./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/brs1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7e1ff0e6 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-fpi/brs1.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 1719c559f228c1029533750a96ea896ed07efcc9b139440443e471db2c10d1e7 --- Real Ultimate output --- This is Ultimate 0.2.2-?-7e1ff0e [2023-02-14 22:04:49,241 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-14 22:04:49,242 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-14 22:04:49,263 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-14 22:04:49,264 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-14 22:04:49,266 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-14 22:04:49,267 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-14 22:04:49,269 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-14 22:04:49,271 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-14 22:04:49,274 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-14 22:04:49,275 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-14 22:04:49,277 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-14 22:04:49,277 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-14 22:04:49,280 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-14 22:04:49,281 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-14 22:04:49,282 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-14 22:04:49,283 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-14 22:04:49,284 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-14 22:04:49,284 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-14 22:04:49,288 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-14 22:04:49,289 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-14 22:04:49,289 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-14 22:04:49,290 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-14 22:04:49,291 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-14 22:04:49,296 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-14 22:04:49,296 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-14 22:04:49,297 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-14 22:04:49,298 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-14 22:04:49,298 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-14 22:04:49,299 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-14 22:04:49,299 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-14 22:04:49,300 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-14 22:04:49,301 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-14 22:04:49,302 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-14 22:04:49,302 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-14 22:04:49,302 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-14 22:04:49,303 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-14 22:04:49,303 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-14 22:04:49,303 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-14 22:04:49,304 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-14 22:04:49,305 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-14 22:04:49,305 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-14 22:04:49,331 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-14 22:04:49,331 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-14 22:04:49,332 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-14 22:04:49,332 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-14 22:04:49,332 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-14 22:04:49,333 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-14 22:04:49,333 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-14 22:04:49,333 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-14 22:04:49,333 INFO L138 SettingsManager]: * Use SBE=true [2023-02-14 22:04:49,333 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-14 22:04:49,334 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-14 22:04:49,334 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-14 22:04:49,334 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-14 22:04:49,334 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-14 22:04:49,334 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-14 22:04:49,335 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-14 22:04:49,335 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-14 22:04:49,335 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-14 22:04:49,335 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-14 22:04:49,335 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-14 22:04:49,335 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-14 22:04:49,335 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-14 22:04:49,336 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-14 22:04:49,336 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-14 22:04:49,336 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-14 22:04:49,336 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-14 22:04:49,336 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-14 22:04:49,336 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-14 22:04:49,336 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-14 22:04:49,337 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-14 22:04:49,337 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-14 22:04:49,337 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-14 22:04:49,337 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-14 22:04:49,337 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-14 22:04:49,337 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-14 22:04:49,337 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1719c559f228c1029533750a96ea896ed07efcc9b139440443e471db2c10d1e7 [2023-02-14 22:04:49,564 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-14 22:04:49,579 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-14 22:04:49,581 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-14 22:04:49,582 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-14 22:04:49,582 INFO L275 PluginConnector]: CDTParser initialized [2023-02-14 22:04:49,583 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/brs1.c [2023-02-14 22:04:50,509 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-14 22:04:50,655 INFO L351 CDTParser]: Found 1 translation units. [2023-02-14 22:04:50,655 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/brs1.c [2023-02-14 22:04:50,658 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f82758a1b/94441a7ec965480090fd1863d95302e0/FLAG357739f02 [2023-02-14 22:04:50,667 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f82758a1b/94441a7ec965480090fd1863d95302e0 [2023-02-14 22:04:50,669 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-14 22:04:50,669 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-14 22:04:50,670 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-14 22:04:50,670 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-14 22:04:50,672 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-14 22:04:50,673 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 10:04:50" (1/1) ... [2023-02-14 22:04:50,674 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51ebe378 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:04:50, skipping insertion in model container [2023-02-14 22:04:50,674 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 10:04:50" (1/1) ... [2023-02-14 