./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pals_lcr.4.1.ufo.UNBOUNDED.pals+Problem12_label09.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/pals_lcr.4.1.ufo.UNBOUNDED.pals+Problem12_label09.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 8852f5d85d99e238ddb4939d2a61f2cf9e42dc8f549b5b69b60dfda9c1201f88 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 09:07:18,577 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 09:07:18,579 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 09:07:18,611 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 09:07:18,611 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 09:07:18,612 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 09:07:18,613 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 09:07:18,614 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 09:07:18,615 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 09:07:18,616 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 09:07:18,617 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 09:07:18,617 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 09:07:18,618 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 09:07:18,618 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 09:07:18,619 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 09:07:18,620 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 09:07:18,621 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 09:07:18,625 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 09:07:18,626 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 09:07:18,630 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 09:07:18,631 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 09:07:18,631 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 09:07:18,632 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 09:07:18,633 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 09:07:18,633 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 09:07:18,635 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 09:07:18,635 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 09:07:18,635 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 09:07:18,636 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 09:07:18,636 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 09:07:18,637 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 09:07:18,637 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 09:07:18,638 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 09:07:18,638 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 09:07:18,639 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 09:07:18,639 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 09:07:18,639 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 09:07:18,640 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 09:07:18,640 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 09:07:18,640 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 09:07:18,641 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 09:07:18,641 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 09:07:18,642 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 09:07:18,656 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 09:07:18,656 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 09:07:18,657 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 09:07:18,657 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 09:07:18,657 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 09:07:18,658 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 09:07:18,658 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 09:07:18,658 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 09:07:18,658 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 09:07:18,658 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 09:07:18,659 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 09:07:18,659 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 09:07:18,659 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 09:07:18,659 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 09:07:18,659 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 09:07:18,659 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 09:07:18,660 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 09:07:18,660 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 09:07:18,660 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 09:07:18,660 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 09:07:18,660 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 09:07:18,660 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 09:07:18,661 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 09:07:18,661 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 09:07:18,661 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 09:07:18,661 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 09:07:18,661 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 09:07:18,661 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 09:07:18,661 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 09:07:18,662 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 09:07:18,662 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 09:07:18,662 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 09:07:18,662 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 09:07:18,662 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8852f5d85d99e238ddb4939d2a61f2cf9e42dc8f549b5b69b60dfda9c1201f88 [2022-07-12 09:07:18,831 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 09:07:18,849 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 09:07:18,852 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 09:07:18,852 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 09:07:18,853 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 09:07:18,854 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pals_lcr.4.1.ufo.UNBOUNDED.pals+Problem12_label09.c [2022-07-12 09:07:18,900 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd1edfd83/59eb281dce3d481bbfae9fc54d787ea5/FLAGdfe3158a9 [2022-07-12 09:07:19,401 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 09:07:19,401 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.4.1.ufo.UNBOUNDED.pals+Problem12_label09.c [2022-07-12 09:07:19,431 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd1edfd83/59eb281dce3d481bbfae9fc54d787ea5/FLAGdfe3158a9 [2022-07-12 09:07:19,642 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd1edfd83/59eb281dce3d481bbfae9fc54d787ea5 [2022-07-12 09:07:19,644 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 09:07:19,645 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 09:07:19,646 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 09:07:19,646 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 09:07:19,648 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 09:07:19,649 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 09:07:19" (1/1) ... [2022-07-12 09:07:19,649 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a6bb65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:07:19, skipping insertion in model container [2022-07-12 09:07:19,649 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 09:07:19" (1/1) ... [2022-07-12 09:07:19,654 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 09:07:19,739 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 09:07:20,056 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.4.1.ufo.UNBOUNDED.pals+Problem12_label09.c[8749,8762] [2022-07-12 09:07:20,123 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.4.1.ufo.UNBOUNDED.pals+Problem12_label09.c[16497,16510] [2022-07-12 09:07:20,573 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 09:07:20,583 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 09:07:20,603 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.4.1.ufo.UNBOUNDED.pals+Problem12_label09.c[8749,8762] [2022-07-12 09:07:20,610 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.4.1.ufo.UNBOUNDED.pals+Problem12_label09.c[16497,16510] [2022-07-12 09:07:20,874 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 09:07:20,892 INFO L208 MainTranslator]: Completed translation [2022-07-12 09:07:20,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:07:20 WrapperNode [2022-07-12 09:07:20,893 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 09:07:20,894 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 09:07:20,894 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 09:07:20,894 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 09:07:20,898 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:07:20" (1/1) ... [2022-07-12 09:07:20,952 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:07:20" (1/1) ... [2022-07-12 09:07:21,262 INFO L137 Inliner]: procedures = 36, calls = 21, calls flagged for inlining = 16, calls inlined = 16, statements flattened = 5032 [2022-07-12 09:07:21,262 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 09:07:21,263 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 09:07:21,263 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 09:07:21,263 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 09:07:21,270 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:07:20" (1/1) ... [2022-07-12 09:07:21,270 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:07:20" (1/1) ... [2022-07-12 09:07:21,303 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:07:20" (1/1) ... [2022-07-12 09:07:21,306 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:07:20" (1/1) ... [2022-07-12 09:07:21,384 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:07:20" (1/1) ... [2022-07-12 09:07:21,408 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:07:20" (1/1) ... [2022-07-12 09:07:21,424 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:07:20" (1/1) ... [2022-07-12 09:07:21,526 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 09:07:21,529 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 09:07:21,529 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 09:07:21,529 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 09:07:21,531 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:07:20" (1/1) ... [2022-07-12 09:07:21,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 09:07:21,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:07:21,555 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 09:07:21,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 09:07:21,620 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 09:07:21,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 09:07:21,621 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 09:07:21,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 09:07:21,764 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 09:07:21,765 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 09:07:24,486 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 09:07:24,500 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 09:07:24,500 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-12 09:07:24,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 09:07:24 BoogieIcfgContainer [2022-07-12 09:07:24,503 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 09:07:24,505 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 09:07:24,505 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 09:07:24,507 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 09:07:24,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 09:07:19" (1/3) ... [2022-07-12 09:07:24,508 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a3d10fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 09:07:24, skipping insertion in model container [2022-07-12 09:07:24,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:07:20" (2/3) ... [2022-07-12 09:07:24,508 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a3d10fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 09:07:24, skipping insertion in model container [2022-07-12 09:07:24,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 09:07:24" (3/3) ... [2022-07-12 09:07:24,510 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.1.ufo.UNBOUNDED.pals+Problem12_label09.c [2022-07-12 09:07:24,519 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 09:07:24,519 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-12 09:07:24,576 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 09:07:24,581 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@7aeb9467, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@e304ca5 [2022-07-12 09:07:24,582 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-12 09:07:24,593 INFO L276 IsEmpty]: Start isEmpty. Operand has 895 states, 892 states have (on average 1.9013452914798206) internal successors, (1696), 894 