./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-patterns/array30_pattern.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5317dae 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/array30_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 bf9fb5599b361d63a40d668c035ff2f49b2f61ec342dc99fdd2f9d975d29190c --- Real Ultimate output --- This is Ultimate 0.2.2-?-b5317da-m [2023-02-16 00:08:15,724 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-16 00:08:15,726 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-16 00:08:15,747 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-16 00:08:15,748 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-16 00:08:15,749 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-16 00:08:15,750 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-16 00:08:15,751 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-16 00:08:15,752 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-16 00:08:15,752 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-16 00:08:15,753 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-16 00:08:15,757 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-16 00:08:15,758 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-16 00:08:15,760 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-16 00:08:15,762 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-16 00:08:15,764 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-16 00:08:15,766 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-16 00:08:15,769 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-16 00:08:15,770 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-16 00:08:15,772 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-16 00:08:15,774 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-16 00:08:15,775 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-16 00:08:15,776 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-16 00:08:15,777 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-16 00:08:15,779 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-16 00:08:15,782 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-16 00:08:15,782 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-16 00:08:15,782 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-16 00:08:15,783 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-16 00:08:15,784 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-16 00:08:15,785 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-16 00:08:15,785 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-16 00:08:15,786 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-16 00:08:15,787 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-16 00:08:15,787 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-16 00:08:15,788 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-16 00:08:15,789 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-16 00:08:15,789 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-16 00:08:15,789 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-16 00:08:15,790 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-16 00:08:15,791 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-16 00:08:15,792 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-16 00:08:15,808 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-16 00:08:15,809 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-16 00:08:15,809 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-16 00:08:15,809 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-16 00:08:15,810 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-16 00:08:15,810 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-16 00:08:15,810 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-16 00:08:15,811 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-16 00:08:15,811 INFO L138 SettingsManager]: * Use SBE=true [2023-02-16 00:08:15,811 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-16 00:08:15,811 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-16 00:08:15,812 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-16 00:08:15,812 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-16 00:08:15,812 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-16 00:08:15,812 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-16 00:08:15,812 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-16 00:08:15,812 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-16 00:08:15,812 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-16 00:08:15,812 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-16 00:08:15,813 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-16 00:08:15,813 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-16 00:08:15,813 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-16 00:08:15,813 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-16 00:08:15,813 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-16 00:08:15,813 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 00:08:15,813 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-16 00:08:15,814 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-16 00:08:15,814 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-16 00:08:15,814 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-16 00:08:15,814 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-16 00:08:15,814 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-16 00:08:15,814 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-16 00:08:15,815 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-16 00:08:15,815 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-16 00:08:15,815 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-16 00:08:15,815 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bf9fb5599b361d63a40d668c035ff2f49b2f61ec342dc99fdd2f9d975d29190c [2023-02-16 00:08:15,993 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-16 00:08:16,010 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-16 00:08:16,012 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-16 00:08:16,013 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-16 00:08:16,013 INFO L275 PluginConnector]: CDTParser initialized [2023-02-16 00:08:16,014 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-patterns/array30_pattern.c [2023-02-16 00:08:17,091 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-16 00:08:17,272 INFO L351 CDTParser]: Found 1 translation units. [2023-02-16 00:08:17,273 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array30_pattern.c [2023-02-16 00:08:17,277 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/867f9d92e/963927aecea44618848ee4489ffce43d/FLAG91b492c76 [2023-02-16 00:08:17,288 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/867f9d92e/963927aecea44618848ee4489ffce43d [2023-02-16 00:08:17,289 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-16 00:08:17,290 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-16 00:08:17,291 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-16 00:08:17,291 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-16 00:08:17,293 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-16 00:08:17,294 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 12:08:17" (1/1) ... [2023-02-16 00:08:17,295 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a3a2951 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:08:17, skipping insertion in model container [2023-02-16 00:08:17,295 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 12:08:17" (1/1) ... [2023-02-16 00:08:17,299 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-16 00:08:17,308 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-16 00:08:17,393 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array30_pattern.c[1189,1202] [2023-02-16 00:08:17,405 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 00:08:17,411 INFO L203 MainTranslator]: Completed pre-run [2023-02-16 00:08:17,419 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array30_pattern.c[1189,1202] [2023-02-16 00:08:17,423 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 00:08:17,431 INFO L208 MainTranslator]: Completed translation [2023-02-16 00:08:17,432 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:08:17 WrapperNode [2023-02-16 00:08:17,432 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-16 00:08:17,433 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-16 00:08:17,433 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-16 00:08:17,433 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-16 00:08:17,438 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:08:17" (1/1) ... [2023-02-16 00:08:17,443 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:08:17" (1/1) ... [2023-02-16 00:08:17,453 INFO L138 Inliner]: procedures = 17, calls = 15, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 80 [2023-02-16 00:08:17,454 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-16 00:08:17,454 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-16 00:08:17,454 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-16 00:08:17,455 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-16 00:08:17,460 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:08:17" (1/1) ... [2023-02-16 00:08:17,460 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:08:17" (1/1) ... [2023-02-16 00:08:17,462 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:08:17" (1/1) ... [2023-02-16 00:08:17,462 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:08:17" (1/1) ... [2023-02-16 00:08:17,464 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:08:17" (1/1) ... [2023-02-16 