22:04:50,678 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-14 22:04:50,687 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-14 22:04:50,780 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-fpi/brs1.c[587,600] [2023-02-14 22:04:50,796 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 22:04:50,803 INFO L203 MainTranslator]: Completed pre-run [2023-02-14 22:04:50,814 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-fpi/brs1.c[587,600] [2023-02-14 22:04:50,820 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 22:04:50,832 INFO L208 MainTranslator]: Completed translation [2023-02-14 22:04:50,833 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:04:50 WrapperNode [2023-02-14 22:04:50,833 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-14 22:04:50,834 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-14 22:04:50,834 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-14 22:04:50,834 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-14 22:04:50,838 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:04:50" (1/1) ... [2023-02-14 22:04:50,848 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:04:50" (1/1) ... [2023-02-14 22:04:50,860 INFO L138 Inliner]: procedures = 17, calls = 27, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 73 [2023-02-14 22:04:50,860 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-14 22:04:50,861 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-14 22:04:50,861 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-14 22:04:50,861 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-14 22:04:50,868 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:04:50" (1/1) ... [2023-02-14 22:04:50,868 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:04:50" (1/1) ... [2023-02-14 22:04:50,869 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:04:50" (1/1) ... [2023-02-14 22:04:50,870 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:04:50" (1/1) ... [2023-02-14 22:04:50,877 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:04:50" (1/1) ... [2023-02-14 22:04:50,879 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:04:50" (1/1) ... [2023-02-14 22:04:50,883 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:04:50" (1/1) ... [2023-02-14 22:04:50,884 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:04:50" (1/1) ... [2023-02-14 22:04:50,885 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-14 22:04:50,886 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-14 22:04:50,886 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-14 22:04:50,886 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-14 22:04:50,887 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:04:50" (1/1) ... [2023-02-14 22:04:50,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-14 22:04:50,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 22:04:50,907 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) [2023-02-14 22:04:50,908 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 [2023-02-14 22:04:50,930 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-14 22:04:50,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-14 22:04:50,931 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-14 22:04:50,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-14 22:04:50,931 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-14 22:04:50,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-14 22:04:50,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-14 22:04:50,933 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-14 22:04:50,934 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-14 22:04:50,981 INFO L235 CfgBuilder]: Building ICFG [2023-02-14 22:04:50,982 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-14 22:04:51,114 INFO L276 CfgBuilder]: Performing block encoding [2023-02-14 22:04:51,118 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-14 22:04:51,119 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2023-02-14 22:04:51,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 10:04:51 BoogieIcfgContainer [2023-02-14 22:04:51,120 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-14 22:04:51,133 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-14 22:04:51,135 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-14 22:04:51,137 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-14 22:04:51,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.02 10:04:50" (1/3) ... [2023-02-14 22:04:51,138 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@247580f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 10:04:51, skipping insertion in model container [2023-02-14 22:04:51,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:04:50" (2/3) ... [2023-02-14 22:04:51,138 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@247580f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 10:04:51, skipping insertion in model container [2023-02-14 22:04:51,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 10:04:51" (3/3) ... [2023-02-14 22:04:51,139 INFO L112 eAbstractionObserver]: Analyzing ICFG brs1.c [2023-02-14 22:04:51,150 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-14 22:04:51,150 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-14 22:04:51,189 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-14 22:04:51,193 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;@4ad4dc53, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-14 22:04:51,193 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-14 22:04:51,195 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 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) [2023-02-14 22:04:51,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-02-14 22:04:51,199 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 22:04:51,199 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 22:04:51,200 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 22:04:51,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 22:04:51,203 INFO L85 PathProgramCache]: Analyzing trace with hash 361760665, now seen corresponding path program 1 times [2023-02-14 22:04:51,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 22:04:51,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24270256] [2023-02-14 22:04:51,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 22:04:51,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 22:04:51,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:04:51,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 22:04:51,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 22:04:51,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24270256] [2023-02-14 22:04:51,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24270256] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 22:04:51,324 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 22:04:51,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-14 22:04:51,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964017679] [2023-02-14 22:04:51,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 22:04:51,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-14 22:04:51,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 22:04:51,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-14 22:04:51,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-14 22:04:51,365 INFO L87 Difference]: Start difference. First operand has 20 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 