./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pals_lcr.5.ufo.UNBOUNDED.pals+Problem12_label00.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 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/combinations/pals_lcr.5.ufo.UNBOUNDED.pals+Problem12_label00.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 890f1e18995284b0a908a97d5deeec0465d64ba29b3115b90de791926566ed26 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 20:53:49,494 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 20:53:49,503 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 20:53:49,546 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 20:53:49,546 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 20:53:49,548 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 20:53:49,550 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 20:53:49,553 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 20:53:49,554 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 20:53:49,558 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 20:53:49,559 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 20:53:49,561 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 20:53:49,561 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 20:53:49,563 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 20:53:49,564 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 20:53:49,566 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 20:53:49,567 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 20:53:49,568 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 20:53:49,568 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 20:53:49,570 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 20:53:49,571 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 20:53:49,571 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 20:53:49,572 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 20:53:49,573 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 20:53:49,574 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 20:53:49,576 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 20:53:49,576 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 20:53:49,577 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 20:53:49,577 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 20:53:49,578 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 20:53:49,578 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 20:53:49,579 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 20:53:49,579 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 20:53:49,580 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 20:53:49,581 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 20:53:49,582 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 20:53:49,582 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 20:53:49,583 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 20:53:49,583 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 20:53:49,583 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 20:53:49,584 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 20:53:49,585 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 20:53:49,585 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 20:53:49,606 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 20:53:49,607 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 20:53:49,608 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 20:53:49,608 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 20:53:49,608 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 20:53:49,609 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 20:53:49,609 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 20:53:49,609 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 20:53:49,609 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 20:53:49,610 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 20:53:49,611 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 20:53:49,611 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 20:53:49,611 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 20:53:49,611 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 20:53:49,611 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 20:53:49,611 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 20:53:49,612 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 20:53:49,612 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 20:53:49,612 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 20:53:49,612 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 20:53:49,613 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 20:53:49,613 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 20:53:49,614 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 20:53:49,614 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 20:53:49,614 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 20:53:49,614 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 20:53:49,615 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 20:53:49,615 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 20:53:49,615 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 20:53:49,615 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 20:53:49,615 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 20:53:49,615 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 20:53:49,616 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 20:53:49,616 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 890f1e18995284b0a908a97d5deeec0465d64ba29b3115b90de791926566ed26 [2022-07-13 20:53:49,856 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 20:53:49,873 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 20:53:49,875 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 20:53:49,876 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 20:53:49,876 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 20:53:49,877 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pals_lcr.5.ufo.UNBOUNDED.pals+Problem12_label00.c [2022-07-13 20:53:49,931 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0489cfb1/25c54f4274d94655b6202762559ca2bb/FLAG585530c04 [2022-07-13 20:53:50,631 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 20:53:50,632 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.5.ufo.UNBOUNDED.pals+Problem12_label00.c [2022-07-13 20:53:50,665 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0489cfb1/25c54f4274d94655b6202762559ca2bb/FLAG585530c04 [2022-07-13 20:53:50,958 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0489cfb1/25c54f4274d94655b6202762559ca2bb [2022-07-13 20:53:50,961 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 20:53:50,962 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 20:53:50,963 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 20:53:50,963 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 20:53:50,970 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 20:53:50,971 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 08:53:50" (1/1) ... [2022-07-13 20:53:50,972 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5eaecad8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:53:50, skipping insertion in model container [2022-07-13 20:53:50,973 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 08:53:50" (1/1) ... [2022-07-13 20:53:50,979 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 20:53:51,099 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 20:53:51,486 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/combinations/pals_lcr.5.ufo.UNBOUNDED.pals+Problem12_label00.c[11668,11681] [2022-07-13 20:53:51,526 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/combinations/pals_lcr.5.ufo.UNBOUNDED.pals+Problem12_label00.c[13543,13556] [2022-07-13 20:53:52,190 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 20:53:52,198 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 20:53:52,220 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/combinations/pals_lcr.5.ufo.UNBOUNDED.pals+Problem12_label00.c[11668,11681] [2022-07-13 20:53:52,223 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/combinations/pals_lcr.5.ufo.UNBOUNDED.pals+Problem12_label00.c[13543,13556] [2022-07-13 20:53:52,594 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 20:53:52,619 INFO L208 MainTranslator]: Completed translation [2022-07-13 20:53:52,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:53:52 WrapperNode [2022-07-13 20:53:52,620 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 20:53:52,621 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 20:53:52,621 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 20:53:52,621 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 20:53:52,627 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:53:52" (1/1) ... [2022-07-13 20:53:52,681 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:53:52" (1/1) ... [2022-07-13 20:53:53,084 INFO L137 Inliner]: procedures = 37, calls = 22, calls flagged for inlining = 17, calls inlined = 17, statements flattened = 5088 [2022-07-13 20:53:53,085 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 20:53:53,086 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 20:53:53,086 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 20:53:53,087 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 20:53:53,109 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:53:52" (1/1) ... [2022-07-13 20:53:53,109 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:53:52" (1/1) ... [2022-07-13 20:53:53,178 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:53:52" (1/1) ... [2022-07-13 20:53:53,179 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:53:52" (1/1) ... [2022-07-13 20:53:53,386 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:53:52" (1/1) ... [2022-07-13 20:53:53,430 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:53:52" (1/1) ... [2022-07-13 20:53:53,452 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:53:52" (1/1) ... [2022-07-13 20:53:53,505 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 20:53:53,507 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 20:53:53,507 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 20:53:53,507 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 20:53:53,510 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:53:52" (1/1) ... [2022-07-13 20:53:53,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 20:53:53,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 20:53:53,547 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) [2022-07-13 20:53:53,575 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 [2022-07-13 20:53:53,588 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 20:53:53,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 20:53:53,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 20:53:53,589 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 20:53:53,737 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 20:53:53,739 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 20:53:57,310 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 20:53:57,331 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 20:53:57,332 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-13 20:53:57,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 08:53:57 BoogieIcfgContainer [2022-07-13 20:53:57,336 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 20:53:57,339 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 20:53:57,339 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 20:53:57,342 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 20:53:57,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 08:53:50" (1/3) ... [2022-07-13 20:53:57,343 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68f9ea9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 08:53:57, skipping insertion in model container [2022-07-13 20:53:57,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:53:52" (2/3) ... [2022-07-13 20:53:57,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68f9ea9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 08:53:57, skipping insertion in model container [2022-07-13 20:53:57,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 08:53:57" (3/3) ... [2022-07-13 20:53:57,345 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.ufo.UNBOUNDED.pals+Problem12_label00.c [2022-07-13 20:53:57,359 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 20:53:57,359 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-13 20:53:57,427 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 20:53:57,435 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@7c5de93, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@262c6577 [2022-07-13 20:53:57,436 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-13 20:53:57,443 INFO L276 IsEmpty]: Start isEmpty. Operand has 911 states, 908 states have (on average 1.8997797356828194) internal successors, (1725), 910 states have internal predecessors, (1725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:53:57,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-13 20:53:57,451 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:53:57,451 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:53:57,452 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:53:57,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:53:57,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1599021611, now seen corresponding path program 1 times [2022-07-13 