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:07:24,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-07-12 09:07:24,603 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:07:24,604 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] [2022-07-12 09:07:24,604 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:07:24,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:07:24,608 INFO L85 PathProgramCache]: Analyzing trace with hash 2085104645, now seen corresponding path program 1 times [2022-07-12 09:07:24,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:07:24,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22661075] [2022-07-12 09:07:24,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:07:24,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:07:24,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:07:24,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:07:24,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:07:24,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22661075] [2022-07-12 09:07:24,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22661075] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:07:24,763 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:07:24,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 09:07:24,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213441772] [2022-07-12 09:07:24,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:07:24,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-12 09:07:24,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:07:24,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-12 09:07:24,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 09:07:24,795 INFO L87 Difference]: Start difference. First operand has 895 states, 892 states have (on average 1.9013452914798206) internal successors, (1696), 894 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:07:24,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:07:24,843 INFO L93 Difference]: Finished difference Result 1759 states and 3336 transitions. [2022-07-12 09:07:24,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-12 09:07:24,853 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2022-07-12 09:07:24,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:07:24,865 INFO L225 Difference]: With dead ends: 1759 [2022-07-12 09:07:24,870 INFO L226 Difference]: Without dead ends: 829 [2022-07-12 09:07:24,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 09:07:24,877 INFO L413 NwaCegarLoop]: 1627 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1627 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:07:24,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1627 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:07:24,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 829 states. [2022-07-12 09:07:24,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 829 to 829. [2022-07-12 09:07:24,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 829 states, 827 states have (on average 1.8899637243047158) internal successors, (1563), 828 states have internal predecessors, (1563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:07:24,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 829 states to 829 states and 1563 transitions. [2022-07-12 09:07:24,942 INFO L78 Accepts]: Start accepts. Automaton has 829 states and 1563 transitions. Word has length 30 [2022-07-12 09:07:24,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:07:24,943 INFO L495 AbstractCegarLoop]: Abstraction has 829 states and 1563 transitions. [2022-07-12 09:07:24,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:07:24,943 INFO L276 IsEmpty]: Start isEmpty. Operand 829 states and 1563 transitions. [2022-07-12 09:07:24,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-07-12 09:07:24,945 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:07:24,945 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] [2022-07-12 09:07:24,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 09:07:24,945 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:07:24,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:07:24,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1951091139, now seen corresponding path program 1 times [2022-07-12 09:07:24,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:07:24,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28115948] [2022-07-12 09:07:24,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:07:24,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:07:24,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:07:25,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:07:25,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:07:25,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28115948] [2022-07-12 09:07:25,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28115948] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:07:25,030 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:07:25,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 09:07:25,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482543611] [2022-07-12 09:07:25,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:07:25,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 09:07:25,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:07:25,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 09:07:25,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 09:07:25,037 INFO L87 Difference]: Start difference. First operand 829 states and 1563 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:07:25,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:07:25,174 INFO L93 Difference]: Finished difference Result 879 states and 1639 transitions. [2022-07-12 09:07:25,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 09:07:25,175 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2022-07-12 09:07:25,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:07:25,178 INFO L225 Difference]: With dead ends: 879 [2022-07-12 09:07:25,180 INFO L226 Difference]: Without dead ends: 829 [2022-07-12 09:07:25,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:07:25,182 INFO L413 NwaCegarLoop]: 1561 mSDtfsCounter, 3 mSDsluCounter, 4657 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6218 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:07:25,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6218 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:07:25,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 829 states. [2022-07-12 09:07:25,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 829 to 829. [2022-07-12 09:07:25,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 829 states, 827 states have (on average 1.8621523579201935) internal successors, (1540), 828 states have internal predecessors, (1540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:07:25,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 829 states to 829 states and 1540 transitions. [2022-07-12 09:07:25,205 INFO L78 Accepts]: Start accepts. Automaton has 829 states and 1540 transitions. Word has length 30 [2022-07-12 09:07:25,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:07:25,205 INFO L495 AbstractCegarLoop]: Abstraction has 829 states and 1540 transitions. [2022-07-12 09:07:25,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:07:25,206 INFO L276 IsEmpty]: Start isEmpty. Operand 829 states and 1540 transitions. [2022-07-12 09:07:25,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-07-12 09:07:25,213 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:07:25,213 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] [2022-07-12 09:07:25,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 09:07:25,214 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:07:25,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:07:25,220 INFO L85 PathProgramCache]: Analyzing trace with hash 568524862, now seen corresponding path program 1 times [2022-07-12 09:07:25,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:07:25,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701544712] [2022-07-12 09:07:25,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:07:25,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:07:25,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:07:25,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:07:25,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:07:25,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701544712] [2022-07-12 09:07:25,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701544712] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:07:25,339 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:07:25,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 09:07:25,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716435569] [2022-07-12 09:07:25,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:07:25,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 09:07:25,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:07:25,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 09:07:25,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 09:07:25,341 INFO L87 Difference]: Start difference. First operand 829 states and 1540 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:07:25,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:07:25,464 INFO L93 Difference]: Finished difference Result 1197 states and 2116 transitions. [2022-07-12 09:07:25,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 09:07:25,464 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2022-07-12 09:07:25,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:07:25,468 INFO L225 Difference]: With dead ends: 1197 [2022-07-12 09:07:25,468 INFO L226 Difference]: Without dead ends: 1151 [2022-07-12 09:07:25,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:07:25,474 INFO L413 NwaCegarLoop]: 1534 mSDtfsCounter, 6574 mSDsluCounter, 544 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6574 SdHoareTripleChecker+Valid, 2078 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 09:07:25,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6574 Valid, 2078 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 09:07:25,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1151 states. [2022-07-12 09:07:25,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1151 to 873. [2022-07-12 09:07:25,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 873 states, 871 states have (on average 1.8473019517795637) internal successors, (1609), 872 states have internal predecessors, (1609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:07:25,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1609 transitions. [2022-07-12 09:07:25,491 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1609 transitions. Word has length 52 [2022-07-12 09:07:25,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:07:25,492 INFO L495 AbstractCegarLoop]: Abstraction has 873 states and 1609 transitions. [2022-07-12 09:07:25,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:07:25,492 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1609 transitions. [2022-07-12 09:07:25,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-07-12 09:07:25,494 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:07:25,494 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] [2022-07-12 09:07:25,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 09:07:25,494 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:07:25,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:07:25,495 INFO L85 PathProgramCache]: Analyzing trace with hash -524152242, now seen corresponding path program 1 times [2022-07-12 09:07:25,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:07:25,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527293628] [2022-07-12 09:07:25,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:07:25,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:07:25,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:07:25,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:07:25,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:07:25,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527293628] [2022-07-12 09:07:25,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527293628] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:07:25,540 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:07:25,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 09:07:25,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739121813] [2022-07-12 09:07:25,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:07:25,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:07:25,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:07:25,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:07:25,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:07:25,541 