./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+cfa-reducer.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 b8f220cadba131cee309fef082c623cdd627c534b9e708cc4a4f1dd2aa7336b9 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 07:09:54,465 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 07:09:54,467 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 07:09:54,511 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 07:09:54,511 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 07:09:54,513 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 07:09:54,515 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 07:09:54,518 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 07:09:54,520 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 07:09:54,524 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 07:09:54,525 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 07:09:54,527 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 07:09:54,527 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 07:09:54,529 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 07:09:54,530 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 07:09:54,532 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 07:09:54,533 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 07:09:54,535 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 07:09:54,536 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 07:09:54,541 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 07:09:54,542 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 07:09:54,543 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 07:09:54,544 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 07:09:54,545 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 07:09:54,546 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 07:09:54,552 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 07:09:54,553 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 07:09:54,553 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 07:09:54,554 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 07:09:54,554 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 07:09:54,555 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 07:09:54,556 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 07:09:54,557 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 07:09:54,558 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 07:09:54,558 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 07:09:54,559 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 07:09:54,559 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 07:09:54,560 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 07:09:54,560 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 07:09:54,560 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 07:09:54,562 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 07:09:54,563 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 07:09:54,563 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 07:09:54,593 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 07:09:54,593 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 07:09:54,594 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 07:09:54,594 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 07:09:54,595 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 07:09:54,595 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 07:09:54,596 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 07:09:54,596 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 07:09:54,596 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 07:09:54,597 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 07:09:54,597 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 07:09:54,597 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 07:09:54,597 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 07:09:54,598 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 07:09:54,598 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 07:09:54,598 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 07:09:54,598 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 07:09:54,598 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 07:09:54,598 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 07:09:54,600 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 07:09:54,600 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 07:09:54,600 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 07:09:54,600 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 07:09:54,600 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 07:09:54,601 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 07:09:54,601 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 07:09:54,601 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 07:09:54,601 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 07:09:54,601 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 07:09:54,602 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 07:09:54,602 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 07:09:54,602 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 07:09:54,602 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 07:09:54,603 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b8f220cadba131cee309fef082c623cdd627c534b9e708cc4a4f1dd2aa7336b9 [2022-07-12 07:09:54,834 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 07:09:54,861 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 07:09:54,863 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 07:09:54,864 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 07:09:54,864 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 07:09:54,865 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2022-07-12 07:09:54,923 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/609c97aed/b4fa491201844dd299ba262037e22351/FLAG9a79019bc [2022-07-12 07:09:55,345 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 07:09:55,346 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2022-07-12 07:09:55,363 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/609c97aed/b4fa491201844dd299ba262037e22351/FLAG9a79019bc [2022-07-12 07:09:55,711 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/609c97aed/b4fa491201844dd299ba262037e22351 [2022-07-12 07:09:55,713 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 07:09:55,714 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 07:09:55,718 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 07:09:55,718 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 07:09:55,725 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 07:09:55,725 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 07:09:55" (1/1) ... [2022-07-12 07:09:55,726 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46b15e46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:09:55, skipping insertion in model container [2022-07-12 07:09:55,726 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 07:09:55" (1/1) ... [2022-07-12 07:09:55,733 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 07:09:55,781 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 07:09:56,003 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c[6322,6335] [2022-07-12 07:09:56,031 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 07:09:56,042 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 07:09:56,074 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c[6322,6335] [2022-07-12 07:09:56,099 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 07:09:56,121 INFO L208 MainTranslator]: Completed translation [2022-07-12 07:09:56,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:09:56 WrapperNode [2022-07-12 07:09:56,122 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 07:09:56,123 