./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem17_label46.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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/Problem17_label46.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 41cafc53a40b6e7779bbda9324b8e7811f318944543219bcda44525ed08008a3 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 12:56:36,444 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 12:56:36,446 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 12:56:36,469 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 12:56:36,472 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 12:56:36,473 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 12:56:36,475 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 12:56:36,479 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 12:56:36,481 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 12:56:36,482 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 12:56:36,483 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 12:56:36,485 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 12:56:36,486 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 12:56:36,488 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 12:56:36,489 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 12:56:36,491 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 12:56:36,493 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 12:56:36,498 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 12:56:36,499 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 12:56:36,501 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 12:56:36,502 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 12:56:36,506 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 12:56:36,507 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 12:56:36,507 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 12:56:36,508 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 12:56:36,510 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 12:56:36,510 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 12:56:36,510 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 12:56:36,511 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 12:56:36,515 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 12:56:36,515 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 12:56:36,516 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 12:56:36,516 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 12:56:36,517 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 12:56:36,517 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 12:56:36,518 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 12:56:36,519 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 12:56:36,520 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 12:56:36,520 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 12:56:36,520 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 12:56:36,521 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 12:56:36,522 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 12:56:36,523 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 12:56:36,559 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 12:56:36,560 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 12:56:36,560 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 12:56:36,560 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 12:56:36,561 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 12:56:36,561 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 12:56:36,561 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 12:56:36,562 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 12:56:36,562 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 12:56:36,562 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 12:56:36,563 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 12:56:36,563 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 12:56:36,563 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 12:56:36,563 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 12:56:36,563 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 12:56:36,563 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 12:56:36,563 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 12:56:36,564 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 12:56:36,564 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 12:56:36,564 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 12:56:36,564 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 12:56:36,564 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 12:56:36,564 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 12:56:36,565 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 12:56:36,565 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 12:56:36,565 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 12:56:36,565 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 12:56:36,565 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 12:56:36,565 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 12:56:36,565 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 12:56:36,566 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 12:56:36,566 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 12:56:36,566 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 12:56:36,566 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 41cafc53a40b6e7779bbda9324b8e7811f318944543219bcda44525ed08008a3 [2022-07-22 12:56:36,762 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 12:56:36,792 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 12:56:36,794 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 12:56:36,795 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 12:56:36,795 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 12:56:36,796 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem17_label46.c [2022-07-22 12:56:36,841 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f0979f1d/bf77792867b540b185c89ec8c3b79a44/FLAG2798b97c7 [2022-07-22 12:56:37,378 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 12:56:37,379 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label46.c [2022-07-22 12:56:37,398 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f0979f1d/bf77792867b540b185c89ec8c3b79a44/FLAG2798b97c7 [2022-07-22 12:56:37,870 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f0979f1d/bf77792867b540b185c89ec8c3b79a44 [2022-07-22 12:56:37,872 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 12:56:37,873 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 12:56:37,874 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 12:56:37,874 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 12:56:37,876 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 12:56:37,877 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 12:56:37" (1/1) ... [2022-07-22 12:56:37,878 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21d0c7b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:56:37, skipping insertion in model container [2022-07-22 12:56:37,878 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 12:56:37" (1/1) ... [2022-07-22 12:56:37,884 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 12:56:37,952 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 12:56:38,121 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/Problem17_label46.c[1649,1662] [2022-07-22 12:56:38,578 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 12:56:38,584 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 12:56:38,601 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/Problem17_label46.c[1649,1662] [2022-07-22 12:56:38,805 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 12:56:38,821 INFO L208 MainTranslator]: Completed translation [2022-07-22 12:56:38,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:56:38 WrapperNode [2022-07-22 12:56:38,822 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 12:56:38,822 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 12:56:38,823 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 12:56:38,823 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 12:56:38,828 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:56:38" (1/1) ... [2022-07-22 12:56:38,874 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:56:38" (1/1) ... [2022-07-22 12:56:39,096 INFO L137 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2611 [2022-07-22 12:56:39,097 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 12:56:39,098 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 12:56:39,098 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 12:56:39,099 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 12:56:39,104 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:56:38" (1/1) ... [2022-07-22 12:56:39,105 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:56:38" (1/1) ... [2022-07-22 12:56:39,156 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:56:38" (1/1) ... [2022-07-22 12:56:39,157 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:56:38" (1/1) ... [2022-07-22 12:56:39,253 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:56:38" (1/1) ... [2022-07-22 12:56:39,272 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:56:38" (1/1) ... [2022-07-22 12:56:39,290 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:56:38" (1/1) ... [2022-07-22 12:56:39,375 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 12:56:39,376 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 12:56:39,376 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 12:56:39,376 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 12:56:39,377 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:56:38" (1/1) ... [2022-07-22 12:56:39,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 12:56:39,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 12:56:39,413 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) [2022-07-22 12:56:39,417 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 [2022-07-22 12:56:39,442 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 12:56:39,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 12:56:39,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 12:56:39,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 12:56:39,497 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 12:56:39,499 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 12:56:41,885 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 12:56:41,893 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 12:56:41,893 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-22 12:56:41,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 12:56:41 BoogieIcfgContainer [2022-07-22 12:56:41,895 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 12:56:41,896 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 12:56:41,896 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 12:56:41,899 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 12:56:41,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 12:56:37" (1/3) ... [2022-07-22 12:56:41,900 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@93a1839 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 12:56:41, skipping insertion in model container [2022-07-22 12:56:41,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:56:38" (2/3) ... [2022-07-22 12:56:41,900 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@93a1839 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 12:56:41, skipping insertion in model container [2022-07-22 12:56:41,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 12:56:41" (3/3) ... [2022-07-22 12:56:41,901 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem17_label46.c [2022-07-22 12:56:41,911 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 12:56:41,912 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 12:56:41,970 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 12:56:41,975 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@6c523b6a, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6ceb01f6 [2022-07-22 12:56:41,976 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 12:56:41,981 INFO L276 IsEmpty]: Start isEmpty. Operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 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) [2022-07-22 12:56:41,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-07-22 12:56:41,985 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:56:41,985 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:56:41,986 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:56:41,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:56:41,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1417350502, now seen corresponding path program 1 times [2022-07-22 12:56:41,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:56:41,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994004094] [2022-07-22 12:56:41,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:56:41,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:56:42,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:56:42,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 12:56:42,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:56:42,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994004094] [2022-07-22 12:56:42,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994004094] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:56:42,118 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:56:42,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 12:56:42,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642539741] [2022-07-22 12:56:42,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:56:42,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:56:42,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:56:42,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:56:42,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:56:42,152 INFO L87 Difference]: Start difference. First operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 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 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:56:44,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:56:44,537 INFO L93 Difference]: Finished difference Result 1642 states and 3024 transitions. [2022-07-22 12:56:44,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:56:44,540 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-07-22 12:56:44,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:56:44,553 INFO L225 Difference]: With dead ends: 1642 [2022-07-22 12:56:44,554 INFO L226 Difference]: Without dead ends: 975 [2022-07-22 12:56:44,572 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 [2022-07-22 12:56:44,574 INFO L413 NwaCegarLoop]: 474 mSDtfsCounter, 480 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 1413 mSolverCounterSat, 372 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 480 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 1785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 372 IncrementalHoareTripleChecker+Valid, 1413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-22 12:56:44,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [480 Valid, 550 Invalid, 1785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [372 Valid, 1413 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-22 12:56:44,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2022-07-22 12:56:44,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 972. [2022-07-22 12:56:44,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 972 states, 971 states have (on average 1.5077239958805355) internal successors, (1464), 971 states have internal predecessors, (1464), 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) [2022-07-22 12:56:44,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1464 transitions. [2022-07-22 12:56:44,656 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1464 transitions. Word has length 10 [2022-07-22 12:56:44,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:56:44,656 INFO L495 AbstractCegarLoop]: Abstraction has 972 states and 1464 transitions. [2022-07-22 12:56:44,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:56:44,657 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1464 transitions. [2022-07-22 12:56:44,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-07-22 12:56:44,658 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:56:44,659 