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) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) [2023-02-14 22:04:51,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 22:04:51,379 INFO L93 Difference]: Finished difference Result 36 states and 50 transitions. [2023-02-14 22:04:51,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-14 22:04:51,380 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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 11 [2023-02-14 22:04:51,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 22:04:51,385 INFO L225 Difference]: With dead ends: 36 [2023-02-14 22:04:51,385 INFO L226 Difference]: Without dead ends: 16 [2023-02-14 22:04:51,388 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-14 22:04:51,390 INFO L413 NwaCegarLoop]: 23 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, 23 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 [2023-02-14 22:04:51,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 22:04:51,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2023-02-14 22:04:51,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2023-02-14 22:04:51,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 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) [2023-02-14 22:04:51,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2023-02-14 22:04:51,411 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 11 [2023-02-14 22:04:51,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 22:04:51,411 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2023-02-14 22:04:51,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) [2023-02-14 22:04:51,412 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2023-02-14 22:04:51,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-02-14 22:04:51,412 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 22:04:51,412 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 22:04:51,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-14 22:04:51,413 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 22:04:51,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 22:04:51,414 INFO L85 PathProgramCache]: Analyzing trace with hash -447913662, now seen corresponding path program 1 times [2023-02-14 22:04:51,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 22:04:51,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190893563] [2023-02-14 22:04:51,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 22:04:51,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 22:04:51,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:04:51,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 22:04:51,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 22:04:51,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190893563] [2023-02-14 22:04:51,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190893563] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 22:04:51,580 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 22:04:51,580 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-14 22:04:51,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9652674] [2023-02-14 22:04:51,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 22:04:51,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-14 22:04:51,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 22:04:51,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-14 22:04:51,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-14 22:04:51,583 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2023-02-14 22:04:51,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 22:04:51,631 INFO L93 Difference]: Finished difference Result 30 states and 36 transitions. [2023-02-14 22:04:51,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-14 22:04:51,632 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 11 [2023-02-14 22:04:51,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 22:04:51,632 INFO L225 Difference]: With dead ends: 30 [2023-02-14 22:04:51,632 INFO L226 Difference]: Without dead ends: 22 [2023-02-14 22:04:51,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-14 22:04:51,634 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 17 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 22:04:51,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 11 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 22:04:51,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-02-14 22:04:51,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 19. [2023-02-14 22:04:51,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 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) [2023-02-14 22:04:51,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2023-02-14 22:04:51,642 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 11 [2023-02-14 22:04:51,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 22:04:51,644 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2023-02-14 22:04:51,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2023-02-14 22:04:51,644 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2023-02-14 22:04:51,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-02-14 22:04:51,644 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 22:04:51,645 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 22:04:51,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-14 22:04:51,645 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 22:04:51,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 22:04:51,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1044113915, now seen corresponding path program 1 times [2023-02-14 22:04:51,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 22:04:51,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432811342] [2023-02-14 22:04:51,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 22:04:51,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 22:04:51,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:04:51,856 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-14 22:04:51,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 22:04:51,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432811342] [2023-02-14 22:04:51,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432811342] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 22:04:51,858 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 22:04:51,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-14 22:04:51,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28490139] [2023-02-14 22:04:51,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 22:04:51,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-14 22:04:51,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 22:04:51,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-14 22:04:51,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-14 22:04:51,860 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 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) [2023-02-14 22:04:51,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 22:04:51,906 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2023-02-14 22:04:51,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-14 22:04:51,907 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 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 17 [2023-02-14 22:04:51,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 22:04:51,908 INFO L225 Difference]: With dead ends: 26 [2023-02-14 22:04:51,908 INFO L226 Difference]: Without dead ends: 22 [2023-02-14 