./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-patterns/array15_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/array15_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 511c1484167d1d7d90ff27dae8a1569edd7c5a72fd917e4f05baeab770e0fcd4 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-11 22:56:45,958 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-11 22:56:45,982 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-11 22:56:46,016 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-11 22:56:46,016 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-11 22:56:46,017 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-11 22:56:46,018 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-11 22:56:46,020 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-11 22:56:46,021 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-11 22:56:46,024 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-11 22:56:46,025 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-11 22:56:46,026 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-11 22:56:46,027 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-11 22:56:46,028 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-11 22:56:46,029 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-11 22:56:46,031 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-11 22:56:46,032 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-11 22:56:46,033 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-11 22:56:46,034 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-11 22:56:46,037 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-11 22:56:46,038 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-11 22:56:46,039 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-11 22:56:46,040 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-11 22:56:46,041 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-11 22:56:46,042 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-11 22:56:46,047 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-11 22:56:46,047 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-11 22:56:46,047 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-11 22:56:46,048 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-11 22:56:46,048 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-11 22:56:46,049 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-11 22:56:46,049 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-11 22:56:46,051 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-11 22:56:46,051 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-11 22:56:46,052 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-11 22:56:46,053 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-11 22:56:46,053 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-11 22:56:46,054 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-11 22:56:46,054 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-11 22:56:46,054 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-11 22:56:46,055 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-11 22:56:46,056 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-11 22:56:46,057 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-11 22:56:46,080 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-11 22:56:46,081 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-11 22:56:46,081 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-11 22:56:46,081 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-11 22:56:46,082 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-11 22:56:46,082 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-11 22:56:46,082 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-11 22:56:46,082 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-11 22:56:46,083 INFO L138 SettingsManager]: * Use SBE=true [2022-07-11 22:56:46,083 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-11 22:56:46,083 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-11 22:56:46,084 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-11 22:56:46,084 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-11 22:56:46,084 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-11 22:56:46,084 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-11 22:56:46,084 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-11 22:56:46,084 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-11 22:56:46,084 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-11 22:56:46,085 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-11 22:56:46,085 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-11 22:56:46,086 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-11 22:56:46,086 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-11 22:56:46,086 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-11 22:56:46,086 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-11 22:56:46,086 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-11 22:56:46,086 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-11 22:56:46,087 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-11 22:56:46,087 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-11 22:56:46,087 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-11 22:56:46,087 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-11 22:56:46,087 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-11 22:56:46,087 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-11 22:56:46,088 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-11 22:56:46,088 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 511c1484167d1d7d90ff27dae8a1569edd7c5a72fd917e4f05baeab770e0fcd4 [2022-07-11 22:56:46,276 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-11 22:56:46,296 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-11 22:56:46,298 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-11 22:56:46,299 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-11 22:56:46,314 INFO L275 PluginConnector]: CDTParser initialized [2022-07-11 22:56:46,315 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-patterns/array15_pattern.c [2022-07-11 22:56:46,356 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/073e083bf/e87fc9888c6b49a2b74ec5025957e628/FLAGde9bde097 [2022-07-11 22:56:46,719 INFO L306 CDTParser]: Found 1 translation units. [2022-07-11 22:56:46,720 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array15_pattern.c [2022-07-11 22:56:46,726 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/073e083bf/e87fc9888c6b49a2b74ec5025957e628/FLAGde9bde097 [2022-07-11 22:56:47,148 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/073e083bf/e87fc9888c6b49a2b74ec5025957e628 [2022-07-11 22:56:47,150 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-11 22:56:47,151 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-11 22:56:47,153 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-11 22:56:47,153 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-11 22:56:47,155 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-11 22:56:47,155 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.07 10:56:47" (1/1) ... [2022-07-11 22:56:47,156 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51ac052b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 10:56:47, skipping insertion in model container [2022-07-11 22:56:47,156 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.07 10:56:47" (1/1) ... [2022-07-11 22:56:47,161 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-11 22:56:47,170 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-11 22:56:47,262 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/array15_pattern.c[1424,1437] [2022-07-11 22:56:47,284 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-11 22:56:47,288 INFO L203 MainTranslator]: Completed pre-run [2022-07-11 22:56:47,295 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/array15_pattern.c[1424,1437] [2022-07-11 22:56:47,301 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-11 22:56:47,309 INFO L208 MainTranslator]: Completed translation [2022-07-11 22:56:47,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 10:56:47 WrapperNode [2022-07-11 22:56:47,310 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-11 22:56:47,311 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-11 22:56:47,311 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-11 22:56:47,311 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-11 22:56:47,315 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 10:56:47" (1/1) ... [2022-07-11 22:56:47,319 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 10:56:47" (1/1) ... [2022-07-11 22:56:47,330 INFO L137 Inliner]: procedures = 16, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 96 [2022-07-11 22:56:47,330 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-11 22:56:47,331 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-11 22:56:47,331 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-11 22:56:47,331 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-11 22:56:47,336 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 10:56:47" (1/1) ... [2022-07-11 