./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem03_label45.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/eca-rers2012/Problem03_label45.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 e46cda06cd6f3e72cb5a00e680e37793de7d3fd440c55f6638f7eefc5d4b52af --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 00:03:17,473 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 00:03:17,475 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 00:03:17,495 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 00:03:17,495 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 00:03:17,496 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 00:03:17,497 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 00:03:17,498 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 00:03:17,499 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 00:03:17,500 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 00:03:17,501 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 00:03:17,501 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 00:03:17,502 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 00:03:17,502 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 00:03:17,503 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 00:03:17,504 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 00:03:17,504 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 00:03:17,505 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 00:03:17,506 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 00:03:17,507 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 00:03:17,509 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 00:03:17,509 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 00:03:17,510 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 00:03:17,511 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 00:03:17,511 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 00:03:17,514 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 00:03:17,514 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 00:03:17,514 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 00:03:17,515 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 00:03:17,515 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 00:03:17,516 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 00:03:17,516 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 00:03:17,517 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 00:03:17,518 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 00:03:17,518 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 00:03:17,519 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 00:03:17,519 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 00:03:17,520 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 00:03:17,520 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 00:03:17,520 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 00:03:17,521 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 00:03:17,521 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 00:03:17,522 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 00:03:17,537 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 00:03:17,537 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 00:03:17,537 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 00:03:17,537 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 00:03:17,538 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 00:03:17,538 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 00:03:17,539 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 00:03:17,539 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 00:03:17,539 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 00:03:17,539 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 00:03:17,539 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 00:03:17,540 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 00:03:17,540 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 00:03:17,540 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 00:03:17,540 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 00:03:17,540 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 00:03:17,541 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 00:03:17,541 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 00:03:17,541 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 00:03:17,541 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 00:03:17,541 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 00:03:17,541 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 00:03:17,542 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 00:03:17,542 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 00:03:17,542 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 00:03:17,542 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 00:03:17,542 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 00:03:17,542 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 00:03:17,543 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 00:03:17,543 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 00:03:17,543 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 00:03:17,543 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 00:03:17,543 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 00:03:17,543 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e46cda06cd6f3e72cb5a00e680e37793de7d3fd440c55f6638f7eefc5d4b52af [2022-07-12 00:03:17,703 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 00:03:17,720 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 00:03:17,722 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 00:03:17,722 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 00:03:17,723 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 00:03:17,724 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem03_label45.c [2022-07-12 00:03:17,802 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86e3fd518/235d4259f33f4187810eb95eae63d79e/FLAG4a6f472fa [2022-07-12 00:03:18,508 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 00:03:18,508 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label45.c [2022-07-12 00:03:18,521 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86e3fd518/235d4259f33f4187810eb95eae63d79e/FLAG4a6f472fa [2022-07-12 00:03:18,751 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86e3fd518/235d4259f33f4187810eb95eae63d79e [2022-07-12 00:03:18,772 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 00:03:18,773 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 00:03:18,796 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 00:03:18,797 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 00:03:18,802 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 00:03:18,802 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 12:03:18" (1/1) ... [2022-07-12 00:03:18,804 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@98d9e42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:03:18, skipping insertion in model container [2022-07-12 00:03:18,804 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 12:03:18" (1/1) ... [2022-07-12 00:03:18,816 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 00:03:18,961 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 00:03:19,692 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/eca-rers2012/Problem03_label45.c[53653,53666] [2022-07-12 00:03:19,750 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 00:03:19,770 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 00:03:20,060 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/eca-rers2012/Problem03_label45.c[53653,53666] [2022-07-12 00:03:20,077 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 00:03:20,094 INFO L208 MainTranslator]: Completed translation [2022-07-12 00:03:20,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:03:20 WrapperNode [2022-07-12 00:03:20,095 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 00:03:20,096 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 00:03:20,096 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 00:03:20,096 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 00:03:20,102 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:03:20" (1/1) ... [2022-07-12 00:03:20,130 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:03:20" (1/1) ... [2022-07-12 00:03:20,192 INFO L137 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1771 [2022-07-12 00:03:20,192 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 00:03:20,194 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 00:03:20,194 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 00:03:20,194 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 00:03:20,199 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:03:20" (1/1) ... [2022-07-12 00:03:20,200 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:03:20" (1/1) ... [2022-07-12 00:03:20,206 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:03:20" (1/1) ... [2022-07-12 00:03:20,207 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:03:20" (1/1) ... [2022-07-12 00:03:20,269 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:03:20" (1/1) ... [2022-07-12 00:03:20,279 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:03:20" (1/1) ... [2022-07-12 00:03:20,300 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:03:20" (1/1) ... [2022-07-12 00:03:20,311 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 00:03:20,312 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 00:03:20,313 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 00:03:20,313 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 00:03:20,314 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:03:20" (1/1) ... [2022-07-12 00:03:20,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 00:03:20,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 00:03:20,338 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 00:03:20,354 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 00:03:20,368 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 00:03:20,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 00:03:20,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 00:03:20,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 00:03:20,420 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 00:03:20,422 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 00:03:22,036 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 00:03:22,043 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 00:03:22,043 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-12 00:03:22,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 12:03:22 BoogieIcfgContainer [2022-07-12 00:03:22,045 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 00:03:22,046 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 00:03:22,046 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 00:03:22,049 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 00:03:22,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 12:03:18" (1/3) ... [2022-07-12 00:03:22,050 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f9e8af4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 12:03:22, skipping insertion in model container [2022-07-12 00:03:22,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:03:20" (2/3) ... [2022-07-12 00:03:22,050 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f9e8af4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 12:03:22, skipping insertion in model container [2022-07-12 00:03:22,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 12:03:22" (3/3) ... [2022-07-12 