00:08:17,466 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:08:17" (1/1) ... [2023-02-16 00:08:17,467 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:08:17" (1/1) ... [2023-02-16 00:08:17,468 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:08:17" (1/1) ... [2023-02-16 00:08:17,469 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-16 00:08:17,470 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-16 00:08:17,470 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-16 00:08:17,470 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-16 00:08:17,470 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:08:17" (1/1) ... [2023-02-16 00:08:17,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 00:08:17,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:08:17,490 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-16 00:08:17,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-16 00:08:17,525 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-16 00:08:17,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-16 00:08:17,526 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-16 00:08:17,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-16 00:08:17,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-16 00:08:17,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-16 00:08:17,526 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-16 00:08:17,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-16 00:08:17,570 INFO L235 CfgBuilder]: Building ICFG [2023-02-16 00:08:17,572 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-16 00:08:17,678 INFO L276 CfgBuilder]: Performing block encoding [2023-02-16 00:08:17,683 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-16 00:08:17,683 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2023-02-16 00:08:17,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 12:08:17 BoogieIcfgContainer [2023-02-16 00:08:17,684 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-16 00:08:17,686 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-16 00:08:17,686 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-16 00:08:17,688 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-16 00:08:17,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.02 12:08:17" (1/3) ... [2023-02-16 00:08:17,689 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ffb19fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 12:08:17, skipping insertion in model container [2023-02-16 00:08:17,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:08:17" (2/3) ... [2023-02-16 00:08:17,689 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ffb19fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 12:08:17, skipping insertion in model container [2023-02-16 00:08:17,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 12:08:17" (3/3) ... [2023-02-16 00:08:17,690 INFO L112 eAbstractionObserver]: Analyzing ICFG array30_pattern.c [2023-02-16 00:08:17,707 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-16 00:08:17,707 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-16 00:08:17,746 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-16 00:08:17,751 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@12778179, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-16 00:08:17,752 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-16 00:08:17,754 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:08:17,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-16 00:08:17,758 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:08:17,759 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:08:17,759 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:08:17,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:08:17,763 INFO L85 PathProgramCache]: Analyzing trace with hash -409725857, now seen corresponding path program 1 times [2023-02-16 00:08:17,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:08:17,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115519798] [2023-02-16 00:08:17,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:08:17,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:08:17,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:08:17,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:08:17,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115519798] [2023-02-16 00:08:17,851 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-02-16 00:08:17,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1933242854] [2023-02-16 00:08:17,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:08:17,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:08:17,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:08:17,854 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 00:08:17,855 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-16 00:08:17,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:08:17,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 1 conjunts are in the unsatisfiable core [2023-02-16 00:08:17,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:08:17,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:08:17,916 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 00:08:17,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1933242854] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:08:17,917 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:08:17,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-16 00:08:17,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951942253] [2023-02-16 00:08:17,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:08:17,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-16 00:08:17,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:08:17,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-16 00:08:17,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-16 00:08:17,940 INFO L87 Difference]: Start difference. First operand has 23 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:08:17,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:08:17,951 INFO L93 Difference]: Finished difference Result 43 states and 62 transitions. [2023-02-16 00:08:17,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-16 00:08:17,953 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-02-16 00:08:17,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:08:17,958 INFO L225 Difference]: With dead ends: 43 [2023-02-16 00:08:17,958 INFO L226 Difference]: Without dead ends: 19 [2023-02-16 00:08:17,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-16 00:08:17,963 INFO L413 NwaCegarLoop]: 27 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, 27 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 00:08:17,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 00:08:17,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2023-02-16 00:08:17,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2023-02-16 00:08:17,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:08:17,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2023-02-16 00:08:17,984 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 10 [2023-02-16 00:08:17,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:08:17,984 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2023-02-16 00:08:17,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:08:17,984 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2023-02-16 00:08:17,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-16 00:08:17,985 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:08:17,985 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:08:17,993 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-16 00:08:18,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-02-16 00:08:18,192 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:08:18,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:08:18,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1934801258, now seen corresponding path program 1 times [2023-02-16 00:08:18,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:08:18,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658502758] [2023-02-16 00:08:18,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:08:18,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:08:18,212 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 00:08:18,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [518190856] [2023-02-16 00:08:18,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:08:18,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:08:18,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:08:18,238 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 00:08:18,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-16 00:08:18,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:08:18,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-16 00:08:18,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:08:18,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:08:18,366 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 00:08:18,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:08:18,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658502758] [2023-02-16 00:08:18,367 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 00:08:18,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518190856] [2023-02-16 00:08:18,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [518190856] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:08:18,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:08:18,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-16 