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:56:44,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 12:56:44,659 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:56:44,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:56:44,660 INFO L85 PathProgramCache]: Analyzing trace with hash -225164890, now seen corresponding path program 1 times [2022-07-22 12:56:44,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:56:44,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400636332] [2022-07-22 12:56:44,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:56:44,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:56:44,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:56:44,824 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 12:56:44,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:56:44,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400636332] [2022-07-22 12:56:44,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400636332] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:56:44,826 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:56:44,826 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:56:44,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338419085] [2022-07-22 12:56:44,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:56:44,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:56:44,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:56:44,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:56:44,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:56:44,831 INFO L87 Difference]: Start difference. First operand 972 states and 1464 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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) [2022-07-22 12:56:46,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:56:46,719 INFO L93 Difference]: Finished difference Result 2814 states and 4242 transitions. [2022-07-22 12:56:46,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:56:46,720 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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 80 [2022-07-22 12:56:46,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:56:46,726 INFO L225 Difference]: With dead ends: 2814 [2022-07-22 12:56:46,726 INFO L226 Difference]: Without dead ends: 1844 [2022-07-22 12:56:46,728 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 [2022-07-22 12:56:46,729 INFO L413 NwaCegarLoop]: 853 mSDtfsCounter, 481 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 1283 mSolverCounterSat, 414 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 481 SdHoareTripleChecker+Valid, 921 SdHoareTripleChecker+Invalid, 1697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 414 IncrementalHoareTripleChecker+Valid, 1283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-22 12:56:46,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [481 Valid, 921 Invalid, 1697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [414 Valid, 1283 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-22 12:56:46,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1844 states. [2022-07-22 12:56:46,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1844 to 1842. [2022-07-22 12:56:46,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1842 states, 1841 states have (on average 1.3601303639326452) internal successors, (2504), 1841 states have internal predecessors, (2504), 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) [2022-07-22 12:56:46,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1842 states to 1842 states and 2504 transitions. [2022-07-22 12:56:46,757 INFO L78 Accepts]: Start accepts. Automaton has 1842 states and 2504 transitions. Word has length 80 [2022-07-22 12:56:46,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:56:46,757 INFO L495 AbstractCegarLoop]: Abstraction has 1842 states and 2504 transitions. [2022-07-22 12:56:46,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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) [2022-07-22 12:56:46,758 INFO L276 IsEmpty]: Start isEmpty. Operand 1842 states and 2504 transitions. [2022-07-22 12:56:46,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-22 12:56:46,759 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:56:46,760 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:56:46,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 12:56:46,760 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:56:46,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:56:46,761 INFO L85 PathProgramCache]: Analyzing trace with hash -1464739895, now seen corresponding path program 1 times [2022-07-22 12:56:46,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:56:46,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803545020] [2022-07-22 12:56:46,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:56:46,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:56:46,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:56:46,838 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 12:56:46,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:56:46,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803545020] [2022-07-22 12:56:46,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803545020] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:56:46,840 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:56:46,840 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 12:56:46,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676233572] [2022-07-22 12:56:46,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:56:46,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:56:46,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:56:46,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:56:46,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:56:46,842 INFO L87 Difference]: Start difference. First operand 1842 states and 2504 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 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) [2022-07-22 12:56:48,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:56:48,518 INFO L93 Difference]: Finished difference Result 5395 states and 7326 transitions. [2022-07-22 12:56:48,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:56:48,519 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 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 102 [2022-07-22 12:56:48,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:56:48,527 INFO L225 Difference]: With dead ends: 5395 [2022-07-22 12:56:48,527 INFO L226 Difference]: Without dead ends: 2701 [2022-07-22 12:56:48,530 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 [2022-07-22 12:56:48,535 INFO L413 NwaCegarLoop]: 516 mSDtfsCounter, 368 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 1629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-22 12:56:48,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [368 Valid, 591 Invalid, 1629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-22 12:56:48,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2701 states. [2022-07-22 12:56:48,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2701 to 2701. [2022-07-22 12:56:48,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2701 states, 2700 states have (on average 1.191851851851852) internal successors, (3218), 2700 states have internal predecessors, (3218), 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) [2022-07-22 12:56:48,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2701 states to 2701 states and 3218 transitions. [2022-07-22 12:56:48,569 INFO L78 Accepts]: Start accepts. Automaton has 2701 states and 3218 transitions. Word has length 102 [2022-07-22 12:56:48,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:56:48,570 INFO L495 AbstractCegarLoop]: Abstraction has 2701 states and 3218 transitions. [2022-07-22 12:56:48,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 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) [2022-07-22 12:56:48,570 INFO L276 IsEmpty]: Start isEmpty. Operand 2701 states and 3218 transitions. [2022-07-22 12:56:48,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-07-22 12:56:48,579 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:56:48,580 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:56:48,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 12:56:48,580 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:56:48,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:56:48,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1549840643, now seen corresponding path program 1 times [2022-07-22 12:56:48,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:56:48,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856516606] [2022-07-22 12:56:48,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:56:48,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:56:48,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:56:48,718 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 12:56:48,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:56:48,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856516606] [2022-07-22 12:56:48,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856516606] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:56:48,719 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:56:48,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:56:48,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394280084] [2022-07-22 12:56:48,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:56:48,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:56:48,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:56:48,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:56:48,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:56:48,720 INFO L87 Difference]: Start difference. First operand 2701 states and 3218 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 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) [2022-07-22 12:56:50,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:56:50,067 INFO L93 Difference]: Finished difference Result 7108 states and 8598 transitions. [2022-07-22 12:56:50,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:56:50,068 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 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 162 [2022-07-22 12:56:50,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:56:50,078 INFO L225 Difference]: With dead ends: 7108 [2022-07-22 12:56:50,078 INFO L226 Difference]: Without dead ends: 4409 [2022-07-22 12:56:50,080 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 [2022-07-22 12:56:50,081 INFO L413 NwaCegarLoop]: 726 mSDtfsCounter, 496 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1136 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 1442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 1136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-22 12:56:50,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 784 Invalid, 1442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 1136 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-22 12:56:50,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4409 states. [2022-07-22 12:56:50,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4409 to 4409. [2022-07-22 12:56:50,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4409 states, 4408 states have (on average 1.1705989110707804) internal successors, (5160), 4408 states have internal predecessors, (5160), 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) [2022-07-22 12:56:50,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4409 states to 4409 states and 5160 transitions. [2022-07-22 12:56:50,130 INFO L78 Accepts]: Start accepts. Automaton has 4409 states and 5160 transitions. Word has length 162 [2022-07-22 12:56:50,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:56:50,130 INFO L495 AbstractCegarLoop]: Abstraction has 4409 states and 5160 transitions. [2022-07-22 12:56:50,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 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) [2022-07-22 12:56:50,131 INFO L276 IsEmpty]: Start isEmpty. Operand 4409 states and 5160 transitions. [2022-07-22 12:56:50,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-07-22 12:56:50,132 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:56:50,132 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:56:50,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 12:56:50,132 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:56:50,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:56:50,133 INFO L85 PathProgramCache]: Analyzing trace with hash -2134418504, now seen corresponding path program 1 times [2022-07-22 12:56:50,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:56:50,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699445161] [2022-07-22 12:56:50,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:56:50,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:56:50,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:56:50,216 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-07-22 12:56:50,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:56:50,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699445161] [2022-07-22 12:56:50,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699445161] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:56:50,219 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:56:50,219 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:56:50,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869879465] [2022-07-22 12:56:50,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:56:50,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:56:50,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:56:50,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:56:50,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:56:50,222 INFO L87 Difference]: Start difference. First operand 4409 states and 5160 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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) [2022-07-22 12:56:51,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:56:51,786 INFO L93 Difference]: Finished difference Result 10936 states and 12970 transitions. [2022-07-22 12:56:51,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:56:51,787 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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 164 [2022-07-22 12:56:51,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:56:51,803 INFO L225 Difference]: With dead ends: 10936 [2022-07-22 12:56:51,803 INFO L226 Difference]: Without dead ends: 6528 [2022-07-22 12:56:51,808 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 [2022-07-22 12:56:51,809 INFO L413 NwaCegarLoop]: 382 mSDtfsCounter, 441 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1215 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 1489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 1215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-22 12:56:51,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [441 Valid, 444 Invalid, 1489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 1215 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-22 12:56:51,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6528 states. [2022-07-22 12:56:51,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6528 to 4382. [2022-07-22 12:56:51,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4382 states, 4381 states have (on average 1.1684546907098836) internal successors, (5119), 4381 states have internal predecessors, (5119), 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) [2022-07-22 12:56:51,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4382 states to 4382 states and 5119 transitions. [2022-07-22 12:56:51,905 INFO L78 Accepts]: Start accepts. Automaton has 4382 states and 5119 transitions. Word has length 164 [2022-07-22 12:56:51,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:56:51,906 INFO L495 AbstractCegarLoop]: Abstraction has 4382 states and 5119 transitions. [2022-07-22 12:56:51,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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) [2022-07-22 12:56:51,908 INFO L276 IsEmpty]: Start isEmpty. Operand 4382 states and 5119 transitions. [2022-07-22 12:56:51,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-07-22 12:56:51,910 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:56:51,911 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2022-07-22 12:56:51,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 