22:04:51,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-02-14 22:04:51,912 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 10 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 22:04:51,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 27 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 22:04:51,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-02-14 22:04:51,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2023-02-14 22:04:51,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.15) internal successors, (23), 20 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) [2023-02-14 22:04:51,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2023-02-14 22:04:51,921 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 17 [2023-02-14 22:04:51,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 22:04:51,921 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2023-02-14 22:04:51,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 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) [2023-02-14 22:04:51,922 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2023-02-14 22:04:51,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-02-14 22:04:51,922 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 22:04:51,923 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 22:04:51,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-14 22:04:51,923 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 22:04:51,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 22:04:51,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1654199858, now seen corresponding path program 1 times [2023-02-14 22:04:51,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 22:04:51,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623306869] [2023-02-14 22:04:51,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 22:04:51,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 22:04:51,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:04:52,055 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 22:04:52,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 22:04:52,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623306869] [2023-02-14 22:04:52,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623306869] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 22:04:52,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [765834530] [2023-02-14 22:04:52,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 22:04:52,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 22:04:52,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 22:04:52,059 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) [2023-02-14 22:04:52,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-14 22:04:52,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:04:52,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-14 22:04:52,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 22:04:52,181 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 22:04:52,181 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 22:04:52,215 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 22:04:52,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [765834530] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 22:04:52,216 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 22:04:52,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2023-02-14 22:04:52,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633417628] [2023-02-14 22:04:52,216 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 22:04:52,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-14 22:04:52,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 22:04:52,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-14 22:04:52,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-02-14 22:04:52,217 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 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) [2023-02-14 22:04:52,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 22:04:52,275 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2023-02-14 22:04:52,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-14 22:04:52,275 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 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) Word has length 20 [2023-02-14 22:04:52,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 22:04:52,276 INFO L225 Difference]: With dead ends: 42 [2023-02-14 22:04:52,276 INFO L226 Difference]: Without dead ends: 28 [2023-02-14 22:04:52,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 32 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2023-02-14 22:04:52,277 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 18 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 22:04:52,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 21 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 22:04:52,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-02-14 22:04:52,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 24. [2023-02-14 22:04:52,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 23 states have internal predecessors, (26), 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) [2023-02-14 22:04:52,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2023-02-14 22:04:52,280 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 20 [2023-02-14 22:04:52,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 22:04:52,280 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2023-02-14 22:04:52,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 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) [2023-02-14 22:04:52,281 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2023-02-14 22:04:52,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-02-14 22:04:52,281 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 22:04:52,281 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 22:04:52,288 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-14 22:04:52,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 22:04:52,491 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 22:04:52,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 22:04:52,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1179965024, now seen corresponding path program 2 times [2023-02-14 22:04:52,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 22:04:52,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156566128] [2023-02-14 22:04:52,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 22:04:52,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 22:04:52,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:04:52,940 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 22:04:52,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 22:04:52,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156566128] [2023-02-14 22:04:52,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156566128] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 22:04:52,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104148709] [2023-02-14 22:04:52,941 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-14 22:04:52,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 22:04:52,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 22:04:52,942 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) [2023-02-14 22:04:52,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-14 22:04:52,985 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-14 22:04:52,986 