./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/pals_lcr.5.ufo.BOUNDED-10.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded/pals_lcr.5.ufo.BOUNDED-10.pals.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 f7497e4203b86f15acb74ef94ae3bce6255aa8233294110bb99f24cde0725dc7 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 06:44:56,516 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 06:44:56,518 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 06:44:56,548 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 06:44:56,548 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 06:44:56,549 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 06:44:56,550 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 06:44:56,552 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 06:44:56,554 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 06:44:56,556 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 06:44:56,556 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 06:44:56,558 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 06:44:56,559 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 06:44:56,562 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 06:44:56,563 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 06:44:56,563 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 06:44:56,564 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 06:44:56,564 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 06:44:56,565 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 06:44:56,566 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 06:44:56,567 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 06:44:56,568 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 06:44:56,568 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 06:44:56,569 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 06:44:56,570 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 06:44:56,574 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 06:44:56,576 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 06:44:56,577 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 06:44:56,577 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 06:44:56,578 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 06:44:56,578 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 06:44:56,579 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 06:44:56,580 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 06:44:56,580 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 06:44:56,581 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 06:44:56,581 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 06:44:56,582 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 06:44:56,582 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 06:44:56,582 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 06:44:56,582 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 06:44:56,583 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 06:44:56,585 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 06:44:56,586 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 06:44:56,609 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 06:44:56,609 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 06:44:56,610 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 06:44:56,610 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 06:44:56,610 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 06:44:56,611 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 06:44:56,611 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 06:44:56,611 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 06:44:56,611 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 06:44:56,612 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 06:44:56,612 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 06:44:56,612 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 06:44:56,612 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 06:44:56,613 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 06:44:56,613 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 06:44:56,613 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 06:44:56,613 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 06:44:56,613 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 06:44:56,613 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 06:44:56,613 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 06:44:56,614 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 06:44:56,614 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 06:44:56,614 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 06:44:56,614 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 06:44:56,614 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 06:44:56,614 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 06:44:56,614 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 06:44:56,615 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 06:44:56,615 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 06:44:56,615 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 06:44:56,615 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 06:44:56,615 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 06:44:56,615 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 06:44:56,616 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f7497e4203b86f15acb74ef94ae3bce6255aa8233294110bb99f24cde0725dc7 [2022-07-12 06:44:56,806 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 06:44:56,821 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 06:44:56,824 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 06:44:56,824 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 06:44:56,825 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 06:44:56,826 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr.5.ufo.BOUNDED-10.pals.c [2022-07-12 06:44:56,888 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc9a2007b/727f1e7e49eb4ef2bb3f8aa6062d82b5/FLAG14549c90c [2022-07-12 06:44:57,291 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 06:44:57,292 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.5.ufo.BOUNDED-10.pals.c [2022-07-12 06:44:57,299 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc9a2007b/727f1e7e49eb4ef2bb3f8aa6062d82b5/FLAG14549c90c [2022-07-12 06:44:57,309 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc9a2007b/727f1e7e49eb4ef2bb3f8aa6062d82b5 [2022-07-12 06:44:57,311 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 06:44:57,312 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 06:44:57,313 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 06:44:57,313 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 06:44:57,315 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 06:44:57,316 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 06:44:57" (1/1) ... [2022-07-12 06:44:57,317 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b56c71c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:44:57, skipping insertion in model container [2022-07-12 06:44:57,317 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 06:44:57" (1/1) ... [2022-07-12 06:44:57,324 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 06:44:57,344 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 06:44:57,507 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.5.ufo.BOUNDED-10.pals.c[11233,11246] [2022-07-12 06:44:57,509 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 06:44:57,515 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 06:44:57,543 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.5.ufo.BOUNDED-10.pals.c[11233,11246] [2022-07-12 06:44:57,544 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 06:44:57,553 INFO L208 MainTranslator]: Completed translation [2022-07-12 06:44:57,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:44:57 WrapperNode [2022-07-12 06:44:57,554 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 06:44:57,555 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 06:44:57,555 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 06:44:57,555 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 06:44:57,560 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:44:57" (1/1) ... [2022-07-12 06:44:57,566 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:44:57" (1/1) ... [2022-07-12 06:44:57,586 INFO L137 Inliner]: procedures = 24, calls = 16, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 333 [2022-07-12 06:44:57,587 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 06:44:57,588 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 06:44:57,588 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 06:44:57,588 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 06:44:57,593 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:44:57" (1/1) ... [2022-07-12 06:44:57,593 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:44:57" (1/1) ... [2022-07-12 06:44:57,596 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:44:57" (1/1) ... [2022-07-12 06:44:57,596 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:44:57" (1/1) ... [2022-07-12 06:44:57,600 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:44:57" (1/1) ... [2022-07-12 06:44:57,603 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:44:57" (1/1) ... [2022-07-12 06:44:57,605 