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 07:09:56,123 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 07:09:56,124 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 07:09:56,139 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:09:56" (1/1) ... [2022-07-12 07:09:56,148 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:09:56" (1/1) ... [2022-07-12 07:09:56,185 INFO L137 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 511 [2022-07-12 07:09:56,185 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 07:09:56,186 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 07:09:56,186 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 07:09:56,186 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 07:09:56,193 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:09:56" (1/1) ... [2022-07-12 07:09:56,193 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:09:56" (1/1) ... [2022-07-12 07:09:56,196 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:09:56" (1/1) ... [2022-07-12 07:09:56,197 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:09:56" (1/1) ... [2022-07-12 07:09:56,203 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:09:56" (1/1) ... [2022-07-12 07:09:56,213 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:09:56" (1/1) ... [2022-07-12 07:09:56,215 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:09:56" (1/1) ... [2022-07-12 07:09:56,218 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 07:09:56,219 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 07:09:56,219 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 07:09:56,220 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 07:09:56,220 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:09:56" (1/1) ... [2022-07-12 07:09:56,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 07:09:56,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 07:09:56,253 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 07:09:56,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 07:09:56,287 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 07:09:56,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 07:09:56,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 07:09:56,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 07:09:56,375 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 07:09:56,376 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 07:09:56,794 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 07:09:56,801 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 07:09:56,804 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-12 07:09:56,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 07:09:56 BoogieIcfgContainer [2022-07-12 07:09:56,807 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 07:09:56,809 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 07:09:56,809 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 07:09:56,812 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 07:09:56,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 07:09:55" (1/3) ... [2022-07-12 07:09:56,813 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3972f024 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 07:09:56, skipping insertion in model container [2022-07-12 07:09:56,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:09:56" (2/3) ... [2022-07-12 07:09:56,814 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3972f024 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 07:09:56, skipping insertion in model container [2022-07-12 07:09:56,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 07:09:56" (3/3) ... [2022-07-12 07:09:56,815 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2022-07-12 07:09:56,827 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 07:09:56,827 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 07:09:56,883 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 07:09:56,888 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2e1477f1, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4aea7d32 [2022-07-12 07:09:56,889 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 07:09:56,893 INFO L276 IsEmpty]: Start isEmpty. Operand has 131 states, 129 states have (on average 1.7054263565891472) internal successors, (220), 130 states have internal predecessors, (220), 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) [2022-07-12 07:09:56,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-07-12 07:09:56,901 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:09:56,901 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:09:56,902 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:09:56,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:09:56,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1065941507, now seen corresponding path program 1 times [2022-07-12 07:09:56,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:09:56,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049697980] [2022-07-12 07:09:56,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:09:56,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:09:57,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:09:57,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:09:57,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:09:57,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049697980] [2022-07-12 07:09:57,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049697980] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:09:57,298 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:09:57,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 07:09:57,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709020900] [2022-07-12 07:09:57,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:09:57,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 07:09:57,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:09:57,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 07:09:57,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:09:57,339 INFO L87 Difference]: Start difference. First operand has 131 states, 129 states have (on average 1.7054263565891472) internal successors, (220), 130 states have internal predecessors, (220), 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 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2022-07-12 07:09:57,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:09:57,415 INFO L93 Difference]: Finished difference Result 307 states and 498 transitions. [2022-07-12 07:09:57,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 07:09:57,417 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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 60 [2022-07-12 07:09:57,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:09:57,435 INFO L225 Difference]: With dead ends: 307 [2022-07-12 07:09:57,436 INFO L226 Difference]: Without dead ends: 205 [2022-07-12 07:09:57,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:09:57,443 INFO L413 NwaCegarLoop]: 318 mSDtfsCounter, 158 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:09:57,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 467 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:09:57,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2022-07-12 07:09:57,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 203. [2022-07-12 07:09:57,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 202 states have (on average 1.5) internal successors, (303), 202 states have internal predecessors, (303), 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) [2022-07-12 07:09:57,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 303 transitions. [2022-07-12 07:09:57,511 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 303 transitions. Word has length 60 [2022-07-12 07:09:57,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:09:57,511 