22:56:47,336 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 10:56:47" (1/1) ... [2022-07-11 22:56:47,337 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 10:56:47" (1/1) ... [2022-07-11 22:56:47,337 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 10:56:47" (1/1) ... [2022-07-11 22:56:47,340 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 10:56:47" (1/1) ... [2022-07-11 22:56:47,343 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 10:56:47" (1/1) ... [2022-07-11 22:56:47,343 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 10:56:47" (1/1) ... [2022-07-11 22:56:47,345 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-11 22:56:47,345 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-11 22:56:47,345 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-11 22:56:47,345 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-11 22:56:47,346 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 10:56:47" (1/1) ... [2022-07-11 22:56:47,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-11 22:56:47,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 22:56:47,370 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 22:56:47,376 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 22:56:47,406 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-11 22:56:47,406 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-11 22:56:47,407 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-11 22:56:47,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-11 22:56:47,407 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-11 22:56:47,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-11 22:56:47,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-11 22:56:47,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-11 22:56:47,410 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-11 22:56:47,410 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-11 22:56:47,460 INFO L234 CfgBuilder]: Building ICFG [2022-07-11 22:56:47,461 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-11 22:56:47,648 INFO L275 CfgBuilder]: Performing block encoding [2022-07-11 22:56:47,652 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-11 22:56:47,652 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2022-07-11 22:56:47,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.07 10:56:47 BoogieIcfgContainer [2022-07-11 22:56:47,654 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-11 22:56:47,655 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-11 22:56:47,655 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-11 22:56:47,657 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-11 22:56:47,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.07 10:56:47" (1/3) ... [2022-07-11 22:56:47,658 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@745e0bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.07 10:56:47, skipping insertion in model container [2022-07-11 22:56:47,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 10:56:47" (2/3) ... [2022-07-11 22:56:47,658 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@745e0bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.07 10:56:47, skipping insertion in model container [2022-07-11 22:56:47,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.07 10:56:47" (3/3) ... [2022-07-11 22:56:47,659 INFO L111 eAbstractionObserver]: Analyzing ICFG array15_pattern.c [2022-07-11 22:56:47,667 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-11 22:56:47,667 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-11 22:56:47,695 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-11 22:56:47,700 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@2e554dc1, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@216e8aad [2022-07-11 22:56:47,700 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-11 22:56:47,703 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 26 states have (on average 1.5769230769230769) internal successors, (41), 27 states have internal predecessors, (41), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-11 22:56:47,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-11 22:56:47,723 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 22:56:47,724 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 22:56:47,724 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 22:56:47,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 22:56:47,728 INFO L85 PathProgramCache]: Analyzing trace with hash 179087049, now seen corresponding path program 1 times [2022-07-11 22:56:47,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 22:56:47,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233166665] [2022-07-11 22:56:47,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 22:56:47,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 22:56:47,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:56:47,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-11 22:56:47,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:56:47,877 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 22:56:47,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 22:56:47,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233166665] [2022-07-11 22:56:47,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233166665] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 22:56:47,878 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 22:56:47,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-11 22:56:47,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212532355] [2022-07-11 22:56:47,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 22:56:47,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-11 22:56:47,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 22:56:47,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-11 22:56:47,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-11 22:56:47,910 INFO L87 Difference]: Start difference. First operand has 32 states, 26 states have (on average 1.5769230769230769) internal successors, (41), 27 states have internal predecessors, (41), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-11 22:56:47,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 22:56:47,926 INFO L93 Difference]: Finished difference Result 61 states and 93 transitions. [2022-07-11 22:56:47,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-11 22:56:47,928 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-07-11 22:56:47,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 22:56:47,933 INFO L225 Difference]: With dead ends: 61 [2022-07-11 22:56:47,933 INFO L226 Difference]: Without dead ends: 28 [2022-07-11 22:56:47,936 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 22:56:47,939 INFO L413 NwaCegarLoop]: 39 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, 39 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 22:56:47,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-11 22:56:47,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-07-11 22:56:47,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2022-07-11 22:56:47,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 23 states have internal predecessors, (29), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-11 22:56:47,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2022-07-11 22:56:47,995 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 15 [2022-07-11 22:56:47,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 22:56:47,996 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2022-07-11 22:56:47,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-11 22:56:47,997 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2022-07-11 22:56:47,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-07-11 22:56:47,998 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 22:56:47,998 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 22:56:47,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-11 22:56:47,999 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 22:56:47,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 22:56:47,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1195633489, now seen corresponding path program 1 times [2022-07-11 22:56:47,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 22:56:48,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517346354] [2022-07-11 22:56:48,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 22:56:48,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 22:56:48,012 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-11 22:56:48,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1307966479] [2022-07-11 22:56:48,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 22:56:48,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 22:56:48,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 22:56:48,032 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 22:56:48,045 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 22:56:48,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:56:48,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-11 22:56:48,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 