INFO L87 Difference]: Start difference. First operand 873 states and 1609 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:07:25,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:07:25,588 INFO L93 Difference]: Finished difference Result 1042 states and 1872 transitions. [2022-07-12 09:07:25,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:07:25,590 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2022-07-12 09:07:25,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:07:25,593 INFO L225 Difference]: With dead ends: 1042 [2022-07-12 09:07:25,593 INFO L226 Difference]: Without dead ends: 952 [2022-07-12 09:07:25,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:07:25,594 INFO L413 NwaCegarLoop]: 1536 mSDtfsCounter, 1480 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1480 SdHoareTripleChecker+Valid, 1601 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 [2022-07-12 09:07:25,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1480 Valid, 1601 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:07:25,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 952 states. [2022-07-12 09:07:25,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 952 to 948. [2022-07-12 09:07:25,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 948 states, 946 states have (on average 1.8213530655391121) internal successors, (1723), 947 states have internal predecessors, (1723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:07:25,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 948 states to 948 states and 1723 transitions. [2022-07-12 09:07:25,612 INFO L78 Accepts]: Start accepts. Automaton has 948 states and 1723 transitions. Word has length 54 [2022-07-12 09:07:25,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:07:25,612 INFO L495 AbstractCegarLoop]: Abstraction has 948 states and 1723 transitions. [2022-07-12 09:07:25,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:07:25,613 INFO L276 IsEmpty]: Start isEmpty. Operand 948 states and 1723 transitions. [2022-07-12 09:07:25,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-07-12 09:07:25,613 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:07:25,614 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] [2022-07-12 09:07:25,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 09:07:25,614 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:07:25,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:07:25,614 INFO L85 PathProgramCache]: Analyzing trace with hash -457658730, now seen corresponding path program 1 times [2022-07-12 09:07:25,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:07:25,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922350095] [2022-07-12 09:07:25,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:07:25,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:07:25,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:07:25,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:07:25,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:07:25,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922350095] [2022-07-12 09:07:25,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922350095] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:07:25,706 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:07:25,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 09:07:25,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370793475] [2022-07-12 09:07:25,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:07:25,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 09:07:25,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:07:25,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 09:07:25,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-12 09:07:25,708 INFO L87 Difference]: Start difference. First operand 948 states and 1723 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:07:25,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:07:25,809 INFO L93 Difference]: Finished difference Result 1115 states and 1979 transitions. [2022-07-12 09:07:25,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 09:07:25,809 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2022-07-12 09:07:25,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:07:25,812 INFO L225 Difference]: With dead ends: 1115 [2022-07-12 09:07:25,812 INFO L226 Difference]: Without dead ends: 950 [2022-07-12 09:07:25,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:07:25,813 INFO L413 NwaCegarLoop]: 1540 mSDtfsCounter, 6048 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6048 SdHoareTripleChecker+Valid, 1744 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:07:25,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6048 Valid, 1744 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:07:25,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 950 states. [2022-07-12 09:07:25,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 950 to 948. [2022-07-12 09:07:25,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 948 states, 946 states have (on average 1.8192389006342495) internal successors, (1721), 947 states have internal predecessors, (1721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:07:25,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 948 states to 948 states and 1721 transitions. [2022-07-12 09:07:25,831 INFO L78 Accepts]: Start accepts. Automaton has 948 states and 1721 transitions. Word has length 54 [2022-07-12 09:07:25,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:07:25,831 INFO L495 AbstractCegarLoop]: Abstraction has 948 states and 1721 transitions. [2022-07-12 09:07:25,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:07:25,831 INFO L276 IsEmpty]: Start isEmpty. Operand 948 states and 1721 transitions. [2022-07-12 09:07:25,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-07-12 09:07:25,832 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:07:25,832 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] [2022-07-12 09:07:25,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 09:07:25,833 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:07:25,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:07:25,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1331255346, now seen corresponding path program 1 times [2022-07-12 09:07:25,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:07:25,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534331240] [2022-07-12 09:07:25,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:07:25,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:07:25,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:07:25,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:07:25,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:07:25,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534331240] [2022-07-12 09:07:25,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534331240] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:07:25,880 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:07:25,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 09:07:25,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441046404] [2022-07-12 09:07:25,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:07:25,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:07:25,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:07:25,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:07:25,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:07:25,882 INFO L87 Difference]: Start difference. First operand 948 states and 1721 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:07:25,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:07:25,909 INFO L93 Difference]: Finished difference Result 1254 states and 2187 transitions. [2022-07-12 09:07:25,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:07:25,910 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2022-07-12 09:07:25,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:07:25,914 INFO L225 Difference]: With dead ends: 1254 [2022-07-12 09:07:25,914 INFO L226 Difference]: Without dead ends: 1089 [2022-07-12 09:07:25,915 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:07:25,917 INFO L413 NwaCegarLoop]: 1557 mSDtfsCounter, 1489 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1489 SdHoareTripleChecker+Valid, 1639 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:07:25,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1489 Valid, 1639 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:07:25,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1089 states. [2022-07-12 09:07:25,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1089 to 1087. [2022-07-12 09:07:25,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1087 states, 1085 states have (on average 1.7778801843317973) internal successors, (1929), 1086 states have internal predecessors, (1929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:07:25,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 1929 transitions. [2022-07-12 09:07:25,942 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 1929 transitions. Word has length 54 [2022-07-12 09:07:25,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:07:25,942 INFO L495 AbstractCegarLoop]: Abstraction has 1087 states and 1929 transitions. [2022-07-12 09:07:25,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:07:25,943 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 1929 transitions. [2022-07-12 09:07:25,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-07-12 09:07:25,943 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:07:25,943 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] [2022-07-12 09:07:25,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 09:07:25,944 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:07:25,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:07:25,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1716204334, now seen corresponding path program 1 times [2022-07-12 09:07:25,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:07:25,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568096296] [2022-07-12 09:07:25,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:07:25,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:07:25,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:07:25,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:07:25,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:07:25,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568096296] [2022-07-12 09:07:25,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568096296] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:07:25,988 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:07:25,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 09:07:25,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026374914] [2022-07-12 09:07:25,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:07:25,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:07:25,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:07:25,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:07:25,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:07:25,990 INFO L87 Difference]: Start difference. First operand 1087 states and 1929 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:07:26,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:07:26,024 INFO L93 Difference]: Finished difference Result 1647 states and 2771 transitions. [2022-07-12 09:07:26,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:07:26,024 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2022-07-12 09:07:26,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:07:26,028 INFO L225 Difference]: With dead ends: 1647 [2022-07-12 09:07:26,028 INFO L226 Difference]: Without dead ends: 1343 [2022-07-12 09:07:26,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:07:26,029 INFO L413 NwaCegarLoop]: 1570 mSDtfsCounter, 1493 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1493 SdHoareTripleChecker+Valid, 1648 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:07:26,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1493 Valid, 1648 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:07:26,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1343 states. [2022-07-12 09:07:26,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1343 to 1341. [2022-07-12 09:07:26,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1341 states, 1339 states have (on average 1.7184466019417475) internal successors, (2301), 1340 states have internal predecessors, (2301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:07:26,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1341 states to 1341 states and 2301 transitions. [2022-07-12 09:07:26,062 INFO L78 Accepts]: Start accepts. Automaton has 1341 states and 2301 transitions. Word has length 54 [2022-07-12 09:07:26,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:07:26,062 INFO L495 AbstractCegarLoop]: Abstraction has 1341 states and 2301 transitions. [2022-07-12 09:07:26,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:07:26,063 INFO L276 IsEmpty]: Start isEmpty. Operand 1341 states and 2301 transitions. [2022-07-12 09:07:26,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-07-12 09:07:26,063 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:07:26,063 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] [2022-07-12 09:07:26,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 09:07:26,064 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:07:26,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:07:26,064 INFO L85 PathProgramCache]: Analyzing trace with hash -1442516622, now seen corresponding path program 1 times [2022-07-12 09:07:26,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:07:26,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681058230] [2022-07-12 09:07:26,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:07:26,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:07:26,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:07:26,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:07:26,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:07:26,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681058230] [2022-07-12 09:07:26,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681058230] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:07:26,107 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:07:26,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 09:07:26,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356953455] [2022-07-12 09:07:26,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:07:26,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:07:26,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:07:26,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:07:26,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:07:26,108 INFO L87 Difference]: Start difference. First operand 1341 states and 2301 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:07:26,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:07:26,156 INFO L93 Difference]: Finished difference Result 2361 states and 3807 transitions. [2022-07-12 09:07:26,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:07:26,157 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2022-07-12 09:07:26,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:07:26,162 INFO L225 Difference]: With dead ends: 2361 [2022-07-12 09:07:26,162 INFO L226 Difference]: Without dead ends: 1803 [2022-07-12 09:07:26,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:07:26,163 INFO L413 NwaCegarLoop]: 1583 mSDtfsCounter, 1497 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1497 SdHoareTripleChecker+Valid, 1657 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:07:26,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1497 Valid, 1657 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:07:26,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1803 states. [2022-07-12 09:07:26,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1803 to 1801. [2022-07-12 09:07:26,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1801 states, 1799 states have (on average 1.6436909394107837) internal successors, (2957), 1800 states have internal predecessors, (2957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:07:26,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1801 states to 1801 states and 2957 transitions. [2022-07-12 09:07:26,218 INFO L78 Accepts]: Start accepts. Automaton has 1801 states and 2957 transitions. Word has length 54 [2022-07-12 09:07:26,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:07:26,218 INFO L495 AbstractCegarLoop]: Abstraction has 1801 states and 2957 transitions. [2022-07-12 09:07:26,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:07:26,218 INFO L276 IsEmpty]: Start isEmpty. Operand 1801 states and 2957 transitions. [2022-07-12 09:07:26,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-07-12 09:07:26,219 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:07:26,219 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] [2022-07-12 09:07:26,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 09:07:26,219 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:07:26,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:07:26,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1717241860, now seen corresponding path program 1 times [2022-07-12 09:07:26,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:07:26,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640821534] [2022-07-12 09:07:26,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:07:26,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:07:26,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:07:26,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:07:26,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:07:26,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640821534] [2022-07-12 09:07:26,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640821534] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:07:26,294 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:07:26,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 09:07:26,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764360977] [2022-07-12 09:07:26,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:07:26,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 09:07:26,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:07:26,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 09:07:26,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:07:26,296 INFO L87 Difference]: Start difference. First operand 1801 states and 2957 transitions. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:07:26,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:07:26,490 INFO L93 Difference]: Finished difference Result 2571 states and 4058 transitions. [2022-07-12 09:07:26,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 09:07:26,491 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2022-07-12 09:07:26,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:07:26,499 INFO L225 Difference]: With dead ends: 2571 [2022-07-12 09:07:26,499 INFO L226 Difference]: Without dead ends: 2569 [2022-07-12 09:07:26,500 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-07-12 09:07:26,502 INFO L413 NwaCegarLoop]: 1577 mSDtfsCounter, 498 mSDsluCounter, 9002 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 498 SdHoareTripleChecker+Valid, 10579 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:07:26,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [498 Valid, 10579 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:07:26,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2569 states. [2022-07-12 09:07:26,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2569 to 1849. [2022-07-12 09:07:26,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1849 states, 1847 states have (on average 1.6226312939902545) internal successors, (2997), 1848 states have internal predecessors, (2997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:07:26,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1849 states to 1849 states and 2997 transitions. [2022-07-12 09:07:26,570 INFO L78 Accepts]: Start accepts. Automaton has 1849 states and 2997 transitions. Word has length 55 [2022-07-12 09:07:26,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:07:26,570 INFO L495 AbstractCegarLoop]: Abstraction has 1849 states and 2997 transitions. [2022-07-12 09:07:26,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:07:26,571 INFO L276 IsEmpty]: Start isEmpty. Operand 1849 states and 2997 transitions. [2022-07-12 09:07:26,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-07-12 09:07:26,571 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:07:26,571 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] [2022-07-12 09:07:26,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 09:07:26,572 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:07:26,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:07:26,572 INFO L85 PathProgramCache]: Analyzing trace with hash -754642547, now seen corresponding path program 1 times [2022-07-12 09:07:26,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:07:26,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263375839] [2022-07-12 09:07:26,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:07:26,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:07:26,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:07:26,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:07:26,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:07:26,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263375839] [2022-07-12 09:07:26,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263375839] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:07:26,592 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:07:26,592 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 09:07:26,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940686623] [2022-07-12 09:07:26,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:07:26,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:07:26,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:07:26,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:07:26,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:07:26,593 INFO L87 Difference]: Start difference. First operand 1849 states and 2997 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:07:26,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:07:26,667 INFO L93 Difference]: Finished difference Result 2944 states and 4587 transitions. [2022-07-12 09:07:26,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:07:26,667 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2022-07-12 09:07:26,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:07:26,673 INFO L225 Difference]: With dead ends: 2944 [2022-07-12 09:07:26,673 INFO L226 Difference]: Without dead ends: 2333 [2022-07-12 09:07:26,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:07:26,675 INFO L413 NwaCegarLoop]: 1591 mSDtfsCounter, 1498 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1498 SdHoareTripleChecker+Valid, 1661 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:07:26,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1498 Valid, 1661 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:07:26,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2333 states. [2022-07-12 09:07:26,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2333 to 2331. [2022-07-12 09:07:26,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2331 states, 2329 states have (on average 1.5762129669386002) internal successors, (3671), 2330 states have internal predecessors, (3671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:07:26,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2331 states to 2331 states and 3671 transitions. [2022-07-12 09:07:26,756 INFO L78 Accepts]: Start accepts. Automaton has 2331 states and 3671 transitions. Word has length 56 [2022-07-12 09:07:26,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:07:26,757 INFO L495 AbstractCegarLoop]: Abstraction has 2331 states and 3671 transitions. [2022-07-12 09:07:26,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:07:26,757 INFO L276 IsEmpty]: Start isEmpty. Operand 2331 states and 3671 transitions. [2022-07-12 09:07:26,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-12 09:07:26,757 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:07:26,758 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:07:26,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 09:07:26,758 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:07:26,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:07:26,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1392228915, now seen corresponding path program 1 times [2022-07-12 09:07:26,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:07:26,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509562443] [2022-07-12 09:07:26,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:07:26,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:07:26,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:07:26,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:07:26,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:07:26,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509562443] [2022-07-12 09:07:26,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509562443] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:07:26,798 