20:53:57,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:53:57,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036922899] [2022-07-13 20:53:57,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:53:57,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:53:57,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:53:57,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:53:57,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:53:57,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036922899] [2022-07-13 20:53:57,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036922899] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:53:57,678 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:53:57,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 20:53:57,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524933353] [2022-07-13 20:53:57,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:53:57,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 20:53:57,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:53:57,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 20:53:57,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 20:53:57,718 INFO L87 Difference]: Start difference. First operand has 911 states, 908 states have (on average 1.8997797356828194) internal successors, (1725), 910 states have internal predecessors, (1725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:54:01,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:54:01,284 INFO L93 Difference]: Finished difference Result 2538 states and 4880 transitions. [2022-07-13 20:54:01,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 20:54:01,287 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2022-07-13 20:54:01,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:54:01,307 INFO L225 Difference]: With dead ends: 2538 [2022-07-13 20:54:01,308 INFO L226 Difference]: Without dead ends: 1596 [2022-07-13 20:54:01,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 20:54:01,318 INFO L413 NwaCegarLoop]: 300 mSDtfsCounter, 1035 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 2437 mSolverCounterSat, 771 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1035 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 3208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 771 IncrementalHoareTripleChecker+Valid, 2437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-07-13 20:54:01,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1035 Valid, 311 Invalid, 3208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [771 Valid, 2437 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-07-13 20:54:01,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1596 states. [2022-07-13 20:54:01,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1596 to 1596. [2022-07-13 20:54:01,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1596 states, 1594 states have (on average 1.8387703889585947) internal successors, (2931), 1595 states have internal predecessors, (2931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:54:01,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1596 states to 1596 states and 2931 transitions. [2022-07-13 20:54:01,427 INFO L78 Accepts]: Start accepts. Automaton has 1596 states and 2931 transitions. Word has length 16 [2022-07-13 20:54:01,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:54:01,428 INFO L495 AbstractCegarLoop]: Abstraction has 1596 states and 2931 transitions. [2022-07-13 20:54:01,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:54:01,428 INFO L276 IsEmpty]: Start isEmpty. Operand 1596 states and 2931 transitions. [2022-07-13 20:54:01,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-07-13 20:54:01,430 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:54:01,430 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] [2022-07-13 20:54:01,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 20:54:01,431 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:54:01,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:54:01,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1592898568, now seen corresponding path program 1 times [2022-07-13 20:54:01,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:54:01,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524015447] [2022-07-13 20:54:01,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:54:01,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:54:01,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:54:01,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:54:01,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:54:01,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524015447] [2022-07-13 20:54:01,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524015447] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:54:01,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:54:01,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 20:54:01,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303872747] [2022-07-13 20:54:01,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:54:01,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 20:54:01,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:54:01,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 20:54:01,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 20:54:01,532 INFO L87 Difference]: Start difference. First operand 1596 states and 2931 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:54:01,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:54:01,605 INFO L93 Difference]: Finished difference Result 1654 states and 3020 transitions. [2022-07-13 20:54:01,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 20:54:01,605 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2022-07-13 20:54:01,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:54:01,612 INFO L225 Difference]: With dead ends: 1654 [2022-07-13 20:54:01,612 INFO L226 Difference]: Without dead ends: 1596 [2022-07-13 20:54:01,614 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 [2022-07-13 20:54:01,615 INFO L413 NwaCegarLoop]: 1590 mSDtfsCounter, 3 mSDsluCounter, 4736 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6326 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 [2022-07-13 20:54:01,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6326 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:54:01,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1596 states. [2022-07-13 20:54:01,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1596 to 1596. [2022-07-13 20:54:01,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1596 states, 1594 states have (on average 1.819322459222083) internal successors, (2900), 1595 states have internal predecessors, (2900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:54:01,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1596 states to 1596 states and 2900 transitions. [2022-07-13 20:54:01,656 INFO L78 Accepts]: Start accepts. Automaton has 1596 states and 2900 transitions. Word has length 34 [2022-07-13 20:54:01,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:54:01,656 INFO L495 AbstractCegarLoop]: Abstraction has 1596 states and 2900 transitions. [2022-07-13 20:54:01,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:54:01,657 INFO L276 IsEmpty]: Start isEmpty. Operand 1596 states and 2900 transitions. [2022-07-13 20:54:01,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-13 20:54:01,666 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:54:01,667 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:54:01,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 20:54:01,667 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:54:01,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:54:01,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1337087153, now seen corresponding path program 1 times [2022-07-13 20:54:01,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:54:01,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324333784] [2022-07-13 20:54:01,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:54:01,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:54:01,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:54:01,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:54:01,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:54:01,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324333784] [2022-07-13 20:54:01,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324333784] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:54:01,780 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:54:01,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 20:54:01,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286953329] [2022-07-13 20:54:01,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:54:01,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 20:54:01,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:54:01,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 20:54:01,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 20:54:01,784 INFO L87 Difference]: Start difference. First operand 1596 states and 2900 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:54:01,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:54:01,817 INFO L93 Difference]: Finished difference Result 1698 states and 3060 transitions. [2022-07-13 20:54:01,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 20:54:01,818 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-07-13 20:54:01,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:54:01,824 INFO L225 Difference]: With dead ends: 1698 [2022-07-13 20:54:01,824 INFO L226 Difference]: Without dead ends: 1644 [2022-07-13 20:54:01,825 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 [2022-07-13 20:54:01,826 INFO L413 NwaCegarLoop]: 1577 mSDtfsCounter, 1498 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1498 SdHoareTripleChecker+Valid, 1676 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 [2022-07-13 20:54:01,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1498 Valid, 1676 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:54:01,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1644 states. [2022-07-13 20:54:01,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1644 to 1642. [2022-07-13 20:54:01,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1642 states, 1640 states have (on average 1.8128048780487804) internal successors, (2973), 1641 states have internal predecessors, (2973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:54:01,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1642 states to 1642 states and 2973 transitions. [2022-07-13 20:54:01,860 INFO L78 Accepts]: Start accepts. Automaton has 1642 states and 2973 transitions. Word has length 64 [2022-07-13 20:54:01,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:54:01,861 INFO L495 AbstractCegarLoop]: Abstraction has 1642 states and 2973 transitions. [2022-07-13 20:54:01,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:54:01,861 INFO L276 IsEmpty]: Start isEmpty. Operand 1642 states and 2973 transitions. [2022-07-13 20:54:01,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-13 20:54:01,862 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:54:01,862 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:54:01,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 20:54:01,863 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:54:01,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:54:01,863 INFO L85 PathProgramCache]: Analyzing trace with hash -119101755, now seen corresponding path program 1 times [2022-07-13 20:54:01,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:54:01,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157233370] [2022-07-13 20:54:01,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:54:01,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:54:01,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:54:01,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:54:01,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:54:01,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157233370] [2022-07-13 20:54:01,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157233370] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:54:01,948 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:54:01,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 20:54:01,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712512038] [2022-07-13 20:54:01,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:54:01,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 20:54:01,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:54:01,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 20:54:01,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:54:01,950 INFO L87 Difference]: Start difference. First operand 1642 states and 2973 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:54:02,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:54:02,159 INFO L93 Difference]: Finished difference Result 2642 states and 4553 transitions. [2022-07-13 20:54:02,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 20:54:02,160 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-07-13 20:54:02,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:54:02,170 INFO L225 Difference]: With dead ends: 2642 [2022-07-13 20:54:02,170 INFO L226 Difference]: Without dead ends: 2542 [2022-07-13 20:54:02,172 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 [2022-07-13 20:54:02,179 INFO L413 NwaCegarLoop]: 1555 mSDtfsCounter, 