22:56:48,141 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-11 22:56:48,142 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-11 22:56:48,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 22:56:48,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517346354] [2022-07-11 22:56:48,142 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-11 22:56:48,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1307966479] [2022-07-11 22:56:48,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1307966479] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 22:56:48,143 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 22:56:48,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-11 22:56:48,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4783669] [2022-07-11 22:56:48,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 22:56:48,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-11 22:56:48,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 22:56:48,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-11 22:56:48,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-11 22:56:48,145 INFO L87 Difference]: Start difference. First operand 28 states and 35 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 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 22:56:48,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 22:56:48,224 INFO L93 Difference]: Finished difference Result 60 states and 74 transitions. [2022-07-11 22:56:48,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-11 22:56:48,224 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 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 29 [2022-07-11 22:56:48,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 22:56:48,225 INFO L225 Difference]: With dead ends: 60 [2022-07-11 22:56:48,225 INFO L226 Difference]: Without dead ends: 40 [2022-07-11 22:56:48,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 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 22:56:48,226 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 47 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-11 22:56:48,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 53 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-11 22:56:48,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-07-11 22:56:48,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 34. [2022-07-11 22:56:48,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 28 states have internal predecessors, (34), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-11 22:56:48,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2022-07-11 22:56:48,233 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 29 [2022-07-11 22:56:48,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 22:56:48,233 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2022-07-11 22:56:48,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 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 22:56:48,234 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2022-07-11 22:56:48,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-07-11 22:56:48,234 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 22:56:48,235 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 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 22:56:48,252 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-11 22:56:48,451 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 22:56:48,452 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 22:56:48,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 22:56:48,452 INFO L85 PathProgramCache]: Analyzing trace with hash -712222617, now seen corresponding path program 1 times [2022-07-11 22:56:48,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 22:56:48,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168726192] [2022-07-11 22:56:48,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 22:56:48,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 22:56:48,466 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-11 22:56:48,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [335115999] [2022-07-11 22:56:48,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 22:56:48,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 22:56:48,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 22:56:48,471 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 22:56:48,481 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 22:56:48,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:56:48,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-11 22:56:48,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 22:56:48,547 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-11 22:56:48,547 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-11 22:56:48,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 22:56:48,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168726192] [2022-07-11 22:56:48,547 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-11 22:56:48,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [335115999] [2022-07-11 22:56:48,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [335115999] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 22:56:48,548 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 22:56:48,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 22:56:48,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827138062] [2022-07-11 22:56:48,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 22:56:48,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 22:56:48,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 22:56:48,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 22:56:48,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 22:56:48,550 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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 22:56:48,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 22:56:48,582 INFO L93 Difference]: Finished difference Result 63 states and 77 transitions. [2022-07-11 22:56:48,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 22:56:48,583 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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 22:56:48,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 22:56:48,583 INFO L225 Difference]: With dead ends: 63 [2022-07-11 22:56:48,583 INFO L226 Difference]: Without dead ends: 38 [2022-07-11 22:56:48,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-11 22:56:48,585 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 24 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-11 22:56:48,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 49 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-11 22:56:48,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-07-11 22:56:48,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2022-07-11 22:56:48,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 30 states have (on average 1.2) internal successors, (36), 30 states have internal predecessors, (36), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-11 22:56:48,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2022-07-11 22:56:48,589 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 35 [2022-07-11 22:56:48,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 22:56:48,590 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2022-07-11 22:56:48,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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 22:56:48,590 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2022-07-11 22:56:48,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-07-11 22:56:48,591 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 22:56:48,591 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 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 22:56:48,612 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 22:56:48,804 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 22:56:48,805 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 22:56:48,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 22:56:48,805 INFO L85 PathProgramCache]: Analyzing trace with hash -459431893, now seen corresponding path program 1 times [2022-07-11 22:56:48,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 22:56:48,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174149200] [2022-07-11 22:56:48,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 22:56:48,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 22:56:48,815 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-11 22:56:48,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [432587907] [2022-07-11 22:56:48,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 22:56:48,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 22:56:48,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 22:56:48,828 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 22:56:48,831 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 22:56:48,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:56:48,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-11 22:56:48,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 