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:07:26,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 09:07:26,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555224497] [2022-07-12 09:07:26,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:07:26,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 09:07:26,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:07:26,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 09:07:26,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 09:07:26,799 INFO L87 Difference]: Start difference. First operand 2331 states and 3671 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:07:31,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:07:31,567 INFO L93 Difference]: Finished difference Result 4586 states and 7980 transitions. [2022-07-12 09:07:31,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 09:07:31,567 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-07-12 09:07:31,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:07:31,595 INFO L225 Difference]: With dead ends: 4586 [2022-07-12 09:07:31,607 INFO L226 Difference]: Without dead ends: 3833 [2022-07-12 09:07:31,609 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 [2022-07-12 09:07:31,609 INFO L413 NwaCegarLoop]: 776 mSDtfsCounter, 2373 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5354 mSolverCounterSat, 1161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2373 SdHoareTripleChecker+Valid, 794 SdHoareTripleChecker+Invalid, 6515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1161 IncrementalHoareTripleChecker+Valid, 5354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-07-12 09:07:31,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2373 Valid, 794 Invalid, 6515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1161 Valid, 5354 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-07-12 09:07:31,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3833 states. [2022-07-12 09:07:31,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3833 to 3833. [2022-07-12 09:07:31,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3833 states, 3831 states have (on average 1.5100495954058992) internal successors, (5785), 3832 states have internal predecessors, (5785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:07:31,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3833 states to 3833 states and 5785 transitions. [2022-07-12 09:07:31,742 INFO L78 Accepts]: Start accepts. Automaton has 3833 states and 5785 transitions. Word has length 67 [2022-07-12 09:07:31,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:07:31,742 INFO L495 AbstractCegarLoop]: Abstraction has 3833 states and 5785 transitions. [2022-07-12 09:07:31,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:07:31,742 INFO L276 IsEmpty]: Start isEmpty. Operand 3833 states and 5785 transitions. [2022-07-12 09:07:31,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-12 09:07:31,746 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:07:31,746 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-12 09:07:31,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 09:07:31,747 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:07:31,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:07:31,747 INFO L85 PathProgramCache]: Analyzing trace with hash 457839235, now seen corresponding path program 1 times [2022-07-12 09:07:31,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:07:31,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12033253] [2022-07-12 09:07:31,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:07:31,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:07:31,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:07:31,798 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-12 09:07:31,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:07:31,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12033253] [2022-07-12 09:07:31,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12033253] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:07:31,799 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:07:31,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 09:07:31,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492684373] [2022-07-12 09:07:31,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:07:31,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 09:07:31,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:07:31,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 09:07:31,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 09:07:31,800 INFO L87 Difference]: Start difference. First operand 3833 states and 5785 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:07:32,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:07:32,256 INFO L93 Difference]: Finished difference Result 10339 states and 15026 transitions. [2022-07-12 09:07:32,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 09:07:32,257 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 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 79 [2022-07-12 09:07:32,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:07:32,287 INFO L225 Difference]: With dead ends: 10339 [2022-07-12 09:07:32,287 INFO L226 Difference]: Without dead ends: 8793 [2022-07-12 09:07:32,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-12 09:07:32,291 INFO L413 NwaCegarLoop]: 1601 mSDtfsCounter, 4794 mSDsluCounter, 1759 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4794 SdHoareTripleChecker+Valid, 3360 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:07:32,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4794 Valid, 3360 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:07:32,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8793 states. [2022-07-12 09:07:32,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8793 to 5377. [2022-07-12 09:07:32,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5377 states, 5375 states have (on average 1.4811162790697674) internal successors, (7961), 5376 states have internal predecessors, (7961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:07:32,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5377 states to 5377 states and 7961 transitions. [2022-07-12 09:07:32,517 INFO L78 Accepts]: Start accepts. Automaton has 5377 states and 7961 transitions. Word has length 79 [2022-07-12 09:07:32,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:07:32,517 INFO L495 AbstractCegarLoop]: Abstraction has 5377 states and 7961 transitions. [2022-07-12 09:07:32,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:07:32,518 INFO L276 IsEmpty]: Start isEmpty. Operand 5377 states and 7961 transitions. [2022-07-12 09:07:32,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-12 09:07:32,519 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:07:32,519 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-12 09:07:32,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-12 09:07:32,519 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:07:32,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:07:32,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1705346851, now seen corresponding path program 1 times [2022-07-12 09:07:32,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:07:32,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849823001] [2022-07-12 09:07:32,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:07:32,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:07:32,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:07:32,573 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-12 09:07:32,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:07:32,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849823001] [2022-07-12 09:07:32,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849823001] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:07:32,574 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:07:32,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 09:07:32,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529050452] [2022-07-12 09:07:32,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:07:32,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 09:07:32,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:07:32,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 09:07:32,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 09:07:32,575 INFO L87 Difference]: Start difference. First operand 5377 states and 7961 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:07:33,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:07:33,057 INFO L93 Difference]: Finished difference Result 11883 states and 17202 transitions. [2022-07-12 09:07:33,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 09:07:33,067 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 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 79 [2022-07-12 09:07:33,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:07:33,082 INFO L225 Difference]: With dead ends: 11883 [2022-07-12 09:07:33,082 INFO L226 Difference]: Without dead ends: 10337 [2022-07-12 09:07:33,086 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-12 09:07:33,087 INFO L413 NwaCegarLoop]: 1603 mSDtfsCounter, 4743 mSDsluCounter, 1799 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4743 SdHoareTripleChecker+Valid, 3402 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:07:33,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4743 Valid, 3402 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:07:33,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10337 states. [2022-07-12 09:07:33,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10337 to 7697. [2022-07-12 09:07:33,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7697 states, 7695 states have (on average 1.456140350877193) internal successors, (11205), 7696 states have internal predecessors, (11205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:07:33,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7697 states to 7697 states and 11205 transitions. [2022-07-12 09:07:33,477 INFO L78 Accepts]: Start accepts. Automaton has 7697 states and 11205 transitions. Word has length 79 [2022-07-12 09:07:33,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:07:33,477 INFO L495 AbstractCegarLoop]: Abstraction has 7697 states and 11205 transitions. [2022-07-12 09:07:33,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:07:33,478 INFO L276 IsEmpty]: Start isEmpty. Operand 7697 states and 11205 transitions. [2022-07-12 09:07:33,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-12 09:07:33,479 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:07:33,479 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-12 09:07:33,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-12 09:07:33,480 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:07:33,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:07:33,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1979034563, now seen corresponding path program 1 times [2022-07-12 09:07:33,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:07:33,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608585208] [2022-07-12 09:07:33,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:07:33,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:07:33,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:07:33,524 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-12 09:07:33,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:07:33,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608585208] [2022-07-12 09:07:33,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608585208] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:07:33,525 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:07:33,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 09:07:33,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700688985] [2022-07-12 09:07:33,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:07:33,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 09:07:33,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:07:33,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 09:07:33,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 09:07:33,526 INFO L87 Difference]: Start difference. First operand 7697 states and 11205 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:07:34,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:07:34,082 INFO L93 Difference]: Finished difference Result 13427 states and 19378 transitions. [2022-07-12 09:07:34,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 09:07:34,083 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 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 79 [2022-07-12 