8419 mSDsluCounter, 908 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8419 SdHoareTripleChecker+Valid, 2463 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 20:54:02,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8419 Valid, 2463 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 20:54:02,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2542 states. [2022-07-13 20:54:02,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2542 to 1740. [2022-07-13 20:54:02,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1740 states, 1738 states have (on average 1.7986191024165707) internal successors, (3126), 1739 states have internal predecessors, (3126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:54:02,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1740 states to 1740 states and 3126 transitions. [2022-07-13 20:54:02,231 INFO L78 Accepts]: Start accepts. Automaton has 1740 states and 3126 transitions. Word has length 64 [2022-07-13 20:54:02,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:54:02,233 INFO L495 AbstractCegarLoop]: Abstraction has 1740 states and 3126 transitions. [2022-07-13 20:54:02,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:54:02,233 INFO L276 IsEmpty]: Start isEmpty. Operand 1740 states and 3126 transitions. [2022-07-13 20:54:02,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-13 20:54:02,235 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:54:02,235 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] [2022-07-13 20:54:02,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 20:54:02,235 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:54:02,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:54:02,236 INFO L85 PathProgramCache]: Analyzing trace with hash 91634997, now seen corresponding path program 1 times [2022-07-13 20:54:02,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:54:02,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165802292] [2022-07-13 20:54:02,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:54:02,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:54:02,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:54:02,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:54:02,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:54:02,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165802292] [2022-07-13 20:54:02,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165802292] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:54:02,334 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:54:02,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 20:54:02,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901709738] [2022-07-13 20:54:02,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:54:02,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 20:54:02,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:54:02,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 20:54:02,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 20:54:02,336 INFO L87 Difference]: Start difference. First operand 1740 states and 3126 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 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) [2022-07-13 20:54:02,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:54:02,449 INFO L93 Difference]: Finished difference Result 2114 states and 3710 transitions. [2022-07-13 20:54:02,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 20:54:02,450 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 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 [2022-07-13 20:54:02,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:54:02,457 INFO L225 Difference]: With dead ends: 2114 [2022-07-13 20:54:02,457 INFO L226 Difference]: Without dead ends: 1916 [2022-07-13 20:54:02,458 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 [2022-07-13 20:54:02,459 INFO L413 NwaCegarLoop]: 1557 mSDtfsCounter, 1489 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1489 SdHoareTripleChecker+Valid, 1635 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:54:02,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1489 Valid, 1635 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:54:02,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1916 states. [2022-07-13 20:54:02,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1916 to 1910. [2022-07-13 20:54:02,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1910 states, 1908 states have (on average 1.7735849056603774) internal successors, (3384), 1909 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:54:02,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1910 states to 1910 states and 3384 transitions. [2022-07-13 20:54:02,513 INFO L78 Accepts]: Start accepts. Automaton has 1910 states and 3384 transitions. Word has length 66 [2022-07-13 20:54:02,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:54:02,514 INFO L495 AbstractCegarLoop]: Abstraction has 1910 states and 3384 transitions. [2022-07-13 20:54:02,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 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) [2022-07-13 20:54:02,514 INFO L276 IsEmpty]: Start isEmpty. Operand 1910 states and 3384 transitions. [2022-07-13 20:54:02,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-13 20:54:02,515 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:54:02,515 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] [2022-07-13 20:54:02,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 20:54:02,516 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:54:02,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:54:02,516 INFO L85 PathProgramCache]: Analyzing trace with hash 158128509, now seen corresponding path program 1 times [2022-07-13 20:54:02,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:54:02,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204704929] [2022-07-13 20:54:02,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:54:02,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:54:02,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:54:02,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:54:02,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:54:02,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204704929] [2022-07-13 20:54:02,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204704929] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:54:02,678 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:54:02,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 20:54:02,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294935015] [2022-07-13 20:54:02,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:54:02,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 20:54:02,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:54:02,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 20:54:02,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:54:02,680 INFO L87 Difference]: Start difference. First operand 1910 states and 3384 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 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) [2022-07-13 20:54:02,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:54:02,873 INFO L93 Difference]: Finished difference Result 2280 states and 3954 transitions. [2022-07-13 20:54:02,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 20:54:02,874 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 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 [2022-07-13 20:54:02,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:54:02,882 INFO L225 Difference]: With dead ends: 2280 [2022-07-13 20:54:02,883 INFO L226 Difference]: Without dead ends: 1912 [2022-07-13 20:54:02,884 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 [2022-07-13 20:54:02,885 INFO L413 NwaCegarLoop]: 1568 mSDtfsCounter, 3170 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3170 SdHoareTripleChecker+Valid, 1896 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:54:02,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3170 Valid, 1896 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:54:02,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1912 states. [2022-07-13 20:54:02,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1912 to 1910. [2022-07-13 20:54:02,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1910 states, 1908 states have (on average 1.771488469601677) internal successors, (3380), 1909 states have internal predecessors, (3380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:54:02,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1910 states to 1910 states and 3380 transitions. [2022-07-13 20:54:02,945 INFO L78 Accepts]: Start accepts. Automaton has 1910 states and 3380 transitions. Word has length 66 [2022-07-13 20:54:02,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:54:02,946 INFO L495 AbstractCegarLoop]: Abstraction has 1910 states and 3380 transitions. [2022-07-13 20:54:02,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 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) [2022-07-13 20:54:02,946 INFO L276 IsEmpty]: Start isEmpty. Operand 1910 states and 3380 transitions. [2022-07-13 20:54:02,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-13 20:54:02,947 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:54:02,947 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] [2022-07-13 20:54:02,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 20:54:02,948 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:54:02,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:54:02,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1100417095, now seen corresponding path program 1 times [2022-07-13 20:54:02,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:54:02,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625666355] [2022-07-13 20:54:02,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:54:02,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:54:02,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:54:02,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:54:02,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:54:02,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625666355] [2022-07-13 20:54:02,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625666355] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:54:02,988 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:54:02,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 20:54:02,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622695538] [2022-07-13 20:54:02,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:54:02,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 20:54:02,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:54:02,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 20:54:02,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 20:54:02,990 INFO L87 Difference]: Start difference. First operand 1910 states and 3380 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 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) [2022-07-13 20:54:03,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:54:03,060 INFO L93 Difference]: Finished difference Result 2598 states and 4430 transitions. [2022-07-13 20:54:03,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 20:54:03,061 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 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 [2022-07-13 20:54:03,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:54:03,070 INFO L225 Difference]: With dead ends: 2598 [2022-07-13 20:54:03,071 INFO L226 Difference]: Without dead ends: 2230 [2022-07-13 20:54:03,072 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 [2022-07-13 20:54:03,073 INFO L413 NwaCegarLoop]: 1591 mSDtfsCounter, 1502 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1502 SdHoareTripleChecker+Valid, 1686 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 [2022-07-13 20:54:03,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1502 Valid, 1686 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:54:03,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2230 states. [2022-07-13 20:54:03,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2230 to 2228. [2022-07-13 20:54:03,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2228 states, 2226 states have (on average 1.7322551662174304) internal successors, (3856), 2227 states have internal predecessors, (3856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:54:03,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2228 states to 2228 states and 3856 transitions. [2022-07-13 20:54:03,150 INFO L78 Accepts]: Start accepts. Automaton has 2228 states and 3856 transitions. Word has length 66 [2022-07-13 20:54:03,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:54:03,151 INFO L495 AbstractCegarLoop]: Abstraction has 2228 states and 3856 transitions. [2022-07-13 20:54:03,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 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) [2022-07-13 20:54:03,151 INFO L276 IsEmpty]: Start isEmpty. Operand 2228 states and 3856 transitions. [2022-07-13 20:54:03,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-13 20:54:03,152 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:54:03,152 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] [2022-07-13 20:54:03,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 20:54:03,153 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:54:03,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:54:03,153 INFO L85 