22:56:49,090 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-11 22:56:49,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-11 22:56:49,327 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-11 22:56:49,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 22:56:49,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174149200] [2022-07-11 22:56:49,327 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-11 22:56:49,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [432587907] [2022-07-11 22:56:49,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [432587907] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-11 22:56:49,328 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-11 22:56:49,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 20 [2022-07-11 22:56:49,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806306194] [2022-07-11 22:56:49,328 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-11 22:56:49,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-11 22:56:49,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 22:56:49,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-11 22:56:49,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-07-11 22:56:49,330 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand has 20 states, 18 states have (on average 2.2777777777777777) internal successors, (41), 15 states have internal predecessors, (41), 4 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-07-11 22:56:49,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 22:56:49,654 INFO L93 Difference]: Finished difference Result 107 states and 126 transitions. [2022-07-11 22:56:49,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-11 22:56:49,655 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 2.2777777777777777) internal successors, (41), 15 states have internal predecessors, (41), 4 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) Word has length 39 [2022-07-11 22:56:49,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 22:56:49,658 INFO L225 Difference]: With dead ends: 107 [2022-07-11 22:56:49,658 INFO L226 Difference]: Without dead ends: 85 [2022-07-11 22:56:49,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=183, Invalid=747, Unknown=0, NotChecked=0, Total=930 [2022-07-11 22:56:49,659 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 113 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-11 22:56:49,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 163 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 359 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-11 22:56:49,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-07-11 22:56:49,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 60. [2022-07-11 22:56:49,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 49 states have (on average 1.2040816326530612) internal successors, (59), 50 states have internal predecessors, (59), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-11 22:56:49,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 71 transitions. [2022-07-11 22:56:49,667 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 71 transitions. Word has length 39 [2022-07-11 22:56:49,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 22:56:49,667 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 71 transitions. [2022-07-11 22:56:49,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 2.2777777777777777) internal successors, (41), 15 states have internal predecessors, (41), 4 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-07-11 22:56:49,673 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 71 transitions. [2022-07-11 22:56:49,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-07-11 22:56:49,675 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 22:56:49,676 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 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 22:56:49,697 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-07-11 22:56:49,898 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 22:56:49,899 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 22:56:49,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 22:56:49,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1046237907, now seen corresponding path program 1 times [2022-07-11 22:56:49,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 22:56:49,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448303464] [2022-07-11 22:56:49,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 22:56:49,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 22:56:49,911 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-11 22:56:49,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [551992323] [2022-07-11 22:56:49,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 22:56:49,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 22:56:49,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 22:56:49,917 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 22:56:49,918 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 22:56:49,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:56:49,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 25 conjunts are in the unsatisfiable core [2022-07-11 22:56:49,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 22:56:50,023 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 32 [2022-07-11 22:56:50,026 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 30 [2022-07-11 22:56:50,171 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 109 [2022-07-11 22:56:50,220 INFO L356 Elim1Store]: treesize reduction 265, result has 22.3 percent of original size [2022-07-11 22:56:50,221 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 108 treesize of output 218 [2022-07-11 22:56:50,321 INFO L356 Elim1Store]: treesize reduction 140, result has 0.7 percent of original size [2022-07-11 22:56:50,322 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 216 treesize of output 56 [2022-07-11 22:56:50,333 INFO L356 Elim1Store]: treesize reduction 92, result has 1.1 percent of original size [2022-07-11 22:56:50,333 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 126 treesize of output 37 [2022-07-11 22:56:50,446 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 28 [2022-07-11 22:56:50,495 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-11 22:56:50,495 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-11 22:56:50,708 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2022-07-11 22:56:50,713 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-11 22:56:50,713 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 1 case distinctions, treesize of input 20 treesize of output 19 [2022-07-11 22:56:50,718 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2022-07-11 22:56:50,724 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-11 22:56:50,724 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 1 case distinctions, treesize of input 18 treesize of output 17 [2022-07-11 22:56:50,747 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-11 22:56:50,749 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 103 [2022-07-11 22:56:51,100 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-11 22:56:51,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 22:56:51,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448303464] [2022-07-11 22:56:51,100 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-11 22:56:51,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [551992323] [2022-07-11 22:56:51,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [551992323] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-11 22:56:51,101 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-11 22:56:51,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 17 [2022-07-11 22:56:51,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535420346] [2022-07-11 22:56:51,101 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-11 22:56:51,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-11 22:56:51,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 22:56:51,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-11 22:56:51,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2022-07-11 22:56:51,102 INFO L87 Difference]: Start difference. First operand 60 states and 71 transitions. Second operand has 17 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 17 states have internal predecessors, (49), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-07-11 22:56:51,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 22:56:51,734 INFO L93 Difference]: Finished difference Result 92 states and 109 transitions. [2022-07-11 22:56:51,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-11 22:56:51,735 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 17 states have internal predecessors, (49), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 39 [2022-07-11 22:56:51,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 22:56:51,736 INFO L225 Difference]: With dead ends: 92 [2022-07-11 22:56:51,736 INFO L226 Difference]: Without dead ends: 88 [2022-07-11 22:56:51,736 