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 303 transitions. [2022-07-12 07:09:57,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2022-07-12 07:09:57,513 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 303 transitions. [2022-07-12 07:09:57,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-07-12 07:09:57,516 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:09:57,516 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:09:57,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 07:09:57,517 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:09:57,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:09:57,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1987406881, now seen corresponding path program 1 times [2022-07-12 07:09:57,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:09:57,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695539283] [2022-07-12 07:09:57,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:09:57,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:09:57,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:09:57,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:09:57,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:09:57,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695539283] [2022-07-12 07:09:57,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695539283] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:09:57,610 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:09:57,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 07:09:57,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19071889] [2022-07-12 07:09:57,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:09:57,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 07:09:57,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:09:57,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 07:09:57,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:09:57,613 INFO L87 Difference]: Start difference. First operand 203 states and 303 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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) [2022-07-12 07:09:57,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:09:57,657 INFO L93 Difference]: Finished difference Result 507 states and 787 transitions. [2022-07-12 07:09:57,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 07:09:57,658 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 61 [2022-07-12 07:09:57,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:09:57,660 INFO L225 Difference]: With dead ends: 507 [2022-07-12 07:09:57,661 INFO L226 Difference]: Without dead ends: 339 [2022-07-12 07:09:57,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:09:57,663 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 127 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:09:57,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 402 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:09:57,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2022-07-12 07:09:57,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 337. [2022-07-12 07:09:57,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 336 states have (on average 1.5357142857142858) internal successors, (516), 336 states have internal predecessors, (516), 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) [2022-07-12 07:09:57,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 516 transitions. [2022-07-12 07:09:57,695 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 516 transitions. Word has length 61 [2022-07-12 07:09:57,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:09:57,696 INFO L495 AbstractCegarLoop]: Abstraction has 337 states and 516 transitions. [2022-07-12 07:09:57,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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) [2022-07-12 07:09:57,697 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 516 transitions. [2022-07-12 07:09:57,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-12 07:09:57,698 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:09:57,698 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:09:57,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 07:09:57,699 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:09:57,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:09:57,700 INFO L85 PathProgramCache]: Analyzing trace with hash 175155952, now seen corresponding path program 1 times [2022-07-12 07:09:57,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:09:57,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402028417] [2022-07-12 07:09:57,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:09:57,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:09:57,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:09:57,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:09:57,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:09:57,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402028417] [2022-07-12 07:09:57,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402028417] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:09:57,804 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:09:57,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 07:09:57,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345525357] [2022-07-12 07:09:57,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:09:57,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 07:09:57,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:09:57,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 07:09:57,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:09:57,807 INFO L87 Difference]: Start difference. First operand 337 states and 516 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2022-07-12 07:09:57,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:09:57,855 INFO L93 Difference]: Finished difference Result 877 states and 1374 transitions. [2022-07-12 07:09:57,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 07:09:57,856 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 62 [2022-07-12 07:09:57,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:09:57,862 INFO L225 Difference]: With dead ends: 877 [2022-07-12 07:09:57,862 INFO L226 Difference]: Without dead ends: 575 [2022-07-12 07:09:57,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:09:57,871 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 122 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:09:57,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 387 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:09:57,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2022-07-12 07:09:57,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 573. [2022-07-12 07:09:57,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 572 states have (on average 1.5524475524475525) internal successors, (888), 572 states have internal predecessors, (888), 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) [2022-07-12 07:09:57,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 888 transitions. [2022-07-12 07:09:57,934 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 888 transitions. Word has length 62 [2022-07-12 07:09:57,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:09:57,935 INFO L495 AbstractCegarLoop]: Abstraction has 573 states and 888 transitions. [2022-07-12 07:09:57,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2022-07-12 07:09:57,935 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 888 transitions. [2022-07-12 07:09:57,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-12 07:09:57,941 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:09:57,942 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:09:57,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 07:09:57,942 