PathProgramCache]: Analyzing trace with hash -826729383, now seen corresponding path program 1 times [2022-07-13 20:54:03,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:54:03,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736031460] [2022-07-13 20:54:03,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:54:03,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:54:03,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:54:03,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:54:03,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:54:03,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736031460] [2022-07-13 20:54:03,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736031460] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:54:03,188 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:54:03,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 20:54:03,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354213689] [2022-07-13 20:54:03,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:54:03,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 20:54:03,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:54:03,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 20:54:03,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 20:54:03,192 INFO L87 Difference]: Start difference. First operand 2228 states and 3856 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 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) [2022-07-13 20:54:03,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:54:03,300 INFO L93 Difference]: Finished difference Result 3504 states and 5778 transitions. [2022-07-13 20:54:03,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 20:54:03,301 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 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 [2022-07-13 20:54:03,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:54:03,312 INFO L225 Difference]: With dead ends: 3504 [2022-07-13 20:54:03,312 INFO L226 Difference]: Without dead ends: 2818 [2022-07-13 20:54:03,314 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 [2022-07-13 20:54:03,314 INFO L413 NwaCegarLoop]: 1604 mSDtfsCounter, 1506 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1506 SdHoareTripleChecker+Valid, 1695 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 [2022-07-13 20:54:03,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1506 Valid, 1695 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:54:03,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2818 states. [2022-07-13 20:54:03,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2818 to 2816. [2022-07-13 20:54:03,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2816 states, 2814 states have (on average 1.6773276474769012) internal successors, (4720), 2815 states have internal predecessors, (4720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:54:03,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2816 states to 2816 states and 4720 transitions. [2022-07-13 20:54:03,434 INFO L78 Accepts]: Start accepts. Automaton has 2816 states and 4720 transitions. Word has length 66 [2022-07-13 20:54:03,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:54:03,435 INFO L495 AbstractCegarLoop]: Abstraction has 2816 states and 4720 transitions. [2022-07-13 20:54:03,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 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) [2022-07-13 20:54:03,435 INFO L276 IsEmpty]: Start isEmpty. Operand 2816 states and 4720 transitions. [2022-07-13 20:54:03,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-13 20:54:03,436 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:54:03,436 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] [2022-07-13 20:54:03,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 20:54:03,437 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:54:03,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:54:03,437 INFO L85 PathProgramCache]: Analyzing trace with hash 992342265, now seen corresponding path program 1 times [2022-07-13 20:54:03,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:54:03,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164471153] [2022-07-13 20:54:03,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:54:03,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:54:03,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:54:03,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:54:03,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:54:03,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164471153] [2022-07-13 20:54:03,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164471153] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:54:03,471 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:54:03,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 20:54:03,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45402263] [2022-07-13 20:54:03,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:54:03,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 20:54:03,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:54:03,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 20:54:03,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 20:54:03,473 INFO L87 Difference]: Start difference. First operand 2816 states and 4720 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 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) [2022-07-13 20:54:03,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:54:03,732 INFO L93 Difference]: Finished difference Result 5172 states and 8210 transitions. [2022-07-13 20:54:03,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 20:54:03,733 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 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 [2022-07-13 20:54:03,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:54:03,750 INFO L225 Difference]: With dead ends: 5172 [2022-07-13 20:54:03,750 INFO L226 Difference]: Without dead ends: 3898 [2022-07-13 20:54:03,753 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 [2022-07-13 20:54:03,754 INFO L413 NwaCegarLoop]: 1617 mSDtfsCounter, 1510 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1510 SdHoareTripleChecker+Valid, 1704 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 [2022-07-13 20:54:03,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1510 Valid, 1704 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:54:03,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3898 states. [2022-07-13 20:54:03,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3898 to 3896. [2022-07-13 20:54:03,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3896 states, 3894 states have (on average 1.610683102208526) internal successors, (6272), 3895 states have internal predecessors, (6272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:54:04,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3896 states to 3896 states and 6272 transitions. [2022-07-13 20:54:04,008 INFO L78 Accepts]: Start accepts. Automaton has 3896 states and 6272 transitions. Word has length 66 [2022-07-13 20:54:04,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:54:04,008 INFO L495 AbstractCegarLoop]: Abstraction has 3896 states and 6272 transitions. [2022-07-13 20:54:04,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 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) [2022-07-13 20:54:04,009 INFO L276 IsEmpty]: Start isEmpty. Operand 3896 states and 6272 transitions. [2022-07-13 20:54:04,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-13 20:54:04,010 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:54:04,010 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:54:04,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 20:54:04,010 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:54:04,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:54:04,011 INFO L85 PathProgramCache]: Analyzing trace with hash 192293446, now seen corresponding path program 1 times [2022-07-13 20:54:04,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:54:04,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279165065] [2022-07-13 20:54:04,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:54:04,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:54:04,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:54:04,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:54:04,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:54:04,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279165065] [2022-07-13 20:54:04,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279165065] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:54:04,070 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:54:04,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 20:54:04,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128907307] [2022-07-13 20:54:04,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:54:04,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 20:54:04,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:54:04,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 20:54:04,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 20:54:04,072 INFO L87 Difference]: Start difference. First operand 3896 states and 6272 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:54:04,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:54:04,472 INFO L93 Difference]: Finished difference Result 5654 states and 8806 transitions. [2022-07-13 20:54:04,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 20:54:04,472 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-07-13 20:54:04,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:54:04,494 INFO L225 Difference]: With dead ends: 5654 [2022-07-13 20:54:04,495 INFO L226 Difference]: Without dead ends: 5652 [2022-07-13 20:54:04,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-13 20:54:04,498 INFO L413 NwaCegarLoop]: 1606 mSDtfsCounter, 225 mSDsluCounter, 4685 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 6291 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:54:04,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 6291 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:54:04,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5652 states. [2022-07-13 20:54:04,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5652 to 3992. [2022-07-13 20:54:04,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3992 states, 3990 states have (on average 1.5919799498746867) internal successors, (6352), 3991 states have internal predecessors, (6352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:54:04,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3992 states to 3992 states and 6352 transitions. [2022-07-13 20:54:04,834 INFO L78 Accepts]: Start accepts. Automaton has 3992 states and 6352 transitions. Word has length 67 [2022-07-13 20:54:04,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:54:04,834 INFO L495 AbstractCegarLoop]: Abstraction has 3992 states and 6352 transitions. [2022-07-13 20:54:04,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:54:04,835 INFO L276 IsEmpty]: Start isEmpty. Operand 3992 states and 6352 transitions. [2022-07-13 20:54:04,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-13 20:54:04,836 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:54:04,836 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:54:04,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 20:54:04,837 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:54:04,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:54:04,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1338319212, now seen corresponding path program 1 times [2022-07-13 20:54:04,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:54:04,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750650930] [2022-07-13 20:54:04,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:54:04,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:54:04,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:54:04,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:54:04,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:54:04,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750650930] [2022-07-13 20:54:04,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750650930] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:54:04,881 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:54:04,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 20:54:04,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526328767] [2022-07-13 20:54:04,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:54:04,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 20:54:04,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:54:04,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 20:54:04,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 20:54:04,883 INFO L87 Difference]: Start difference. First operand 3992 states and 6352 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:54:05,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:54:05,163 INFO L93 Difference]: Finished difference Result 6495 states and 10006 transitions. [2022-07-13 20:54:05,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 20:54:05,164 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-07-13 20:54:05,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:54:05,182 INFO L225 Difference]: With dead ends: 6495 [2022-07-13 20:54:05,183 INFO L226 Difference]: Without dead ends: 5116 [2022-07-13 20:54:05,187 