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 54 SyntacticMatches, 7 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=104, Invalid=316, Unknown=0, NotChecked=0, Total=420 [2022-07-11 22:56:51,737 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 34 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 25 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-11 22:56:51,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 218 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 276 Invalid, 0 Unknown, 25 Unchecked, 0.5s Time] [2022-07-11 22:56:51,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-07-11 22:56:51,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 77. [2022-07-11 22:56:51,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 63 states have (on average 1.2063492063492063) internal successors, (76), 64 states have internal predecessors, (76), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-11 22:56:51,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 92 transitions. [2022-07-11 22:56:51,745 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 92 transitions. Word has length 39 [2022-07-11 22:56:51,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 22:56:51,746 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 92 transitions. [2022-07-11 22:56:51,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 17 states have internal predecessors, (49), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-07-11 22:56:51,746 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 92 transitions. [2022-07-11 22:56:51,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-11 22:56:51,747 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 22:56:51,747 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1] [2022-07-11 22:56:51,793 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-11 22:56:51,973 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 22:56:51,973 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 22:56:51,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 22:56:51,974 INFO L85 PathProgramCache]: Analyzing trace with hash -252023569, now seen corresponding path program 2 times [2022-07-11 22:56:51,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 22:56:51,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844012416] [2022-07-11 22:56:51,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 22:56:51,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 22:56:51,986 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-11 22:56:51,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [221082246] [2022-07-11 22:56:51,989 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-11 22:56:51,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 22:56:51,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 22:56:51,991 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 22:56:51,992 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 22:56:52,038 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-11 22:56:52,038 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-11 22:56:52,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-11 22:56:52,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 22:56:52,084 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-11 22:56:52,085 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-11 22:56:52,113 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-11 22:56:52,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 22:56:52,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844012416] [2022-07-11 22:56:52,113 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-11 22:56:52,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221082246] [2022-07-11 22:56:52,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [221082246] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-11 22:56:52,113 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-11 22:56:52,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-07-11 22:56:52,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553535717] [2022-07-11 22:56:52,114 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-11 22:56:52,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-11 22:56:52,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 22:56:52,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-11 22:56:52,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-07-11 22:56:52,115 INFO L87 Difference]: Start difference. First operand 77 states and 92 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-11 22:56:52,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 22:56:52,223 INFO L93 Difference]: Finished difference Result 155 states and 184 transitions. [2022-07-11 22:56:52,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-11 22:56:52,224 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 41 [2022-07-11 22:56:52,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 22:56:52,225 INFO L225 Difference]: With dead ends: 155 [2022-07-11 22:56:52,225 INFO L226 Difference]: Without dead ends: 117 [2022-07-11 22:56:52,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 73 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 22:56:52,228 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 140 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-11 22:56:52,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 101 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-11 22:56:52,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2022-07-11 22:56:52,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 90. [2022-07-11 22:56:52,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 76 states have (on average 1.1842105263157894) internal successors, (90), 77 states have internal predecessors, (90), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-11 22:56:52,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 106 transitions. [2022-07-11 22:56:52,245 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 106 transitions. Word has length 41 [2022-07-11 22:56:52,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 22:56:52,246 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 106 transitions. [2022-07-11 22:56:52,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-11 22:56:52,247 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 106 transitions. [2022-07-11 22:56:52,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-11 22:56:52,249 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 22:56:52,249 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1] [2022-07-11 22:56:52,265 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-07-11 22:56:52,455 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 22:56:52,456 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 22:56:52,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 22:56:52,456 INFO L85 PathProgramCache]: Analyzing trace with hash 796161581, now seen corresponding path program 2 times [2022-07-11 22:56:52,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 22:56:52,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876352579] [2022-07-11 22:56:52,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 22:56:52,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 22:56:52,463 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-11 22:56:52,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1901473782] [2022-07-11 22:56:52,463 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-11 22:56:52,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 22:56:52,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 22:56:52,483 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 22:56:52,484 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 22:56:52,523 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-11 22:56:52,523 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-11 22:56:52,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-11 22:56:52,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 22:56:52,563 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-11 22:56:52,564 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-11 22:56:52,599 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-11 22:56:52,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 22:56:52,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876352579] [2022-07-11 22:56:52,600 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-11 22:56:52,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1901473782] [2022-07-11 22:56:52,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1901473782] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-11 22:56:52,600 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-11 22:56:52,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-07-11 22:56:52,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763783843] [2022-07-11 22:56:52,601 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-11 22:56:52,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-11 22:56:52,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 22:56:52,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-11 22:56:52,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-07-11 