09:07:34,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:07:34,097 INFO L225 Difference]: With dead ends: 13427 [2022-07-12 09:07:34,097 INFO L226 Difference]: Without dead ends: 11881 [2022-07-12 09:07:34,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-12 09:07:34,100 INFO L413 NwaCegarLoop]: 1601 mSDtfsCounter, 4774 mSDsluCounter, 1793 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4774 SdHoareTripleChecker+Valid, 3394 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:07:34,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4774 Valid, 3394 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:07:34,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11881 states. [2022-07-12 09:07:34,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11881 to 9241. [2022-07-12 09:07:34,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9241 states, 9239 states have (on average 1.4483169174153048) internal successors, (13381), 9240 states have internal predecessors, (13381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:07:34,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9241 states to 9241 states and 13381 transitions. [2022-07-12 09:07:34,579 INFO L78 Accepts]: Start accepts. Automaton has 9241 states and 13381 transitions. Word has length 79 [2022-07-12 09:07:34,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:07:34,580 INFO L495 AbstractCegarLoop]: Abstraction has 9241 states and 13381 transitions. [2022-07-12 09:07:34,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:07:34,580 INFO L276 IsEmpty]: Start isEmpty. Operand 9241 states and 13381 transitions. [2022-07-12 09:07:34,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-07-12 09:07:34,582 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:07:34,582 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] [2022-07-12 09:07:34,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-12 09:07:34,582 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:07:34,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:07:34,583 INFO L85 PathProgramCache]: Analyzing trace with hash 547636123, now seen corresponding path program 1 times [2022-07-12 09:07:34,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:07:34,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381547922] [2022-07-12 09:07:34,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:07:34,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:07:34,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:07:34,608 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:07:34,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:07:34,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381547922] [2022-07-12 09:07:34,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381547922] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:07:34,609 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:07:34,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 09:07:34,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843988638] [2022-07-12 09:07:34,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:07:34,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:07:34,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:07:34,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:07:34,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:07:34,611 INFO L87 Difference]: Start difference. First operand 9241 states and 13381 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:07:34,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:07:34,926 INFO L93 Difference]: Finished difference Result 14167 states and 20398 transitions. [2022-07-12 09:07:34,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:07:34,926 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2022-07-12 09:07:34,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:07:34,936 INFO L225 Difference]: With dead ends: 14167 [2022-07-12 09:07:34,936 INFO L226 Difference]: Without dead ends: 7213 [2022-07-12 09:07:34,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:07:34,943 INFO L413 NwaCegarLoop]: 1572 mSDtfsCounter, 45 mSDsluCounter, 1524 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 3096 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 [2022-07-12 09:07:34,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 3096 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:07:34,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7213 states. [2022-07-12 09:07:35,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7213 to 7211. [2022-07-12 09:07:35,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7211 states, 7209 states have (on average 1.4602580108198087) internal successors, (10527), 7210 states have internal predecessors, (10527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:07:35,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7211 states to 7211 states and 10527 transitions. [2022-07-12 09:07:35,267 INFO L78 Accepts]: Start accepts. Automaton has 7211 states and 10527 transitions. Word has length 81 [2022-07-12 09:07:35,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:07:35,267 INFO L495 AbstractCegarLoop]: Abstraction has 7211 states and 10527 transitions. [2022-07-12 09:07:35,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:07:35,267 INFO L276 IsEmpty]: Start isEmpty. Operand 7211 states and 10527 transitions. [2022-07-12 09:07:35,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-07-12 09:07:35,268 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:07:35,269 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-12 09:07:35,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-12 09:07:35,269 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:07:35,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:07:35,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1706064798, now seen corresponding path program 1 times [2022-07-12 09:07:35,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:07:35,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93544254] [2022-07-12 09:07:35,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:07:35,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:07:35,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:07:35,305 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 09:07:35,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:07:35,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93544254] [2022-07-12 09:07:35,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93544254] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:07:35,306 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:07:35,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 09:07:35,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177760486] [2022-07-12 09:07:35,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:07:35,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 09:07:35,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:07:35,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 09:07:35,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 09:07:35,307 INFO L87 Difference]: Start difference. First operand 7211 states and 10527 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:07:35,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:07:35,781 INFO L93 Difference]: Finished difference Result 11573 states and 16740 transitions. [2022-07-12 09:07:35,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 09:07:35,781 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2022-07-12 09:07:35,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:07:35,796 INFO L225 Difference]: With dead ends: 11573 [2022-07-12 09:07:35,796 INFO L226 Difference]: Without dead ends: 10483 [2022-07-12 09:07:35,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-12 09:07:35,800 INFO L413 NwaCegarLoop]: 1600 mSDtfsCounter, 4760 mSDsluCounter, 1779 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4760 SdHoareTripleChecker+Valid, 3379 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:07:35,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4760 Valid, 3379 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:07:35,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10483 states. [2022-07-12 09:07:36,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10483 to 8299. [2022-07-12 09:07:36,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8299 states, 8297 states have (on average 1.4538989996384235) internal successors, (12063), 8298 states have internal predecessors, (12063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:07:36,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8299 states to 8299 states and 12063 transitions. [2022-07-12 09:07:36,225 INFO L78 Accepts]: Start accepts. Automaton has 8299 states and 12063 transitions. Word has length 81 [2022-07-12 09:07:36,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:07:36,225 INFO L495 AbstractCegarLoop]: Abstraction has 8299 states and 12063 transitions. [2022-07-12 09:07:36,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:07:36,225 INFO L276 IsEmpty]: Start isEmpty. Operand 8299 states and 12063 transitions. [2022-07-12 09:07:36,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-07-12 09:07:36,230 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:07:36,230 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] [2022-07-12 09:07:36,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-12 09:07:36,230 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:07:36,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:07:36,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1625443301, now seen corresponding path program 1 times [2022-07-12 09:07:36,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:07:36,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165433485] [2022-07-12 09:07:36,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:07:36,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:07:36,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:07:36,275 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:07:36,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:07:36,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165433485] [2022-07-12 09:07:36,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165433485] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:07:36,276 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:07:36,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 09:07:36,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047910351] [2022-07-12 09:07:36,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:07:36,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:07:36,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:07:36,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:07:36,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:07:36,278 INFO L87 Difference]: Start difference. First operand 8299 states and 12063 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 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) [2022-07-12 09:07:36,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:07:36,465 INFO L93 Difference]: Finished difference Result 11295 states and 16289 transitions. [2022-07-12 09:07:36,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:07:36,466 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 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 82 [2022-07-12 09:07:36,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:07:36,472 INFO L225 Difference]: With dead ends: 11295 [2022-07-12 09:07:36,472 INFO L226 Difference]: Without dead ends: 5309 [2022-07-12 09:07:36,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:07:36,478 INFO L413 NwaCegarLoop]: 1565 mSDtfsCounter, 39 mSDsluCounter, 1516 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 3081 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 [2022-07-12 09:07:36,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 3081 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:07:36,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5309 states. [2022-07-12 09:07:36,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5309 to 5307. [2022-07-12 09:07:36,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5307 states, 5305 states have (on average 1.469368520263902) internal successors, (7795), 5306 states have internal predecessors, (7795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:07:36,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5307 states to 5307 states and 7795 transitions. [2022-07-12 09:07:36,731 INFO L78 Accepts]: Start accepts. Automaton has 5307 states and 7795 transitions. Word has length 82 [2022-07-12 09:07:36,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:07:36,731 INFO L495 AbstractCegarLoop]: Abstraction has 5307 states and 7795 transitions. [2022-07-12 