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:44:57" (1/1) ... [2022-07-12 06:44:57,607 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 06:44:57,608 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 06:44:57,608 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 06:44:57,608 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 06:44:57,609 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:44:57" (1/1) ... [2022-07-12 06:44:57,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 06:44:57,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 06:44:57,665 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 06:44:57,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 06:44:57,699 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 06:44:57,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 06:44:57,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 06:44:57,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 06:44:57,775 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 06:44:57,781 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 06:44:58,054 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 06:44:58,060 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 06:44:58,060 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-12 06:44:58,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 06:44:58 BoogieIcfgContainer [2022-07-12 06:44:58,062 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 06:44:58,063 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 06:44:58,063 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 06:44:58,085 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 06:44:58,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 06:44:57" (1/3) ... [2022-07-12 06:44:58,086 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19514b98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 06:44:58, skipping insertion in model container [2022-07-12 06:44:58,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:44:57" (2/3) ... [2022-07-12 06:44:58,086 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19514b98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 06:44:58, skipping insertion in model container [2022-07-12 06:44:58,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 06:44:58" (3/3) ... [2022-07-12 06:44:58,087 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.ufo.BOUNDED-10.pals.c [2022-07-12 06:44:58,097 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 06:44:58,103 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 06:44:58,140 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 06:44:58,145 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@53d2e719, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7fd735d2 [2022-07-12 06:44:58,145 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 06:44:58,148 INFO L276 IsEmpty]: Start isEmpty. Operand has 93 states, 91 states have (on average 1.7252747252747254) internal successors, (157), 92 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:44:58,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-07-12 06:44:58,154 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:44:58,154 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:44:58,155 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:44:58,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:44:58,158 INFO L85 PathProgramCache]: Analyzing trace with hash 8392247, now seen corresponding path program 1 times [2022-07-12 06:44:58,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:44:58,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277440396] [2022-07-12 06:44:58,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:44:58,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:44:58,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:44:58,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:44:58,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:44:58,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277440396] [2022-07-12 06:44:58,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277440396] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:44:58,313 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:44:58,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 06:44:58,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437469211] [2022-07-12 06:44:58,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:44:58,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-12 06:44:58,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:44:58,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-12 06:44:58,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 06:44:58,344 INFO L87 Difference]: Start difference. First operand has 93 states, 91 states have (on average 1.7252747252747254) internal successors, (157), 92 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:44:58,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:44:58,369 INFO L93 Difference]: Finished difference Result 150 states and 246 transitions. [2022-07-12 06:44:58,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-12 06:44:58,371 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-07-12 06:44:58,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:44:58,378 INFO L225 Difference]: With dead ends: 150 [2022-07-12 06:44:58,378 INFO L226 Difference]: Without dead ends: 89 [2022-07-12 06:44:58,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 06:44:58,384 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:44:58,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:44:58,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-07-12 06:44:58,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2022-07-12 06:44:58,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 1.7045454545454546) internal successors, (150), 88 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:44:58,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 150 transitions. [2022-07-12 06:44:58,409 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 150 transitions. Word has length 33 [2022-07-12 06:44:58,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:44:58,409 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 150 transitions. [2022-07-12 06:44:58,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:44:58,410 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 150 transitions. [2022-07-12 06:44:58,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-07-12 06:44:58,411 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:44:58,411 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:44:58,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 06:44:58,411 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:44:58,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:44:58,412 INFO L85 PathProgramCache]: Analyzing trace with hash -501080843, now seen corresponding path program 1 times [2022-07-12 06:44:58,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:44:58,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714170568] [2022-07-12 06:44:58,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:44:58,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:44:58,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:44:58,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:44:58,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:44:58,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714170568] [2022-07-12 06:44:58,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714170568] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:44:58,521 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:44:58,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 06:44:58,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610729386] [2022-07-12 06:44:58,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:44:58,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 06:44:58,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:44:58,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 06:44:58,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:44:58,525 INFO L87 Difference]: Start difference. First operand 89 states and 150 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:44:58,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:44:58,611 INFO L93 Difference]: Finished difference Result 145 states and 236 transitions. [2022-07-12 06:44:58,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 06:44:58,612 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-07-12 06:44:58,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:44:58,613 INFO L225 Difference]: With dead ends: 145 [2022-07-12 06:44:58,613 INFO L226 Difference]: Without dead ends: 89 [2022-07-12 06:44:58,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:44:58,617 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 3 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:44:58,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 558 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:44:58,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-07-12 06:44:58,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2022-07-12 06:44:58,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 1.3522727272727273) internal successors, (119), 88 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:44:58,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 119 transitions. [2022-07-12 06:44:58,627 