12:56:51,911 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:56:51,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:56:51,912 INFO L85 PathProgramCache]: Analyzing trace with hash 741644542, now seen corresponding path program 1 times [2022-07-22 12:56:51,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:56:51,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215016214] [2022-07-22 12:56:51,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:56:51,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:56:51,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:56:52,083 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 15 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 12:56:52,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:56:52,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215016214] [2022-07-22 12:56:52,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215016214] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 12:56:52,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68325273] [2022-07-22 12:56:52,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:56:52,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 12:56:52,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 12:56:52,087 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) [2022-07-22 12:56:52,118 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 12:56:52,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:56:52,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-22 12:56:52,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 12:56:52,734 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 15 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 12:56:52,735 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 12:56:53,000 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 12:56:53,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [68325273] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-22 12:56:53,000 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-22 12:56:53,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2022-07-22 12:56:53,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955628226] [2022-07-22 12:56:53,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:56:53,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 12:56:53,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:56:53,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 12:56:53,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-07-22 12:56:53,003 INFO L87 Difference]: Start difference. First operand 4382 states and 5119 transitions. Second operand has 4 states, 4 states have (on average 57.5) internal successors, (230), 3 states have internal predecessors, (230), 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) [2022-07-22 12:56:55,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:56:55,634 INFO L93 Difference]: Finished difference Result 15171 states and 17882 transitions. [2022-07-22 12:56:55,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 12:56:55,634 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 57.5) internal successors, (230), 3 states have internal predecessors, (230), 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 [2022-07-22 12:56:55,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:56:55,661 INFO L225 Difference]: With dead ends: 15171 [2022-07-22 12:56:55,661 INFO L226 Difference]: Without dead ends: 10791 [2022-07-22 12:56:55,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 461 GetRequests, 455 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-07-22 12:56:55,668 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 980 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 2171 mSolverCounterSat, 1022 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 980 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 3193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1022 IncrementalHoareTripleChecker+Valid, 2171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-22 12:56:55,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [980 Valid, 145 Invalid, 3193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1022 Valid, 2171 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-22 12:56:55,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10791 states. [2022-07-22 12:56:55,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10791 to 10789. [2022-07-22 12:56:55,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10789 states, 10788 states have (on average 1.1710233592880979) internal successors, (12633), 10788 states have internal predecessors, (12633), 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) [2022-07-22 12:56:55,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10789 states to 10789 states and 12633 transitions. [2022-07-22 12:56:55,796 INFO L78 Accepts]: Start accepts. Automaton has 10789 states and 12633 transitions. Word has length 230 [2022-07-22 12:56:55,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:56:55,796 INFO L495 AbstractCegarLoop]: Abstraction has 10789 states and 12633 transitions. [2022-07-22 12:56:55,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.5) internal successors, (230), 3 states have internal predecessors, (230), 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) [2022-07-22 12:56:55,797 INFO L276 IsEmpty]: Start isEmpty. Operand 10789 states and 12633 transitions. [2022-07-22 12:56:55,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2022-07-22 12:56:55,798 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:56:55,799 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:56:55,833 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-22 12:56:56,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-07-22 12:56:56,016 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:56:56,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:56:56,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1310280645, now seen corresponding path program 1 times [2022-07-22 12:56:56,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:56:56,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168498879] [2022-07-22 12:56:56,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:56:56,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:56:56,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:56:56,135 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-07-22 12:56:56,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:56:56,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168498879] [2022-07-22 12:56:56,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168498879] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:56:56,136 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:56:56,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:56:56,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596478815] [2022-07-22 12:56:56,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:56:56,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:56:56,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:56:56,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:56:56,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:56:56,139 INFO L87 Difference]: Start difference. First operand 10789 states and 12633 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 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) [2022-07-22 12:56:57,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:56:57,619 INFO L93 Difference]: Finished difference Result 23703 states and 27793 transitions. [2022-07-22 12:56:57,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:56:57,619 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 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 242 [2022-07-22 12:56:57,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:56:57,641 INFO L225 Difference]: With dead ends: 23703 [2022-07-22 12:56:57,642 INFO L226 Difference]: Without dead ends: 12491 [2022-07-22 12:56:57,651 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 [2022-07-22 12:56:57,655 INFO L413 NwaCegarLoop]: 773 mSDtfsCounter, 383 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 1194 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 383 SdHoareTripleChecker+Valid, 842 SdHoareTripleChecker+Invalid, 1400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 1194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-22 12:56:57,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [383 Valid, 842 Invalid, 1400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 1194 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-22 12:56:57,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12491 states. [2022-07-22 12:56:57,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12491 to 12491. [2022-07-22 12:56:57,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12491 states, 12490 states have (on average 1.1501200960768614) internal successors, (14365), 12490 states have internal predecessors, (14365), 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) [2022-07-22 12:56:57,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12491 states to 12491 states and 14365 transitions. [2022-07-22 12:56:57,796 INFO L78 Accepts]: Start accepts. Automaton has 12491 states and 14365 transitions. Word has length 242 [2022-07-22 12:56:57,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:56:57,797 INFO L495 AbstractCegarLoop]: Abstraction has 12491 states and 14365 transitions. [2022-07-22 12:56:57,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 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) [2022-07-22 12:56:57,798 INFO L276 IsEmpty]: Start isEmpty. Operand 12491 states and 14365 transitions. [2022-07-22 12:56:57,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2022-07-22 12:56:57,801 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:56:57,802 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2022-07-22 12:56:57,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 12:56:57,802 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:56:57,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:56:57,803 INFO L85 PathProgramCache]: Analyzing trace with hash -2057438562, now seen corresponding path program 1 times [2022-07-22 12:56:57,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:56:57,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714228441] [2022-07-22 12:56:57,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:56:57,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:56:57,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:56:57,898 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2022-07-22 12:56:57,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:56:57,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714228441] [2022-07-22 12:56:57,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714228441] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:56:57,899 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:56:57,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:56:57,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949266455] [2022-07-22 12:56:57,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:56:57,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:56:57,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:56:57,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:56:57,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:56:57,903 INFO L87 Difference]: Start difference. First operand 12491 states and 14365 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 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) [2022-07-22 12:56:59,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:56:59,537 INFO L93 Difference]: Finished difference Result 30511 states and 34976 transitions. [2022-07-22 12:56:59,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:56:59,538 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 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 282 [2022-07-22 12:56:59,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:56:59,564 INFO L225 Difference]: With dead ends: 30511 [2022-07-22 12:56:59,564 INFO L226 Difference]: Without dead ends: 15866 [2022-07-22 12:56:59,577 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 [2022-07-22 12:56:59,578 INFO L413 NwaCegarLoop]: 610 mSDtfsCounter, 534 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 1182 mSolverCounterSat, 327 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 534 SdHoareTripleChecker+Valid, 640 SdHoareTripleChecker+Invalid, 1509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 327 IncrementalHoareTripleChecker+Valid, 1182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-22 12:56:59,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [534 Valid, 640 Invalid, 1509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [327 Valid, 1182 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-22 12:56:59,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15866 states. [2022-07-22 12:56:59,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15866 to 15010. [2022-07-22 12:56:59,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15010 states, 15009 states have (on average 1.1277233659804118) internal successors, (16926), 15009 states have internal predecessors, (16926), 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) [2022-07-22 12:56:59,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15010 states to 15010 states and 16926 transitions. [2022-07-22 12:56:59,740 INFO L78 Accepts]: Start accepts. Automaton has 15010 states and 16926 transitions. Word has length 282 [2022-07-22 12:56:59,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:56:59,741 INFO L495 AbstractCegarLoop]: Abstraction has 15010 states and 16926 transitions. [2022-07-22 12:56:59,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 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) [2022-07-22 12:56:59,741 INFO L276 IsEmpty]: Start isEmpty. Operand 15010 states and 16926 transitions. [2022-07-22 12:56:59,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2022-07-22 12:56:59,744 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:56:59,745 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:56:59,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 12:56:59,745 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:56:59,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:56:59,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1507858308, now seen corresponding path program 1 times [2022-07-22 12:56:59,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:56:59,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425723604] [2022-07-22 12:56:59,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:56:59,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:56:59,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:56:59,898 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 179 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-07-22 12:56:59,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:56:59,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425723604] [2022-07-22 12:56:59,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425723604] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:56:59,899 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:56:59,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:56:59,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398208431] [2022-07-22 12:56:59,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:56:59,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:56:59,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:56:59,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:56:59,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:56:59,902 INFO L87 Difference]: Start difference. First operand 15010 states and 16926 transitions. Second operand has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 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) [2022-07-22 12:57:01,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:57:01,597 INFO L93 Difference]: Finished difference Result 38116 states and 42953 transitions. [2022-07-22 12:57:01,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:57:01,597 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 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 304 [2022-07-22 12:57:01,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:57:01,627 INFO L225 Difference]: With dead ends: 38116 [2022-07-22 12:57:01,627 