00:03:22,051 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem03_label45.c [2022-07-12 00:03:22,061 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 00:03:22,062 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 00:03:22,098 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 00:03:22,103 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@71304c47, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3d60a0cc [2022-07-12 00:03:22,103 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 00:03:22,108 INFO L276 IsEmpty]: Start isEmpty. Operand has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 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 00:03:22,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-07-12 00:03:22,120 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 00:03:22,120 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:03:22,121 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 00:03:22,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 00:03:22,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1107694590, now seen corresponding path program 1 times [2022-07-12 00:03:22,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 00:03:22,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560119077] [2022-07-12 00:03:22,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 00:03:22,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 00:03:22,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 00:03:22,478 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 00:03:22,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 00:03:22,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560119077] [2022-07-12 00:03:22,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560119077] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 00:03:22,480 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 00:03:22,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 00:03:22,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041499606] [2022-07-12 00:03:22,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 00:03:22,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 00:03:22,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 00:03:22,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 00:03:22,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 00:03:22,506 INFO L87 Difference]: Start difference. First operand has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 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 48.0) internal successors, (144), 2 states have internal predecessors, (144), 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 00:03:23,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 00:03:23,257 INFO L93 Difference]: Finished difference Result 840 states and 1490 transitions. [2022-07-12 00:03:23,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 00:03:23,259 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 2 states have internal predecessors, (144), 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 144 [2022-07-12 00:03:23,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 00:03:23,268 INFO L225 Difference]: With dead ends: 840 [2022-07-12 00:03:23,269 INFO L226 Difference]: Without dead ends: 460 [2022-07-12 00:03:23,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 00:03:23,274 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 120 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 688 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-12 00:03:23,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 134 Invalid, 885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [197 Valid, 688 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-12 00:03:23,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2022-07-12 00:03:23,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 445. [2022-07-12 00:03:23,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 444 states have (on average 1.614864864864865) internal successors, (717), 444 states have internal predecessors, (717), 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 00:03:23,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 717 transitions. [2022-07-12 00:03:23,317 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 717 transitions. Word has length 144 [2022-07-12 00:03:23,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 00:03:23,318 INFO L495 AbstractCegarLoop]: Abstraction has 445 states and 717 transitions. [2022-07-12 00:03:23,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 2 states have internal predecessors, (144), 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 00:03:23,318 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 717 transitions. [2022-07-12 00:03:23,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-07-12 00:03:23,323 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 00:03:23,323 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:03:23,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 00:03:23,323 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 00:03:23,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 00:03:23,324 INFO L85 PathProgramCache]: Analyzing trace with hash -235311730, now seen corresponding path program 1 times [2022-07-12 00:03:23,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 00:03:23,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317732199] [2022-07-12 00:03:23,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 00:03:23,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 00:03:23,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 00:03:23,384 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 00:03:23,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 00:03:23,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317732199] [2022-07-12 00:03:23,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317732199] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 00:03:23,385 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 00:03:23,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 00:03:23,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001440484] [2022-07-12 00:03:23,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 00:03:23,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 00:03:23,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 00:03:23,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 00:03:23,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 00:03:23,388 INFO L87 Difference]: Start difference. First operand 445 states and 717 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 2 states have internal predecessors, (150), 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 00:03:23,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 00:03:23,948 INFO L93 Difference]: Finished difference Result 1324 states and 2138 transitions. [2022-07-12 00:03:23,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 00:03:23,949 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 2 states have internal predecessors, (150), 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 150 [2022-07-12 00:03:23,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 00:03:23,953 INFO L225 Difference]: With dead ends: 1324 [2022-07-12 00:03:23,953 INFO L226 Difference]: Without dead ends: 881 [2022-07-12 00:03:23,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 00:03:23,956 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 285 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 695 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 00:03:23,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 125 Invalid, 719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 695 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 00:03:23,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2022-07-12 00:03:23,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 877. [2022-07-12 00:03:23,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 877 states, 876 states have (on average 1.595890410958904) internal successors, (1398), 876 states have internal predecessors, (1398), 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 00:03:23,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1398 transitions. [2022-07-12 00:03:23,981 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1398 transitions. Word has length 150 [2022-07-12 00:03:23,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 00:03:23,982 INFO L495 AbstractCegarLoop]: Abstraction has 877 states and 1398 transitions. [2022-07-12 00:03:23,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 2 states have internal predecessors, (150), 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 00:03:23,982 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1398 transitions. [2022-07-12 00:03:23,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-07-12 00:03:23,989 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 00:03:23,989 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:03:23,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 00:03:23,990 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 00:03:23,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 00:03:23,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1640240486, now seen corresponding path program 1 times [2022-07-12 00:03:23,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 00:03:23,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833943072] [2022-07-12 00:03:23,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 00:03:23,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 00:03:24,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 00:03:24,055 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 00:03:24,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 00:03:24,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833943072] [2022-07-12 00:03:24,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833943072] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 00:03:24,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 00:03:24,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 00:03:24,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985461156] [2022-07-12 00:03:24,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 00:03:24,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 00:03:24,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 00:03:24,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 00:03:24,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 00:03:24,058 INFO L87 Difference]: Start difference. First operand 877 states and 1398 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 2 states have internal predecessors, (150), 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 00:03:24,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 00:03:24,628 INFO L93 Difference]: Finished difference Result 2565 states and 4101 transitions. [2022-07-12 00:03:24,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 00:03:24,628 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 2 states have internal predecessors, (150), 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 150 [2022-07-12 00:03:24,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 00:03:24,633 INFO L225 Difference]: With dead ends: 2565 [2022-07-12 00:03:24,634 INFO L226 Difference]: Without dead ends: 1690 [2022-07-12 00:03:24,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 00:03:24,636 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 216 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 568 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 