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 119 transitions. Word has length 33 [2022-07-12 06:44:58,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:44:58,627 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 119 transitions. [2022-07-12 06:44:58,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:44:58,628 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 119 transitions. [2022-07-12 06:44:58,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-12 06:44:58,631 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:44:58,631 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:44:58,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 06:44:58,632 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:44:58,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:44:58,634 INFO L85 PathProgramCache]: Analyzing trace with hash 988628396, now seen corresponding path program 1 times [2022-07-12 06:44:58,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:44:58,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364519951] [2022-07-12 06:44:58,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:44:58,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:44:58,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:44:58,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:44:58,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:44:58,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364519951] [2022-07-12 06:44:58,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364519951] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:44:58,707 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:44:58,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 06:44:58,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617739850] [2022-07-12 06:44:58,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:44:58,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 06:44:58,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:44:58,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 06:44:58,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:44:58,709 INFO L87 Difference]: Start difference. First operand 89 states and 119 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:44:58,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:44:58,724 INFO L93 Difference]: Finished difference Result 187 states and 273 transitions. [2022-07-12 06:44:58,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 06:44:58,724 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-07-12 06:44:58,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:44:58,725 INFO L225 Difference]: With dead ends: 187 [2022-07-12 06:44:58,725 INFO L226 Difference]: Without dead ends: 135 [2022-07-12 06:44:58,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:44:58,727 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 72 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:44:58,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 267 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:44:58,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2022-07-12 06:44:58,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 133. [2022-07-12 06:44:58,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 132 states have (on average 1.4318181818181819) internal successors, (189), 132 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:44:58,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 189 transitions. [2022-07-12 06:44:58,736 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 189 transitions. Word has length 63 [2022-07-12 06:44:58,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:44:58,736 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 189 transitions. [2022-07-12 06:44:58,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:44:58,736 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 189 transitions. [2022-07-12 06:44:58,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-12 06:44:58,737 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:44:58,738 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:44:58,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 06:44:58,738 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:44:58,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:44:58,738 INFO L85 PathProgramCache]: Analyzing trace with hash 243045666, now seen corresponding path program 1 times [2022-07-12 06:44:58,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:44:58,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647561552] [2022-07-12 06:44:58,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:44:58,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:44:58,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:44:58,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:44:58,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:44:58,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647561552] [2022-07-12 06:44:58,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647561552] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:44:58,810 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:44:58,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 06:44:58,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2664576] [2022-07-12 06:44:58,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:44:58,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 06:44:58,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:44:58,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 06:44:58,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:44:58,813 INFO L87 Difference]: Start difference. First operand 133 states and 189 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:44:58,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:44:58,844 INFO L93 Difference]: Finished difference Result 313 states and 473 transitions. [2022-07-12 06:44:58,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 06:44:58,853 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-07-12 06:44:58,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:44:58,857 INFO L225 Difference]: With dead ends: 313 [2022-07-12 06:44:58,857 INFO L226 Difference]: Without dead ends: 217 [2022-07-12 06:44:58,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:44:58,859 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 68 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:44:58,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 266 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:44:58,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2022-07-12 06:44:58,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 215. [2022-07-12 06:44:58,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 214 states have (on average 1.485981308411215) internal successors, (318), 214 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:44:58,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 318 transitions. [2022-07-12 06:44:58,888 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 318 transitions. Word has length 63 [2022-07-12 06:44:58,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:44:58,889 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 318 transitions. [2022-07-12 06:44:58,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:44:58,890 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 318 transitions. [2022-07-12 06:44:58,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-12 06:44:58,891 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:44:58,891 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:44:58,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 06:44:58,891 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:44:58,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:44:58,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1696985192, now seen corresponding path program 1 times [2022-07-12 06:44:58,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:44:58,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791004156] [2022-07-12 06:44:58,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:44:58,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:44:58,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:44:58,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:44:58,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:44:58,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791004156] [2022-07-12 06:44:58,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791004156] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:44:58,981 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:44:58,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 06:44:58,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596456224] [2022-07-12 06:44:58,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:44:58,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 06:44:58,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:44:58,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 06:44:58,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:44:58,983 INFO L87 Difference]: Start difference. First operand 215 states and 318 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:44:59,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:44:59,009 INFO L93 Difference]: Finished difference Result 547 states and 840 transitions. [2022-07-12 06:44:59,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 06:44:59,010 