INFO L226 Difference]: Without dead ends: 23108 [2022-07-22 12:57:01,642 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 [2022-07-22 12:57:01,643 INFO L413 NwaCegarLoop]: 733 mSDtfsCounter, 316 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 1271 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 1404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 1271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-22 12:57:01,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 784 Invalid, 1404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 1271 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-22 12:57:01,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23108 states. [2022-07-22 12:57:01,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23108 to 22244. [2022-07-22 12:57:01,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22244 states, 22243 states have (on average 1.1109562559007329) internal successors, (24711), 22243 states have internal predecessors, (24711), 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) [2022-07-22 12:57:01,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22244 states to 22244 states and 24711 transitions. [2022-07-22 12:57:01,965 INFO L78 Accepts]: Start accepts. Automaton has 22244 states and 24711 transitions. Word has length 304 [2022-07-22 12:57:01,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:57:01,966 INFO L495 AbstractCegarLoop]: Abstraction has 22244 states and 24711 transitions. [2022-07-22 12:57:01,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 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) [2022-07-22 12:57:01,966 INFO L276 IsEmpty]: Start isEmpty. Operand 22244 states and 24711 transitions. [2022-07-22 12:57:01,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2022-07-22 12:57:01,982 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:57:01,982 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:57:01,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 12:57:01,983 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:57:01,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:57:01,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1876690948, now seen corresponding path program 1 times [2022-07-22 12:57:01,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:57:01,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807296662] [2022-07-22 12:57:01,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:57:01,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:57:02,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:57:02,153 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2022-07-22 12:57:02,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:57:02,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807296662] [2022-07-22 12:57:02,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807296662] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:57:02,154 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:57:02,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:57:02,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15204703] [2022-07-22 12:57:02,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:57:02,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:57:02,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:57:02,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:57:02,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:57:02,156 INFO L87 Difference]: Start difference. First operand 22244 states and 24711 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 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) [2022-07-22 12:57:03,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:57:03,486 INFO L93 Difference]: Finished difference Result 47458 states and 52810 transitions. [2022-07-22 12:57:03,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:57:03,486 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 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 309 [2022-07-22 12:57:03,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:57:03,506 INFO L225 Difference]: With dead ends: 47458 [2022-07-22 12:57:03,506 INFO L226 Difference]: Without dead ends: 24791 [2022-07-22 12:57:03,514 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 [2022-07-22 12:57:03,514 INFO L413 NwaCegarLoop]: 658 mSDtfsCounter, 460 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 1187 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 702 SdHoareTripleChecker+Invalid, 1314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 1187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-22 12:57:03,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [460 Valid, 702 Invalid, 1314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 1187 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-22 12:57:03,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24791 states. [2022-07-22 12:57:03,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24791 to 24785. [2022-07-22 12:57:03,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24785 states, 24784 states have (on average 1.107125564880568) internal successors, (27439), 24784 states have internal predecessors, (27439), 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) [2022-07-22 12:57:03,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24785 states to 24785 states and 27439 transitions. [2022-07-22 12:57:03,737 INFO L78 Accepts]: Start accepts. Automaton has 24785 states and 27439 transitions. Word has length 309 [2022-07-22 12:57:03,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:57:03,738 INFO L495 AbstractCegarLoop]: Abstraction has 24785 states and 27439 transitions. [2022-07-22 12:57:03,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 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) [2022-07-22 12:57:03,738 INFO L276 IsEmpty]: Start isEmpty. Operand 24785 states and 27439 transitions. [2022-07-22 12:57:03,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2022-07-22 12:57:03,743 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:57:03,744 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:57:03,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 12:57:03,744 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:57:03,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:57:03,745 INFO L85 PathProgramCache]: Analyzing trace with hash 2084541808, now seen corresponding path program 1 times [2022-07-22 12:57:03,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:57:03,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506884768] [2022-07-22 12:57:03,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:57:03,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:57:03,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:57:03,956 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 12:57:03,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:57:03,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506884768] [2022-07-22 12:57:03,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506884768] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:57:03,956 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:57:03,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:57:03,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154897337] [2022-07-22 12:57:03,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:57:03,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 12:57:03,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:57:03,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 12:57:03,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-22 12:57:03,959 INFO L87 Difference]: Start difference. First operand 24785 states and 27439 transitions. Second operand has 4 states, 4 states have (on average 87.25) internal successors, (349), 3 states have internal predecessors, (349), 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) [2022-07-22 12:57:06,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:57:06,461 INFO L93 Difference]: Finished difference Result 63641 states and 70643 transitions. [2022-07-22 12:57:06,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 12:57:06,462 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 87.25) internal successors, (349), 3 states have internal predecessors, (349), 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 [2022-07-22 12:57:06,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:57:06,493 INFO L225 Difference]: With dead ends: 63641 [2022-07-22 12:57:06,493 INFO L226 Difference]: Without dead ends: 38008 [2022-07-22 12:57:06,506 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 [2022-07-22 12:57:06,506 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 556 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 2614 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 556 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 2772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 2614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-22 12:57:06,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [556 Valid, 326 Invalid, 2772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 2614 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-22 12:57:06,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38008 states. [2022-07-22 12:57:06,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38008 to 37986. [2022-07-22 12:57:06,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37986 states, 37985 states have (on average 1.1046728971962616) internal successors, (41961), 37985 states have internal predecessors, (41961), 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) [2022-07-22 12:57:06,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37986 states to 37986 states and 41961 transitions. [2022-07-22 12:57:06,862 INFO L78 Accepts]: Start accepts. Automaton has 37986 states and 41961 transitions. Word has length 349 [2022-07-22 12:57:06,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:57:06,864 INFO L495 AbstractCegarLoop]: Abstraction has 37986 states and 41961 transitions. [2022-07-22 12:57:06,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 87.25) internal successors, (349), 3 states have internal predecessors, (349), 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) [2022-07-22 12:57:06,864 INFO L276 IsEmpty]: Start isEmpty. Operand 37986 states and 41961 transitions. [2022-07-22 12:57:06,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2022-07-22 12:57:06,869 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:57:06,869 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 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] [2022-07-22 12:57:06,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 12:57:06,870 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:57:06,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:57:06,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1238549206, now seen corresponding path program 1 times [2022-07-22 12:57:06,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:57:06,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127719636] [2022-07-22 12:57:06,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:57:06,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:57:06,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:57:06,982 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 210 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-07-22 12:57:06,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:57:06,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127719636] [2022-07-22 12:57:06,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127719636] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:57:06,983 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:57:06,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:57:06,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546384243] [2022-07-22 12:57:06,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:57:06,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:57:06,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:57:06,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:57:06,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:57:06,985 INFO L87 Difference]: Start difference. First operand 37986 states and 41961 transitions. Second operand has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 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) [2022-07-22 12:57:08,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:57:08,691 INFO L93 Difference]: Finished difference Result 85365 states and 94453 transitions. [2022-07-22 12:57:08,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:57:08,691 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 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 353 [2022-07-22 12:57:08,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:57:08,815 INFO L225 Difference]: With dead ends: 85365 [2022-07-22 12:57:08,815 INFO L226 Difference]: Without dead ends: 47381 [2022-07-22 12:57:08,838 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 [2022-07-22 12:57:08,839 INFO L413 NwaCegarLoop]: 620 mSDtfsCounter, 337 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 1247 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 652 SdHoareTripleChecker+Invalid, 1413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 1247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-22 12:57:08,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [337 Valid, 652 Invalid, 1413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 1247 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-22 12:57:08,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47381 states. [2022-07-22 12:57:09,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47381 to 46935. [2022-07-22 12:57:09,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46935 states, 46934 states have (on average 1.1060212212894702) internal successors, (51910), 46934 states have internal predecessors, (51910), 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) [2022-07-22 12:57:09,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46935 states to 46935 states and 51910 transitions. [2022-07-22 12:57:09,288 INFO L78 Accepts]: Start accepts. Automaton has 46935 states and 51910 transitions. Word has length 353 [2022-07-22 12:57:09,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:57:09,289 INFO L495 AbstractCegarLoop]: Abstraction has 46935 states and 51910 transitions. [2022-07-22 12:57:09,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 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) [2022-07-22 12:57:09,289 INFO L276 IsEmpty]: Start isEmpty. Operand 46935 states and 51910 transitions. [2022-07-22 12:57:09,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2022-07-22 12:57:09,299 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:57:09,299 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 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] [2022-07-22 12:57:09,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-22 12:57:09,300 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:57:09,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:57:09,300 INFO L85 PathProgramCache]: Analyzing trace with hash -2012753800, now seen corresponding path program 1 times [2022-07-22 12:57:09,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:57:09,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927242710] [2022-07-22 12:57:09,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:57:09,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:57:09,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:57:09,520 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 260 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-07-22 12:57:09,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:57:09,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927242710] [2022-07-22 12:57:09,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927242710] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:57:09,521 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:57:09,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:57:09,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134211219] [2022-07-22 12:57:09,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:57:09,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:57:09,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:57:09,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:57:09,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:57:09,523 