00:08:18,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528292612] [2023-02-16 00:08:18,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:08:18,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-16 00:08:18,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:08:18,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-16 00:08:18,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-16 00:08:18,370 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:08:18,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:08:18,459 INFO L93 Difference]: Finished difference Result 38 states and 48 transitions. [2023-02-16 00:08:18,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-16 00:08:18,460 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-02-16 00:08:18,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:08:18,460 INFO L225 Difference]: With dead ends: 38 [2023-02-16 00:08:18,461 INFO L226 Difference]: Without dead ends: 29 [2023-02-16 00:08:18,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-02-16 00:08:18,462 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 77 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 00:08:18,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 15 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 00:08:18,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-02-16 00:08:18,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 21. [2023-02-16 00:08:18,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:08:18,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2023-02-16 00:08:18,468 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 10 [2023-02-16 00:08:18,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:08:18,469 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2023-02-16 00:08:18,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:08:18,469 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2023-02-16 00:08:18,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-16 00:08:18,469 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:08:18,469 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:08:18,474 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-02-16 00:08:18,674 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,SelfDestructingSolverStorable1 [2023-02-16 00:08:18,675 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:08:18,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:08:18,676 INFO L85 PathProgramCache]: Analyzing trace with hash 761451258, now seen corresponding path program 1 times [2023-02-16 00:08:18,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:08:18,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468625576] [2023-02-16 00:08:18,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:08:18,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:08:18,687 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 00:08:18,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [418827746] [2023-02-16 00:08:18,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:08:18,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:08:18,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:08:18,707 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 00:08:18,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-16 00:08:18,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:08:18,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-16 00:08:18,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:08:18,777 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-16 00:08:18,778 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 00:08:18,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:08:18,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468625576] [2023-02-16 00:08:18,779 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 00:08:18,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418827746] [2023-02-16 00:08:18,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [418827746] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:08:18,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:08:18,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-16 00:08:18,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197356985] [2023-02-16 00:08:18,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:08:18,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-16 00:08:18,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:08:18,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-16 00:08:18,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-16 00:08:18,781 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:08:18,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:08:18,829 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2023-02-16 00:08:18,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-16 00:08:18,830 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-02-16 00:08:18,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:08:18,831 INFO L225 Difference]: With dead ends: 43 [2023-02-16 00:08:18,831 INFO L226 Difference]: Without dead ends: 27 [2023-02-16 00:08:18,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-16 00:08:18,835 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 28 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 00:08:18,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 20 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 00:08:18,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-02-16 00:08:18,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2023-02-16 00:08:18,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:08:18,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2023-02-16 00:08:18,846 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 16 [2023-02-16 00:08:18,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:08:18,846 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2023-02-16 00:08:18,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:08:18,847 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2023-02-16 00:08:18,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-02-16 00:08:18,848 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:08:18,848 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:08:18,874 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-16 00:08:19,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:08:19,075 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:08:19,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:08:19,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1879431543, now seen corresponding path program 1 times [2023-02-16 00:08:19,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:08:19,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239115716] [2023-02-16 00:08:19,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:08:19,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:08:19,087 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 00:08:19,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2010732922] [2023-02-16 00:08:19,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:08:19,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:08:19,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:08:19,096 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 00:08:19,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-16 00:08:19,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:08:19,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-16 00:08:19,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:08:19,193 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-16 00:08:19,194 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 00:08:19,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:08:19,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239115716] [2023-02-16 00:08:19,194 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 00:08:19,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2010732922] [2023-02-16 00:08:19,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2010732922] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:08:19,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:08:19,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-16 00:08:19,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036194177] [2023-02-16 00:08:19,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:08:19,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-16 00:08:19,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:08:19,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-16 00:08:19,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-16 00:08:19,197 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:08:19,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:08:19,263 INFO L93 Difference]: Finished difference Result 75 states and 91 transitions. [2023-02-16 00:08:19,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-16 00:08:19,264 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2023-02-16 00:08:19,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:08:19,264 INFO L225 Difference]: With dead ends: 75 [2023-02-16 00:08:19,264 INFO L226 Difference]: Without dead ends: 57 [2023-02-16 00:08:19,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-02-16 00:08:19,265 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 46 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 00:08:19,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 45 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 00:08:19,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2023-02-16 00:08:19,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 25. [2023-02-16 