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-07-12 06:44:59,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:44:59,012 INFO L225 Difference]: With dead ends: 547 [2022-07-12 06:44:59,012 INFO L226 Difference]: Without dead ends: 369 [2022-07-12 06:44:59,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:44:59,017 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 64 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:44:59,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 265 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:44:59,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2022-07-12 06:44:59,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 367. [2022-07-12 06:44:59,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 366 states have (on average 1.5136612021857923) internal successors, (554), 366 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:44:59,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 554 transitions. [2022-07-12 06:44:59,053 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 554 transitions. Word has length 63 [2022-07-12 06:44:59,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:44:59,054 INFO L495 AbstractCegarLoop]: Abstraction has 367 states and 554 transitions. [2022-07-12 06:44:59,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:44:59,057 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 554 transitions. [2022-07-12 06:44:59,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-12 06:44:59,058 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:44:59,059 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:44:59,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 06:44:59,059 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:44:59,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:44:59,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1003697422, now seen corresponding path program 1 times [2022-07-12 06:44:59,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:44:59,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296142697] [2022-07-12 06:44:59,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:44:59,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:44:59,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:44:59,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:44:59,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:44:59,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296142697] [2022-07-12 06:44:59,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296142697] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:44:59,134 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:44:59,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 06:44:59,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908069227] [2022-07-12 06:44:59,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:44:59,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 06:44:59,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:44:59,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 06:44:59,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:44:59,136 INFO L87 Difference]: Start difference. First operand 367 states and 554 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:44:59,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:44:59,162 INFO L93 Difference]: Finished difference Result 979 states and 1508 transitions. [2022-07-12 06:44:59,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 06:44:59,163 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-07-12 06:44:59,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:44:59,167 INFO L225 Difference]: With dead ends: 979 [2022-07-12 06:44:59,167 INFO L226 Difference]: Without dead ends: 649 [2022-07-12 06:44:59,168 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:44:59,169 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 60 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:44:59,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 264 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:44:59,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2022-07-12 06:44:59,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 647. [2022-07-12 06:44:59,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 646 states have (on average 1.520123839009288) internal successors, (982), 646 states have internal predecessors, (982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:44:59,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 982 transitions. [2022-07-12 06:44:59,208 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 982 transitions. Word has length 63 [2022-07-12 06:44:59,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:44:59,208 INFO L495 AbstractCegarLoop]: Abstraction has 647 states and 982 transitions. [2022-07-12 06:44:59,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:44:59,208 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 982 transitions. [2022-07-12 06:44:59,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-12 06:44:59,211 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:44:59,211 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:44:59,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 06:44:59,211 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:44:59,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:44:59,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1341490564, now seen corresponding path program 1 times [2022-07-12 06:44:59,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:44:59,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583659252] [2022-07-12 06:44:59,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:44:59,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:44:59,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:44:59,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:44:59,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:44:59,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583659252] [2022-07-12 06:44:59,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583659252] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:44:59,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:44:59,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 06:44:59,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553557823] [2022-07-12 06:44:59,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:44:59,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 06:44:59,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:44:59,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 06:44:59,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:44:59,280 INFO L87 Difference]: Start difference. First operand 647 states and 982 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:44:59,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:44:59,317 INFO L93 Difference]: Finished difference Result 1771 states and 2712 transitions. [2022-07-12 06:44:59,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 06:44:59,318 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-07-12 06:44:59,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:44:59,322 INFO L225 Difference]: With dead ends: 1771 [2022-07-12 06:44:59,322 INFO L226 Difference]: Without dead ends: 1161 [2022-07-12 06:44:59,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:44:59,324 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 56 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:44:59,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 263 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:44:59,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1161 states. [2022-07-12 06:44:59,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1161 to 1159. [2022-07-12 06:44:59,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1159 states, 1158 states have (on average 1.5112262521588946) internal successors, (1750), 1158 states have internal predecessors, (1750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:44:59,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1159 states to 1159 states and 1750 transitions. [2022-07-12 06:44:59,367 INFO L78 Accepts]: Start accepts. Automaton has 1159 states and 1750 transitions. Word has length 63 [2022-07-12 06:44:59,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:44:59,367 INFO L495 AbstractCegarLoop]: Abstraction has 1159 states and 1750 transitions. [2022-07-12 06:44:59,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:44:59,367 INFO L276 IsEmpty]: Start isEmpty. Operand 1159 states and 1750 transitions. [2022-07-12 06:44:59,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-12 06:44:59,369 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:44:59,369 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:44:59,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 06:44:59,369 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:44:59,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:44:59,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1735491334, now seen corresponding path program 1 times [2022-07-12 06:44:59,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:44:59,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004874159] [2022-07-12 06:44:59,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:44:59,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:44:59,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:44:59,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:44:59,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:44:59,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004874159] [2022-07-12 