23:05:45,132 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 7 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 9 case distinctions, treesize of input 103 treesize of output 112 [2022-07-11 23:05:45,749 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 117 treesize of output 49 [2022-07-11 23:05:45,811 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:05:45,812 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-11 23:05:48,241 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_421 Int) (|ULTIMATE.start_main_~index~0#1| Int)) (or (<= (let ((.cse0 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base|) (+ (* 4 |ULTIMATE.start_main_~index~0#1|) |c_ULTIMATE.start_main_~#array1~0#1.offset|) v_ArrVal_421))) (let ((.cse1 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| .cse0) |c_ULTIMATE.start_main_~#array2~0#1.base|))) (+ (select .cse0 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 4)) (select .cse0 |c_ULTIMATE.start_main_~#array1~0#1.offset|) (select .cse1 |c_ULTIMATE.start_main_~#array2~0#1.offset|) |c_ULTIMATE.start_main_~sum~0#1| (select .cse0 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 8)) (select .cse1 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 4)) (select .cse1 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 8))))) (div (+ c_~ARR_SIZE~0 2) 3)) (not (<= v_ArrVal_421 (* |c_ULTIMATE.start_main_~count~0#1| |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|))))) is different from false [2022-07-11 23:05:48,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:05:48,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264209018] [2022-07-11 23:05:48,265 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-11 23:05:48,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184539901] [2022-07-11 23:05:48,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [184539901] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-11 23:05:48,265 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-11 23:05:48,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2022-07-11 23:05:48,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879325944] [2022-07-11 23:05:48,266 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-11 23:05:48,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-11 23:05:48,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:05:48,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-11 23:05:48,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=653, Unknown=1, NotChecked=52, Total=812 [2022-07-11 23:05:48,267 INFO L87 Difference]: Start difference. First operand 65 states and 72 transitions. Second operand has 20 states, 20 states have (on average 1.65) internal successors, (33), 20 states have internal predecessors, (33), 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 23:05:48,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:05:48,824 INFO L93 Difference]: Finished difference Result 92 states and 102 transitions. [2022-07-11 23:05:48,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-11 23:05:48,824 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.65) internal successors, (33), 20 states have internal predecessors, (33), 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 37 [2022-07-11 23:05:48,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:05:48,825 INFO L225 Difference]: With dead ends: 92 [2022-07-11 23:05:48,825 INFO L226 Difference]: Without dead ends: 88 [2022-07-11 23:05:48,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 22 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=148, Invalid=847, Unknown=1, NotChecked=60, Total=1056 [2022-07-11 23:05:48,826 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 34 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 36 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-11 23:05:48,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 214 Invalid, 388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 330 Invalid, 0 Unknown, 36 Unchecked, 0.3s Time] [2022-07-11 23:05:48,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-07-11 23:05:48,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 78. [2022-07-11 23:05:48,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 67 states have (on average 1.1492537313432836) internal successors, (77), 67 states have internal predecessors, (77), 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 23:05:48,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 87 transitions. [2022-07-11 23:05:48,835 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 87 transitions. Word has length 37 [2022-07-11 23:05:48,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:05:48,835 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 87 transitions. [2022-07-11 23:05:48,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.65) internal successors, (33), 20 states have internal predecessors, (33), 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 23:05:48,835 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 87 transitions. [2022-07-11 23:05:48,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-07-11 23:05:48,836 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:05:48,836 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, 1, 1, 1] [2022-07-11 23:05:48,853 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 23:05:49,043 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 23:05:49,044 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:05:49,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:05:49,044 INFO L85 PathProgramCache]: Analyzing trace with hash 70690167, now seen corresponding path program 2 times [2022-07-11 23:05:49,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:05:49,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428590974] [2022-07-11 23:05:49,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:05:49,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:05:49,060 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-11 23:05:49,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2126935407] [2022-07-11 23:05:49,060 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-11 23:05:49,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 23:05:49,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 23:05:49,062 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 23:05:49,067 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 23:05:49,131 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-11 23:05:49,131 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-11 23:05:49,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 72 conjunts are in the unsatisfiable core [2022-07-11 23:05:49,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 23:05:49,139 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 23:05:49,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:05:49,166 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 23:05:49,170 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 23:05:49,173 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2022-07-11 23:05:49,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:05:49,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:05:49,227 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 23:05:49,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:05:49,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:05:49,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:05:49,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:05:49,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:05:49,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:05:49,324 