00:03:24,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 192 Invalid, 694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 568 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 00:03:24,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1690 states. [2022-07-12 00:03:24,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1690 to 1690. [2022-07-12 00:03:24,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1690 states, 1689 states have (on average 1.3860272350503255) internal successors, (2341), 1689 states have internal predecessors, (2341), 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 00:03:24,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1690 states to 1690 states and 2341 transitions. [2022-07-12 00:03:24,663 INFO L78 Accepts]: Start accepts. Automaton has 1690 states and 2341 transitions. Word has length 150 [2022-07-12 00:03:24,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 00:03:24,663 INFO L495 AbstractCegarLoop]: Abstraction has 1690 states and 2341 transitions. [2022-07-12 00:03:24,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 2 states have internal predecessors, (150), 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 00:03:24,664 INFO L276 IsEmpty]: Start isEmpty. Operand 1690 states and 2341 transitions. [2022-07-12 00:03:24,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-12 00:03:24,669 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 00:03:24,670 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:03:24,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 00:03:24,670 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 00:03:24,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 00:03:24,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1267325975, now seen corresponding path program 1 times [2022-07-12 00:03:24,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 00:03:24,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648803950] [2022-07-12 00:03:24,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 00:03:24,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 00:03:24,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 00:03:24,716 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 00:03:24,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 00:03:24,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648803950] [2022-07-12 00:03:24,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648803950] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 00:03:24,717 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 00:03:24,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 00:03:24,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054034425] [2022-07-12 00:03:24,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 00:03:24,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 00:03:24,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 00:03:24,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 00:03:24,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 00:03:24,719 INFO L87 Difference]: Start difference. First operand 1690 states and 2341 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 2 states have internal predecessors, (156), 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 00:03:25,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 00:03:25,391 INFO L93 Difference]: Finished difference Result 5048 states and 6998 transitions. [2022-07-12 00:03:25,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 00:03:25,391 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 2 states have internal predecessors, (156), 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 156 [2022-07-12 00:03:25,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 00:03:25,401 INFO L225 Difference]: With dead ends: 5048 [2022-07-12 00:03:25,401 INFO L226 Difference]: Without dead ends: 3360 [2022-07-12 00:03:25,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 00:03:25,405 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 275 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 727 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 00:03:25,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 206 Invalid, 750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 727 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-12 00:03:25,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3360 states. [2022-07-12 00:03:25,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3360 to 3351. [2022-07-12 00:03:25,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3351 states, 3350 states have (on average 1.3722388059701494) internal successors, (4597), 3350 states have internal predecessors, (4597), 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 00:03:25,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3351 states to 3351 states and 4597 transitions. [2022-07-12 00:03:25,453 INFO L78 Accepts]: Start accepts. Automaton has 3351 states and 4597 transitions. Word has length 156 [2022-07-12 00:03:25,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 00:03:25,454 INFO L495 AbstractCegarLoop]: Abstraction has 3351 states and 4597 transitions. [2022-07-12 00:03:25,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 2 states have internal predecessors, (156), 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 00:03:25,454 INFO L276 IsEmpty]: Start isEmpty. Operand 3351 states and 4597 transitions. [2022-07-12 00:03:25,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-07-12 00:03:25,458 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 00:03:25,458 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:03:25,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 00:03:25,459 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 00:03:25,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 00:03:25,459 INFO L85 PathProgramCache]: Analyzing trace with hash -267079187, now seen corresponding path program 1 times [2022-07-12 00:03:25,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 00:03:25,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436297887] [2022-07-12 00:03:25,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 00:03:25,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 00:03:25,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 00:03:25,501 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-12 00:03:25,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 00:03:25,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436297887] [2022-07-12 00:03:25,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436297887] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 00:03:25,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 00:03:25,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 00:03:25,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499405912] [2022-07-12 00:03:25,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 00:03:25,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 00:03:25,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 00:03:25,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 00:03:25,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 00:03:25,504 INFO L87 Difference]: Start difference. First operand 3351 states and 4597 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 2 states have internal predecessors, (155), 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 00:03:26,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 00:03:26,102 INFO L93 Difference]: Finished difference Result 9992 states and 13723 transitions. [2022-07-12 00:03:26,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 00:03:26,102 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 2 states have internal predecessors, (155), 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 158 [2022-07-12 00:03:26,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 00:03:26,120 INFO L225 Difference]: With dead ends: 9992 [2022-07-12 00:03:26,121 INFO L226 Difference]: Without dead ends: 6643 [2022-07-12 00:03:26,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 00:03:26,130 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 247 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 00:03:26,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 92 Invalid, 779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 00:03:26,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6643 states. [2022-07-12 00:03:26,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6643 to 6605. [2022-07-12 00:03:26,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6605 states, 6604 states have (on average 1.3452453058752272) internal successors, (8884), 6604 states have internal predecessors, (8884), 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 00:03:26,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6605 states to 6605 states and 8884 transitions. [2022-07-12 00:03:26,229 INFO L78 Accepts]: Start accepts. Automaton has 6605 states and 8884 transitions. Word has length 158 [2022-07-12 00:03:26,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 00:03:26,230 INFO L495 AbstractCegarLoop]: Abstraction has 6605 states and 8884 transitions. [2022-07-12 00:03:26,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 2 states have internal predecessors, (155), 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 00:03:26,232 INFO L276 IsEmpty]: Start isEmpty. Operand 6605 states and 8884 transitions. [2022-07-12 00:03:26,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-07-12 00:03:26,240 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 00:03:26,240 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:03:26,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 00:03:26,242 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 00:03:26,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 00:03:26,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1504485225, now seen corresponding path program 1 times [2022-07-12 00:03:26,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 00:03:26,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349035688] [2022-07-12 00:03:26,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 00:03:26,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 00:03:26,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 00:03:26,330 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-12 00:03:26,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 00:03:26,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349035688] [2022-07-12 00:03:26,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349035688] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 00:03:26,331 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 00:03:26,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 00:03:26,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619679932] [2022-07-12 00:03:26,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 00:03:26,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 00:03:26,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 00:03:26,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 00:03:26,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 00:03:26,333 INFO L87 Difference]: Start difference. First operand 6605 states and 8884 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 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 00:03:26,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 00:03:26,976 INFO L93 Difference]: Finished difference Result 17695 states and 24239 transitions. [2022-07-12 00:03:26,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 00:03:26,976 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 