06:44:59,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004874159] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:44:59,450 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:44:59,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 06:44:59,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593692933] [2022-07-12 06:44:59,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:44:59,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 06:44:59,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:44:59,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 06:44:59,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:44:59,451 INFO L87 Difference]: Start difference. First operand 1159 states and 1750 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:44:59,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:44:59,957 INFO L93 Difference]: Finished difference Result 12379 states and 18880 transitions. [2022-07-12 06:44:59,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 06:44:59,958 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-07-12 06:44:59,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:44:59,986 INFO L225 Difference]: With dead ends: 12379 [2022-07-12 06:44:59,986 INFO L226 Difference]: Without dead ends: 11257 [2022-07-12 06:44:59,990 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-07-12 06:44:59,990 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 1317 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1317 SdHoareTripleChecker+Valid, 953 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 06:44:59,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1317 Valid, 953 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 06:44:59,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11257 states. [2022-07-12 06:45:00,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11257 to 2279. [2022-07-12 06:45:00,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2279 states, 2278 states have (on average 1.491659350307287) internal successors, (3398), 2278 states have internal predecessors, (3398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:45:00,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2279 states to 2279 states and 3398 transitions. [2022-07-12 06:45:00,214 INFO L78 Accepts]: Start accepts. Automaton has 2279 states and 3398 transitions. Word has length 63 [2022-07-12 06:45:00,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:45:00,215 INFO L495 AbstractCegarLoop]: Abstraction has 2279 states and 3398 transitions. [2022-07-12 06:45:00,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:45:00,216 INFO L276 IsEmpty]: Start isEmpty. Operand 2279 states and 3398 transitions. [2022-07-12 06:45:00,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-12 06:45:00,216 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:45:00,216 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:45:00,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 06:45:00,217 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:45:00,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:45:00,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1519410410, now seen corresponding path program 1 times [2022-07-12 06:45:00,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:45:00,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921539782] [2022-07-12 06:45:00,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:45:00,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:45:00,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:45:00,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:45:00,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:45:00,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921539782] [2022-07-12 06:45:00,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921539782] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:45:00,271 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:45:00,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 06:45:00,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29038356] [2022-07-12 06:45:00,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:45:00,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 06:45:00,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:45:00,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 06:45:00,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:45:00,273 INFO L87 Difference]: Start difference. First operand 2279 states and 3398 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:45:00,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:45:00,429 INFO L93 Difference]: Finished difference Result 5565 states and 8314 transitions. [2022-07-12 06:45:00,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 06:45:00,430 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-07-12 06:45:00,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:45:00,439 INFO L225 Difference]: With dead ends: 5565 [2022-07-12 06:45:00,439 INFO L226 Difference]: Without dead ends: 3323 [2022-07-12 06:45:00,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:45:00,444 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 48 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:45:00,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 226 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:45:00,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3323 states. [2022-07-12 06:45:00,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3323 to 3321. [2022-07-12 06:45:00,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3321 states, 3320 states have (on average 1.4771084337349398) internal successors, (4904), 3320 states have internal predecessors, (4904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:45:00,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3321 states to 3321 states and 4904 transitions. [2022-07-12 06:45:00,620 INFO L78 Accepts]: Start accepts. Automaton has 3321 states and 4904 transitions. Word has length 65 [2022-07-12 06:45:00,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:45:00,620 INFO L495 AbstractCegarLoop]: Abstraction has 3321 states and 4904 transitions. [2022-07-12 06:45:00,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:45:00,620 INFO L276 IsEmpty]: Start isEmpty. Operand 3321 states and 4904 transitions. [2022-07-12 06:45:00,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-12 06:45:00,621 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:45:00,621 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:45:00,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 06:45:00,621 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:45:00,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:45:00,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1585903922, now seen corresponding path program 1 times [2022-07-12 06:45:00,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:45:00,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286454929] [2022-07-12 06:45:00,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:45:00,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:45:00,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:45:00,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:45:00,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:45:00,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286454929] [2022-07-12 06:45:00,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286454929] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:45:00,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:45:00,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 06:45:00,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241233821] [2022-07-12 06:45:00,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:45:00,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 06:45:00,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:45:00,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 06:45:00,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:45:00,756 INFO L87 Difference]: Start difference. First operand 3321 states and 4904 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:45:01,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:45:01,059 INFO L93 Difference]: Finished difference Result 6605 states and 9770 transitions. [2022-07-12 06:45:01,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 06:45:01,060 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-07-12 06:45:01,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:45:01,068 INFO L225 Difference]: With dead ends: 6605 [2022-07-12 06:45:01,068 INFO L226 Difference]: Without dead ends: 3323 [2022-07-12 06:45:01,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-07-12 06:45:01,072 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 337 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 06:45:01,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [337 Valid, 425 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 06:45:01,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3323 states. [2022-07-12 06:45:01,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3323 to 3321. [2022-07-12 06:45:01,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3321 states, 3320 