00:08:19,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 24 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:08:19,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2023-02-16 00:08:19,270 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 22 [2023-02-16 00:08:19,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:08:19,271 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2023-02-16 00:08:19,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:08:19,271 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2023-02-16 00:08:19,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-02-16 00:08:19,271 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:08:19,271 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:08:19,278 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-16 00:08:19,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:08:19,477 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:08:19,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:08:19,477 INFO L85 PathProgramCache]: Analyzing trace with hash 858363189, now seen corresponding path program 1 times [2023-02-16 00:08:19,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:08:19,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571121347] [2023-02-16 00:08:19,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:08:19,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:08:19,485 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 00:08:19,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [673496987] [2023-02-16 00:08:19,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:08:19,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:08:19,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:08:19,487 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 00:08:19,490 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-16 00:08:19,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:08:19,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 38 conjunts are in the unsatisfiable core [2023-02-16 00:08:19,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:08:19,675 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-02-16 00:08:19,830 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-02-16 00:08:19,891 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:08:19,891 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 00:08:20,019 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 27 [2023-02-16 00:08:20,023 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 52 [2023-02-16 00:08:20,385 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:08:20,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:08:20,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571121347] [2023-02-16 00:08:20,386 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 00:08:20,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [673496987] [2023-02-16 00:08:20,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [673496987] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 00:08:20,386 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 00:08:20,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 26 [2023-02-16 00:08:20,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237517169] [2023-02-16 00:08:20,386 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 00:08:20,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-02-16 00:08:20,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:08:20,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-02-16 00:08:20,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=536, Unknown=0, NotChecked=0, Total=650 [2023-02-16 00:08:20,387 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 26 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 26 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:08:42,736 WARN L233 SmtUtils]: Spent 9.30s on a formula simplification. DAG size of input: 93 DAG size of output: 83 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-16 00:08:51,094 WARN L233 SmtUtils]: Spent 7.46s on a formula simplification. DAG size of input: 77 DAG size of output: 72 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-16 00:08:59,632 WARN L233 SmtUtils]: Spent 8.48s on a formula simplification. DAG size of input: 92 DAG size of output: 82 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-16 00:09:06,905 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-02-16 00:09:14,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:09:14,558 INFO L93 Difference]: Finished difference Result 155 states and 193 transitions. [2023-02-16 00:09:14,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2023-02-16 00:09:14,558 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 26 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2023-02-16 00:09:14,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:09:14,560 INFO L225 Difference]: With dead ends: 155 [2023-02-16 00:09:14,560 INFO L226 Difference]: Without dead ends: 149 [2023-02-16 00:09:14,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2669 ImplicationChecksByTransitivity, 50.5s TimeCoverageRelationStatistics Valid=1590, Invalid=6599, Unknown=1, NotChecked=0, Total=8190 [2023-02-16 00:09:14,563 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 366 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 646 mSolverCounterSat, 77 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 646 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-02-16 00:09:14,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [366 Valid, 102 Invalid, 724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 646 Invalid, 1 Unknown, 0 Unchecked, 4.0s Time] [2023-02-16 00:09:14,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2023-02-16 00:09:14,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 58. [2023-02-16 00:09:14,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.3157894736842106) internal successors, (75), 57 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:09:14,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 75 transitions. [2023-02-16 00:09:14,585 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 75 transitions. Word has length 22 [2023-02-16 00:09:14,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:09:14,586 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 75 transitions. [2023-02-16 00:09:14,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 26 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:09:14,586 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 75 transitions. [2023-02-16 00:09:14,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-02-16 00:09:14,587 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:09:14,587 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:09:14,604 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-16 00:09:14,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:09:14,805 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:09:14,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:09:14,808 INFO L85 PathProgramCache]: Analyzing trace with hash 413561143, now seen corresponding path program 2 times [2023-02-16 00:09:14,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:09:14,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768433953] [2023-02-16 00:09:14,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:09:14,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:09:14,816 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 00:09:14,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1612650558] [2023-02-16 00:09:14,817 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-16 00:09:14,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:09:14,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:09:14,818 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 00:09:14,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-16 00:09:14,867 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-16 00:09:14,867 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 00:09:14,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-16 00:09:14,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:09:14,902 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:09:14,902 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 00:09:14,932 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:09:14,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:09:14,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768433953] [2023-02-16 00:09:14,933 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 00:09:14,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612650558] [2023-02-16 00:09:14,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1612650558] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 00:09:14,933 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 00:09:14,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2023-02-16 00:09:14,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494297918] [2023-02-16 00:09:14,934 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 00:09:14,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-16 00:09:14,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:09:14,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-16 00:09:14,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-02-16 00:09:14,935 INFO L87 Difference]: Start difference. First operand 58 states and 75 transitions. Second operand has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:09:15,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:09:15,034 INFO L93 Difference]: Finished difference