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 172 [2022-07-12 00:03:26,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 00:03:27,012 INFO L225 Difference]: With dead ends: 17695 [2022-07-12 00:03:27,012 INFO L226 Difference]: Without dead ends: 11092 [2022-07-12 00:03:27,020 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 00:03:27,021 INFO L413 NwaCegarLoop]: 341 mSDtfsCounter, 216 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 00:03:27,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 364 Invalid, 746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 580 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-12 00:03:27,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11092 states. [2022-07-12 00:03:27,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11092 to 11082. [2022-07-12 00:03:27,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11082 states, 11081 states have (on average 1.2974460788737479) internal successors, (14377), 11081 states have internal predecessors, (14377), 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 00:03:27,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11082 states to 11082 states and 14377 transitions. [2022-07-12 00:03:27,198 INFO L78 Accepts]: Start accepts. Automaton has 11082 states and 14377 transitions. Word has length 172 [2022-07-12 00:03:27,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 00:03:27,198 INFO L495 AbstractCegarLoop]: Abstraction has 11082 states and 14377 transitions. [2022-07-12 00:03:27,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 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 00:03:27,199 INFO L276 IsEmpty]: Start isEmpty. Operand 11082 states and 14377 transitions. [2022-07-12 00:03:27,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-07-12 00:03:27,212 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 00:03:27,212 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:03:27,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 00:03:27,213 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 00:03:27,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 00:03:27,214 INFO L85 PathProgramCache]: Analyzing trace with hash 2111621614, now seen corresponding path program 1 times [2022-07-12 00:03:27,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 00:03:27,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3926612] [2022-07-12 00:03:27,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 00:03:27,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 00:03:27,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 00:03:27,314 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 36 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 00:03:27,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 00:03:27,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3926612] [2022-07-12 00:03:27,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3926612] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 00:03:27,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1357285676] [2022-07-12 00:03:27,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 00:03:27,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 00:03:27,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 00:03:27,327 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 00:03:27,372 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 00:03:27,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 00:03:27,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 00:03:27,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 00:03:27,610 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-12 00:03:27,610 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 00:03:27,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1357285676] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 00:03:27,610 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 00:03:27,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2022-07-12 00:03:27,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269406002] [2022-07-12 00:03:27,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 00:03:27,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 00:03:27,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 00:03:27,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 00:03:27,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 00:03:27,612 INFO L87 Difference]: Start difference. First operand 11082 states and 14377 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 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 00:03:28,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 00:03:28,666 INFO L93 Difference]: Finished difference Result 31946 states and 41599 transitions. [2022-07-12 00:03:28,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 00:03:28,673 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 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 181 [2022-07-12 00:03:28,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 00:03:28,741 INFO L225 Difference]: With dead ends: 31946 [2022-07-12 00:03:28,742 INFO L226 Difference]: Without dead ends: 20866 [2022-07-12 00:03:28,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 00:03:28,817 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 230 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 656 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 656 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-12 00:03:28,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 206 Invalid, 729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 656 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-12 00:03:28,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20866 states. [2022-07-12 00:03:29,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20866 to 20862. [2022-07-12 00:03:29,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20862 states, 20861 states have (on average 1.268012079957816) internal successors, (26452), 20861 states have internal predecessors, (26452), 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 00:03:29,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20862 states to 20862 states and 26452 transitions. [2022-07-12 00:03:29,139 INFO L78 Accepts]: Start accepts. Automaton has 20862 states and 26452 transitions. Word has length 181 [2022-07-12 00:03:29,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 00:03:29,141 INFO L495 AbstractCegarLoop]: Abstraction has 20862 states and 26452 transitions. [2022-07-12 00:03:29,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 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 00:03:29,142 INFO L276 IsEmpty]: Start isEmpty. Operand 20862 states and 26452 transitions. [2022-07-12 00:03:29,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-07-12 00:03:29,158 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 00:03:29,158 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:03:29,204 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-12 00:03:29,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 00:03:29,377 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 00:03:29,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 00:03:29,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1871477101, now seen corresponding path program 1 times [2022-07-12 00:03:29,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 00:03:29,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222045651] [2022-07-12 00:03:29,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 00:03:29,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 00:03:29,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 00:03:29,518 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-12 00:03:29,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 00:03:29,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222045651] [2022-07-12 00:03:29,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222045651] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 00:03:29,519 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 00:03:29,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 00:03:29,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772583752] [2022-07-12 00:03:29,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 00:03:29,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 00:03:29,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 00:03:29,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 00:03:29,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 00:03:29,521 INFO L87 Difference]: Start difference. First operand 20862 states and 26452 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 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 00:03:31,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 00:03:31,413 INFO L93 Difference]: Finished difference Result 48864 states and 62100 transitions. [2022-07-12 00:03:31,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 00:03:31,413 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 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 185 [2022-07-12 00:03:31,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 00:03:31,491 INFO L225 Difference]: With dead ends: 48864 [2022-07-12 00:03:31,495 INFO L226 Difference]: Without dead ends: 28004 [2022-07-12 00:03:31,537 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 00:03:31,540 INFO L413 NwaCegarLoop]: 340 mSDtfsCounter, 214 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-12 00:03:31,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 361 Invalid, 728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 557 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-12 00:03:31,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28004 states. [2022-07-12 00:03:32,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28004 to 27969. [2022-07-12 00:03:32,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27969 states, 27968 states have (on average 1.2254362128146452) internal successors, (34273), 27968 states have internal predecessors, (34273), 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 00:03:32,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27969 states to 27969 states and 34273 transitions. [2022-07-12 00:03:32,564 INFO L78 Accepts]: Start accepts. Automaton has 27969 states and 34273 transitions. Word has length 185 [2022-07-12 00:03:32,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 00:03:32,565 INFO L495 AbstractCegarLoop]: Abstraction has 27969 states and 34273 transitions. [2022-07-12 00:03:32,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 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 00:03:32,566 INFO L276 IsEmpty]: Start isEmpty. Operand 27969 states and 34273 transitions. [2022-07-12 00:03:32,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2022-07-12 00:03:32,604 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 00:03:32,604 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 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 00:03:32,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 00:03:32,605 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 00:03:32,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 00:03:32,605 INFO L85 PathProgramCache]: Analyzing trace with hash 564235399, now seen corresponding path program 1 times [2022-07-12 00:03:32,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 00:03:32,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265324605] [2022-07-12 00:03:32,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 00:03:32,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 