states have (on average 1.4626506024096386) internal successors, (4856), 3320 states have internal predecessors, (4856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:45:01,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3321 states to 3321 states and 4856 transitions. [2022-07-12 06:45:01,265 INFO L78 Accepts]: Start accepts. Automaton has 3321 states and 4856 transitions. Word has length 65 [2022-07-12 06:45:01,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:45:01,265 INFO L495 AbstractCegarLoop]: Abstraction has 3321 states and 4856 transitions. [2022-07-12 06:45:01,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:45:01,266 INFO L276 IsEmpty]: Start isEmpty. Operand 3321 states and 4856 transitions. [2022-07-12 06:45:01,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-12 06:45:01,266 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:45:01,266 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:45:01,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 06:45:01,267 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:45:01,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:45:01,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1503658279, now seen corresponding path program 1 times [2022-07-12 06:45:01,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:45:01,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319884014] [2022-07-12 06:45:01,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:45:01,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:45:01,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:45:01,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:45:01,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:45:01,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319884014] [2022-07-12 06:45:01,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319884014] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:45:01,355 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:45:01,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 06:45:01,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918877996] [2022-07-12 06:45:01,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:45:01,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 06:45:01,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:45:01,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 06:45:01,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 06:45:01,356 INFO L87 Difference]: Start difference. First operand 3321 states and 4856 transitions. Second operand has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:45:01,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:45:01,741 INFO L93 Difference]: Finished difference Result 6164 states and 8906 transitions. [2022-07-12 06:45:01,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 06:45:01,741 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2022-07-12 06:45:01,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:45:01,757 INFO L225 Difference]: With dead ends: 6164 [2022-07-12 06:45:01,757 INFO L226 Difference]: Without dead ends: 6162 [2022-07-12 06:45:01,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-07-12 06:45:01,759 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 628 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 628 SdHoareTripleChecker+Valid, 580 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:45:01,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [628 Valid, 580 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:45:01,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6162 states. [2022-07-12 06:45:01,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6162 to 3513. [2022-07-12 06:45:01,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3513 states, 3512 states have (on average 1.4328018223234624) internal successors, (5032), 3512 states have internal predecessors, (5032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:45:01,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3513 states to 3513 states and 5032 transitions. [2022-07-12 06:45:01,991 INFO L78 Accepts]: Start accepts. Automaton has 3513 states and 5032 transitions. Word has length 66 [2022-07-12 06:45:01,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:45:01,991 INFO L495 AbstractCegarLoop]: Abstraction has 3513 states and 5032 transitions. [2022-07-12 06:45:01,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:45:01,991 INFO L276 IsEmpty]: Start isEmpty. Operand 3513 states and 5032 transitions. [2022-07-12 06:45:01,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-07-12 06:45:01,993 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:45:01,993 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:45:01,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 06:45:01,993 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:45:01,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:45:01,994 INFO L85 PathProgramCache]: Analyzing trace with hash 550206538, now seen corresponding path program 1 times [2022-07-12 06:45:01,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:45:01,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68242082] [2022-07-12 06:45:01,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:45:01,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:45:02,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:45:02,065 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-12 06:45:02,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:45:02,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68242082] [2022-07-12 06:45:02,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68242082] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:45:02,065 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:45:02,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 06:45:02,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430199678] [2022-07-12 06:45:02,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:45:02,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 06:45:02,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:45:02,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 06:45:02,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:45:02,066 INFO L87 Difference]: Start difference. First operand 3513 states and 5032 transitions. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:45:03,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:45:03,104 INFO L93 Difference]: Finished difference Result 21589 states and 30958 transitions. [2022-07-12 06:45:03,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 06:45:03,105 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 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 94 [2022-07-12 06:45:03,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:45:03,136 INFO L225 Difference]: With dead ends: 21589 [2022-07-12 06:45:03,136 INFO L226 Difference]: Without dead ends: 18115 [2022-07-12 06:45:03,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-12 06:45:03,144 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 843 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 843 SdHoareTripleChecker+Valid, 673 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 06:45:03,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [843 Valid, 673 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 06:45:03,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18115 states. [2022-07-12 06:45:03,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18115 to 6985. [2022-07-12 06:45:03,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6985 states, 6984 states have (on average 1.4284077892325315) internal successors, (9976), 6984 states have internal predecessors, (9976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:45:03,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6985 states to 6985 states and 9976 transitions. [2022-07-12 06:45:03,622 INFO L78 Accepts]: Start accepts. Automaton has 6985 states and 9976 transitions. Word has length 94 [2022-07-12 06:45:03,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:45:03,622 INFO L495 AbstractCegarLoop]: Abstraction has 6985 states and 9976 transitions. [2022-07-12 06:45:03,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:45:03,623 INFO L276 IsEmpty]: Start isEmpty. Operand 6985 states and 9976 transitions. [2022-07-12 06:45:03,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-07-12 06:45:03,624 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:45:03,625 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:45:03,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-12 06:45:03,625 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:45:03,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:45:03,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1218576278, now seen corresponding path program 1 times [2022-07-12 06:45:03,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:45:03,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866246914] [2022-07-12 06:45:03,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:45:03,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:45:03,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:45:03,676 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-12 06:45:03,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:45:03,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866246914] [2022-07-12 