22:56:52,602 INFO L87 Difference]: Start difference. First operand 90 states and 106 transitions. Second operand has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 11 states have internal predecessors, (40), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-11 22:56:52,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 22:56:52,722 INFO L93 Difference]: Finished difference Result 167 states and 203 transitions. [2022-07-11 22:56:52,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-11 22:56:52,723 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 11 states have internal predecessors, (40), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 41 [2022-07-11 22:56:52,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 22:56:52,723 INFO L225 Difference]: With dead ends: 167 [2022-07-11 22:56:52,723 INFO L226 Difference]: Without dead ends: 120 [2022-07-11 22:56:52,724 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2022-07-11 22:56:52,724 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 46 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-11 22:56:52,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 91 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-11 22:56:52,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2022-07-11 22:56:52,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 104. [2022-07-11 22:56:52,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 90 states have (on average 1.2) internal successors, (108), 91 states have internal predecessors, (108), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-11 22:56:52,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 124 transitions. [2022-07-11 22:56:52,736 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 124 transitions. Word has length 41 [2022-07-11 22:56:52,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 22:56:52,736 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 124 transitions. [2022-07-11 22:56:52,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 11 states have internal predecessors, (40), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-11 22:56:52,736 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 124 transitions. [2022-07-11 22:56:52,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-07-11 22:56:52,737 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 22:56:52,737 INFO L195 NwaCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1] [2022-07-11 22:56:52,753 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-07-11 22:56:52,951 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 22:56:52,951 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 22:56:52,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 22:56:52,951 INFO L85 PathProgramCache]: Analyzing trace with hash 178867369, now seen corresponding path program 3 times [2022-07-11 22:56:52,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 22:56:52,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979469082] [2022-07-11 22:56:52,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 22:56:52,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 22:56:52,959 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-11 22:56:52,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [646924832] [2022-07-11 22:56:52,959 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-11 22:56:52,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 22:56:52,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 22:56:52,960 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 22:56:52,961 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 22:56:53,009 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-07-11 22:56:53,009 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-11 22:56:53,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-11 22:56:53,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 22:56:53,037 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-11 22:56:53,037 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-11 22:56:53,082 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-11 22:56:53,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 22:56:53,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979469082] [2022-07-11 22:56:53,083 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-11 22:56:53,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646924832] [2022-07-11 22:56:53,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [646924832] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-11 22:56:53,083 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-11 22:56:53,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2022-07-11 22:56:53,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907722592] [2022-07-11 22:56:53,083 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-11 22:56:53,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-11 22:56:53,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 22:56:53,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-11 22:56:53,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-07-11 22:56:53,085 INFO L87 Difference]: Start difference. First operand 104 states and 124 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-11 22:56:53,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 22:56:53,174 INFO L93 Difference]: Finished difference Result 144 states and 167 transitions. [2022-07-11 22:56:53,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-11 22:56:53,175 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 44 [2022-07-11 22:56:53,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 22:56:53,175 INFO L225 Difference]: With dead ends: 144 [2022-07-11 22:56:53,175 INFO L226 Difference]: Without dead ends: 74 [2022-07-11 22:56:53,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2022-07-11 22:56:53,176 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 44 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-11 22:56:53,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 85 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-11 22:56:53,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-07-11 22:56:53,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 72. [2022-07-11 22:56:53,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 63 states have (on average 1.1746031746031746) internal successors, (74), 63 states have internal predecessors, (74), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-07-11 22:56:53,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 84 transitions. [2022-07-11 22:56:53,183 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 84 transitions. Word has length 44 [2022-07-11 22:56:53,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 22:56:53,183 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 84 transitions. [2022-07-11 22:56:53,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-11 22:56:53,183 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 84 transitions. [2022-07-11 22:56:53,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-07-11 22:56:53,184 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 22:56:53,184 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1] [2022-07-11 22:56:53,203 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 22:56:53,399 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 22:56:53,399 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 22:56:53,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 22:56:53,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1693722629, now seen corresponding path program 3 times [2022-07-11 22:56:53,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 22:56:53,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537750191] [2022-07-11 22:56:53,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 22:56:53,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 22:56:53,410 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-11 22:56:53,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1862301461] [2022-07-11 22:56:53,412 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-11 22:56:53,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 22:56:53,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 22:56:53,413 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 22:56:53,417 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 22:56:53,464 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-07-11 22:56:53,464 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-11 22:56:53,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-11 22:56:53,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 22:56:53,571 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-07-11 22:56:53,572 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-11 22:56:53,783 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-07-11 22:56:53,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 22:56:53,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537750191] [2022-07-11 22:56:53,784 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-11 22:56:53,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1862301461] [2022-07-11 