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 23:05:49,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:05:49,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:05:49,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:05:49,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:05:49,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:05:49,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:05:49,872 INFO L356 Elim1Store]: treesize reduction 66, result has 40.0 percent of original size [2022-07-11 23:05:49,872 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 3 case distinctions, treesize of input 66 treesize of output 98 [2022-07-11 23:05:51,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:05:51,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:05:51,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:05:51,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:05:51,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:05:51,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:05:51,255 INFO L356 Elim1Store]: treesize reduction 106, result has 29.3 percent of original size [2022-07-11 23:05:51,255 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 7 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 95 treesize of output 130 [2022-07-11 23:05:52,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:05:52,618 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-11 23:05:52,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:05:52,619 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 4 disjoint index pairs (out of 28 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 155 treesize of output 67 [2022-07-11 23:05:52,758 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:05:52,759 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-11 23:05:53,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:05:53,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428590974] [2022-07-11 23:05:53,622 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-11 23:05:53,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2126935407] [2022-07-11 23:05:53,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2126935407] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-11 23:05:53,623 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-11 23:05:53,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2022-07-11 23:05:53,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247855924] [2022-07-11 23:05:53,623 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-11 23:05:53,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-11 23:05:53,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:05:53,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-11 23:05:53,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=1317, Unknown=3, NotChecked=0, Total=1560 [2022-07-11 23:05:53,625 INFO L87 Difference]: Start difference. First operand 78 states and 87 transitions. Second operand has 27 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 25 states have internal predecessors, (33), 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 23:05:55,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:05:55,209 INFO L93 Difference]: Finished difference Result 119 states and 136 transitions. [2022-07-11 23:05:55,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-07-11 23:05:55,210 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 25 states have internal predecessors, (33), 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 37 [2022-07-11 23:05:55,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:05:55,210 INFO L225 Difference]: With dead ends: 119 [2022-07-11 23:05:55,210 INFO L226 Difference]: Without dead ends: 115 [2022-07-11 23:05:55,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 579 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=303, Invalid=1673, Unknown=4, NotChecked=0, Total=1980 [2022-07-11 23:05:55,211 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 31 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 608 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 52 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-11 23:05:55,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 374 Invalid, 685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 608 Invalid, 0 Unknown, 52 Unchecked, 0.6s Time] [2022-07-11 23:05:55,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2022-07-11 23:05:55,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 89. [2022-07-11 23:05:55,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 76 states have (on average 1.1578947368421053) internal successors, (88), 76 states have internal predecessors, (88), 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 23:05:55,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 100 transitions. [2022-07-11 23:05:55,222 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 100 transitions. Word has length 37 [2022-07-11 23:05:55,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:05:55,223 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 100 transitions. [2022-07-11 23:05:55,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 25 states have internal predecessors, (33), 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 23:05:55,223 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 100 transitions. [2022-07-11 23:05:55,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-07-11 23:05:55,223 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:05:55,223 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:05:55,242 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-11 23:05:55,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-11 23:05:55,432 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:05:55,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:05:55,432 INFO L85 PathProgramCache]: Analyzing trace with hash 288075803, now seen corresponding path program 8 times [2022-07-11 23:05:55,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:05:55,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467453016] [2022-07-11 23:05:55,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:05:55,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:05:55,447 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-11 23:05:55,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2081913723] [2022-07-11 23:05:55,449 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-11 23:05:55,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 23:05:55,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 23:05:55,450 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-11 23:05:55,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-11 23:05:55,513 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-11 23:05:55,513 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-11 23:05:55,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-11 23:05:55,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 23:05:55,590 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 20 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:05:55,591 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-11 23:05:55,645 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-11 23:05:55,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:05:55,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467453016] [2022-07-11 