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 [2022-07-13 20:54:05,188 INFO L413 NwaCegarLoop]: 1625 mSDtfsCounter, 1511 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1511 SdHoareTripleChecker+Valid, 1708 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 [2022-07-13 20:54:05,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1511 Valid, 1708 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:54:05,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5116 states. [2022-07-13 20:54:05,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5116 to 5114. [2022-07-13 20:54:05,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5114 states, 5112 states have (on average 1.5528169014084507) internal successors, (7938), 5113 states have internal predecessors, (7938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:54:05,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5114 states to 5114 states and 7938 transitions. [2022-07-13 20:54:05,613 INFO L78 Accepts]: Start accepts. Automaton has 5114 states and 7938 transitions. Word has length 68 [2022-07-13 20:54:05,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:54:05,614 INFO L495 AbstractCegarLoop]: Abstraction has 5114 states and 7938 transitions. [2022-07-13 20:54:05,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:54:05,616 INFO L276 IsEmpty]: Start isEmpty. Operand 5114 states and 7938 transitions. [2022-07-13 20:54:05,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-07-13 20:54:05,617 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:54:05,617 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:54:05,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 20:54:05,618 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:54:05,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:54:05,618 INFO L85 PathProgramCache]: Analyzing trace with hash 363365800, now seen corresponding path program 1 times [2022-07-13 20:54:05,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:54:05,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038004273] [2022-07-13 20:54:05,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:54:05,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:54:05,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:54:05,699 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:54:05,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:54:05,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038004273] [2022-07-13 20:54:05,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038004273] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:54:05,700 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:54:05,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 20:54:05,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839700521] [2022-07-13 20:54:05,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:54:05,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 20:54:05,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:54:05,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 20:54:05,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 20:54:05,701 INFO L87 Difference]: Start difference. First operand 5114 states and 7938 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:54:11,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:54:11,624 INFO L93 Difference]: Finished difference Result 8873 states and 14829 transitions. [2022-07-13 20:54:11,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 20:54:11,626 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2022-07-13 20:54:11,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:54:11,640 INFO L225 Difference]: With dead ends: 8873 [2022-07-13 20:54:11,640 INFO L226 Difference]: Without dead ends: 7369 [2022-07-13 20:54:11,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 20:54:11,643 INFO L413 NwaCegarLoop]: 817 mSDtfsCounter, 2405 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 4807 mSolverCounterSat, 1137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2405 SdHoareTripleChecker+Valid, 838 SdHoareTripleChecker+Invalid, 5944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1137 IncrementalHoareTripleChecker+Valid, 4807 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-07-13 20:54:11,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2405 Valid, 838 Invalid, 5944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1137 Valid, 4807 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2022-07-13 20:54:11,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7369 states. [2022-07-13 20:54:12,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7369 to 7367. [2022-07-13 20:54:12,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7367 states, 7365 states have (on average 1.4294636795655125) internal successors, (10528), 7366 states have internal predecessors, (10528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:54:12,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7367 states to 7367 states and 10528 transitions. [2022-07-13 20:54:12,052 INFO L78 Accepts]: Start accepts. Automaton has 7367 states and 10528 transitions. Word has length 85 [2022-07-13 20:54:12,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:54:12,052 INFO L495 AbstractCegarLoop]: Abstraction has 7367 states and 10528 transitions. [2022-07-13 20:54:12,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:54:12,053 INFO L276 IsEmpty]: Start isEmpty. Operand 7367 states and 10528 transitions. [2022-07-13 20:54:12,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-07-13 20:54:12,054 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:54:12,054 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:54:12,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 20:54:12,055 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:54:12,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:54:12,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1621045453, now seen corresponding path program 1 times [2022-07-13 20:54:12,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:54:12,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823535219] [2022-07-13 20:54:12,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:54:12,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:54:12,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:54:12,107 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:54:12,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:54:12,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823535219] [2022-07-13 20:54:12,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823535219] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:54:12,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:54:12,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 20:54:12,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460069152] [2022-07-13 20:54:12,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:54:12,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 20:54:12,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:54:12,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 20:54:12,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 20:54:12,110 INFO L87 Difference]: Start difference. First operand 7367 states and 10528 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:54:15,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:54:15,144 INFO L93 Difference]: Finished difference Result 11875 states and 17912 transitions. [2022-07-13 20:54:15,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 20:54:15,145 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 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 87 [2022-07-13 20:54:15,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:54:15,161 INFO L225 Difference]: With dead ends: 11875 [2022-07-13 20:54:15,162 INFO L226 Difference]: Without dead ends: 8869 [2022-07-13 20:54:15,168 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 [2022-07-13 20:54:15,168 INFO L413 NwaCegarLoop]: 1092 mSDtfsCounter, 775 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 2319 mSolverCounterSat, 746 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 775 SdHoareTripleChecker+Valid, 1222 SdHoareTripleChecker+Invalid, 3065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 746 IncrementalHoareTripleChecker+Valid, 2319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-13 20:54:15,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [775 Valid, 1222 Invalid, 3065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [746 Valid, 2319 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-13 20:54:15,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8869 states. [2022-07-13 20:54:15,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8869 to 8869. [2022-07-13 20:54:15,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8869 states, 8867 states have (on average 1.4555091913837825) internal successors, (12906), 8868 states have internal predecessors, (12906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:54:15,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8869 states to 8869 states and 12906 transitions. [2022-07-13 20:54:15,667 INFO L78 Accepts]: Start accepts. Automaton has 8869 states and 12906 transitions. Word has length 87 [2022-07-13 20:54:15,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:54:15,667 INFO L495 AbstractCegarLoop]: Abstraction has 8869 states and 12906 transitions. [2022-07-13 20:54:15,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:54:15,668 INFO L276 IsEmpty]: Start isEmpty. Operand 8869 states and 12906 transitions. [2022-07-13 20:54:15,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-07-13 20:54:15,670 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:54:15,670 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:54:15,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-13 20:54:15,671 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:54:15,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:54:15,672 INFO L85 PathProgramCache]: Analyzing trace with hash -482219864, now seen corresponding path program 1 times [2022-07-13 20:54:15,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:54:15,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672007117] [2022-07-13 20:54:15,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:54:15,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:54:15,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:54:15,741 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-13 20:54:15,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:54:15,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672007117] [2022-07-13 20:54:15,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672007117] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:54:15,741 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:54:15,741 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 20:54:15,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921577614] [2022-07-13 20:54:15,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:54:15,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 20:54:15,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:54:15,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 20:54:15,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:54:15,743 INFO L87 Difference]: Start difference. First operand 8869 states and 12906 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:54:16,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:54:16,918 INFO L93 Difference]: Finished difference Result 27441 states and 39504 transitions. [2022-07-13 20:54:16,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 20:54:16,919 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 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 [2022-07-13 20:54:16,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:54:16,968 INFO L225 Difference]: With dead ends: 27441 [2022-07-13 20:54:16,968 INFO L226 Difference]: Without dead ends: 23871 [2022-07-13 20:54:16,982 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 [2022-07-13 20:54:16,983 INFO L413 NwaCegarLoop]: 1635 mSDtfsCounter, 6643 mSDsluCounter, 1936 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6643 SdHoareTripleChecker+Valid, 3571 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:54:16,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6643 Valid, 3571 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:54:17,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23871 states. [2022-07-13 20:54:17,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23871 to 12437. [2022-07-13 20:54:17,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12437 states, 12435 states have (on average 1.4457579412947326) internal successors, (17978), 12436 states have internal predecessors, (17978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:54:17,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12437 states to 12437 states and 17978 transitions. [2022-07-13 20:54:17,750 INFO L78 Accepts]: Start accepts. Automaton has 12437 states and 17978 transitions. Word has length 95 [2022-07-13 20:54:17,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:54:17,750 INFO L495 AbstractCegarLoop]: Abstraction has 12437 states and 17978 transitions. [2022-07-13 20:54:17,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:54:17,751 INFO L276 IsEmpty]: Start isEmpty. Operand 12437 states and 17978 transitions. [2022-07-13 20:54:17,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-07-13 20:54:17,753 