00:03:32,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 00:03:32,915 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-12 00:03:32,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 00:03:32,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265324605] [2022-07-12 00:03:32,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265324605] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 00:03:32,916 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 00:03:32,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 00:03:32,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747678892] [2022-07-12 00:03:32,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 00:03:32,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 00:03:32,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 00:03:32,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 00:03:32,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-12 00:03:32,918 INFO L87 Difference]: Start difference. First operand 27969 states and 34273 transitions. Second operand has 4 states, 4 states have (on average 48.75) internal successors, (195), 3 states have internal predecessors, (195), 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 00:03:34,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 00:03:34,251 INFO L93 Difference]: Finished difference Result 50148 states and 61194 transitions. [2022-07-12 00:03:34,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 00:03:34,252 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 48.75) internal successors, (195), 3 states have internal predecessors, (195), 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 200 [2022-07-12 00:03:34,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 00:03:34,321 INFO L225 Difference]: With dead ends: 50148 [2022-07-12 00:03:34,335 INFO L226 Difference]: Without dead ends: 22384 [2022-07-12 00:03:34,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-12 00:03:34,373 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 460 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 786 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-12 00:03:34,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [460 Valid, 54 Invalid, 937 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 786 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-12 00:03:34,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22384 states. [2022-07-12 00:03:34,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22384 to 22384. [2022-07-12 00:03:34,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22384 states, 22383 states have (on average 1.1557878747263548) internal successors, (25870), 22383 states have internal predecessors, (25870), 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 00:03:34,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22384 states to 22384 states and 25870 transitions. [2022-07-12 00:03:34,943 INFO L78 Accepts]: Start accepts. Automaton has 22384 states and 25870 transitions. Word has length 200 [2022-07-12 00:03:34,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 00:03:34,944 INFO L495 AbstractCegarLoop]: Abstraction has 22384 states and 25870 transitions. [2022-07-12 00:03:34,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.75) internal successors, (195), 3 states have internal predecessors, (195), 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 00:03:34,944 INFO L276 IsEmpty]: Start isEmpty. Operand 22384 states and 25870 transitions. [2022-07-12 00:03:34,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2022-07-12 00:03:34,979 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 00:03:34,979 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 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 00:03:34,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 00:03:34,979 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 00:03:34,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 00:03:34,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1419350507, now seen corresponding path program 1 times [2022-07-12 00:03:34,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 00:03:34,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752052032] [2022-07-12 00:03:34,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 00:03:34,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 00:03:35,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 00:03:35,103 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-07-12 00:03:35,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 00:03:35,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752052032] [2022-07-12 00:03:35,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752052032] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 00:03:35,104 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 00:03:35,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 00:03:35,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248358339] [2022-07-12 00:03:35,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 00:03:35,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 00:03:35,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 00:03:35,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 00:03:35,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 00:03:35,105 INFO L87 Difference]: Start difference. First operand 22384 states and 25870 transitions. Second operand has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 2 states have internal predecessors, (173), 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 00:03:36,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 00:03:36,345 INFO L93 Difference]: Finished difference Result 55756 states and 64725 transitions. [2022-07-12 00:03:36,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 00:03:36,346 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 2 states have internal predecessors, (173), 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 213 [2022-07-12 00:03:36,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 00:03:36,453 INFO L225 Difference]: With dead ends: 55756 [2022-07-12 00:03:36,454 INFO L226 Difference]: Without dead ends: 33577 [2022-07-12 00:03:36,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 00:03:36,489 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 208 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 616 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-12 00:03:36,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 100 Invalid, 706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 616 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-12 00:03:36,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33577 states. [2022-07-12 00:03:37,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33577 to 32956. [2022-07-12 00:03:37,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32956 states, 32955 states have (on average 1.1514489455317858) internal successors, (37946), 32955 states have internal predecessors, (37946), 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 00:03:37,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32956 states to 32956 states and 37946 transitions. [2022-07-12 00:03:37,427 INFO L78 Accepts]: Start accepts. Automaton has 32956 states and 37946 transitions. Word has length 213 [2022-07-12 00:03:37,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 00:03:37,428 INFO L495 AbstractCegarLoop]: Abstraction has 32956 states and 37946 transitions. [2022-07-12 00:03:37,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 2 states have internal predecessors, (173), 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 00:03:37,428 INFO L276 IsEmpty]: Start isEmpty. Operand 32956 states and 37946 transitions. [2022-07-12 00:03:37,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-07-12 00:03:37,483 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 00:03:37,484 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:03:37,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 00:03:37,485 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 00:03:37,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 00:03:37,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1457404762, now seen corresponding path program 1 times [2022-07-12 00:03:37,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 00:03:37,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463370835] [2022-07-12 00:03:37,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 00:03:37,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 00:03:37,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 00:03:37,835 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-07-12 00:03:37,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 00:03:37,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463370835] [2022-07-12 00:03:37,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463370835] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 00:03:37,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 00:03:37,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 00:03:37,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673222375] [2022-07-12 00:03:37,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 00:03:37,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 00:03:37,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 00:03:37,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 00:03:37,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-12 00:03:37,838 INFO L87 Difference]: Start difference. First operand 32956 states and 37946 transitions. Second operand has 4 states, 4 states have (on average 46.25) internal successors, (185), 3 states have internal predecessors, (185), 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 00:03:39,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 00:03:39,491 INFO L93 Difference]: Finished difference Result 95627 states and 110910 transitions. [2022-07-12 00:03:39,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 00:03:39,492 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 46.25) internal successors, (185), 3 states have internal predecessors, (185), 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 230 [2022-07-12 00:03:39,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 00:03:39,699 INFO L225 Difference]: With dead ends: 95627 [2022-07-12 00:03:39,699 INFO L226 Difference]: Without dead ends: 63079 [2022-07-12 00:03:39,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-12 00:03:39,747 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 471 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 773 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 471 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-12 00:03:39,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [471 Valid, 472 Invalid, 956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 773 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-12 00:03:39,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63079 states. [2022-07-12 00:03:40,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63079 to 50459. [2022-07-12 00:03:40,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50459 states, 50458 states have (on average 1.1502041301676642) internal successors, (58037), 50458 states have internal predecessors, (58037), 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 00:03:41,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50459 states to 50459 states and 58037 transitions. [2022-07-12 00:03:41,086 INFO L78 Accepts]: Start accepts. Automaton has 50459 states and 58037 transitions. Word has length 230 [2022-07-12 