INFO L87 Difference]: Start difference. First operand 46935 states and 51910 transitions. Second operand has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 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) [2022-07-22 12:57:11,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:57:11,154 INFO L93 Difference]: Finished difference Result 104932 states and 116096 transitions. [2022-07-22 12:57:11,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:57:11,155 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 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 424 [2022-07-22 12:57:11,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:57:11,218 INFO L225 Difference]: With dead ends: 104932 [2022-07-22 12:57:11,219 INFO L226 Difference]: Without dead ends: 57999 [2022-07-22 12:57:11,238 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 [2022-07-22 12:57:11,239 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 305 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 1187 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 1310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 1187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-22 12:57:11,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 327 Invalid, 1310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 1187 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-22 12:57:11,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57999 states. [2022-07-22 12:57:11,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57999 to 54591. [2022-07-22 12:57:11,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54591 states, 54590 states have (on average 1.0996519509067595) internal successors, (60030), 54590 states have internal predecessors, (60030), 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) [2022-07-22 12:57:11,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54591 states to 54591 states and 60030 transitions. [2022-07-22 12:57:11,831 INFO L78 Accepts]: Start accepts. Automaton has 54591 states and 60030 transitions. Word has length 424 [2022-07-22 12:57:11,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:57:11,831 INFO L495 AbstractCegarLoop]: Abstraction has 54591 states and 60030 transitions. [2022-07-22 12:57:11,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 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) [2022-07-22 12:57:11,832 INFO L276 IsEmpty]: Start isEmpty. Operand 54591 states and 60030 transitions. [2022-07-22 12:57:11,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 474 [2022-07-22 12:57:11,850 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:57:11,850 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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, 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, 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, 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] [2022-07-22 12:57:11,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-22 12:57:11,851 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:57:11,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:57:11,851 INFO L85 PathProgramCache]: Analyzing trace with hash 368948727, now seen corresponding path program 1 times [2022-07-22 12:57:11,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:57:11,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048965994] [2022-07-22 12:57:11,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:57:11,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:57:11,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:57:12,180 INFO L134 CoverageAnalysis]: Checked inductivity of 607 backedges. 338 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2022-07-22 12:57:12,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:57:12,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048965994] [2022-07-22 12:57:12,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048965994] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:57:12,181 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:57:12,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:57:12,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618694079] [2022-07-22 12:57:12,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:57:12,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:57:12,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:57:12,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:57:12,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:57:12,183 INFO L87 Difference]: Start difference. First operand 54591 states and 60030 transitions. Second operand has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 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) [2022-07-22 12:57:13,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:57:13,845 INFO L93 Difference]: Finished difference Result 119829 states and 131917 transitions. [2022-07-22 12:57:13,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:57:13,845 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 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 473 [2022-07-22 12:57:13,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:57:13,908 INFO L225 Difference]: With dead ends: 119829 [2022-07-22 12:57:13,908 INFO L226 Difference]: Without dead ends: 65240 [2022-07-22 12:57:13,926 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 [2022-07-22 12:57:13,927 INFO L413 NwaCegarLoop]: 278 mSDtfsCounter, 316 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 1169 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 1330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 1169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-22 12:57:13,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 325 Invalid, 1330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 1169 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-22 12:57:13,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65240 states. [2022-07-22 12:57:14,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65240 to 57569. [2022-07-22 12:57:14,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57569 states, 57568 states have (on average 1.097206781545303) internal successors, (63164), 57568 states have internal predecessors, (63164), 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) [2022-07-22 12:57:14,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57569 states to 57569 states and 63164 transitions. [2022-07-22 12:57:14,490 INFO L78 Accepts]: Start accepts. Automaton has 57569 states and 63164 transitions. Word has length 473 [2022-07-22 12:57:14,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:57:14,490 INFO L495 AbstractCegarLoop]: Abstraction has 57569 states and 63164 transitions. [2022-07-22 12:57:14,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 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) [2022-07-22 12:57:14,491 INFO L276 IsEmpty]: Start isEmpty. Operand 57569 states and 63164 transitions. [2022-07-22 12:57:14,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 485 [2022-07-22 12:57:14,501 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:57:14,501 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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, 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, 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, 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] [2022-07-22 12:57:14,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-22 12:57:14,502 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:57:14,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:57:14,502 INFO L85 PathProgramCache]: Analyzing trace with hash -686282333, now seen corresponding path program 1 times [2022-07-22 12:57:14,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:57:14,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809277275] [2022-07-22 12:57:14,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:57:14,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:57:14,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:57:14,650 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 339 proven. 0 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2022-07-22 12:57:14,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:57:14,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809277275] [2022-07-22 12:57:14,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809277275] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:57:14,651 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:57:14,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 12:57:14,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956543100] [2022-07-22 12:57:14,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:57:14,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:57:14,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:57:14,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:57:14,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:57:14,654 INFO L87 Difference]: Start difference. First operand 57569 states and 63164 transitions. Second operand has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 2 states have internal predecessors, (292), 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) [2022-07-22 12:57:15,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:57:15,842 INFO L93 Difference]: Finished difference Result 114273 states and 125404 transitions. [2022-07-22 12:57:15,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:57:15,843 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 2 states have internal predecessors, (292), 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 484 [2022-07-22 12:57:15,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:57:15,906 INFO L225 Difference]: With dead ends: 114273 [2022-07-22 12:57:15,907 INFO L226 Difference]: Without dead ends: 56705 [2022-07-22 12:57:15,942 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 [2022-07-22 12:57:15,943 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 572 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 623 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 572 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-22 12:57:15,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [572 Valid, 82 Invalid, 629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 623 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-22 12:57:15,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56705 states. [2022-07-22 12:57:16,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56705 to 56701. [2022-07-22 12:57:16,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56701 states, 56700 states have (on average 1.0971428571428572) internal successors, (62208), 56700 states have internal predecessors, (62208), 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) [2022-07-22 12:57:16,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56701 states to 56701 states and 62208 transitions. [2022-07-22 12:57:16,608 INFO L78 Accepts]: Start accepts. Automaton has 56701 states and 62208 transitions. Word has length 484 [2022-07-22 12:57:16,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:57:16,608 INFO L495 AbstractCegarLoop]: Abstraction has 56701 states and 62208 transitions. [2022-07-22 12:57:16,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 2 states have internal predecessors, (292), 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) [2022-07-22 12:57:16,609 INFO L276 IsEmpty]: Start isEmpty. Operand 56701 states and 62208 transitions. [2022-07-22 12:57:16,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2022-07-22 12:57:16,618 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:57:16,619 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:57:16,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-22 12:57:16,619 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:57:16,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:57:16,620 INFO L85 PathProgramCache]: Analyzing trace with hash 144822832, now seen corresponding path program 1 times [2022-07-22 12:57:16,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:57:16,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105565724] [2022-07-22 12:57:16,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:57:16,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:57:16,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:57:16,930 INFO L134 CoverageAnalysis]: Checked inductivity of 586 backedges. 347 proven. 0 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2022-07-22 12:57:16,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:57:16,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105565724] [2022-07-22 12:57:16,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105565724] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:57:16,930 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:57:16,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:57:16,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037474531] [2022-07-22 12:57:16,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:57:16,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:57:16,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:57:16,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:57:16,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:57:16,932 INFO L87 Difference]: Start difference. First operand 56701 states and 62208 transitions. Second operand has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 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) [2022-07-22 12:57:18,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:57:18,509 INFO L93 Difference]: Finished difference Result 122760 states and 134268 transitions. [2022-07-22 12:57:18,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:57:18,510 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 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 488 [2022-07-22 12:57:18,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:57:18,576 INFO L225 Difference]: With dead ends: 122760 [2022-07-22 12:57:18,576 INFO L226 Difference]: Without dead ends: 66061 [2022-07-22 12:57:18,607 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 [2022-07-22 12:57:18,607 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 333 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 1120 mSolverCounterSat, 248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 1368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 1120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-22 12:57:18,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [333 Valid, 119 Invalid, 1368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [248 Valid, 1120 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-22 12:57:18,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66061 states. [2022-07-22 12:57:19,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66061 to 52842. [2022-07-22 12:57:19,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52842 states, 52841 states have (on average 1.088756836547378) internal successors, (57531), 52841 states have internal predecessors, (57531), 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) [2022-07-22 12:57:19,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52842 states to 52842 states and 57531 transitions. [2022-07-22 12:57:19,349 INFO L78 Accepts]: Start accepts. Automaton has 52842 states and 57531 transitions. Word has length 488 [2022-07-22 12:57:19,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:57:19,350 INFO L495 AbstractCegarLoop]: Abstraction has 52842 states and 57531 transitions. [2022-07-22 12:57:19,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 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) [2022-07-22 12:57:19,350 INFO L276 IsEmpty]: Start isEmpty. Operand 52842 states and 57531 transitions. [2022-07-22 12:57:19,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 588 [2022-07-22 12:57:19,368 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:57:19,369 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:57:19,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-22 12:57:19,369 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:57:19,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:57:19,370 INFO L85 PathProgramCache]: Analyzing trace with hash -439942955, now seen corresponding path program 1 times [2022-07-22 12:57:19,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:57:19,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420511668] [2022-07-22 