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:54:17,754 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:54:17,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-13 20:54:17,754 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:54:17,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:54:17,755 INFO L85 PathProgramCache]: Analyzing trace with hash -452697646, now seen corresponding path program 1 times [2022-07-13 20:54:17,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:54:17,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458619741] [2022-07-13 20:54:17,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:54:17,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:54:17,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:54:17,834 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-13 20:54:17,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:54:17,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458619741] [2022-07-13 20:54:17,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458619741] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:54:17,835 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:54:17,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 20:54:17,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985458024] [2022-07-13 20:54:17,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:54:17,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 20:54:17,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:54:17,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 20:54:17,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:54:17,836 INFO L87 Difference]: Start difference. First operand 12437 states and 17978 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:54:19,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:54:19,304 INFO L93 Difference]: Finished difference Result 31009 states and 44576 transitions. [2022-07-13 20:54:19,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 20:54:19,304 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 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 [2022-07-13 20:54:19,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:54:19,356 INFO L225 Difference]: With dead ends: 31009 [2022-07-13 20:54:19,356 INFO L226 Difference]: Without dead ends: 27439 [2022-07-13 20:54:19,372 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 [2022-07-13 20:54:19,373 INFO L413 NwaCegarLoop]: 1637 mSDtfsCounter, 6527 mSDsluCounter, 2007 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6527 SdHoareTripleChecker+Valid, 3644 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 [2022-07-13 20:54:19,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6527 Valid, 3644 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 20:54:19,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27439 states. [2022-07-13 20:54:20,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27439 to 17797. [2022-07-13 20:54:20,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17797 states, 17795 states have (on average 1.4355717898286036) internal successors, (25546), 17796 states have internal predecessors, (25546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:54:20,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17797 states to 17797 states and 25546 transitions. [2022-07-13 20:54:20,497 INFO L78 Accepts]: Start accepts. Automaton has 17797 states and 25546 transitions. Word has length 95 [2022-07-13 20:54:20,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:54:20,498 INFO L495 AbstractCegarLoop]: Abstraction has 17797 states and 25546 transitions. [2022-07-13 20:54:20,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:54:20,498 INFO L276 IsEmpty]: Start isEmpty. Operand 17797 states and 25546 transitions. [2022-07-13 20:54:20,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-07-13 20:54:20,509 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:54:20,509 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:54:20,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-13 20:54:20,510 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:54:20,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:54:20,510 INFO L85 PathProgramCache]: Analyzing trace with hash -179009934, now seen corresponding path program 1 times [2022-07-13 20:54:20,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:54:20,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975985801] [2022-07-13 20:54:20,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:54:20,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:54:20,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:54:20,581 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-13 20:54:20,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:54:20,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975985801] [2022-07-13 20:54:20,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975985801] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:54:20,584 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:54:20,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 20:54:20,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946569811] [2022-07-13 20:54:20,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:54:20,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 20:54:20,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:54:20,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 20:54:20,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:54:20,586 INFO L87 Difference]: Start difference. First operand 17797 states and 25546 transitions. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:54:22,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:54:22,394 INFO L93 Difference]: Finished difference Result 34577 states and 49648 transitions. [2022-07-13 20:54:22,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 20:54:22,395 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 0 states have call successors, (0), 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 [2022-07-13 20:54:22,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:54:22,445 INFO L225 Difference]: With dead ends: 34577 [2022-07-13 20:54:22,445 INFO L226 Difference]: Without dead ends: 31007 [2022-07-13 20:54:22,461 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 [2022-07-13 20:54:22,462 INFO L413 NwaCegarLoop]: 1637 mSDtfsCounter, 6541 mSDsluCounter, 2020 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6541 SdHoareTripleChecker+Valid, 3657 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:54:22,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6541 Valid, 3657 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:54:22,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31007 states. [2022-07-13 20:54:23,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31007 to 21365. [2022-07-13 20:54:23,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21365 states, 21363 states have (on average 1.4332256705518889) internal successors, (30618), 21364 states have internal predecessors, (30618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:54:23,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21365 states to 21365 states and 30618 transitions. [2022-07-13 20:54:23,862 INFO L78 Accepts]: Start accepts. Automaton has 21365 states and 30618 transitions. Word has length 95 [2022-07-13 20:54:23,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:54:23,863 INFO L495 AbstractCegarLoop]: Abstraction has 21365 states and 30618 transitions. [2022-07-13 20:54:23,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:54:23,863 INFO L276 IsEmpty]: Start isEmpty. Operand 21365 states and 30618 transitions. [2022-07-13 20:54:23,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-07-13 20:54:23,867 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:54:23,867 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:54:23,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-13 20:54:23,867 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:54:23,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:54:23,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1640061714, now seen corresponding path program 1 times [2022-07-13 20:54:23,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:54:23,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393156367] [2022-07-13 20:54:23,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:54:23,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:54:23,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:54:23,935 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-13 20:54:23,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:54:23,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393156367] [2022-07-13 20:54:23,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393156367] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:54:23,936 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:54:23,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 20:54:23,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170614945] [2022-07-13 20:54:23,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:54:23,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 20:54:23,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:54:23,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 20:54:23,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:54:23,938 INFO L87 Difference]: Start difference. First operand 21365 states and 30618 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) [2022-07-13 20:54:26,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:54:26,309 INFO L93 Difference]: Finished difference Result 38145 states and 54720 transitions. [2022-07-13 20:54:26,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 20:54:26,309 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 95 [2022-07-13 20:54:26,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:54:26,359 INFO L225 Difference]: With dead ends: 38145 [2022-07-13 20:54:26,359 INFO L226 Difference]: Without dead ends: 34575 [2022-07-13 20:54:26,373 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 [2022-07-13 20:54:26,374 INFO L413 NwaCegarLoop]: 1635 mSDtfsCounter, 6608 mSDsluCounter, 2005 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6608 SdHoareTripleChecker+Valid, 3640 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 [2022-07-13 20:54:26,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6608 Valid, 3640 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 20:54:26,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34575 states. [2022-07-13 20:54:28,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34575 to 24933. [2022-07-13 20:54:28,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24933 states, 24931 states have (on average 1.4315510809835146) internal successors, (35690), 24932 states have internal predecessors, (35690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:54:28,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24933 states to 24933 states and 35690 transitions. [2022-07-13 20:54:28,230 INFO L78 Accepts]: Start accepts. Automaton has 24933 states and 35690 transitions. Word has length 95 [2022-07-13 20:54:28,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:54:28,231 INFO L495 AbstractCegarLoop]: Abstraction has 24933 states and 35690 transitions. [2022-07-13 20:54:28,231 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) [2022-07-13 20:54:28,231 INFO L276 IsEmpty]: Start isEmpty. Operand 24933 states and 35690 transitions. [2022-07-13 20:54:28,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-07-13 20:54:28,236 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:54:28,236 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:54:28,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-13 20:54:28,237 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:54:28,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:54:28,237 INFO L85 PathProgramCache]: Analyzing trace with hash -906023264, now seen corresponding path program 1 times [2022-07-13 20:54:28,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:54:28,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387352455] [2022-07-13 20:54:28,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:54:28,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:54:28,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:54:28,278 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:54:28,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:54:28,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387352455] [2022-07-13 20:54:28,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387352455] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:54:28,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:54:28,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 20:54:28,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245824706] [2022-07-13 20:54:28,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:54:28,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 20:54:28,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:54:28,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 20:54:28,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 20:54:28,280 INFO L87 Difference]: Start difference. First operand 24933 states and 35690 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:54:29,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:54:29,578 INFO L93 Difference]: Finished difference Result 38695 states and 55440 transitions. [2022-07-13 