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:09:57,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:09:57,945 INFO L85 PathProgramCache]: Analyzing trace with hash -546721508, now seen corresponding path program 1 times [2022-07-12 07:09:57,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:09:57,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372876625] [2022-07-12 07:09:57,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:09:57,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:09:57,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:09:58,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:09:58,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:09:58,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372876625] [2022-07-12 07:09:58,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372876625] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:09:58,062 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:09:58,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 07:09:58,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237301922] [2022-07-12 07:09:58,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:09:58,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 07:09:58,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:09:58,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 07:09:58,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:09:58,064 INFO L87 Difference]: Start difference. First operand 573 states and 888 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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) [2022-07-12 07:09:58,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:09:58,139 INFO L93 Difference]: Finished difference Result 1521 states and 2386 transitions. [2022-07-12 07:09:58,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 07:09:58,141 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 63 [2022-07-12 07:09:58,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:09:58,145 INFO L225 Difference]: With dead ends: 1521 [2022-07-12 07:09:58,146 INFO L226 Difference]: Without dead ends: 983 [2022-07-12 07:09:58,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:09:58,157 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 117 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:09:58,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 372 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:09:58,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 983 states. [2022-07-12 07:09:58,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 983 to 981. [2022-07-12 07:09:58,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 981 states, 980 states have (on average 1.5551020408163265) internal successors, (1524), 980 states have internal predecessors, (1524), 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) [2022-07-12 07:09:58,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 981 states to 981 states and 1524 transitions. [2022-07-12 07:09:58,226 INFO L78 Accepts]: Start accepts. Automaton has 981 states and 1524 transitions. Word has length 63 [2022-07-12 07:09:58,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:09:58,227 INFO L495 AbstractCegarLoop]: Abstraction has 981 states and 1524 transitions. [2022-07-12 07:09:58,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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) [2022-07-12 07:09:58,228 INFO L276 IsEmpty]: Start isEmpty. Operand 981 states and 1524 transitions. [2022-07-12 07:09:58,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-12 07:09:58,229 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:09:58,229 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:09:58,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 07:09:58,229 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:09:58,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:09:58,230 INFO L85 PathProgramCache]: Analyzing trace with hash -8861705, now seen corresponding path program 1 times [2022-07-12 07:09:58,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:09:58,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579273520] [2022-07-12 07:09:58,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:09:58,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:09:58,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:09:58,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:09:58,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:09:58,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579273520] [2022-07-12 07:09:58,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579273520] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:09:58,352 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:09:58,352 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 07:09:58,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119288201] [2022-07-12 07:09:58,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:09:58,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 07:09:58,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:09:58,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 07:09:58,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 07:09:58,355 INFO L87 Difference]: Start difference. First operand 981 states and 1524 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 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) [2022-07-12 07:09:58,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:09:58,932 INFO L93 Difference]: Finished difference Result 6657 states and 10458 transitions. [2022-07-12 07:09:58,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 07:09:58,933 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 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 64 [2022-07-12 07:09:58,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:09:58,957 INFO L225 Difference]: With dead ends: 6657 [2022-07-12 07:09:58,957 INFO L226 Difference]: Without dead ends: 5711 [2022-07-12 07:09:58,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-07-12 07:09:58,960 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 1940 mSDsluCounter, 1480 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1940 SdHoareTripleChecker+Valid, 1661 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 07:09:58,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1940 Valid, 1661 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 07:09:58,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5711 states. [2022-07-12 07:09:59,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5711 to 1925. [2022-07-12 07:09:59,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1925 states, 1924 states have (on average 1.5488565488565489) internal successors, (2980), 1924 states have internal predecessors, (2980), 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) [2022-07-12 07:09:59,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1925 states to 1925 states and 2980 transitions. [2022-07-12 07:09:59,197 INFO L78 Accepts]: Start accepts. Automaton has 1925 states and 2980 transitions. Word has length 64 [2022-07-12 07:09:59,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:09:59,197 INFO L495 AbstractCegarLoop]: Abstraction has 1925 states and 2980 transitions. [2022-07-12 07:09:59,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 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) [2022-07-12 07:09:59,197 INFO L276 IsEmpty]: Start isEmpty. Operand 1925 states and 2980 transitions. [2022-07-12 07:09:59,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-12 07:09:59,198 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:09:59,198 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:09:59,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 07:09:59,199 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:09:59,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:09:59,200 