23:05:55,646 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-11 23:05:55,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2081913723] [2022-07-11 23:05:55,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2081913723] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-11 23:05:55,646 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-11 23:05:55,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 15 [2022-07-11 23:05:55,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329037247] [2022-07-11 23:05:55,646 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-11 23:05:55,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-11 23:05:55,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:05:55,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-11 23:05:55,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2022-07-11 23:05:55,647 INFO L87 Difference]: Start difference. First operand 89 states and 100 transitions. Second operand has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 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 23:05:55,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:05:55,822 INFO L93 Difference]: Finished difference Result 144 states and 157 transitions. [2022-07-11 23:05:55,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-11 23:05:55,823 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 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 39 [2022-07-11 23:05:55,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:05:55,824 INFO L225 Difference]: With dead ends: 144 [2022-07-11 23:05:55,824 INFO L226 Difference]: Without dead ends: 130 [2022-07-11 23:05:55,824 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=158, Invalid=394, Unknown=0, NotChecked=0, Total=552 [2022-07-11 23:05:55,824 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 145 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-11 23:05:55,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 141 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-11 23:05:55,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2022-07-11 23:05:55,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 104. [2022-07-11 23:05:55,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 89 states have (on average 1.1573033707865168) internal successors, (103), 89 states have internal predecessors, (103), 7 states have call successors, (7), 7 states have call predecessors, (7), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-07-11 23:05:55,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 117 transitions. [2022-07-11 23:05:55,836 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 117 transitions. Word has length 39 [2022-07-11 23:05:55,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:05:55,836 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 117 transitions. [2022-07-11 23:05:55,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 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 23:05:55,836 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 117 transitions. [2022-07-11 23:05:55,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-07-11 23:05:55,837 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:05:55,837 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:05:55,853 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-11 23:05:56,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-07-11 23:05:56,053 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:05:56,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:05:56,053 INFO L85 PathProgramCache]: Analyzing trace with hash -2118006027, now seen corresponding path program 3 times [2022-07-11 23:05:56,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:05:56,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499807689] [2022-07-11 23:05:56,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:05:56,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:05:56,067 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-11 23:05:56,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1073473330] [2022-07-11 23:05:56,068 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-11 23:05:56,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 23:05:56,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 23:05:56,070 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-11 23:05:56,070 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-11 23:05:56,187 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-07-11 23:05:56,187 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-11 23:05:56,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-11 23:05:56,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 23:05:56,258 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 13 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:05:56,258 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-11 23:05:56,327 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-11 23:05:56,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:05:56,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499807689] [2022-07-11 23:05:56,328 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-11 23:05:56,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1073473330] [2022-07-11 23:05:56,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1073473330] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-11 23:05:56,328 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-11 23:05:56,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 15 [2022-07-11 23:05:56,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400016640] [2022-07-11 23:05:56,328 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-11 23:05:56,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-11 23:05:56,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:05:56,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-11 23:05:56,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2022-07-11 23:05:56,329 INFO L87 Difference]: Start difference. First operand 104 states and 117 transitions. Second operand has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 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 23:05:56,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:05:56,489 INFO L93 Difference]: Finished difference Result 129 states and 140 transitions. [2022-07-11 23:05:56,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-11 23:05:56,490 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 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 39 [2022-07-11 23:05:56,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:05:56,491 INFO L225 Difference]: With dead ends: 129 [2022-07-11 23:05:56,491 INFO L226 Difference]: Without dead ends: 125 [2022-07-11 23:05:56,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=149, Invalid=403, Unknown=0, NotChecked=0, Total=552 [2022-07-11 23:05:56,492 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 81 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-11 23:05:56,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 103 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-11 23:05:56,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2022-07-11 23:05:56,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 93. [2022-07-11 23:05:56,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 80 states have (on average 1.15) internal successors, (92), 80 states have internal predecessors, (92), 