20:54:29,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 20:54:29,578 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 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 97 [2022-07-13 20:54:29,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:54:29,601 INFO L225 Difference]: With dead ends: 38695 [2022-07-13 20:54:29,601 INFO L226 Difference]: Without dead ends: 19061 [2022-07-13 20:54:29,620 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 [2022-07-13 20:54:29,621 INFO L413 NwaCegarLoop]: 1601 mSDtfsCounter, 54 mSDsluCounter, 1545 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 3146 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:54:29,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 3146 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:54:29,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19061 states. [2022-07-13 20:54:31,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19061 to 19059. [2022-07-13 20:54:31,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19059 states, 19057 states have (on average 1.4355354987668574) internal successors, (27357), 19058 states have internal predecessors, (27357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:54:31,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19059 states to 19059 states and 27357 transitions. [2022-07-13 20:54:31,115 INFO L78 Accepts]: Start accepts. Automaton has 19059 states and 27357 transitions. Word has length 97 [2022-07-13 20:54:31,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:54:31,115 INFO L495 AbstractCegarLoop]: Abstraction has 19059 states and 27357 transitions. [2022-07-13 20:54:31,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:54:31,116 INFO L276 IsEmpty]: Start isEmpty. Operand 19059 states and 27357 transitions. [2022-07-13 20:54:31,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-07-13 20:54:31,120 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:54:31,120 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:54:31,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-13 20:54:31,120 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:54:31,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:54:31,121 INFO L85 PathProgramCache]: Analyzing trace with hash -615309075, now seen corresponding path program 1 times [2022-07-13 20:54:31,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:54:31,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126672036] [2022-07-13 20:54:31,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:54:31,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:54:31,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:54:31,190 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 20:54:31,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:54:31,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126672036] [2022-07-13 20:54:31,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126672036] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:54:31,191 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:54:31,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 20:54:31,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77386646] [2022-07-13 20:54:31,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:54:31,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 20:54:31,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:54:31,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 20:54:31,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:54:31,194 INFO L87 Difference]: Start difference. First operand 19059 states and 27357 transitions. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:54:33,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:54:33,261 INFO L93 Difference]: Finished difference Result 31551 states and 45283 transitions. [2022-07-13 20:54:33,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 20:54:33,261 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 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 97 [2022-07-13 20:54:33,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:54:33,298 INFO L225 Difference]: With dead ends: 31551 [2022-07-13 20:54:33,298 INFO L226 Difference]: Without dead ends: 29053 [2022-07-13 20:54:33,309 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 [2022-07-13 20:54:33,310 INFO L413 NwaCegarLoop]: 1634 mSDtfsCounter, 6588 mSDsluCounter, 1974 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6588 SdHoareTripleChecker+Valid, 3608 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 [2022-07-13 20:54:33,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6588 Valid, 3608 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 20:54:33,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29053 states. [2022-07-13 20:54:34,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29053 to 21555. [2022-07-13 20:54:34,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21555 states, 21553 states have (on average 1.4340927017120586) internal successors, (30909), 21554 states have internal predecessors, (30909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:54:34,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21555 states to 21555 states and 30909 transitions. [2022-07-13 20:54:34,829 INFO L78 Accepts]: Start accepts. Automaton has 21555 states and 30909 transitions. Word has length 97 [2022-07-13 20:54:34,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:54:34,830 INFO L495 AbstractCegarLoop]: Abstraction has 21555 states and 30909 transitions. [2022-07-13 20:54:34,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:54:34,830 INFO L276 IsEmpty]: Start isEmpty. Operand 21555 states and 30909 transitions. [2022-07-13 20:54:34,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-07-13 20:54:34,834 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:54:34,834 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:54:34,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-13 20:54:34,835 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:54:34,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:54:34,835 INFO L85 PathProgramCache]: Analyzing trace with hash -605888281, now seen corresponding path program 1 times [2022-07-13 20:54:34,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:54:34,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320498181] [2022-07-13 20:54:34,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:54:34,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:54:34,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:54:34,872 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:54:34,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:54:34,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320498181] [2022-07-13 20:54:34,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320498181] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:54:34,873 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:54:34,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 20:54:34,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936348658] [2022-07-13 20:54:34,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:54:34,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 20:54:34,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:54:34,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 20:54:34,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 20:54:34,874 INFO L87 Difference]: Start difference. First operand 21555 states and 30909 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:54:35,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:54:35,652 INFO L93 Difference]: Finished difference Result 29671 states and 42455 transitions. [2022-07-13 20:54:35,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 20:54:35,653 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2022-07-13 20:54:35,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:54:35,668 INFO L225 Difference]: With dead ends: 29671 [2022-07-13 20:54:35,668 INFO L226 Difference]: Without dead ends: 13445 [2022-07-13 20:54:35,679 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 [2022-07-13 20:54:35,680 INFO L413 NwaCegarLoop]: 1594 mSDtfsCounter, 48 mSDsluCounter, 1537 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 3131 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:54:35,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 3131 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:54:35,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13445 states. [2022-07-13 20:54:36,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13445 to 13443. [2022-07-13 20:54:36,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13443 states, 13441 states have (on average 1.4330034967636336) internal successors, (19261), 13442 states have internal predecessors, (19261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:54:36,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13443 states to 13443 states and 19261 transitions. [2022-07-13 20:54:36,493 INFO L78 Accepts]: Start accepts. Automaton has 13443 states and 19261 transitions. Word has length 98 [2022-07-13 20:54:36,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:54:36,493 INFO L495 AbstractCegarLoop]: Abstraction has 13443 states and 19261 transitions. [2022-07-13 20:54:36,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:54:36,493 INFO L276 IsEmpty]: Start isEmpty. Operand 13443 states and 19261 transitions. [2022-07-13 20:54:36,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-07-13 20:54:36,496 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:54:36,496 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:54:36,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-13 20:54:36,496 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:54:36,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:54:36,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1773467421, now seen corresponding path program 1 times [2022-07-13 20:54:36,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:54:36,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009159937] [2022-07-13 20:54:36,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:54:36,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:54:36,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:54:36,530 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:54:36,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:54:36,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009159937] [2022-07-13 20:54:36,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009159937] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:54:36,531 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:54:36,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 20:54:36,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238521091] [2022-07-13 20:54:36,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:54:36,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 20:54:36,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:54:36,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 20:54:36,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 20:54:36,533 INFO L87 Difference]: Start difference. First operand 13443 states and 19261 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:54:36,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:54:36,950 INFO L93 Difference]: Finished difference Result 17503 states and 24983 transitions. [2022-07-13 20:54:36,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 20:54:36,951 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2022-07-13 20:54:36,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:54:36,960 INFO L225 Difference]: With dead ends: 17503 [2022-07-13 20:54:36,960 INFO L226 Difference]: Without dead ends: 9389 [2022-07-13 20:54:36,968 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 [2022-07-13 20:54:36,969 INFO L413 NwaCegarLoop]: 1587 mSDtfsCounter, 44 mSDsluCounter, 1529 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 3116 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:54:36,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 3116 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:54:36,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9389 states. [2022-07-13 20:54:37,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9389 to 9387. [2022-07-13 20:54:37,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9387 states, 9385 states have (on average 1.4372935535428877) internal successors, (13489), 9386 states have internal predecessors, (13489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:54:37,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9387 states to 9387 states and 13489 transitions. [2022-07-13 20:54:37,386 INFO L78 Accepts]: Start accepts. Automaton has 9387 states and 13489 transitions. Word has length 98 [2022-07-13 20:54:37,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:54:37,386 INFO L495 AbstractCegarLoop]: Abstraction has 9387 states and 13489 transitions. [2022-07-13 20:54:37,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:54:37,386 INFO L276 IsEmpty]: Start isEmpty. Operand 9387 states and 13489 transitions. [2022-07-13 20:54:37,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-07-13 20:54:37,388 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:54:37,388 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:54:37,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-13 20:54:37,388 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:54:37,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:54:37,389 