INFO L85 PathProgramCache]: Analyzing trace with hash -294169095, now seen corresponding path program 1 times [2022-07-12 07:09:59,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:09:59,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057544573] [2022-07-12 07:09:59,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:09:59,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:09:59,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:09:59,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:09:59,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:09:59,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057544573] [2022-07-12 07:09:59,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057544573] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:09:59,303 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:09:59,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 07:09:59,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184540014] [2022-07-12 07:09:59,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:09:59,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 07:09:59,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:09:59,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 07:09:59,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-07-12 07:09:59,305 INFO L87 Difference]: Start difference. First operand 1925 states and 2980 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 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) [2022-07-12 07:10:00,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:10:00,403 INFO L93 Difference]: Finished difference Result 10095 states and 15593 transitions. [2022-07-12 07:10:00,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 07:10:00,403 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 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 65 [2022-07-12 07:10:00,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:10:00,435 INFO L225 Difference]: With dead ends: 10095 [2022-07-12 07:10:00,435 INFO L226 Difference]: Without dead ends: 8205 [2022-07-12 07:10:00,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-07-12 07:10:00,442 INFO L413 NwaCegarLoop]: 489 mSDtfsCounter, 627 mSDsluCounter, 726 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 627 SdHoareTripleChecker+Valid, 1215 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 07:10:00,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [627 Valid, 1215 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 07:10:00,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8205 states. [2022-07-12 07:10:01,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8205 to 8197. [2022-07-12 07:10:01,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8197 states, 8196 states have (on average 1.5387994143484627) internal successors, (12612), 8196 states have internal predecessors, (12612), 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) [2022-07-12 07:10:01,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8197 states to 8197 states and 12612 transitions. [2022-07-12 07:10:01,381 INFO L78 Accepts]: Start accepts. Automaton has 8197 states and 12612 transitions. Word has length 65 [2022-07-12 07:10:01,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:10:01,381 INFO L495 AbstractCegarLoop]: Abstraction has 8197 states and 12612 transitions. [2022-07-12 07:10:01,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 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) [2022-07-12 07:10:01,382 INFO L276 IsEmpty]: Start isEmpty. Operand 8197 states and 12612 transitions. [2022-07-12 07:10:01,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-12 07:10:01,383 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:10:01,383 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:10:01,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 07:10:01,384 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:10:01,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:10:01,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1075132642, now seen corresponding path program 1 times [2022-07-12 07:10:01,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:10:01,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932815125] [2022-07-12 07:10:01,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:10:01,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:10:01,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:10:01,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:10:01,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:10:01,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932815125] [2022-07-12 07:10:01,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932815125] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:10:01,432 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:10:01,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 07:10:01,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793614338] [2022-07-12 07:10:01,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:10:01,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 07:10:01,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:10:01,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 07:10:01,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:10:01,435 INFO L87 Difference]: Start difference. First operand 8197 states and 12612 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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) [2022-07-12 07:10:02,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:10:02,739 INFO L93 Difference]: Finished difference Result 22761 states and 34886 transitions. [2022-07-12 07:10:02,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 07:10:02,739 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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 65 [2022-07-12 07:10:02,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:10:02,790 INFO L225 Difference]: With dead ends: 22761 [2022-07-12 07:10:02,791 INFO L226 Difference]: Without dead ends: 14599 [2022-07-12 07:10:02,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:10:02,805 INFO L413 NwaCegarLoop]: 309 mSDtfsCounter, 136 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:10:02,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 450 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:10:02,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14599 states. [2022-07-12 07:10:04,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14599 to 14597. [2022-07-12 07:10:04,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14597 states, 14596 states have (on average 1.5174020279528637) internal successors, (22148), 14596 states have internal predecessors, (22148), 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) [2022-07-12 07:10:04,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14597 states to 14597 states and 22148 transitions. [2022-07-12 07:10:04,331 INFO L78 Accepts]: Start accepts. Automaton has 14597 states and 22148 transitions. Word has length 65 [2022-07-12 07:10:04,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:10:04,332 INFO L495 AbstractCegarLoop]: Abstraction has 14597 states and 22148 transitions. [2022-07-12 07:10:04,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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) [2022-07-12 07:10:04,332 INFO L276 IsEmpty]: Start isEmpty. Operand 14597 states and 22148 transitions. [2022-07-12 07:10:04,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-12 07:10:04,333 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:10:04,333 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:10:04,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 07:10:04,334 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:10:04,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:10:04,334 