00:03:41,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 00:03:41,088 INFO L495 AbstractCegarLoop]: Abstraction has 50459 states and 58037 transitions. [2022-07-12 00:03:41,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.25) internal successors, (185), 3 states have internal predecessors, (185), 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 00:03:41,090 INFO L276 IsEmpty]: Start isEmpty. Operand 50459 states and 58037 transitions. [2022-07-12 00:03:41,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2022-07-12 00:03:41,129 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 00:03:41,129 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-12 00:03:41,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 00:03:41,129 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 00:03:41,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 00:03:41,130 INFO L85 PathProgramCache]: Analyzing trace with hash -2026881340, now seen corresponding path program 1 times [2022-07-12 00:03:41,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 00:03:41,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888609542] [2022-07-12 00:03:41,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 00:03:41,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 00:03:41,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 00:03:41,305 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2022-07-12 00:03:41,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 00:03:41,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888609542] [2022-07-12 00:03:41,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888609542] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 00:03:41,305 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 00:03:41,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 00:03:41,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435691723] [2022-07-12 00:03:41,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 00:03:41,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 00:03:41,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 00:03:41,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 00:03:41,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 00:03:41,307 INFO L87 Difference]: Start difference. First operand 50459 states and 58037 transitions. Second operand has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 2 states have internal predecessors, (199), 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 00:03:42,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 00:03:42,855 INFO L93 Difference]: Finished difference Result 134481 states and 155084 transitions. [2022-07-12 00:03:42,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 00:03:42,859 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 2 states have internal predecessors, (199), 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 295 [2022-07-12 00:03:42,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 00:03:42,971 INFO L225 Difference]: With dead ends: 134481 [2022-07-12 00:03:42,972 INFO L226 Difference]: Without dead ends: 84227 [2022-07-12 00:03:43,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 00:03:43,046 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 215 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 663 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-12 00:03:43,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 122 Invalid, 680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 663 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-12 00:03:43,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84227 states. [2022-07-12 00:03:44,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84227 to 84220. [2022-07-12 00:03:44,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84220 states, 84219 states have (on average 1.1496811883304243) internal successors, (96825), 84219 states have internal predecessors, (96825), 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 00:03:44,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84220 states to 84220 states and 96825 transitions. [2022-07-12 00:03:44,640 INFO L78 Accepts]: Start accepts. Automaton has 84220 states and 96825 transitions. Word has length 295 [2022-07-12 00:03:44,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 00:03:44,641 INFO L495 AbstractCegarLoop]: Abstraction has 84220 states and 96825 transitions. [2022-07-12 00:03:44,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 2 states have internal predecessors, (199), 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 00:03:44,642 INFO L276 IsEmpty]: Start isEmpty. Operand 84220 states and 96825 transitions. [2022-07-12 00:03:45,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2022-07-12 00:03:45,037 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 00:03:45,037 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-12 00:03:45,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-12 00:03:45,037 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 00:03:45,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 00:03:45,037 INFO L85 PathProgramCache]: Analyzing trace with hash -679322528, now seen corresponding path program 1 times [2022-07-12 00:03:45,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 00:03:45,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373775013] [2022-07-12 00:03:45,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 00:03:45,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 00:03:45,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 00:03:45,339 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2022-07-12 00:03:45,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 00:03:45,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373775013] [2022-07-12 00:03:45,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373775013] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 00:03:45,340 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 00:03:45,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 00:03:45,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70177653] [2022-07-12 00:03:45,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 00:03:45,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 00:03:45,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 00:03:45,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 00:03:45,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 00:03:45,342 INFO L87 Difference]: Start difference. First operand 84220 states and 96825 transitions. Second operand has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 2 states have internal predecessors, (223), 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 00:03:48,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 00:03:48,725 INFO L93 Difference]: Finished difference Result 189401 states and 218167 transitions. [2022-07-12 00:03:48,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 00:03:48,726 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 2 states have internal predecessors, (223), 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 319 [2022-07-12 00:03:48,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 00:03:48,885 INFO L225 Difference]: With dead ends: 189401 [2022-07-12 00:03:48,885 INFO L226 Difference]: Without dead ends: 105386 [2022-07-12 00:03:48,932 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 00:03:48,933 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 157 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 660 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-12 00:03:48,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 141 Invalid, 667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 660 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-12 00:03:49,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105386 states. [2022-07-12 00:03:50,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105386 to 105384. [2022-07-12 00:03:50,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105384 states, 105383 states have (on average 1.1522826262300372) internal successors, (121431), 105383 states have internal predecessors, (121431), 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 00:03:50,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105384 states to 105384 states and 121431 transitions. [2022-07-12 00:03:50,754 INFO L78 Accepts]: Start accepts. Automaton has 105384 states and 121431 transitions. Word has length 319 [2022-07-12 00:03:50,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 00:03:50,754 INFO L495 AbstractCegarLoop]: Abstraction has 105384 states and 121431 transitions. [2022-07-12 00:03:50,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 2 states have internal predecessors, (223), 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 00:03:50,755 INFO L276 IsEmpty]: Start isEmpty. Operand 105384 states and 121431 transitions. [2022-07-12 00:03:50,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2022-07-12 00:03:50,796 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 00:03:50,796 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-12 00:03:50,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-12 00:03:50,797 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 00:03:50,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 00:03:50,797 INFO L85 PathProgramCache]: Analyzing trace with hash 901370999, now seen corresponding path program 1 times [2022-07-12 00:03:50,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 00:03:50,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868182656] [2022-07-12 00:03:50,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 00:03:50,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 00:03:50,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 00:03:50,884 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 180 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2022-07-12 00:03:50,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 00:03:50,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868182656] [2022-07-12 00:03:50,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868182656] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 00:03:50,884 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 00:03:50,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 00:03:50,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045226861] [2022-07-12 00:03:50,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 00:03:50,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 00:03:50,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 00:03:50,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 00:03:50,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 00:03:50,886 INFO L87 Difference]: Start difference. First operand 105384 states and 121431 transitions. Second operand has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 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 00:03:51,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 00:03:51,933 INFO L93 Difference]: Finished difference Result 196707 states and 226115 transitions. [2022-07-12 00:03:51,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 00:03:51,933 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 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 323 [2022-07-12 00:03:51,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 00:03:52,363 INFO L225 Difference]: With dead ends: 196707 [2022-07-12 00:03:52,369 INFO L226 Difference]: Without dead ends: 112692 [2022-07-12 00:03:52,439 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 00:03:52,439 INFO L413 