06:45:03,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866246914] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:45:03,677 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:45:03,677 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 06:45:03,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767560673] [2022-07-12 06:45:03,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:45:03,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 06:45:03,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:45:03,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 06:45:03,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:45:03,678 INFO L87 Difference]: Start difference. First operand 6985 states and 9976 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:45:04,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:45:04,916 INFO L93 Difference]: Finished difference Result 25061 states and 35902 transitions. [2022-07-12 06:45:04,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 06:45:04,917 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 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 94 [2022-07-12 06:45:04,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:45:04,950 INFO L225 Difference]: With dead ends: 25061 [2022-07-12 06:45:04,950 INFO L226 Difference]: Without dead ends: 21587 [2022-07-12 06:45:04,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-12 06:45:04,960 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 739 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 739 SdHoareTripleChecker+Valid, 738 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 06:45:04,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [739 Valid, 738 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 06:45:04,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21587 states. [2022-07-12 06:45:05,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21587 to 12201. [2022-07-12 06:45:05,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12201 states, 12200 states have (on average 1.422295081967213) internal successors, (17352), 12200 states have internal predecessors, (17352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:45:05,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12201 states to 12201 states and 17352 transitions. [2022-07-12 06:45:05,706 INFO L78 Accepts]: Start accepts. Automaton has 12201 states and 17352 transitions. Word has length 94 [2022-07-12 06:45:05,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:45:05,706 INFO L495 AbstractCegarLoop]: Abstraction has 12201 states and 17352 transitions. [2022-07-12 06:45:05,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:45:05,707 INFO L276 IsEmpty]: Start isEmpty. Operand 12201 states and 17352 transitions. [2022-07-12 06:45:05,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-07-12 06:45:05,710 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:45:05,710 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:45:05,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-12 06:45:05,711 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:45:05,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:45:05,711 INFO L85 PathProgramCache]: Analyzing trace with hash -86936438, now seen corresponding path program 1 times [2022-07-12 06:45:05,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:45:05,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199572934] [2022-07-12 06:45:05,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:45:05,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:45:05,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:45:05,762 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-12 06:45:05,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:45:05,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199572934] [2022-07-12 06:45:05,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199572934] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:45:05,762 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:45:05,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 06:45:05,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12595069] [2022-07-12 06:45:05,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:45:05,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 06:45:05,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:45:05,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 06:45:05,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:45:05,764 INFO L87 Difference]: Start difference. First operand 12201 states and 17352 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:45:07,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:45:07,075 INFO L93 Difference]: Finished difference Result 28533 states and 40846 transitions. [2022-07-12 06:45:07,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 06:45:07,076 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 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 94 [2022-07-12 06:45:07,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:45:07,119 INFO L225 Difference]: With dead ends: 28533 [2022-07-12 06:45:07,119 INFO L226 Difference]: Without dead ends: 25059 [2022-07-12 06:45:07,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-12 06:45:07,130 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 756 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 756 SdHoareTripleChecker+Valid, 750 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 06:45:07,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [756 Valid, 750 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 06:45:07,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25059 states. [2022-07-12 06:45:08,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25059 to 15673. [2022-07-12 06:45:08,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15673 states, 15672 states have (on average 1.4226646248085757) internal successors, (22296), 15672 states have internal predecessors, (22296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:45:08,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15673 states to 15673 states and 22296 transitions. [2022-07-12 06:45:08,372 INFO L78 Accepts]: Start accepts. Automaton has 15673 states and 22296 transitions. Word has length 94 [2022-07-12 06:45:08,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:45:08,372 INFO L495 AbstractCegarLoop]: Abstraction has 15673 states and 22296 transitions. [2022-07-12 06:45:08,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:45:08,372 INFO L276 IsEmpty]: Start isEmpty. Operand 15673 states and 22296 transitions. [2022-07-12 06:45:08,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-07-12 06:45:08,376 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:45:08,376 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:45:08,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-12 06:45:08,376 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:45:08,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:45:08,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1322395478, now seen corresponding path program 1 times [2022-07-12 06:45:08,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:45:08,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714794376] [2022-07-12 06:45:08,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:45:08,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:45:08,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:45:08,432 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-12 06:45:08,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:45:08,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714794376] [2022-07-12 06:45:08,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714794376] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:45:08,433 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:45:08,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 06:45:08,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36800576] [2022-07-12 06:45:08,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:45:08,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 06:45:08,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:45:08,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 06:45:08,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:45:08,435 INFO L87 Difference]: Start difference. First operand 15673 states and 22296 transitions. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:45:10,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:45:10,358 INFO L93 Difference]: Finished difference Result 32005 states and 45790 transitions. [2022-07-12 06:45:10,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 06:45:10,358 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 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 94 [2022-07-12 06:45:10,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:45:10,397 INFO L225 Difference]: With dead ends: 32005 [2022-07-12 06:45:10,397 INFO L226 Difference]: Without dead ends: 28531 [2022-07-12 06:45:10,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-12 06:45:10,408 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 826 mSDsluCounter, 563 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 755 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 06:45:10,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [826 Valid, 755 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 06:45:10,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28531 states. [2022-07-12 06:45:11,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28531 to 19145. [2022-07-12 06:45:11,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19145 states, 19144 states have (on average 1.42290012536565) internal successors, (27240), 19144 states have internal predecessors, (27240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:45:11,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19145 states to 19145 states and 27240 transitions. [2022-07-12 06:45:11,694 INFO L78 Accepts]: Start accepts. Automaton has 19145 states and 27240 transitions. Word has length 94 [2022-07-12 06:45:11,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:45:11,695 INFO L495 AbstractCegarLoop]: Abstraction has 19145 states and 27240 transitions. [2022-07-12 06:45:11,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:45:11,695 INFO L276 IsEmpty]: Start isEmpty. Operand 19145 states and 27240 transitions. [2022-07-12 06:45:11,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-07-12 06:45:11,699 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:45:11,699 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:45:11,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-12 06:45:11,699 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:45:11,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:45:11,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1551576266, now seen corresponding path program 1 times [2022-07-12 06:45:11,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:45:11,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676425683] [2022-07-12 06:45:11,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:45:11,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:45:11,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:45:11,746 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 06:45:11,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:45:11,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676425683] [2022-07-12 06:45:11,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676425683] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:45:11,746 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:45:11,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 06:45:11,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871781814] [2022-07-12 06:45:11,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:45:11,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 06:45:11,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:45:11,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 06:45:11,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:45:11,748 INFO L87 Difference]: Start difference. First operand 19145 states and 27240 transitions. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:45:14,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:45:14,326 INFO L93 Difference]: Finished difference Result 33397 states and 47790 transitions. [2022-07-12 06:45:14,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 06:45:14,327 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2022-07-12 06:45:14,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:45:14,359 INFO L225 Difference]: With dead ends: 33397 [2022-07-12 06:45:14,360 INFO L226 Difference]: Without dead ends: 30963 [2022-07-12 06:45:14,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-12 06:45:14,366 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 823 mSDsluCounter, 509 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 823 SdHoareTripleChecker+Valid, 698 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:45:14,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [823 Valid, 698 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:45:14,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30963 states. [2022-07-12 06:45:15,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30963 to 21577. [2022-07-12 06:45:15,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21577 states, 21576 states have (on average 1.4241750092695589) internal successors, (30728), 21576 states have internal predecessors, (30728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:45:16,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21577 states to 21577 states and 30728 transitions. [2022-07-12 06:45:16,034 INFO L78 Accepts]: Start accepts. Automaton has 21577 states and 30728 transitions. Word has length 94 [2022-07-12 06:45:16,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:45:16,034 INFO L495 AbstractCegarLoop]: Abstraction has 21577 states and 30728 transitions. [2022-07-12 06:45:16,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:45:16,034 INFO L276 IsEmpty]: Start isEmpty. Operand 21577 states and 30728 transitions. [2022-07-12 06:45:16,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-07-12 06:45:16,038 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:45:16,038 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-12 06:45:16,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-12 06:45:16,039 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:45:16,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:45:16,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1418973216, now seen corresponding path program 1 times [2022-07-12 06:45:16,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:45:16,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829896739] [2022-07-12 06:45:16,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:45:16,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:45:16,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:45:16,246 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:45:16,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:45:16,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829896739] [2022-07-12 06:45:16,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829896739] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 06:45:16,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309228271] [2022-07-12 06:45:16,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:45:16,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:45:16,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 06:45:16,249 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 06:45:16,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 06:45:16,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:45:16,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-12 06:45:16,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 06:45:16,549 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 06:45:16,549 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 06:45:16,849 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 06:45:16,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1309228271] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 06:45:16,850 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 06:45:16,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 6, 4] total 20 [2022-07-12 06:45:16,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503435929] [2022-07-12 06:45:16,850 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 06:45:16,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-12 06:45:16,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:45:16,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-12 06:45:16,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2022-07-12 06:45:16,852 INFO L87 Difference]: Start difference. First operand 21577 states and 30728 transitions. Second operand has 20 states, 20 states have (on average 13.45) internal successors, (269), 20 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:45:43,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:45:43,076 INFO L93 Difference]: Finished difference Result 255672 states and 363266 transitions. [2022-07-12 06:45:43,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2022-07-12 06:45:43,077 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 13.45) internal successors, (269), 20 states have internal predecessors, (269), 0 states have call successors, (0), 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 95 [2022-07-12 06:45:43,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:45:43,790 INFO L225 Difference]: With dead ends: 255672 [2022-07-12 06:45:43,791 INFO L226 Difference]: Without dead ends: 234134 [2022-07-12 06:45:43,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 180 SyntacticMatches, 4 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10622 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=4277, Invalid=20529, Unknown=0, NotChecked=0, Total=24806 [2022-07-12 06:45:43,936 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 3930 mSDsluCounter, 2254 mSDsCounter, 0 mSdLazyCounter, 2866 mSolverCounterSat, 213 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3930 SdHoareTripleChecker+Valid, 2501 SdHoareTripleChecker+Invalid, 3079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 213 IncrementalHoareTripleChecker+Valid, 2866 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-12 06:45:43,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3930 Valid, 2501 Invalid, 3079 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [213 Valid, 2866 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-12 06:45:44,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234134 states.