22:56:53,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1862301461] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-11 22:56:53,784 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-11 22:56:53,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 22 [2022-07-11 22:56:53,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495849343] [2022-07-11 22:56:53,785 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-11 22:56:53,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-11 22:56:53,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 22:56:53,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-11 22:56:53,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2022-07-11 22:56:53,786 INFO L87 Difference]: Start difference. First operand 72 states and 84 transitions. Second operand has 22 states, 20 states have (on average 2.4) internal successors, (48), 17 states have internal predecessors, (48), 3 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2022-07-11 22:56:54,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 22:56:54,159 INFO L93 Difference]: Finished difference Result 98 states and 112 transitions. [2022-07-11 22:56:54,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-11 22:56:54,159 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 2.4) internal successors, (48), 17 states have internal predecessors, (48), 3 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) Word has length 48 [2022-07-11 22:56:54,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 22:56:54,160 INFO L225 Difference]: With dead ends: 98 [2022-07-11 22:56:54,160 INFO L226 Difference]: Without dead ends: 92 [2022-07-11 22:56:54,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 73 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=318, Invalid=1014, Unknown=0, NotChecked=0, Total=1332 [2022-07-11 22:56:54,161 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 207 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-11 22:56:54,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 132 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-11 22:56:54,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2022-07-11 22:56:54,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 54. [2022-07-11 22:56:54,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 48 states have (on average 1.1666666666666667) internal successors, (56), 48 states have internal predecessors, (56), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-11 22:56:54,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 62 transitions. [2022-07-11 22:56:54,167 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 62 transitions. Word has length 48 [2022-07-11 22:56:54,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 22:56:54,167 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 62 transitions. [2022-07-11 22:56:54,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 2.4) internal successors, (48), 17 states have internal predecessors, (48), 3 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2022-07-11 22:56:54,167 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 62 transitions. [2022-07-11 22:56:54,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-07-11 22:56:54,168 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 22:56:54,168 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 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, 1] [2022-07-11 22:56:54,185 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 22:56:54,384 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 22:56:54,385 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 22:56:54,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 22:56:54,386 INFO L85 PathProgramCache]: Analyzing trace with hash 11450257, now seen corresponding path program 4 times [2022-07-11 22:56:54,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 22:56:54,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795929992] [2022-07-11 22:56:54,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 22:56:54,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 22:56:54,393 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-11 22:56:54,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [709247019] [2022-07-11 22:56:54,393 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-11 22:56:54,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 22:56:54,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 22:56:54,395 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 22:56:54,399 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 22:56:54,593 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-11 22:56:54,593 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-11 22:56:54,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 55 conjunts are in the unsatisfiable core [2022-07-11 22:56:54,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 22:56:54,636 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 56 [2022-07-11 22:56:54,638 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 120 [2022-07-11 22:56:54,667 INFO L356 Elim1Store]: treesize reduction 63, result has 1.6 percent of original size [2022-07-11 22:56:54,667 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 119 treesize of output 22 [2022-07-11 22:56:54,726 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 75 [2022-07-11 22:56:54,740 INFO L356 Elim1Store]: treesize reduction 180, result has 9.5 percent of original size [2022-07-11 22:56:54,740 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 74 treesize of output 142 [2022-07-11 22:56:54,770 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-11 22:56:54,771 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-11 22:56:54,771 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 117 treesize of output 24 [2022-07-11 22:56:54,966 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 100 treesize of output 91 [2022-07-11 22:56:55,000 INFO L356 Elim1Store]: treesize reduction 370, result has 8.9 percent of original size [2022-07-11 22:56:55,000 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 90 treesize of output 161 [2022-07-11 22:56:55,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:56:55,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:56:55,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:56:55,023 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 110 treesize of output 37 [2022-07-11 22:56:55,111 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 69 [2022-07-11 22:56:55,160 INFO L356 Elim1Store]: treesize reduction 279, result has 7.9 percent of original size [2022-07-11 22:56:55,161 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 68 treesize of output 122 [2022-07-11 22:56:55,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:56:55,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:56:55,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:56:55,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:56:55,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:56:55,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:56:55,195 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 95 treesize of output 40 [2022-07-11 22:56:55,698 INFO L356 Elim1Store]: treesize reduction 224, result has 32.9 percent of original size [2022-07-11 22:56:55,699 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 66 treesize of output 140 [2022-07-11 22:56:57,231 INFO L356 Elim1Store]: treesize reduction 1060, result has 1.2 percent of original size [2022-07-11 22:56:57,231 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 278 treesize of output 91 [2022-07-11 22:56:57,326 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 8 proven. 50 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-11 22:56:57,326 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-11 22:57:15,239 WARN L233 SmtUtils]: Spent 11.46s on a formula simplification that was a NOOP. DAG size: 59 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-11 22:57:31,915 WARN L233 SmtUtils]: Spent 9.84s on a formula simplification that was a NOOP. DAG size: 59 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-11 22:57:32,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 22:57:32,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795929992] [2022-07-11 22:57:32,037 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-11 22:57:32,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709247019] [2022-07-11 22:57:32,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [709247019] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-11 22:57:32,038 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-11 22:57:32,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2022-07-11 22:57:32,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345498235] [2022-07-11 22:57:32,038 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-11 22:57:32,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-07-11 22:57:32,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 22:57:32,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-07-11 22:57:32,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=260, Invalid=1456, Unknown=6, NotChecked=0, Total=1722 [2022-07-11 22:57:32,039 INFO L87 Difference]: Start difference. First operand 54 states and 62 transitions. Second operand has 29 states, 29 states have (on average 1.6551724137931034) internal successors, (48), 29 states have internal predecessors, (48), 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 22:57:32,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 22:57:32,817 INFO L93 Difference]: Finished difference Result 129 states and 154 transitions. [2022-07-11 22:57:32,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-11 22:57:32,818 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.6551724137931034) internal successors, (48), 29 states have internal predecessors, (48), 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 57 [2022-07-11 22:57:32,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 22:57:32,819 INFO L225 Difference]: With dead ends: 129 [2022-07-11 22:57:32,819 INFO L226 Difference]: Without dead ends: 125 [2022-07-11 22:57:32,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 37 SyntacticMatches, 4 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 820 ImplicationChecksByTransitivity, 35.8s TimeCoverageRelationStatistics Valid=322, Invalid=1834, Unknown=6, NotChecked=0, Total=2162 [2022-07-11 22:57:32,820 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 83 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 425 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-11 22:57:32,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 219 Invalid, 761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 295 Invalid, 0 Unknown, 425 Unchecked, 0.3s Time] [2022-07-11 22:57:32,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2022-07-11 22:57:32,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 90. [2022-07-11 22:57:32,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 81 states have (on average 1.1851851851851851) internal successors, (96), 81 states have internal predecessors, (96), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-07-11 22:57:32,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 106 transitions. [2022-07-11 22:57:32,839 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 106 transitions. Word has length 57 [2022-07-11 22:57:32,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 22:57:32,839 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 106 transitions. [2022-07-11 22:57:32,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.6551724137931034) internal successors, (48), 29 states have internal predecessors, (48), 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 22:57:32,840 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 106 transitions. [2022-07-11 22:57:32,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-07-11 22:57:32,840 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 22:57:32,840 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 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, 1] [2022-07-11 22:57:32,861 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-07-11 22:57:33,061 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 22:57:33,061 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 22:57:33,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 22:57:33,062 INFO L85 PathProgramCache]: Analyzing trace with hash 230304975, now seen corresponding path program 4 times [2022-07-11 22:57:33,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 22:57:33,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134030770] [2022-07-11 22:57:33,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 22:57:33,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 22:57:33,072 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-11 22:57:33,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2113967078] [2022-07-11 22:57:33,072 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-11 22:57:33,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 22:57:33,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 22:57:33,073 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 22:57:33,076 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 22:57:33,659 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-11 22:57:33,659 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-11 22:57:33,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 63 conjunts are in the unsatisfiable core [2022-07-11 22:57:33,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 22:57:33,704 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 56 [2022-07-11 22:57:33,708 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 19 treesize of output 18 [2022-07-11 22:57:33,713 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 21 treesize of output 20 [2022-07-11 22:57:33,761 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 75 [2022-07-11 22:57:33,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:57:33,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:57:33,765 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-11 22:57:33,765 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 159 [2022-07-11 22:57:33,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:57:33,789 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-11 22:57:33,790 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-11 22:57:33,793 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 132 treesize of output 26 [2022-07-11 22:57:33,980 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 89 [2022-07-11 22:57:33,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:57:33,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:57:33,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:57:33,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:57:33,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:57:33,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:57:33,989 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 192 [2022-07-11 22:57:34,103 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 99 treesize of output 88 [2022-07-11 22:57:34,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:57:34,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:57:34,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:57:34,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:57:34,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:57:34,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:57:34,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:57:34,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:57:34,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:57:34,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:57:34,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:57:34,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:57:34,116 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 145 [2022-07-11 22:57:34,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:57:34,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:57:34,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:57:34,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:57:34,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:57:34,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:57:34,560 INFO L356 Elim1Store]: treesize reduction 288, result has 13.3 percent of original size [2022-07-11 22:57:34,560 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 81 treesize of output 74 [2022-07-11 22:57:35,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:57:35,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:57:35,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:57:35,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:57:35,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:57:35,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:57:35,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:57:35,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:57:35,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:57:35,074 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-11 22:57:35,074 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 83 treesize of output 37 [2022-07-11 22:57:35,128 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 8 proven. 50 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-11 22:57:35,128 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-11 22:57:54,163 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2022-07-11 22:57:54,230 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-11 22:57:54,231 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 1 case distinctions, treesize of input 18 treesize of output 17 [2022-07-11 22:57:54,300 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2022-07-11 22:57:54,493 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-11 22:57:54,493 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 1 case distinctions, treesize of input 20 treesize of output 19 [2022-07-11 22:57:55,451 INFO L356 Elim1Store]: treesize reduction 260, result has 56.4 percent of original size [2022-07-11 22:57:55,452 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 405481 treesize of output 381724