NwaCegarLoop]: 341 mSDtfsCounter, 163 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 00:03:52,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 357 Invalid, 599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 516 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 00:03:52,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112692 states. [2022-07-12 00:03:53,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112692 to 111880. [2022-07-12 00:03:53,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111880 states, 111879 states have (on average 1.1415010859946908) internal successors, (127710), 111879 states have internal predecessors, (127710), 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 00:03:54,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111880 states to 111880 states and 127710 transitions. [2022-07-12 00:03:54,055 INFO L78 Accepts]: Start accepts. Automaton has 111880 states and 127710 transitions. Word has length 323 [2022-07-12 00:03:54,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 00:03:54,056 INFO L495 AbstractCegarLoop]: Abstraction has 111880 states and 127710 transitions. [2022-07-12 00:03:54,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 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 00:03:54,056 INFO L276 IsEmpty]: Start isEmpty. Operand 111880 states and 127710 transitions. [2022-07-12 00:03:54,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2022-07-12 00:03:54,133 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 00:03:54,134 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-12 00:03:54,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-12 00:03:54,134 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 00:03:54,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 00:03:54,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1063126104, now seen corresponding path program 1 times [2022-07-12 00:03:54,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 00:03:54,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047954302] [2022-07-12 00:03:54,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 00:03:54,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 00:03:54,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 00:03:54,924 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2022-07-12 00:03:54,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 00:03:54,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047954302] [2022-07-12 00:03:54,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047954302] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 00:03:54,924 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 00:03:54,924 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 00:03:54,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448965423] [2022-07-12 00:03:54,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 00:03:54,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 00:03:54,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 00:03:54,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 00:03:54,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 00:03:54,925 INFO L87 Difference]: Start difference. First operand 111880 states and 127710 transitions. Second operand has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 2 states have internal predecessors, (185), 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 00:03:55,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 00:03:55,976 INFO L93 Difference]: Finished difference Result 228832 states and 260859 transitions. [2022-07-12 00:03:55,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 00:03:55,977 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 2 states have internal predecessors, (185), 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 330 [2022-07-12 00:03:55,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 00:03:56,169 INFO L225 Difference]: With dead ends: 228832 [2022-07-12 00:03:56,183 INFO L226 Difference]: Without dead ends: 138321 [2022-07-12 00:03:56,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 00:03:56,298 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 218 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 675 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 00:03:56,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 134 Invalid, 683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 675 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 00:03:56,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138321 states. [2022-07-12 00:03:58,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138321 to 138316. [2022-07-12 00:03:58,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138316 states, 138315 states have (on average 1.1416043090048078) internal successors, (157901), 138315 states have internal predecessors, (157901), 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 00:03:58,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138316 states to 138316 states and 157901 transitions. [2022-07-12 00:03:58,513 INFO L78 Accepts]: Start accepts. Automaton has 138316 states and 157901 transitions. Word has length 330 [2022-07-12 00:03:58,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 00:03:58,514 INFO L495 AbstractCegarLoop]: Abstraction has 138316 states and 157901 transitions. [2022-07-12 00:03:58,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 2 states have internal predecessors, (185), 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 00:03:58,514 INFO L276 IsEmpty]: Start isEmpty. Operand 138316 states and 157901 transitions. [2022-07-12 00:03:58,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2022-07-12 00:03:58,891 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 00:03:58,892 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-12 00:03:58,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-12 00:03:58,892 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 00:03:58,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 00:03:58,893 INFO L85 PathProgramCache]: Analyzing trace with hash 178796709, now seen corresponding path program 1 times [2022-07-12 00:03:58,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 00:03:58,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744721009] [2022-07-12 00:03:58,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 00:03:58,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 00:03:58,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 00:03:59,062 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 216 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-07-12 00:03:59,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 00:03:59,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744721009] [2022-07-12 00:03:59,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744721009] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 00:03:59,062 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 00:03:59,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 00:03:59,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574371783] [2022-07-12 00:03:59,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 00:03:59,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 00:03:59,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 00:03:59,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 00:03:59,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-12 00:03:59,064 INFO L87 Difference]: Start difference. First operand 138316 states and 157901 transitions. Second operand has 4 states, 4 states have (on average 58.5) internal successors, (234), 3 states have internal predecessors, (234), 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 00:04:00,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 00:04:00,547 INFO L93 Difference]: Finished difference Result 228942 states and 261013 transitions. [2022-07-12 00:04:00,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 00:04:00,548 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 58.5) internal successors, (234), 3 states have internal predecessors, (234), 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 338 [2022-07-12 00:04:00,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 00:04:00,737 INFO L225 Difference]: With dead ends: 228942 [2022-07-12 00:04:00,737 INFO L226 Difference]: Without dead ends: 138431 [2022-07-12 00:04:00,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-12 00:04:00,813 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 381 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 992 mSolverCounterSat, 345 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 1337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 345 IncrementalHoareTripleChecker+Valid, 992 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-12 00:04:00,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [381 Valid, 78 Invalid, 1337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [345 Valid, 992 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-12 00:04:00,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138431 states. [2022-07-12 00:04:02,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138431 to 136895. [2022-07-12 00:04:02,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136895 states, 136894 states have (on average 1.1424678948675617) internal successors, (156397), 136894 states have internal predecessors, (156397), 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 00:04:03,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136895 states to 136895 states and 156397 transitions. [2022-07-12 00:04:03,174 INFO L78 Accepts]: Start accepts. Automaton has 136895 states and 156397 transitions. Word has length 338 [2022-07-12 00:04:03,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 00:04:03,175 INFO L495 AbstractCegarLoop]: Abstraction has 136895 states and 156397 transitions. [2022-07-12 00:04:03,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.5) internal successors, (234), 3 states have internal predecessors, (234), 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 00:04:03,175 INFO L276 IsEmpty]: Start isEmpty. Operand 136895 states and 156397 transitions. [2022-07-12 00:04:03,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2022-07-12 00:04:03,254 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 00:04:03,256 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-12 00:04:03,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-12 00:04:03,257 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 00:04:03,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 00:04:03,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1666657648, now seen corresponding path program 1 times [2022-07-12 00:04:03,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 00:04:03,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809871117] [2022-07-12 00:04:03,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 00:04:03,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 00:04:03,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 00:04:03,684 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 129 proven. 