12:57:19,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:57:19,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:57:19,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:57:19,569 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2022-07-22 12:57:19,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:57:19,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420511668] [2022-07-22 12:57:19,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420511668] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:57:19,570 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:57:19,570 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:57:19,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243596274] [2022-07-22 12:57:19,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:57:19,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:57:19,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:57:19,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:57:19,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:57:19,573 INFO L87 Difference]: Start difference. First operand 52842 states and 57531 transitions. Second operand has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 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) [2022-07-22 12:57:21,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:57:21,172 INFO L93 Difference]: Finished difference Result 108662 states and 118298 transitions. [2022-07-22 12:57:21,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:57:21,173 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 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 587 [2022-07-22 12:57:21,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:57:21,237 INFO L225 Difference]: With dead ends: 108662 [2022-07-22 12:57:21,238 INFO L226 Difference]: Without dead ends: 55397 [2022-07-22 12:57:21,272 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 [2022-07-22 12:57:21,275 INFO L413 NwaCegarLoop]: 618 mSDtfsCounter, 453 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 1148 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 651 SdHoareTripleChecker+Invalid, 1266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 1148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-22 12:57:21,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [453 Valid, 651 Invalid, 1266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 1148 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-22 12:57:21,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55397 states. [2022-07-22 12:57:21,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55397 to 51559. [2022-07-22 12:57:21,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51559 states, 51558 states have (on average 1.0857674851623413) internal successors, (55980), 51558 states have internal predecessors, (55980), 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) [2022-07-22 12:57:21,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51559 states to 51559 states and 55980 transitions. [2022-07-22 12:57:21,904 INFO L78 Accepts]: Start accepts. Automaton has 51559 states and 55980 transitions. Word has length 587 [2022-07-22 12:57:21,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:57:21,904 INFO L495 AbstractCegarLoop]: Abstraction has 51559 states and 55980 transitions. [2022-07-22 12:57:21,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 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) [2022-07-22 12:57:21,904 INFO L276 IsEmpty]: Start isEmpty. Operand 51559 states and 55980 transitions. [2022-07-22 12:57:21,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 626 [2022-07-22 12:57:21,921 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:57:21,921 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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, 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, 4, 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, 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, 1, 1, 1, 1, 1, 1] [2022-07-22 12:57:21,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-22 12:57:21,922 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:57:21,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:57:21,922 INFO L85 PathProgramCache]: Analyzing trace with hash 678088477, now seen corresponding path program 1 times [2022-07-22 12:57:21,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:57:21,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630953925] [2022-07-22 12:57:21,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:57:21,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:57:21,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:57:22,095 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 398 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2022-07-22 12:57:22,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:57:22,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630953925] [2022-07-22 12:57:22,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630953925] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:57:22,096 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:57:22,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:57:22,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315433585] [2022-07-22 12:57:22,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:57:22,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:57:22,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:57:22,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:57:22,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:57:22,098 INFO L87 Difference]: Start difference. First operand 51559 states and 55980 transitions. Second operand has 3 states, 3 states have (on average 152.0) internal successors, (456), 3 states have internal predecessors, (456), 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) [2022-07-22 12:57:23,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:57:23,658 INFO L93 Difference]: Finished difference Result 104388 states and 113357 transitions. [2022-07-22 12:57:23,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:57:23,659 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 152.0) internal successors, (456), 3 states have internal predecessors, (456), 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 625 [2022-07-22 12:57:23,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:57:23,709 INFO L225 Difference]: With dead ends: 104388 [2022-07-22 12:57:23,709 INFO L226 Difference]: Without dead ends: 52831 [2022-07-22 12:57:23,734 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 [2022-07-22 12:57:23,735 INFO L413 NwaCegarLoop]: 587 mSDtfsCounter, 477 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 1091 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 614 SdHoareTripleChecker+Invalid, 1235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 1091 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-22 12:57:23,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [477 Valid, 614 Invalid, 1235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 1091 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-22 12:57:23,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52831 states. [2022-07-22 12:57:24,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52831 to 52828. [2022-07-22 12:57:24,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52828 states, 52827 states have (on average 1.0782175781323944) internal successors, (56959), 52827 states have internal predecessors, (56959), 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) [2022-07-22 12:57:24,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52828 states to 52828 states and 56959 transitions. [2022-07-22 12:57:24,343 INFO L78 Accepts]: Start accepts. Automaton has 52828 states and 56959 transitions. Word has length 625 [2022-07-22 12:57:24,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:57:24,344 INFO L495 AbstractCegarLoop]: Abstraction has 52828 states and 56959 transitions. [2022-07-22 12:57:24,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 152.0) internal successors, (456), 3 states have internal predecessors, (456), 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) [2022-07-22 12:57:24,344 INFO L276 IsEmpty]: Start isEmpty. Operand 52828 states and 56959 transitions. [2022-07-22 12:57:24,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 638 [2022-07-22 12:57:24,362 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:57:24,362 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1] [2022-07-22 12:57:24,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-22 12:57:24,362 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:57:24,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:57:24,363 INFO L85 PathProgramCache]: Analyzing trace with hash 46869252, now seen corresponding path program 1 times [2022-07-22 12:57:24,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:57:24,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179746718] [2022-07-22 12:57:24,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:57:24,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:57:24,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:57:24,541 INFO L134 CoverageAnalysis]: Checked inductivity of 965 backedges. 794 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2022-07-22 12:57:24,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:57:24,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179746718] [2022-07-22 12:57:24,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179746718] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:57:24,542 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:57:24,542 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 12:57:24,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582724674] [2022-07-22 12:57:24,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:57:24,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 12:57:24,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:57:24,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 12:57:24,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-22 12:57:24,544 INFO L87 Difference]: Start difference. First operand 52828 states and 56959 transitions. Second operand has 4 states, 4 states have (on average 119.0) internal successors, (476), 4 states have internal predecessors, (476), 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) [2022-07-22 12:57:27,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:57:27,139 INFO L93 Difference]: Finished difference Result 124839 states and 134597 transitions. [2022-07-22 12:57:27,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 12:57:27,140 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 119.0) internal successors, (476), 4 states have internal predecessors, (476), 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 637 [2022-07-22 12:57:27,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:57:27,217 INFO L225 Difference]: With dead ends: 124839 [2022-07-22 12:57:27,217 INFO L226 Difference]: Without dead ends: 72013 [2022-07-22 12:57:27,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-22 12:57:27,247 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 781 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 2157 mSolverCounterSat, 320 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 781 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 2477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 320 IncrementalHoareTripleChecker+Valid, 2157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-22 12:57:27,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [781 Valid, 129 Invalid, 2477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [320 Valid, 2157 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-22 12:57:27,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72013 states. [2022-07-22 12:57:27,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72013 to 69877. [2022-07-22 12:57:27,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69877 states, 69876 states have (on average 1.0778521953174194) internal successors, (75316), 69876 states have internal predecessors, (75316), 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) [2022-07-22 12:57:27,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69877 states to 69877 states and 75316 transitions. [2022-07-22 12:57:27,991 INFO L78 Accepts]: Start accepts. Automaton has 69877 states and 75316 transitions. Word has length 637 [2022-07-22 12:57:27,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:57:27,991 INFO L495 AbstractCegarLoop]: Abstraction has 69877 states and 75316 transitions. [2022-07-22 12:57:27,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 119.0) internal successors, (476), 4 states have internal predecessors, (476), 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) [2022-07-22 12:57:27,991 INFO L276 IsEmpty]: Start isEmpty. Operand 69877 states and 75316 transitions. [2022-07-22 12:57:28,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 657 [2022-07-22 12:57:28,012 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:57:28,012 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2022-07-22 12:57:28,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-22 12:57:28,012 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:57:28,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:57:28,013 INFO L85 PathProgramCache]: Analyzing trace with hash -792180794, now seen corresponding path program 1 times [2022-07-22 12:57:28,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:57:28,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127708582] [2022-07-22 12:57:28,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:57:28,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:57:28,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:57:28,358 INFO L134 CoverageAnalysis]: Checked inductivity of 1026 backedges. 773 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2022-07-22 12:57:28,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:57:28,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127708582] [2022-07-22 12:57:28,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127708582] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:57:28,359 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:57:28,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:57:28,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561859941] [2022-07-22 12:57:28,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:57:28,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:57:28,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:57:28,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:57:28,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:57:28,360 INFO L87 Difference]: Start difference. First operand 69877 states and 75316 transitions. Second operand has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 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) [2022-07-22 12:57:29,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:57:29,857 INFO L93 Difference]: Finished difference Result 145291 states and 156721 transitions. [2022-07-22 12:57:29,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:57:29,858 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 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 656 [2022-07-22 12:57:29,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:57:30,100 INFO L225 Difference]: With dead ends: 145291 [2022-07-22 12:57:30,100 INFO L226 Difference]: Without dead ends: 75416 [2022-07-22 12:57:30,128 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 [2022-07-22 12:57:30,130 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 360 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 1096 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 1248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 1096 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-22 12:57:30,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 231 Invalid, 1248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 1096 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-22 12:57:30,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75416 states. [2022-07-22 12:57:30,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75416 to 75412. [2022-07-22 12:57:30,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75412 states, 75411 states have (on average 1.073981249419846) internal successors, (80990), 75411 states have internal predecessors, (80990), 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) [2022-07-22 12:57:31,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75412 states to 75412 states and 80990 transitions. [2022-07-22 12:57:31,015 INFO L78 Accepts]: Start accepts. Automaton has 75412 states and 80990 transitions. Word has length 656 [2022-07-22 12:57:31,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:57:31,015 INFO L495 AbstractCegarLoop]: Abstraction has 75412 states and 80990 transitions. [2022-07-22 12:57:31,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 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) [2022-07-22 12:57:31,015 INFO L276 IsEmpty]: Start isEmpty. Operand 75412 states and 80990 transitions. [2022-07-22 12:57:31,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 745 [2022-07-22 12:57:31,044 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:57:31,045 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 3, 3, 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] [2022-07-22 12:57:31,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-22 12:57:31,045 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:57:31,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:57:31,045 INFO L85 PathProgramCache]: Analyzing trace with hash -580776564, now seen corresponding path program 1 times [2022-07-22 12:57:31,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:57:31,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019707310] [2022-07-22 12:57:31,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:57:31,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:57:31,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:57:31,223 INFO L134 CoverageAnalysis]: Checked inductivity of 1241 backedges. 