Result 143 states and 183 transitions. [2023-02-16 00:09:15,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-16 00:09:15,035 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2023-02-16 00:09:15,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:09:15,035 INFO L225 Difference]: With dead ends: 143 [2023-02-16 00:09:15,035 INFO L226 Difference]: Without dead ends: 99 [2023-02-16 00:09:15,036 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2023-02-16 00:09:15,036 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 88 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 00:09:15,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 65 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 00:09:15,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2023-02-16 00:09:15,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 74. [2023-02-16 00:09:15,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.273972602739726) internal successors, (93), 73 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:09:15,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 93 transitions. [2023-02-16 00:09:15,072 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 93 transitions. Word has length 24 [2023-02-16 00:09:15,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:09:15,072 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 93 transitions. [2023-02-16 00:09:15,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:09:15,075 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 93 transitions. [2023-02-16 00:09:15,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-02-16 00:09:15,076 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:09:15,076 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:09:15,090 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-02-16 00:09:15,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:09:15,281 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:09:15,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:09:15,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1333246064, now seen corresponding path program 1 times [2023-02-16 00:09:15,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:09:15,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267425565] [2023-02-16 00:09:15,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:09:15,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:09:15,298 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 00:09:15,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1684418733] [2023-02-16 00:09:15,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:09:15,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:09:15,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:09:15,300 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 00:09:15,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-16 00:09:15,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:09:15,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-16 00:09:15,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:09:15,417 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-16 00:09:15,417 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 00:09:15,452 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-16 00:09:15,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:09:15,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267425565] [2023-02-16 00:09:15,452 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 00:09:15,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1684418733] [2023-02-16 00:09:15,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1684418733] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 00:09:15,452 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 00:09:15,452 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2023-02-16 00:09:15,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335595891] [2023-02-16 00:09:15,452 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 00:09:15,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-16 00:09:15,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:09:15,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-16 00:09:15,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-02-16 00:09:15,453 INFO L87 Difference]: Start difference. First operand 74 states and 93 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:09:15,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:09:15,596 INFO L93 Difference]: Finished difference Result 121 states and 151 transitions. [2023-02-16 00:09:15,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-16 00:09:15,597 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2023-02-16 00:09:15,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:09:15,599 INFO L225 Difference]: With dead ends: 121 [2023-02-16 00:09:15,599 INFO L226 Difference]: Without dead ends: 103 [2023-02-16 00:09:15,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2023-02-16 00:09:15,600 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 53 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 00:09:15,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 57 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 00:09:15,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2023-02-16 00:09:15,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 81. [2023-02-16 00:09:15,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 1.2625) internal successors, (101), 80 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:09:15,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 101 transitions. [2023-02-16 00:09:15,631 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 101 transitions. Word has length 26 [2023-02-16 00:09:15,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:09:15,631 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 101 transitions. [2023-02-16 00:09:15,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:09:15,632 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 101 transitions. [2023-02-16 00:09:15,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-02-16 00:09:15,635 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:09:15,635 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:09:15,655 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-02-16 00:09:15,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:09:15,841 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:09:15,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:09:15,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1250996973, now seen corresponding path program 3 times [2023-02-16 00:09:15,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:09:15,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745942596] [2023-02-16 00:09:15,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:09:15,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:09:15,854 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 00:09:15,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1596808239] [2023-02-16 00:09:15,855 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-16 00:09:15,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:09:15,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:09:15,873 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 00:09:15,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-16 00:09:15,957 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-02-16 00:09:15,957 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 00:09:15,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-16 00:09:15,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:09:16,002 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-16 00:09:16,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 00:09:16,037 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-16 00:09:16,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:09:16,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745942596] [2023-02-16 00:09:16,037 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 00:09:16,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1596808239] [2023-02-16 00:09:16,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1596808239] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 00:09:16,038 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 00:09:16,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2023-02-16 00:09:16,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750567748] [2023-02-16 00:09:16,038 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 00:09:16,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-16 00:09:16,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:09:16,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-16 00:09:16,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-02-16 00:09:16,040 INFO L87 Difference]: Start difference. First operand 81 states and 101 transitions. Second operand has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:09:16,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:09:16,154 INFO L93 Difference]: Finished difference Result 137 states and 164 transitions. [2023-02-16 00:09:16,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-16 00:09:16,155 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-02-16 00:09:16,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:09:16,156 INFO L225 Difference]: With dead ends: 137 [2023-02-16 00:09:16,156 INFO L226 Difference]: Without dead ends: 121 [2023-02-16 00:09:16,156 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 42 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2023-02-16 00:09:16,157 