INFO L85 PathProgramCache]: Analyzing trace with hash -938816400, now seen corresponding path program 1 times [2022-07-12 07:10:04,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:10:04,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055951289] [2022-07-12 07:10:04,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:10:04,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:10:04,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:10:04,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:10:04,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:10:04,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055951289] [2022-07-12 07:10:04,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055951289] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:10:04,386 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:10:04,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 07:10:04,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149690129] [2022-07-12 07:10:04,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:10:04,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 07:10:04,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:10:04,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 07:10:04,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 07:10:04,388 INFO L87 Difference]: Start difference. First operand 14597 states and 22148 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 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) [2022-07-12 07:10:07,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:10:07,395 INFO L93 Difference]: Finished difference Result 43721 states and 66374 transitions. [2022-07-12 07:10:07,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 07:10:07,396 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 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 67 [2022-07-12 07:10:07,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:10:07,475 INFO L225 Difference]: With dead ends: 43721 [2022-07-12 07:10:07,476 INFO L226 Difference]: Without dead ends: 29159 [2022-07-12 07:10:07,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-12 07:10:07,502 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 775 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 775 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 07:10:07,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [775 Valid, 212 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 07:10:07,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29159 states. [2022-07-12 07:10:10,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29159 to 29157. [2022-07-12 07:10:10,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29157 states, 29156 states have (on average 1.509260529565098) internal successors, (44004), 29156 states have internal predecessors, (44004), 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) [2022-07-12 07:10:10,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29157 states to 29157 states and 44004 transitions. [2022-07-12 07:10:10,338 INFO L78 Accepts]: Start accepts. Automaton has 29157 states and 44004 transitions. Word has length 67 [2022-07-12 07:10:10,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:10:10,339 INFO L495 AbstractCegarLoop]: Abstraction has 29157 states and 44004 transitions. [2022-07-12 07:10:10,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 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) [2022-07-12 07:10:10,340 INFO L276 IsEmpty]: Start isEmpty. Operand 29157 states and 44004 transitions. [2022-07-12 07:10:10,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-12 07:10:10,341 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:10:10,341 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:10:10,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 07:10:10,342 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:10:10,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:10:10,342 INFO L85 PathProgramCache]: Analyzing trace with hash 831155307, now seen corresponding path program 1 times [2022-07-12 07:10:10,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:10:10,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844129395] [2022-07-12 07:10:10,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:10:10,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:10:10,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:10:10,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:10:10,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:10:10,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844129395] [2022-07-12 07:10:10,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844129395] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:10:10,417 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:10:10,418 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 07:10:10,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422025245] [2022-07-12 07:10:10,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:10:10,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 07:10:10,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:10:10,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 07:10:10,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 07:10:10,420 INFO L87 Difference]: Start difference. First operand 29157 states and 44004 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 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) [2022-07-12 07:10:16,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:10:16,334 INFO L93 Difference]: Finished difference Result 59559 states and 89253 transitions. [2022-07-12 07:10:16,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 07:10:16,335 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 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 67 [2022-07-12 07:10:16,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:10:16,470 INFO L225 Difference]: With dead ends: 59559 [2022-07-12 07:10:16,470 INFO L226 Difference]: Without dead ends: 59557 [2022-07-12 07:10:16,492 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-12 07:10:16,493 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 284 mSDsluCounter, 621 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 891 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:10:16,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [284 Valid, 891 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:10:16,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59557 states. [2022-07-12 07:10:19,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59557 to 30437. [2022-07-12 07:10:19,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30437 states, 30436 states have (on average 1.4878433434091207) internal successors, (45284), 30436 states have internal predecessors, (45284), 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) [2022-07-12 07:10:19,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30437 states to 30437 states and 45284 transitions. [2022-07-12 07:10:19,842 INFO L78 Accepts]: Start accepts. Automaton has 30437 states and 45284 transitions. Word has length 67 [2022-07-12 07:10:19,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:10:19,842 INFO L495 AbstractCegarLoop]: Abstraction has 30437 states and 45284 transitions. [2022-07-12 07:10:19,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 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) [2022-07-12 07:10:19,843 INFO L276 IsEmpty]: Start isEmpty. Operand 30437 states and 45284 transitions. [2022-07-12 07:10:19,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-12 07:10:19,844 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:10:19,844 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:10:19,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 07:10:19,844 