INFO L85 PathProgramCache]: Analyzing trace with hash -934897581, now seen corresponding path program 1 times [2022-07-13 20:54:37,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:54:37,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383869768] [2022-07-13 20:54:37,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:54:37,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:54:37,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:54:37,424 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:54:37,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:54:37,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383869768] [2022-07-13 20:54:37,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383869768] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:54:37,425 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:54:37,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 20:54:37,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840786996] [2022-07-13 20:54:37,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:54:37,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 20:54:37,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:54:37,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 20:54:37,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 20:54:37,427 INFO L87 Difference]: Start difference. First operand 9387 states and 13489 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:54:37,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:54:37,750 INFO L93 Difference]: Finished difference Result 11419 states and 16325 transitions. [2022-07-13 20:54:37,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 20:54:37,750 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2022-07-13 20:54:37,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:54:37,758 INFO L225 Difference]: With dead ends: 11419 [2022-07-13 20:54:37,758 INFO L226 Difference]: Without dead ends: 7361 [2022-07-13 20:54:37,762 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 [2022-07-13 20:54:37,762 INFO L413 NwaCegarLoop]: 1580 mSDtfsCounter, 40 mSDsluCounter, 1521 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 3101 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:54:37,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 3101 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:54:37,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7361 states. [2022-07-13 20:54:38,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7361 to 7359. [2022-07-13 20:54:38,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7359 states, 7357 states have (on average 1.4447464999320374) internal successors, (10629), 7358 states have internal predecessors, (10629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:54:38,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7359 states to 7359 states and 10629 transitions. [2022-07-13 20:54:38,067 INFO L78 Accepts]: Start accepts. Automaton has 7359 states and 10629 transitions. Word has length 98 [2022-07-13 20:54:38,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:54:38,067 INFO L495 AbstractCegarLoop]: Abstraction has 7359 states and 10629 transitions. [2022-07-13 20:54:38,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:54:38,067 INFO L276 IsEmpty]: Start isEmpty. Operand 7359 states and 10629 transitions. [2022-07-13 20:54:38,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-07-13 20:54:38,069 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:54:38,069 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, 1, 1, 1] [2022-07-13 20:54:38,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-13 20:54:38,069 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:54:38,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:54:38,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1022016375, now seen corresponding path program 1 times [2022-07-13 20:54:38,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:54:38,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898688287] [2022-07-13 20:54:38,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:54:38,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:54:38,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:54:38,308 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:54:38,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:54:38,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898688287] [2022-07-13 20:54:38,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898688287] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 20:54:38,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881289622] [2022-07-13 20:54:38,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:54:38,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 20:54:38,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 20:54:38,310 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) [2022-07-13 20:54:38,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 20:54:38,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:54:38,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-13 20:54:38,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 20:54:38,846 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 20:54:38,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 20:54:39,059 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 20:54:39,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [881289622] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 20:54:39,060 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 20:54:39,060 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 4, 4] total 18 [2022-07-13 20:54:39,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372445771] [2022-07-13 20:54:39,061 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 20:54:39,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-13 20:54:39,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:54:39,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-13 20:54:39,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2022-07-13 20:54:39,062 INFO L87 Difference]: Start difference. First operand 7359 states and 10629 transitions. Second operand has 18 states, 18 states have (on average 15.38888888888889) internal successors, (277), 18 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:54:44,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:54:44,361 INFO L93 Difference]: Finished difference Result 32535 states and 44813 transitions. [2022-07-13 20:54:44,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-07-13 20:54:44,362 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 15.38888888888889) internal successors, (277), 18 states have internal predecessors, (277), 0 states have call successors, (0), 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 98 [2022-07-13 20:54:44,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:54:44,399 INFO L225 Difference]: With dead ends: 32535 [2022-07-13 20:54:44,399 INFO L226 Difference]: Without dead ends: 30505 [2022-07-13 20:54:44,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 191 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2232 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1175, Invalid=5467, Unknown=0, NotChecked=0, Total=6642 [2022-07-13 20:54:44,411 INFO L413 NwaCegarLoop]: 1574 mSDtfsCounter, 13988 mSDsluCounter, 5449 mSDsCounter, 0 mSdLazyCounter, 1162 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13988 SdHoareTripleChecker+Valid, 7023 SdHoareTripleChecker+Invalid, 1358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 1162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 20:54:44,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13988 Valid, 7023 Invalid, 1358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 1162 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 20:54:44,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30505 states. [2022-07-13 20:54:46,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30505 to 22606. [2022-07-13 20:54:46,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22606 states, 22604 states have (on average 1.3587860555653866) internal successors, (30714), 22605 states have internal predecessors, (30714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:54:46,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22606 states to 22606 states and 30714 transitions. [2022-07-13 20:54:46,394 INFO L78 Accepts]: Start accepts. Automaton has 22606 states and 30714 transitions. Word has length 98 [2022-07-13 20:54:46,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:54:46,395 INFO L495 AbstractCegarLoop]: Abstraction has 22606 states and 30714 transitions. [2022-07-13 20:54:46,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 15.38888888888889) internal successors, (277), 18 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:54:46,395 INFO L276 IsEmpty]: Start isEmpty. Operand 22606 states and 30714 transitions. [2022-07-13 20:54:46,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-07-13 20:54:46,396 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:54:46,397 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, 1, 1, 1, 1, 1] [2022-07-13 20:54:46,420 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-13 20:54:46,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-07-13 20:54:46,609 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:54:46,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:54:46,610 INFO L85 PathProgramCache]: Analyzing trace with hash -1244176043, now seen corresponding path program 1 times [2022-07-13 20:54:46,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:54:46,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800162826] [2022-07-13 20:54:46,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:54:46,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:54:46,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:54:46,814 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:54:46,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:54:46,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800162826] [2022-07-13 20:54:46,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800162826] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 20:54:46,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857520802] [2022-07-13 20:54:46,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:54:46,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 20:54:46,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 20:54:46,817 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 20:54:46,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 20:54:46,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:54:46,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-13 20:54:46,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 20:54:47,390 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:54:47,390 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 20:54:47,985 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:54:47,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1857520802] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 20:54:47,986 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 20:54:47,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 29 [2022-07-13 20:54:47,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418309202] [2022-07-13 20:54:47,986 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 20:54:47,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-07-13 20:54:47,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:54:47,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-07-13 20:54:47,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=758, Unknown=0, NotChecked=0, Total=870 [2022-07-13 20:54:47,988 INFO L87 Difference]: Start difference. First operand 22606 states and 30714 transitions. Second operand has 30 states, 30 states have (on average 8.433333333333334) internal successors, (253), 29 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:55:21,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:55:21,698 INFO L93 Difference]: Finished difference Result 233959 states and 306410 transitions. [2022-07-13 20:55:21,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2022-07-13 20:55:21,699 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 8.433333333333334) internal successors, (253), 29 states have internal predecessors, (253), 0 states have call successors, (0), 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 99 [2022-07-13 20:55:21,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:55:22,217 INFO L225 Difference]: With dead ends: 233959 [2022-07-13 20:55:22,218 INFO L226 Difference]: Without dead ends: 216960 [2022-07-13 20:55:22,285 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8067 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=3510, Invalid=19140, Unknown=0, NotChecked=0, Total=22650 [2022-07-13 20:55:22,286 INFO L413 NwaCegarLoop]: 1640 mSDtfsCounter, 22550 mSDsluCounter, 9377 mSDsCounter, 0 mSdLazyCounter, 2210 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22550 SdHoareTripleChecker+Valid, 11017 SdHoareTripleChecker+Invalid, 2409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 2210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-13 20:55:22,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22550 Valid, 11017 Invalid, 2409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 2210 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-13 20:55:22,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216960 states.