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 34 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 00:09:16,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 52 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 00:09:16,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2023-02-16 00:09:16,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 83. [2023-02-16 00:09:16,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.2560975609756098) internal successors, (103), 82 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:09:16,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 103 transitions. [2023-02-16 00:09:16,188 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 103 transitions. Word has length 27 [2023-02-16 00:09:16,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:09:16,188 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 103 transitions. [2023-02-16 00:09:16,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:09:16,188 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 103 transitions. [2023-02-16 00:09:16,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-02-16 00:09:16,191 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:09:16,191 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:09:16,200 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-02-16 00:09:16,396 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,SelfDestructingSolverStorable7 [2023-02-16 00:09:16,397 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:09:16,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:09:16,397 INFO L85 PathProgramCache]: Analyzing trace with hash -378872012, now seen corresponding path program 2 times [2023-02-16 00:09:16,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:09:16,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496580978] [2023-02-16 00:09:16,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:09:16,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:09:16,412 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 00:09:16,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [43677555] [2023-02-16 00:09:16,413 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-16 00:09:16,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:09:16,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:09:16,419 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 00:09:16,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-02-16 00:09:16,462 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-16 00:09:16,462 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 00:09:16,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-16 00:09:16,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:09:16,503 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-16 00:09:16,503 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 00:09:16,529 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-16 00:09:16,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:09:16,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496580978] [2023-02-16 00:09:16,529 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 00:09:16,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43677555] [2023-02-16 00:09:16,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [43677555] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 00:09:16,529 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 00:09:16,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2023-02-16 00:09:16,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214125705] [2023-02-16 00:09:16,530 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 00:09:16,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-16 00:09:16,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:09:16,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-16 00:09:16,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-02-16 00:09:16,531 INFO L87 Difference]: Start difference. First operand 83 states and 103 transitions. Second operand has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:09:16,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:09:16,649 INFO L93 Difference]: Finished difference Result 115 states and 137 transitions. [2023-02-16 00:09:16,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-16 00:09:16,649 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2023-02-16 00:09:16,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:09:16,651 INFO L225 Difference]: With dead ends: 115 [2023-02-16 00:09:16,651 INFO L226 Difference]: Without dead ends: 73 [2023-02-16 00:09:16,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2023-02-16 00:09:16,653 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 76 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 00:09:16,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 34 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 00:09:16,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2023-02-16 00:09:16,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 61. [2023-02-16 00:09:16,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.2166666666666666) internal successors, (73), 60 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:09:16,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 73 transitions. [2023-02-16 00:09:16,666 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 73 transitions. Word has length 29 [2023-02-16 00:09:16,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:09:16,667 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 73 transitions. [2023-02-16 00:09:16,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:09:16,667 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 73 transitions. [2023-02-16 00:09:16,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-02-16 00:09:16,670 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:09:16,670 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:09:16,686 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-02-16 00:09:16,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:09:16,876 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:09:16,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:09:16,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1285246055, now seen corresponding path program 3 times [2023-02-16 00:09:16,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:09:16,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181763743] [2023-02-16 00:09:16,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:09:16,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:09:16,886 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 00:09:16,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1619337883] [2023-02-16 00:09:16,886 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-16 00:09:16,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:09:16,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:09:16,887 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 00:09:16,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-02-16 00:09:16,957 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-02-16 00:09:16,957 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 00:09:16,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-16 00:09:16,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:09:17,018 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-02-16 00:09:17,018 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 00:09:17,050 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-02-16 00:09:17,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:09:17,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181763743] [2023-02-16 00:09:17,051 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 00:09:17,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619337883] [2023-02-16 00:09:17,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619337883] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 00:09:17,051 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 00:09:17,051 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2023-02-16 00:09:17,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656484904] [2023-02-16 00:09:17,052 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 00:09:17,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-16 00:09:17,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:09:17,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-16 00:09:17,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-02-16 00:09:17,053 INFO L87 Difference]: Start difference. First operand 61 states and 73 transitions. Second operand has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:09:17,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:09:17,170 INFO L93 Difference]: Finished difference Result 74 states and 87 transitions. [2023-02-16 00:09:17,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-16 00:09:17,171 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2023-02-16 00:09:17,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:09:17,171 INFO L225 Difference]: With dead ends: 74 [2023-02-16 00:09:17,171 INFO L226 Difference]: Without dead ends: 61 [2023-02-16 00:09:17,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 54 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2023-02-16 00:09:17,172 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 51 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 00:09:17,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 35 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 00:09:17,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2023-02-16 