09:07:36,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 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) [2022-07-12 09:07:36,732 INFO L276 IsEmpty]: Start isEmpty. Operand 5307 states and 7795 transitions. [2022-07-12 09:07:36,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-07-12 09:07:36,733 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:07:36,733 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-12 09:07:36,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-12 09:07:36,733 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:07:36,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:07:36,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1082921701, now seen corresponding path program 1 times [2022-07-12 09:07:36,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:07:36,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891890986] [2022-07-12 09:07:36,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:07:36,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:07:36,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:07:36,755 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:07:36,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:07:36,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891890986] [2022-07-12 09:07:36,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891890986] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:07:36,756 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:07:36,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 09:07:36,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11042583] [2022-07-12 09:07:36,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:07:36,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:07:36,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:07:36,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:07:36,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:07:36,757 INFO L87 Difference]: Start difference. First operand 5307 states and 7795 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 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) [2022-07-12 09:07:36,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:07:36,861 INFO L93 Difference]: Finished difference Result 6807 states and 9887 transitions. [2022-07-12 09:07:36,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:07:36,862 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 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 82 [2022-07-12 09:07:36,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:07:36,865 INFO L225 Difference]: With dead ends: 6807 [2022-07-12 09:07:36,865 INFO L226 Difference]: Without dead ends: 3813 [2022-07-12 09:07:36,868 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:07:36,868 INFO L413 NwaCegarLoop]: 1558 mSDtfsCounter, 35 mSDsluCounter, 1508 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 3066 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 [2022-07-12 09:07:36,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 3066 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:07:36,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3813 states. [2022-07-12 09:07:36,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3813 to 3811. [2022-07-12 09:07:36,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3811 states, 3809 states have (on average 1.4919926489892361) internal successors, (5683), 3810 states have internal predecessors, (5683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:07:36,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3811 states to 3811 states and 5683 transitions. [2022-07-12 09:07:36,978 INFO L78 Accepts]: Start accepts. Automaton has 3811 states and 5683 transitions. Word has length 82 [2022-07-12 09:07:36,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:07:36,978 INFO L495 AbstractCegarLoop]: Abstraction has 3811 states and 5683 transitions. [2022-07-12 09:07:36,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 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) [2022-07-12 09:07:36,978 INFO L276 IsEmpty]: Start isEmpty. Operand 3811 states and 5683 transitions. [2022-07-12 09:07:36,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-07-12 09:07:36,979 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:07:36,979 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] [2022-07-12 09:07:36,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-12 09:07:36,979 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:07:36,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:07:36,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1170040495, now seen corresponding path program 1 times [2022-07-12 09:07:36,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:07:36,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753282769] [2022-07-12 09:07:36,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:07:36,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:07:36,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:07:37,012 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:07:37,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:07:37,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753282769] [2022-07-12 09:07:37,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753282769] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:07:37,013 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:07:37,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 09:07:37,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095270694] [2022-07-12 09:07:37,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:07:37,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:07:37,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:07:37,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:07:37,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:07:37,015 INFO L87 Difference]: Start difference. First operand 3811 states and 5683 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 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) [2022-07-12 09:07:37,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:07:37,076 INFO L93 Difference]: Finished difference Result 4563 states and 6719 transitions. [2022-07-12 09:07:37,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:07:37,077 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 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 82 [2022-07-12 09:07:37,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:07:37,080 INFO L225 Difference]: With dead ends: 4563 [2022-07-12 09:07:37,080 INFO L226 Difference]: Without dead ends: 3065 [2022-07-12 09:07:37,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:07:37,081 INFO L413 NwaCegarLoop]: 1551 mSDtfsCounter, 31 mSDsluCounter, 1500 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 3051 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 [2022-07-12 09:07:37,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 3051 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:07:37,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3065 states. [2022-07-12 09:07:37,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3065 to 3063. [2022-07-12 09:07:37,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3063 states, 3061 states have (on average 1.5151911140150278) internal successors, (4638), 3062 states have internal predecessors, (4638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:07:37,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3063 states to 3063 states and 4638 transitions. [2022-07-12 09:07:37,147 INFO L78 Accepts]: Start accepts. Automaton has 3063 states and 4638 transitions. Word has length 82 [2022-07-12 09:07:37,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:07:37,148 INFO L495 AbstractCegarLoop]: Abstraction has 3063 states and 4638 transitions. [2022-07-12 09:07:37,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 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) [2022-07-12 09:07:37,148 INFO L276 IsEmpty]: Start isEmpty. Operand 3063 states and 4638 transitions. [2022-07-12 09:07:37,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-07-12 09:07:37,149 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:07:37,149 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] [2022-07-12 09:07:37,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-12 09:07:37,149 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:07:37,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:07:37,151 INFO L85 PathProgramCache]: Analyzing trace with hash 2005651591, now seen corresponding path program 1 times [2022-07-12 09:07:37,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:07:37,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328715570] [2022-07-12 09:07:37,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:07:37,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:07:37,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:07:37,323 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:07:37,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:07:37,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328715570] [2022-07-12 09:07:37,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328715570] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 09:07:37,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360910246] [2022-07-12 09:07:37,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:07:37,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:07:37,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:07:37,325 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 09:07:37,326 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 09:07:37,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:07:37,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-12 09:07:37,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:07:37,695 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 09:07:37,696 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 09:07:37,861 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 09:07:37,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1360910246] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 09:07:37,862 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 09:07:37,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 4, 4] total 18 [2022-07-12 09:07:37,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264508571] [2022-07-12 09:07:37,862 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 09:07:37,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-12 09:07:37,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:07:37,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-12 09:07:37,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2022-07-12 09:07:37,863 INFO L87 Difference]: Start difference. First operand 3063 states and 4638 transitions. Second operand has 18 states, 18 states have (on average 12.722222222222221) internal successors, (229), 18 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:07:40,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:07:40,738 INFO L93 Difference]: Finished difference Result 12222 states and 16849 transitions. [2022-07-12 09:07:40,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-07-12 09:07:40,738 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 12.722222222222221) internal successors, (229), 18 states have internal predecessors, (229), 0 states have call successors, (0), 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 82 [2022-07-12 09:07:40,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:07:40,752 INFO L225 Difference]: With dead ends: 12222 [2022-07-12 09:07:40,752 INFO L226 Difference]: Without dead ends: 11472 [2022-07-12 09:07:40,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 159 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2232 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1175, Invalid=5467, Unknown=0, NotChecked=0, Total=6642 [2022-07-12 09:07:40,761 INFO L413 NwaCegarLoop]: 1547 mSDtfsCounter, 19818 mSDsluCounter, 5136 mSDsCounter, 0 mSdLazyCounter, 883 mSolverCounterSat, 230 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19818 SdHoareTripleChecker+Valid, 6683 SdHoareTripleChecker+Invalid, 1113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 230 IncrementalHoareTripleChecker+Valid, 883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 09:07:40,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19818 Valid, 6683 Invalid, 1113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [230 Valid, 883 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-12 09:07:40,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11472 states. [2022-07-12 09:07:41,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11472 to 8732. [2022-07-12 09:07:41,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8732 