928 proven. 0 refuted. 0 times theorem prover too weak. 313 trivial. 0 not checked. [2022-07-22 12:57:31,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:57:31,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019707310] [2022-07-22 12:57:31,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019707310] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:57:31,224 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:57:31,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:57:31,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36207221] [2022-07-22 12:57:31,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:57:31,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:57:31,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:57:31,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:57:31,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:57:31,227 INFO L87 Difference]: Start difference. First operand 75412 states and 80990 transitions. Second operand has 3 states, 3 states have (on average 172.0) internal successors, (516), 3 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:57:33,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:57:33,059 INFO L93 Difference]: Finished difference Result 162774 states and 174842 transitions. [2022-07-22 12:57:33,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:57:33,059 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 172.0) internal successors, (516), 3 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 744 [2022-07-22 12:57:33,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:57:33,161 INFO L225 Difference]: With dead ends: 162774 [2022-07-22 12:57:33,161 INFO L226 Difference]: Without dead ends: 87364 [2022-07-22 12:57:33,207 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 [2022-07-22 12:57:33,207 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 255 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 1186 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 1298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-22 12:57:33,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 191 Invalid, 1298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 1186 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-22 12:57:33,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87364 states. [2022-07-22 12:57:34,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87364 to 79676. [2022-07-22 12:57:34,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79676 states, 79675 states have (on average 1.0739253216190776) internal successors, (85565), 79675 states have internal predecessors, (85565), 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) [2022-07-22 12:57:34,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79676 states to 79676 states and 85565 transitions. [2022-07-22 12:57:34,314 INFO L78 Accepts]: Start accepts. Automaton has 79676 states and 85565 transitions. Word has length 744 [2022-07-22 12:57:34,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:57:34,314 INFO L495 AbstractCegarLoop]: Abstraction has 79676 states and 85565 transitions. [2022-07-22 12:57:34,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 172.0) internal successors, (516), 3 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:57:34,315 INFO L276 IsEmpty]: Start isEmpty. Operand 79676 states and 85565 transitions. [2022-07-22 12:57:34,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 763 [2022-07-22 12:57:34,349 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:57:34,349 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:57:34,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-22 12:57:34,350 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:57:34,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:57:34,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1939600823, now seen corresponding path program 1 times [2022-07-22 12:57:34,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:57:34,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785480811] [2022-07-22 12:57:34,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:57:34,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:57:34,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:57:34,556 INFO L134 CoverageAnalysis]: Checked inductivity of 1465 backedges. 1049 proven. 0 refuted. 0 times theorem prover too weak. 416 trivial. 0 not checked. [2022-07-22 12:57:34,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:57:34,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785480811] [2022-07-22 12:57:34,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785480811] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:57:34,557 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:57:34,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:57:34,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048499239] [2022-07-22 12:57:34,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:57:34,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:57:34,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:57:34,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:57:34,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:57:34,559 INFO L87 Difference]: Start difference. First operand 79676 states and 85565 transitions. Second operand has 3 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 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) [2022-07-22 12:57:36,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:57:36,339 INFO L93 Difference]: Finished difference Result 166604 states and 178965 transitions. [2022-07-22 12:57:36,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:57:36,340 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 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 762 [2022-07-22 12:57:36,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:57:36,433 INFO L225 Difference]: With dead ends: 166604 [2022-07-22 12:57:36,434 INFO L226 Difference]: Without dead ends: 86930 [2022-07-22 12:57:36,475 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 [2022-07-22 12:57:36,475 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 400 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 1133 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 1295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 1133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-22 12:57:36,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [400 Valid, 202 Invalid, 1295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 1133 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-22 12:57:36,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86930 states. [2022-07-22 12:57:37,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86930 to 83088. [2022-07-22 12:57:37,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83088 states, 83087 states have (on average 1.0727791351234248) internal successors, (89134), 83087 states have internal predecessors, (89134), 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) [2022-07-22 12:57:37,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83088 states to 83088 states and 89134 transitions. [2022-07-22 12:57:37,614 INFO L78 Accepts]: Start accepts. Automaton has 83088 states and 89134 transitions. Word has length 762 [2022-07-22 12:57:37,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:57:37,615 INFO L495 AbstractCegarLoop]: Abstraction has 83088 states and 89134 transitions. [2022-07-22 12:57:37,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 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) [2022-07-22 12:57:37,615 INFO L276 IsEmpty]: Start isEmpty. Operand 83088 states and 89134 transitions. [2022-07-22 12:57:37,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 771 [2022-07-22 12:57:37,647 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:57:37,647 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:57:37,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-22 12:57:37,647 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:57:37,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:57:37,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1858694103, now seen corresponding path program 1 times [2022-07-22 12:57:37,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:57:37,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876880311] [2022-07-22 12:57:37,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:57:37,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:57:37,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:57:37,818 INFO L134 CoverageAnalysis]: Checked inductivity of 1422 backedges. 1032 proven. 0 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2022-07-22 12:57:37,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:57:37,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876880311] [2022-07-22 12:57:37,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876880311] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:57:37,819 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:57:37,819 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:57:37,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972179876] [2022-07-22 12:57:37,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:57:37,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:57:37,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:57:37,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:57:37,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:57:37,821 INFO L87 Difference]: Start difference. First operand 83088 states and 89134 transitions. Second operand has 3 states, 3 states have (on average 155.0) internal successors, (465), 3 states have internal predecessors, (465), 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) [2022-07-22 12:57:39,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:57:39,798 INFO L93 Difference]: Finished difference Result 170009 states and 182272 transitions. [2022-07-22 12:57:39,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:57:39,798 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 155.0) internal successors, (465), 3 states have internal predecessors, (465), 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 770 [2022-07-22 12:57:39,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:57:39,892 INFO L225 Difference]: With dead ends: 170009 [2022-07-22 12:57:39,892 INFO L226 Difference]: Without dead ends: 86923 [2022-07-22 12:57:39,934 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 [2022-07-22 12:57:39,934 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 295 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 1083 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 1201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 1083 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-22 12:57:39,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [295 Valid, 235 Invalid, 1201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 1083 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-22 12:57:40,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86923 states. [2022-07-22 12:57:40,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86923 to 82663. [2022-07-22 12:57:40,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82663 states, 82662 states have (on average 1.0720766494882776) internal successors, (88620), 82662 states have internal predecessors, (88620), 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) [2022-07-22 12:57:40,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82663 states to 82663 states and 88620 transitions. [2022-07-22 12:57:40,959 INFO L78 Accepts]: Start accepts. Automaton has 82663 states and 88620 transitions. Word has length 770 [2022-07-22 12:57:40,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:57:40,960 INFO L495 AbstractCegarLoop]: Abstraction has 82663 states and 88620 transitions. [2022-07-22 12:57:40,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 155.0) internal successors, (465), 3 states have internal predecessors, (465), 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) [2022-07-22 12:57:40,960 INFO L276 IsEmpty]: Start isEmpty. Operand 82663 states and 88620 transitions. [2022-07-22 12:57:40,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 789 [2022-07-22 12:57:40,990 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:57:40,991 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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, 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, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:57:40,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-22 12:57:40,991 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:57:40,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:57:40,992 INFO L85 PathProgramCache]: Analyzing trace with hash 331354568, now seen corresponding path program 1 times [2022-07-22 12:57:40,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:57:40,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657222356] [2022-07-22 12:57:40,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:57:40,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:57:41,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:57:41,436 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 562 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-07-22 12:57:41,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:57:41,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657222356] [2022-07-22 12:57:41,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657222356] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:57:41,437 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:57:41,437 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:57:41,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704492785] [2022-07-22 12:57:41,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:57:41,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:57:41,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:57:41,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:57:41,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:57:41,439 INFO L87 Difference]: Start difference. First operand 82663 states and 88620 transitions. Second operand has 3 states, 3 states have (on average 233.66666666666666) internal successors, (701), 3 states have internal predecessors, (701), 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) [2022-07-22 12:57:43,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:57:43,226 INFO L93 Difference]: Finished difference Result 175557 states and 188049 transitions. [2022-07-22 12:57:43,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:57:43,233 