00:09:17,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 49. [2023-02-16 00:09:17,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.2083333333333333) internal successors, (58), 48 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:09:17,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 58 transitions. [2023-02-16 00:09:17,199 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 58 transitions. Word has length 33 [2023-02-16 00:09:17,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:09:17,199 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 58 transitions. [2023-02-16 00:09:17,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:09:17,199 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 58 transitions. [2023-02-16 00:09:17,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-02-16 00:09:17,200 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:09:17,200 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:09:17,206 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-02-16 00:09:17,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-02-16 00:09:17,406 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:09:17,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:09:17,406 INFO L85 PathProgramCache]: Analyzing trace with hash -2069220910, now seen corresponding path program 4 times [2023-02-16 00:09:17,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:09:17,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805601620] [2023-02-16 00:09:17,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:09:17,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:09:17,414 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 00:09:17,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1350031942] [2023-02-16 00:09:17,414 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-16 00:09:17,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:09:17,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:09:17,416 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 00:09:17,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-02-16 00:09:17,456 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-16 00:09:17,456 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 00:09:17,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-16 00:09:17,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:09:17,489 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-02-16 00:09:17,489 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 00:09:17,517 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-02-16 00:09:17,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:09:17,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805601620] [2023-02-16 00:09:17,517 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 00:09:17,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350031942] [2023-02-16 00:09:17,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1350031942] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 00:09:17,518 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 00:09:17,518 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2023-02-16 00:09:17,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74347673] [2023-02-16 00:09:17,518 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 00:09:17,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-16 00:09:17,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:09:17,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-16 00:09:17,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-02-16 00:09:17,519 INFO L87 Difference]: Start difference. First operand 49 states and 58 transitions. Second operand has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:09:17,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:09:17,610 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2023-02-16 00:09:17,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-16 00:09:17,611 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2023-02-16 00:09:17,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:09:17,611 INFO L225 Difference]: With dead ends: 58 [2023-02-16 00:09:17,611 INFO L226 Difference]: Without dead ends: 52 [2023-02-16 00:09:17,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 80 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2023-02-16 00:09:17,612 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 55 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 00:09:17,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 61 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 00:09:17,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2023-02-16 00:09:17,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 47. [2023-02-16 00:09:17,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 46 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:09:17,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 55 transitions. [2023-02-16 00:09:17,621 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 55 transitions. Word has length 44 [2023-02-16 00:09:17,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:09:17,621 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 55 transitions. [2023-02-16 00:09:17,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:09:17,621 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions. [2023-02-16 00:09:17,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-02-16 00:09:17,622 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:09:17,622 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:09:17,643 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-02-16 00:09:17,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-02-16 00:09:17,844 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:09:17,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:09:17,845 INFO L85 PathProgramCache]: Analyzing trace with hash 208820884, now seen corresponding path program 5 times [2023-02-16 00:09:17,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:09:17,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345542143] [2023-02-16 00:09:17,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:09:17,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:09:17,860 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 00:09:17,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [463180905] [2023-02-16 00:09:17,860 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-16 00:09:17,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:09:17,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:09:17,861 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 00:09:17,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-02-16 00:09:18,130 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2023-02-16 00:09:18,130 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 00:09:18,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 22 conjunts are in the unsatisfiable core [2023-02-16 00:09:18,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:09:20,759 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 21 proven. 16 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-02-16 00:09:20,759 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 00:09:21,388 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 26 proven. 29 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-02-16 00:09:21,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:09:21,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345542143] [2023-02-16 00:09:21,388 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 00:09:21,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463180905] [2023-02-16 00:09:21,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [463180905] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 00:09:21,388 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 00:09:21,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14] total 22 [2023-02-16 00:09:21,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079872027] [2023-02-16 00:09:21,388 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 00:09:21,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-02-16 00:09:21,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:09:21,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-02-16 00:09:21,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=356, Unknown=0, NotChecked=0, Total=462 [2023-02-16 00:09:21,389 INFO L87 Difference]: Start difference. First operand 47 states and 55 transitions. Second operand has 22 states, 22 states have (on average 3.0454545454545454) internal successors, (67), 22 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:09:29,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:09:29,006 INFO L93 Difference]: Finished difference Result 233 states and 290 transitions. [2023-02-16 00:09:29,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2023-02-16 00:09:29,007 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.0454545454545454) internal successors, (67), 22 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2023-02-16 00:09:29,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:09:29,008 INFO L225 Difference]: With dead ends: 233 [2023-02-16 00:09:29,008 INFO L226 Difference]: Without dead ends: 130 [2023-02-16 00:09:29,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 68 SyntacticMatches, 2 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1699 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=1332, Invalid=4368, Unknown=0, NotChecked=0, Total=5700 [2023-02-16 00:09:29,010 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 167 