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 23:05:56,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 104 transitions. [2022-07-11 23:05:56,502 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 104 transitions. Word has length 39 [2022-07-11 23:05:56,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:05:56,502 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 104 transitions. [2022-07-11 23:05:56,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 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 23:05:56,502 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 104 transitions. [2022-07-11 23:05:56,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-11 23:05:56,503 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:05:56,503 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:05:56,522 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-11 23:05:56,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-11 23:05:56,704 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:05:56,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:05:56,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1485008409, now seen corresponding path program 9 times [2022-07-11 23:05:56,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:05:56,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636547991] [2022-07-11 23:05:56,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:05:56,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:05:56,714 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-11 23:05:56,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [356492676] [2022-07-11 23:05:56,715 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-11 23:05:56,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 23:05:56,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 23:05:56,716 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-11 23:05:56,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-11 23:05:56,841 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-07-11 23:05:56,841 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-11 23:05:56,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 87 conjunts are in the unsatisfiable core [2022-07-11 23:05:56,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 23:05:56,854 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 23:05:56,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:05:56,877 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 23:05:56,881 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 23:05:56,883 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2022-07-11 23:05:56,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:05:56,928 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 38 treesize of output 37 [2022-07-11 23:05:56,930 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 31 treesize of output 29 [2022-07-11 23:05:56,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:05:56,936 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 20 [2022-07-11 23:05:56,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:05:56,941 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 20 [2022-07-11 23:05:56,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:05:56,989 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 60 treesize of output 55 [2022-07-11 23:05:56,993 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 44 treesize of output 40 [2022-07-11 23:05:56,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:05:57,017 INFO L356 Elim1Store]: treesize reduction 42, result has 40.8 percent of original size [2022-07-11 23:05:57,017 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 2 case distinctions, treesize of input 25 treesize of output 46 [2022-07-11 23:05:57,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:05:57,056 INFO L356 Elim1Store]: treesize reduction 48, result has 32.4 percent of original size [2022-07-11 23:05:57,057 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 2 case distinctions, treesize of input 25 treesize of output 40 [2022-07-11 23:05:57,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:05:57,203 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 92 treesize of output 83 [2022-07-11 23:05:57,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:05:57,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:05:57,239 INFO L356 Elim1Store]: treesize reduction 70, result has 29.3 percent of original size [2022-07-11 23:05:57,239 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 35 treesize of output 61 [2022-07-11 23:05:57,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:05:57,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:05:57,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:05:57,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:05:57,272 INFO L356 Elim1Store]: treesize reduction 130, result has 15.0 percent of original size [2022-07-11 23:05:57,273 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 5 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 8 case distinctions, treesize of input 103 treesize of output 126 [2022-07-11 23:06:03,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:06:03,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:06:03,741 INFO L356 Elim1Store]: treesize reduction 201, result has 35.4 percent of original size [2022-07-11 23:06:03,741 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 3 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 14 case distinctions, treesize of input 143 treesize of output 213 [2022-07-11 23:06:09,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:06:09,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:06:09,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:06:09,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:06:09,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:06:09,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:06:09,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:06:09,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:06:09,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:06:09,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:06:09,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:06:09,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:06:09,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:06:09,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:06:09,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:06:09,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:06:09,600 INFO L356 Elim1Store]: treesize reduction 1060, result has 4.8 percent of original size [2022-07-11 23:06:09,600 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 18 select indices, 18 select index equivalence classes, 17 disjoint index pairs (out of 153 index pairs), introduced 18 new quantified variables, introduced 61 case distinctions, treesize of input 423 treesize of output 364 [2022-07-11 23:06:26,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:06:26,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:06:26,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:06:27,289 INFO L356 Elim1Store]: treesize reduction 484, result has 55.7 percent of original size [2022-07-11 23:06:27,290 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 21 select indices, 21 select index equivalence classes, 7 disjoint index pairs (out of 210 index pairs), introduced 21 new quantified variables, introduced 88 case distinctions, treesize of input 320 treesize of output 750