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 233.66666666666666) internal successors, (701), 3 states have internal predecessors, (701), 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 788 [2022-07-22 12:57:43,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:57:43,519 INFO L225 Difference]: With dead ends: 175557 [2022-07-22 12:57:43,519 INFO L226 Difference]: Without dead ends: 92896 [2022-07-22 12:57:43,555 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 [2022-07-22 12:57:43,556 INFO L413 NwaCegarLoop]: 611 mSDtfsCounter, 58 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 1154 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 640 SdHoareTripleChecker+Invalid, 1288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 1154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-22 12:57:43,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 640 Invalid, 1288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 1154 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-22 12:57:43,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92896 states. [2022-07-22 12:57:44,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92896 to 87332. [2022-07-22 12:57:44,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87332 states, 87331 states have (on average 1.0706736439523192) internal successors, (93503), 87331 states have internal predecessors, (93503), 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) [2022-07-22 12:57:44,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87332 states to 87332 states and 93503 transitions. [2022-07-22 12:57:44,570 INFO L78 Accepts]: Start accepts. Automaton has 87332 states and 93503 transitions. Word has length 788 [2022-07-22 12:57:44,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:57:44,570 INFO L495 AbstractCegarLoop]: Abstraction has 87332 states and 93503 transitions. [2022-07-22 12:57:44,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 233.66666666666666) internal successors, (701), 3 states have internal predecessors, (701), 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) [2022-07-22 12:57:44,571 INFO L276 IsEmpty]: Start isEmpty. Operand 87332 states and 93503 transitions. [2022-07-22 12:57:44,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 812 [2022-07-22 12:57:44,613 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:57:44,613 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 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] [2022-07-22 12:57:44,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-22 12:57:44,613 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:57:44,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:57:44,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1759449441, now seen corresponding path program 1 times [2022-07-22 12:57:44,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:57:44,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190585053] [2022-07-22 12:57:44,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:57:44,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:57:44,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:57:44,853 INFO L134 CoverageAnalysis]: Checked inductivity of 1534 backedges. 639 proven. 73 refuted. 0 times theorem prover too weak. 822 trivial. 0 not checked. [2022-07-22 12:57:44,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:57:44,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190585053] [2022-07-22 12:57:44,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190585053] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 12:57:44,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700602626] [2022-07-22 12:57:44,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:57:44,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 12:57:44,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 12:57:44,855 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) [2022-07-22 12:57:44,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 12:57:45,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:57:45,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 1024 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-22 12:57:45,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 12:57:45,592 INFO L134 CoverageAnalysis]: Checked inductivity of 1534 backedges. 639 proven. 73 refuted. 0 times theorem prover too weak. 822 trivial. 0 not checked. [2022-07-22 12:57:45,592 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 12:57:45,792 INFO L134 CoverageAnalysis]: Checked inductivity of 1534 backedges. 712 proven. 0 refuted. 0 times theorem prover too weak. 822 trivial. 0 not checked. [2022-07-22 12:57:45,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [700602626] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-22 12:57:45,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-22 12:57:45,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2022-07-22 12:57:45,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893759860] [2022-07-22 12:57:45,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:57:45,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 12:57:45,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:57:45,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 12:57:45,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-07-22 12:57:45,795 INFO L87 Difference]: Start difference. First operand 87332 states and 93503 transitions. Second operand has 4 states, 4 states have (on average 92.0) internal successors, (368), 3 states have internal predecessors, (368), 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) [2022-07-22 12:57:48,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:57:48,580 INFO L93 Difference]: Finished difference Result 189581 states and 203267 transitions. [2022-07-22 12:57:48,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 12:57:48,580 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 92.0) internal successors, (368), 3 states have internal predecessors, (368), 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 811 [2022-07-22 12:57:48,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:57:48,686 INFO L225 Difference]: With dead ends: 189581 [2022-07-22 12:57:48,687 INFO L226 Difference]: Without dead ends: 102251 [2022-07-22 12:57:48,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1623 GetRequests, 1617 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-07-22 12:57:48,703 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 779 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 2165 mSolverCounterSat, 324 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 779 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 2489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 324 IncrementalHoareTripleChecker+Valid, 2165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-22 12:57:48,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [779 Valid, 148 Invalid, 2489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [324 Valid, 2165 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-22 12:57:48,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102251 states. [2022-07-22 12:57:49,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102251 to 99274. [2022-07-22 12:57:49,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99274 states, 99273 states have (on average 1.0730007151995005) internal successors, (106520), 99273 states have internal predecessors, (106520), 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) [2022-07-22 12:57:49,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99274 states to 99274 states and 106520 transitions. [2022-07-22 12:57:49,777 INFO L78 Accepts]: Start accepts. Automaton has 99274 states and 106520 transitions. Word has length 811 [2022-07-22 12:57:49,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:57:49,778 INFO L495 AbstractCegarLoop]: Abstraction has 99274 states and 106520 transitions. [2022-07-22 12:57:49,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 92.0) internal successors, (368), 3 states have internal predecessors, (368), 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) [2022-07-22 12:57:49,778 INFO L276 IsEmpty]: Start isEmpty. Operand 99274 states and 106520 transitions. [2022-07-22 12:57:49,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 910 [2022-07-22 12:57:49,818 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:57:49,818 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-22 12:57:49,838 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-22 12:57:50,021 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,SelfDestructingSolverStorable24 [2022-07-22 12:57:50,022 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:57:50,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:57:50,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1107197470, now seen corresponding path program 1 times [2022-07-22 12:57:50,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:57:50,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247838668] [2022-07-22 12:57:50,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:57:50,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:57:50,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:57:50,488 INFO L134 CoverageAnalysis]: Checked inductivity of 1940 backedges. 1464 proven. 0 refuted. 0 times theorem prover too weak. 476 trivial. 0 not checked. [2022-07-22 12:57:50,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:57:50,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247838668] [2022-07-22 12:57:50,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247838668] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:57:50,489 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:57:50,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 12:57:50,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794444579] [2022-07-22 12:57:50,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:57:50,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 12:57:50,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:57:50,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 12:57:50,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-22 12:57:50,491 INFO L87 Difference]: Start difference. First operand 99274 states and 106520 transitions. Second operand has 4 states, 4 states have (on average 131.75) internal successors, (527), 4 states have internal predecessors, (527), 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) [2022-07-22 12:57:53,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:57:53,049 INFO L93 Difference]: Finished difference Result 206668 states and 221493 transitions. [2022-07-22 12:57:53,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 12:57:53,049 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 131.75) internal successors, (527), 4 states have internal predecessors, (527), 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 909 [2022-07-22 12:57:53,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:57:53,376 INFO L225 Difference]: With dead ends: 206668 [2022-07-22 12:57:53,376 INFO L226 Difference]: Without dead ends: 107396 [2022-07-22 12:57:53,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-22 12:57:53,390 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 757 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 2200 mSolverCounterSat, 231 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 757 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 2431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 231 IncrementalHoareTripleChecker+Valid, 2200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-22 12:57:53,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [757 Valid, 216 Invalid, 2431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [231 Valid, 2200 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-22 12:57:53,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107396 states. [2022-07-22 12:57:54,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107396 to 94154. [2022-07-22 12:57:54,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94154 states, 94153 states have (on average 1.0697375548309667) internal successors, (100719), 94153 states have internal predecessors, (100719), 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) [2022-07-22 12:57:54,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94154 states to 94154 states and 100719 transitions. [2022-07-22 12:57:54,424 INFO L78 Accepts]: Start accepts. Automaton has 94154 states and 100719 transitions. Word has length 909 [2022-07-22 12:57:54,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:57:54,424 INFO L495 AbstractCegarLoop]: Abstraction has 94154 states and 100719 transitions. [2022-07-22 12:57:54,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 131.75) internal successors, (527), 4 states have internal predecessors, (527), 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) [2022-07-22 12:57:54,424 INFO L276 IsEmpty]: Start isEmpty. Operand 94154 states and 100719 transitions. [2022-07-22 12:57:54,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 916 [2022-07-22 12:57:54,457 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:57:54,457 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-22 12:57:54,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-22 12:57:54,457 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:57:54,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:57:54,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1016245605, now seen corresponding path program 1 times [2022-07-22 12:57:54,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:57:54,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341692826] [2022-07-22 12:57:54,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:57:54,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:57:54,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:57:54,665 INFO L134 CoverageAnalysis]: Checked inductivity of 1964 backedges. 1482 proven. 0 refuted. 0 times theorem prover too weak. 482 trivial. 0 not checked. [2022-07-22 12:57:54,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:57:54,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341692826] [2022-07-22 12:57:54,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341692826] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:57:54,666 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:57:54,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 12:57:54,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454153381] [2022-07-22 12:57:54,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:57:54,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 12:57:54,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:57:54,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 12:57:54,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-22 12:57:54,668 INFO L87 Difference]: Start difference. First operand 94154 states and 100719 transitions. Second operand has 4 states, 4 states have (on average 131.75) internal successors, (527), 4 states have internal predecessors, (527), 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) [2022-07-22 12:57:57,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:57:57,121 INFO L93 Difference]: Finished difference Result 198560 states and 212088 transitions. [2022-07-22 12:57:57,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 12:57:57,122 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 131.75) internal successors, (527), 4 states have internal predecessors, (527), 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 915 [2022-07-22 12:57:57,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:57:57,233 INFO L225 Difference]: With dead ends: 198560 [2022-07-22 12:57:57,233 INFO L226 Difference]: Without dead ends: 104408 [2022-07-22 12:57:57,282 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-22 12:57:57,283 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 755 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 2187 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 755 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 2367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 2187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-22 12:57:57,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [755 Valid, 216 Invalid, 2367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 2187 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-22 12:57:57,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104408 states.