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 22:04:52,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 31 conjunts are in the unsatisfiable core [2023-02-14 22:04:52,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 22:04:53,084 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 [2023-02-14 22:04:53,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:04:53,262 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2023-02-14 22:04:53,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:04:53,429 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-02-14 22:04:53,431 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 41 [2023-02-14 22:04:53,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:04:53,600 INFO L321 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2023-02-14 22:04:53,601 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 13 [2023-02-14 22:04:53,631 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 22:04:53,631 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 22:04:53,925 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 92 treesize of output 86 [2023-02-14 22:04:54,022 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 22:04:54,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2104148709] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 22:04:54,022 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 22:04:54,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 16, 15] total 37 [2023-02-14 22:04:54,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780111745] [2023-02-14 22:04:54,023 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 22:04:54,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-02-14 22:04:54,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 22:04:54,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-02-14 22:04:54,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=259, Invalid=1073, Unknown=0, NotChecked=0, Total=1332 [2023-02-14 22:04:54,024 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand has 37 states, 37 states have (on average 1.5945945945945945) internal successors, (59), 37 states have internal predecessors, (59), 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) [2023-02-14 22:04:55,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 22:04:55,735 INFO L93 Difference]: Finished difference Result 60 states and 72 transitions. [2023-02-14 22:04:55,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-02-14 22:04:55,736 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.5945945945945945) internal successors, (59), 37 states have internal predecessors, (59), 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 23 [2023-02-14 22:04:55,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 22:04:55,736 INFO L225 Difference]: With dead ends: 60 [2023-02-14 22:04:55,736 INFO L226 Difference]: Without dead ends: 33 [2023-02-14 22:04:55,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1308 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=847, Invalid=3443, Unknown=0, NotChecked=0, Total=4290 [2023-02-14 22:04:55,738 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 110 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 335 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-14 22:04:55,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 53 Invalid, 424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 335 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-14 22:04:55,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-02-14 22:04:55,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 30. [2023-02-14 22:04:55,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.103448275862069) internal successors, (32), 29 states have internal predecessors, (32), 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) [2023-02-14 22:04:55,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2023-02-14 22:04:55,742 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 23 [2023-02-14 22:04:55,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 22:04:55,742 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2023-02-14 22:04:55,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.5945945945945945) internal successors, (59), 37 states have internal predecessors, (59), 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) [2023-02-14 22:04:55,742 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2023-02-14 22:04:55,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-02-14 22:04:55,743 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 22:04:55,743 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 22:04:55,751 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-14 22:04:55,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 22:04:55,948 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 22:04:55,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 22:04:55,949 INFO L85 PathProgramCache]: Analyzing trace with hash -690020773, now seen corresponding path program 3 times [2023-02-14 22:04:55,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 22:04:55,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317813419] [2023-02-14 22:04:55,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 22:04:55,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 22:04:55,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:04:56,692 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 22:04:56,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 22:04:56,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317813419] [2023-02-14 22:04:56,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317813419] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 22:04:56,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726230159] [2023-02-14 22:04:56,693 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-14 22:04:56,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 22:04:56,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 22:04:56,694 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) [2023-02-14 22:04:56,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-14 22:04:56,739 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-02-14 22:04:56,739 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 22:04:56,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 39 conjunts are in the unsatisfiable core [2023-02-14 22:04:56,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 22:04:56,774 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 [2023-02-14 22:04:56,849 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 0 case distinctions, treesize of input 28 treesize of output 27 [2023-02-14 22:04:57,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:04:57,026 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 22:04:57,027 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 37 [2023-02-14 22:04:57,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:04:57,151 INFO L321 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2023-02-14 22:04:57,151 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 56 [2023-02-14 22:04:57,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:04:57,332 INFO L321 Elim1Store]: treesize reduction 56, result has 1.8 percent of original size [2023-02-14 22:04:57,333 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 65 treesize of output 65 [2023-02-14 22:04:57,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:04:57,538 INFO L321 Elim1Store]: treesize reduction 34, result has 17.1 