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:10:19,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:10:19,845 INFO L85 PathProgramCache]: Analyzing trace with hash 6583829, now seen corresponding path program 1 times [2022-07-12 07:10:19,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:10:19,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381513705] [2022-07-12 07:10:19,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:10:19,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:10:19,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:10:19,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:10:19,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:10:19,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381513705] [2022-07-12 07:10:19,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381513705] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:10:19,881 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:10:19,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 07:10:19,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342075653] [2022-07-12 07:10:19,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:10:19,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 07:10:19,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:10:19,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 07:10:19,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:10:19,883 INFO L87 Difference]: Start difference. First operand 30437 states and 45284 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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) [2022-07-12 07:10:24,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:10:24,925 INFO L93 Difference]: Finished difference Result 74187 states and 110320 transitions. [2022-07-12 07:10:24,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 07:10:24,926 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 68 [2022-07-12 07:10:24,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:10:25,016 INFO L225 Difference]: With dead ends: 74187 [2022-07-12 07:10:25,016 INFO L226 Difference]: Without dead ends: 43785 [2022-07-12 07:10:25,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:10:25,065 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 107 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:10:25,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 328 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:10:25,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43785 states. [2022-07-12 07:10:29,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43785 to 43783. [2022-07-12 07:10:29,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43783 states, 43782 states have (on average 1.4796491708921475) internal successors, (64782), 43782 states have internal predecessors, (64782), 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) [2022-07-12 07:10:29,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43783 states to 43783 states and 64782 transitions. [2022-07-12 07:10:29,503 INFO L78 Accepts]: Start accepts. Automaton has 43783 states and 64782 transitions. Word has length 68 [2022-07-12 07:10:29,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:10:29,503 INFO L495 AbstractCegarLoop]: Abstraction has 43783 states and 64782 transitions. [2022-07-12 07:10:29,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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) [2022-07-12 07:10:29,504 INFO L276 IsEmpty]: Start isEmpty. Operand 43783 states and 64782 transitions. [2022-07-12 07:10:29,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-12 07:10:29,518 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:10:29,518 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:10:29,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 07:10:29,519 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:10:29,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:10:29,519 INFO L85 PathProgramCache]: Analyzing trace with hash -83102152, now seen corresponding path program 1 times [2022-07-12 07:10:29,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:10:29,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627694253] [2022-07-12 07:10:29,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:10:29,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:10:29,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:10:29,664 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 07:10:29,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:10:29,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627694253] [2022-07-12 07:10:29,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627694253] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 07:10:29,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934108751] [2022-07-12 07:10:29,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:10:29,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 07:10:29,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 07:10:29,667 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 07:10:29,670 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 07:10:29,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:10:29,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 23 conjunts are in the unsatisfiable core [2022-07-12 07:10:29,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 07:10:30,039 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 07:10:30,039 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 07:10:30,377 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 07:10:30,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [934108751] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 07:10:30,378 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 07:10:30,378 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 5] total 10 [2022-07-12 07:10:30,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206145466] [2022-07-12 07:10:30,379 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 07:10:30,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 07:10:30,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:10:30,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 07:10:30,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=50, Unknown=0, NotChecked=0, Total=90 [2022-07-12 07:10:30,380 INFO L87 Difference]: Start difference. First operand 43783 states and 64782 transitions. Second operand has 10 states, 10 states have (on average 24.3) internal successors, (243), 10 states have internal predecessors, (243), 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) [2022-07-12 07:10:42,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:10:42,076 INFO L93 Difference]: Finished difference Result 137191 states and 204046 transitions. [2022-07-12 07:10:42,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 07:10:42,077 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 24.3) internal successors, (243), 10 states have internal predecessors, (243), 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 93 [2022-07-12 07:10:42,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:10:42,366 INFO L225 Difference]: With dead ends: 137191 [2022-07-12 07:10:42,368 INFO L226 Difference]: Without dead ends: 106789 [2022-07-12 07:10:42,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 176 SyntacticMatches, 4 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=60, Unknown=0, NotChecked=0, Total=110 [2022-07-12 07:10:42,425 INFO L413 NwaCegarLoop]: 265 mSDtfsCounter, 1154 mSDsluCounter, 1177 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1154 SdHoareTripleChecker+Valid, 1442 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 07:10:42,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1154 Valid, 1442 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 07:10:42,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106789 states.