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 605 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-02-16 00:09:29,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 88 Invalid, 673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 605 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-02-16 00:09:29,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2023-02-16 00:09:29,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 89. [2023-02-16 00:09:29,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 1.2840909090909092) internal successors, (113), 88 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:09:29,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 113 transitions. [2023-02-16 00:09:29,034 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 113 transitions. Word has length 46 [2023-02-16 00:09:29,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:09:29,034 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 113 transitions. [2023-02-16 00:09:29,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.0454545454545454) internal successors, (67), 22 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:09:29,035 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 113 transitions. [2023-02-16 00:09:29,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-02-16 00:09:29,035 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:09:29,036 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:09:29,041 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-02-16 00:09:29,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-02-16 00:09:29,241 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:09:29,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:09:29,241 INFO L85 PathProgramCache]: Analyzing trace with hash -185545902, now seen corresponding path program 6 times [2023-02-16 00:09:29,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:09:29,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328270238] [2023-02-16 00:09:29,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:09:29,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:09:29,250 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 00:09:29,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1571422502] [2023-02-16 00:09:29,250 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-16 00:09:29,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:09:29,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:09:29,253 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 00:09:29,254 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-02-16 00:09:29,325 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2023-02-16 00:09:29,325 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 00:09:29,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 13 conjunts are in the unsatisfiable core [2023-02-16 00:09:29,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:09:29,386 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 14 proven. 17 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-02-16 00:09:29,386 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 00:09:29,523 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 14 proven. 17 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-02-16 00:09:29,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:09:29,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328270238] [2023-02-16 00:09:29,523 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 00:09:29,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571422502] [2023-02-16 00:09:29,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1571422502] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 00:09:29,523 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 00:09:29,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-02-16 00:09:29,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736803935] [2023-02-16 00:09:29,523 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 00:09:29,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-16 00:09:29,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:09:29,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-16 00:09:29,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-02-16 00:09:29,524 INFO L87 Difference]: Start difference. First operand 89 states and 113 transitions. Second operand has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:09:30,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:09:30,037 INFO L93 Difference]: Finished difference Result 321 states and 401 transitions. [2023-02-16 00:09:30,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-02-16 00:09:30,038 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2023-02-16 00:09:30,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:09:30,038 INFO L225 Difference]: With dead ends: 321 [2023-02-16 00:09:30,039 INFO L226 Difference]: Without dead ends: 239 [2023-02-16 00:09:30,039 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=252, Invalid=870, Unknown=0, NotChecked=0, Total=1122 [2023-02-16 00:09:30,040 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 299 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 00:09:30,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [299 Valid, 87 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 00:09:30,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2023-02-16 00:09:30,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 99. [2023-02-16 00:09:30,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 98 states have (on average 1.2653061224489797) internal successors, (124), 98 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:09:30,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 124 transitions. [2023-02-16 00:09:30,068 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 124 transitions. Word has length 46 [2023-02-16 00:09:30,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:09:30,068 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 124 transitions. [2023-02-16 00:09:30,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:09:30,068 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 124 transitions. [2023-02-16 00:09:30,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-02-16 00:09:30,069 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:09:30,069 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:09:30,074 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-02-16 00:09:30,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-02-16 00:09:30,274 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:09:30,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:09:30,275 INFO L85 PathProgramCache]: Analyzing trace with hash -44997292, now seen corresponding path program 7 times [2023-02-16 00:09:30,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:09:30,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157585658] [2023-02-16 00:09:30,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:09:30,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:09:30,281 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 00:09:30,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1895008107] [2023-02-16 00:09:30,281 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-16 00:09:30,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:09:30,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:09:30,282 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 00:09:30,284 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-02-16 00:09:30,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:09:30,504 WARN L261 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 98 conjunts are in the unsatisfiable core [2023-02-16 00:09:30,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:09:30,611 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2023-02-16 00:09:30,758 INFO L321 Elim1Store]: treesize reduction 33, result has 28.3 percent of original size [2023-02-16 00:09:30,759 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 47 [2023-02-16 00:09:31,052 INFO L321 Elim1Store]: treesize reduction 66, result has 20.5 percent of original size [2023-02-16 00:09:31,053 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 45 treesize of output 43 [2023-02-16 00:09:31,309 INFO L321 Elim1Store]: treesize reduction 78, result has 17.9 percent of original size [2023-02-16 00:09:31,310 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 71 treesize of output 62 [2023-02-16 00:09:32,041 INFO L321 Elim1Store]: treesize reduction 42, result has 2.3 percent of original size [2023-02-16 00:09:32,041 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 101 treesize of output 30 [2023-02-16 00:09:32,136 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:09:32,136 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 00:10:15,397 WARN L233 SmtUtils]: Spent 13.34s on a formula simplification. DAG size of input: 80 DAG size of output: 77 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-16 00:10:32,372 WARN L233 SmtUtils]: Spent 8.37s on a formula simplification that was a NOOP. DAG size: 94 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-16 00:10:41,918 WARN L233 SmtUtils]: Spent 8.10s on a formula simplification that was a NOOP. DAG size: 96 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-16 00:10:41,973 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 317 treesize of output 309 [2023-02-16 00:10:42,990 INFO L321 Elim1Store]: treesize reduction 10, result has 76.7 percent of original size [2023-02-16 00:10:42,998 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 3372702522 treesize of output 3293010778