6 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2022-07-12 00:04:03,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 00:04:03,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809871117] [2022-07-12 00:04:03,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809871117] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 00:04:03,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509656326] [2022-07-12 00:04:03,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 00:04:03,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 00:04:03,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 00:04:03,686 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 00:04:03,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 00:04:03,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 00:04:03,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 729 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 00:04:03,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 00:04:04,068 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 222 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2022-07-12 00:04:04,078 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 00:04:04,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1509656326] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 00:04:04,078 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 00:04:04,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-07-12 00:04:04,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25635441] [2022-07-12 00:04:04,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 00:04:04,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 00:04:04,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 00:04:04,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 00:04:04,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 00:04:04,079 INFO L87 Difference]: Start difference. First operand 136895 states and 156397 transitions. Second operand has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 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 00:04:06,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 00:04:06,399 INFO L93 Difference]: Finished difference Result 297131 states and 339473 transitions. [2022-07-12 00:04:06,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 00:04:06,399 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 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 345 [2022-07-12 00:04:06,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 00:04:06,706 INFO L225 Difference]: With dead ends: 297131 [2022-07-12 00:04:06,706 INFO L226 Difference]: Without dead ends: 160441 [2022-07-12 00:04:06,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 344 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 00:04:06,812 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 238 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 598 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-12 00:04:06,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 128 Invalid, 667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 598 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-12 00:04:06,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160441 states. [2022-07-12 00:04:09,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160441 to 159827. [2022-07-12 00:04:09,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159827 states, 159826 states have (on average 1.1344336966451016) internal successors, (181312), 159826 states have internal predecessors, (181312), 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 00:04:09,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159827 states to 159827 states and 181312 transitions. [2022-07-12 00:04:09,831 INFO L78 Accepts]: Start accepts. Automaton has 159827 states and 181312 transitions. Word has length 345 [2022-07-12 00:04:09,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 00:04:09,832 INFO L495 AbstractCegarLoop]: Abstraction has 159827 states and 181312 transitions. [2022-07-12 00:04:09,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 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 00:04:09,832 INFO L276 IsEmpty]: Start isEmpty. Operand 159827 states and 181312 transitions. [2022-07-12 00:04:09,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2022-07-12 00:04:09,923 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 00:04:09,923 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-12 00:04:09,947 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-12 00:04:10,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-07-12 00:04:10,145 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 00:04:10,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 00:04:10,146 INFO L85 PathProgramCache]: Analyzing trace with hash -290618115, now seen corresponding path program 1 times [2022-07-12 00:04:10,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 00:04:10,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350452868] [2022-07-12 00:04:10,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 00:04:10,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 00:04:10,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 00:04:11,242 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 210 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2022-07-12 00:04:11,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 00:04:11,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350452868] [2022-07-12 00:04:11,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350452868] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 00:04:11,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 00:04:11,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 00:04:11,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391915230] [2022-07-12 00:04:11,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 00:04:11,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 00:04:11,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 00:04:11,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 00:04:11,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-12 00:04:11,244 INFO L87 Difference]: Start difference. First operand 159827 states and 181312 transitions. Second operand has 4 states, 4 states have (on average 62.0) internal successors, (248), 3 states have internal predecessors, (248), 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 00:04:14,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 00:04:14,134 INFO L93 Difference]: Finished difference Result 348829 states and 396351 transitions. [2022-07-12 00:04:14,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 00:04:14,143 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 62.0) internal successors, (248), 3 states have internal predecessors, (248), 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 349 [2022-07-12 00:04:14,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 00:04:15,125 INFO L225 Difference]: With dead ends: 348829 [2022-07-12 00:04:15,126 INFO L226 Difference]: Without dead ends: 189207 [2022-07-12 00:04:15,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-12 00:04:15,211 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 370 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 1026 mSolverCounterSat, 301 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 1327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 301 IncrementalHoareTripleChecker+Valid, 1026 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-12 00:04:15,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [370 Valid, 92 Invalid, 1327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [301 Valid, 1026 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-12 00:04:15,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189207 states. [2022-07-12 00:04:17,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189207 to 176320. [2022-07-12 00:04:17,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176320 states, 176319 states have (on average 1.134455163652244) internal successors, (200026), 176319 states have internal predecessors, (200026), 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 00:04:17,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176320 states to 176320 states and 200026 transitions. [2022-07-12 00:04:17,877 INFO L78 Accepts]: Start accepts. Automaton has 176320 states and 200026 transitions. Word has length 349 [2022-07-12 00:04:17,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 00:04:17,878 INFO L495 AbstractCegarLoop]: Abstraction has 176320 states and 200026 transitions. [2022-07-12 00:04:17,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.0) internal successors, (248), 3 states have internal predecessors, (248), 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 00:04:17,878 INFO L276 IsEmpty]: Start isEmpty. Operand 176320 states and 200026 transitions. [2022-07-12 00:04:17,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2022-07-12 00:04:17,951 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 00:04:17,952 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-12 00:04:17,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-12 00:04:17,952 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 00:04:17,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 00:04:17,952 INFO L85 PathProgramCache]: Analyzing trace with hash 930329166, now seen corresponding path program 1 times [2022-07-12 00:04:17,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 00:04:17,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043268938] [2022-07-12 00:04:17,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 00:04:17,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 00:04:17,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 00:04:18,048 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 150 proven. 0 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2022-07-12 00:04:18,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 00:04:18,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043268938] [2022-07-12 00:04:18,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043268938] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 00:04:18,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 00:04:18,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 00:04:18,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969790764] [2022-07-12 00:04:18,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 00:04:18,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 00:04:18,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 00:04:18,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 00:04:18,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 00:04:18,050 INFO L87 Difference]: Start difference. First operand 176320 states and 200026 transitions. Second operand has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 2 states have internal predecessors, (197), 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 00:04:19,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 00:04:19,937 INFO L93 Difference]: Finished difference Result 415911 states and 472217 transitions. [2022-07-12 00:04:19,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 00:04:19,937 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 2 states have internal predecessors, (197), 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 369 [2022-07-12 00:04:19,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 00:04:20,306 INFO L225 Difference]: With dead ends: 415911 [2022-07-12 00:04:20,307 INFO L226 Difference]: Without dead ends: 239796 [2022-07-12 00:04:20,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 00:04:20,391 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 208 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 684 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 00:04:20,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 151 Invalid, 702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 684 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 00:04:20,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239796 states.