percent of original size [2023-02-14 22:04:57,538 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 52 treesize of output 21 [2023-02-14 22:04:57,575 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-14 22:04:57,575 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 22:05:00,472 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 22:05:00,473 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 574 treesize of output 1 [2023-02-14 22:05:00,474 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-14 22:05:00,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [726230159] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 22:05:00,475 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 22:05:00,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19, 18] total 50 [2023-02-14 22:05:00,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123543917] [2023-02-14 22:05:00,475 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 22:05:00,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-02-14 22:05:00,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 22:05:00,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-02-14 22:05:00,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=345, Invalid=2104, Unknown=1, NotChecked=0, Total=2450 [2023-02-14 22:05:00,480 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand has 50 states, 50 states have (on average 1.48) internal successors, (74), 50 states have internal predecessors, (74), 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) [2023-02-14 22:05:06,098 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-14 22:05:10,190 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-14 22:05:15,025 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-02-14 22:05:17,049 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-02-14 22:05:17,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 22:05:17,887 INFO L93 Difference]: Finished difference Result 49 states and 55 transitions. [2023-02-14 22:05:17,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-02-14 22:05:17,887 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 1.48) internal successors, (74), 50 states have internal predecessors, (74), 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 [2023-02-14 22:05:17,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 22:05:17,888 INFO L225 Difference]: With dead ends: 49 [2023-02-14 22:05:17,888 INFO L226 Difference]: Without dead ends: 35 [2023-02-14 22:05:17,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1590 ImplicationChecksByTransitivity, 12.1s TimeCoverageRelationStatistics Valid=887, Invalid=4811, Unknown=2, NotChecked=0, Total=5700 [2023-02-14 22:05:17,890 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 87 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 82 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2023-02-14 22:05:17,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 80 Invalid, 601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 515 Invalid, 4 Unknown, 0 Unchecked, 8.6s Time] [2023-02-14 22:05:17,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-02-14 22:05:17,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2023-02-14 22:05:17,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.09375) internal successors, (35), 32 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) [2023-02-14 22:05:17,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2023-02-14 22:05:17,894 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 29 [2023-02-14 22:05:17,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 22:05:17,894 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2023-02-14 22:05:17,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 1.48) internal successors, (74), 50 states have internal predecessors, (74), 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) [2023-02-14 22:05:17,895 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2023-02-14 22:05:17,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-02-14 22:05:17,895 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 22:05:17,895 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 22:05:17,904 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-14 22:05:18,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 22:05:18,100 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 22:05:18,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 22:05:18,100 INFO L85 PathProgramCache]: Analyzing trace with hash 900913518, now seen corresponding path program 4 times [2023-02-14 22:05:18,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 22:05:18,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62804470] [2023-02-14 22:05:18,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 22:05:18,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 22:05:18,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:05:18,188 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 15 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 22:05:18,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 22:05:18,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62804470] [2023-02-14 22:05:18,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62804470] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 22:05:18,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086483091] [2023-02-14 22:05:18,188 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-14 22:05:18,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 22:05:18,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 22:05:18,190 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) [2023-02-14 22:05:18,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-14 22:05:18,236 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-14 22:05:18,236 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 22:05:18,237 WARN L261 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 52 conjunts are in the unsatisfiable core [2023-02-14 22:05:18,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 22:05:18,245 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 [2023-02-14 22:05:18,268 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 0 case distinctions, treesize of input 28 treesize of output 27 [2023-02-14 22:05:18,331 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 22:05:18,331 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 1 case distinctions, treesize of input 40 treesize of output 42 [2023-02-14 22:05:18,527 INFO L321 Elim1Store]: treesize reduction 78, result has 49.4 percent of original size [2023-02-14 22:05:18,528 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 6 case distinctions, treesize of input 47 treesize of output 92 [2023-02-14 22:05:19,188 INFO L321 Elim1Store]: treesize reduction 788, result has 22.1 percent of original size [2023-02-14 22:05:19,189 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 44 case distinctions, treesize of input 289 treesize of output 375 [2023-02-14 22:05:21,189 INFO L321 Elim1Store]: treesize reduction 896, result has 22.1 percent of original size [2023-02-14 22:05:21,190 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 54 case distinctions, treesize of input 296 treesize of output 401 [2023-02-14 22:05:24,889 INFO L321 Elim1Store]: treesize reduction 1565, result has 21.9 percent of original size [2023-02-14 22:05:24,890 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 104 case distinctions, treesize of input 487 treesize of output 676