states, 8730 states have (on average 1.3626575028636885) internal successors, (11896), 8731 states have internal predecessors, (11896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:07:41,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8732 states to 8732 states and 11896 transitions. [2022-07-12 09:07:41,362 INFO L78 Accepts]: Start accepts. Automaton has 8732 states and 11896 transitions. Word has length 82 [2022-07-12 09:07:41,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:07:41,362 INFO L495 AbstractCegarLoop]: Abstraction has 8732 states and 11896 transitions. [2022-07-12 09:07:41,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 12.722222222222221) internal successors, (229), 18 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:07:41,363 INFO L276 IsEmpty]: Start isEmpty. Operand 8732 states and 11896 transitions. [2022-07-12 09:07:41,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-07-12 09:07:41,364 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:07:41,364 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-12 09:07:41,382 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-12 09:07:41,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:07:41,570 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:07:41,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:07:41,571 INFO L85 PathProgramCache]: Analyzing trace with hash -10585946, now seen corresponding path program 1 times [2022-07-12 09:07:41,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:07:41,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330826827] [2022-07-12 09:07:41,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:07:41,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:07:41,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:07:41,710 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:07:41,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:07:41,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330826827] [2022-07-12 09:07:41,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330826827] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 09:07:41,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174140198] [2022-07-12 09:07:41,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:07:41,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:07:41,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:07:41,715 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 09:07:41,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 09:07:41,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:07:41,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-12 09:07:41,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:07:42,187 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:07:42,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 09:07:42,607 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:07:42,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [174140198] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 09:07:42,608 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 09:07:42,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2022-07-12 09:07:42,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759084187] [2022-07-12 09:07:42,608 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 09:07:42,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-12 09:07:42,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:07:42,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-12 09:07:42,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2022-07-12 09:07:42,609 INFO L87 Difference]: Start difference. First operand 8732 states and 11896 transitions. Second operand has 21 states, 21 states have (on average 8.857142857142858) internal successors, (186), 20 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:07:45,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:07:45,142 INFO L93 Difference]: Finished difference Result 31590 states and 41442 transitions. [2022-07-12 09:07:45,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 09:07:45,142 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.857142857142858) internal successors, (186), 20 states have internal predecessors, (186), 0 states have call successors, (0), 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 83 [2022-07-12 09:07:45,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:07:45,171 INFO L225 Difference]: With dead ends: 31590 [2022-07-12 09:07:45,171 INFO L226 Difference]: Without dead ends: 25463 [2022-07-12 09:07:45,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 152 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=241, Invalid=751, Unknown=0, NotChecked=0, Total=992 [2022-07-12 09:07:45,181 INFO L413 NwaCegarLoop]: 1534 mSDtfsCounter, 15465 mSDsluCounter, 5278 mSDsCounter, 0 mSdLazyCounter, 666 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15465 SdHoareTripleChecker+Valid, 6812 SdHoareTripleChecker+Invalid, 709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 09:07:45,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15465 Valid, 6812 Invalid, 709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 666 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 09:07:45,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25463 states. [2022-07-12 09:07:46,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25463 to 16639. [2022-07-12 09:07:46,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16639 states, 16637 states have (on average 1.3078680050489873) internal successors, (21759), 16638 states have internal predecessors, (21759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:07:46,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16639 states to 16639 states and 21759 transitions. [2022-07-12 09:07:46,670 INFO L78 Accepts]: Start accepts. Automaton has 16639 states and 21759 transitions. Word has length 83 [2022-07-12 09:07:46,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:07:46,670 INFO L495 AbstractCegarLoop]: Abstraction has 16639 states and 21759 transitions. [2022-07-12 09:07:46,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.857142857142858) internal successors, (186), 20 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:07:46,671 INFO L276 IsEmpty]: Start isEmpty. Operand 16639 states and 21759 transitions. [2022-07-12 09:07:46,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-07-12 09:07:46,672 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:07:46,672 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-12 09:07:46,704 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-12 09:07:46,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-07-12 09:07:46,888 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:07:46,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:07:46,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1875749690, now seen corresponding path program 1 times [2022-07-12 09:07:46,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:07:46,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103103300] [2022-07-12 09:07:46,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:07:46,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:07:46,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:07:46,981 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:07:46,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:07:46,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103103300] [2022-07-12 09:07:46,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103103300] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 09:07:46,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [521303358] [2022-07-12 09:07:46,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:07:46,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:07:46,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:07:46,983 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 09:07:46,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-12 09:07:47,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:07:47,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 17 conjunts are in the unsatisfiable core [2022-07-12 09:07:47,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:07:47,893 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:07:47,893 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 09:07:48,553 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:07:48,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [521303358] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 09:07:48,553 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 09:07:48,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 11] total 28 [2022-07-12 09:07:48,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936980641] [2022-07-12 09:07:48,554 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 09:07:48,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-07-12 09:07:48,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:07:48,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-07-12 09:07:48,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=671, Unknown=0, NotChecked=0, Total=756 [2022-07-12 09:07:48,555 INFO L87 Difference]: Start difference. First operand 16639 states and 21759 transitions. Second operand has 28 states, 28 states have (on average 7.464285714285714) internal successors, (209), 28 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:08:00,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:08:00,398 INFO L93 Difference]: Finished difference Result 86435 states and 110966 transitions. [2022-07-12 09:08:00,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-07-12 09:08:00,400 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 7.464285714285714) internal successors, (209), 28 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2022-07-12 09:08:00,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:08:00,488 INFO L225 Difference]: With dead ends: 86435 [2022-07-12 09:08:00,489 INFO L226 Difference]: Without dead ends: 73293 [2022-07-12 09:08:00,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3175 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1862, Invalid=8238, Unknown=0, NotChecked=0, Total=10100 [2022-07-12 09:08:00,510 INFO L413 NwaCegarLoop]: 1608 mSDtfsCounter, 14056 mSDsluCounter, 16419 mSDsCounter, 0 mSdLazyCounter, 1625 mSolverCounterSat, 483 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14056 SdHoareTripleChecker+Valid, 18027 SdHoareTripleChecker+Invalid, 2108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 483 IncrementalHoareTripleChecker+Valid, 1625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-12 09:08:00,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14056 Valid, 18027 Invalid, 2108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [483 Valid, 1625 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-12 09:08:00,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73293 states. [2022-07-12 09:08:05,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73293 to 39222. [2022-07-12 09:08:05,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39222 states, 39220 states have (on average 1.2736104028556858) internal successors, (49951), 39221 states have internal predecessors, (49951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:08:05,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39222 states to 39222 states and 49951 transitions. [2022-07-12 09:08:05,315 INFO L78 Accepts]: Start accepts. Automaton has 39222 states and 49951 transitions. Word has length 83 [2022-07-12 09:08:05,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:08:05,316 INFO L495 AbstractCegarLoop]: Abstraction has 39222 states and 49951 transitions. [2022-07-12 09:08:05,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 7.464285714285714) internal successors, (209), 28 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:08:05,316 INFO L276 IsEmpty]: Start isEmpty. Operand 39222 states and 49951 transitions. [2022-07-12 09:08:05,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-07-12 09:08:05,317 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:08:05,318 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-12 09:08:05,335 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-12 09:08:05,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:08:05,531 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:08:05,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:08:05,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1855953112, now seen corresponding path program 1 times [2022-07-12 09:08:05,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:08:05,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553724028] [2022-07-12 09:08:05,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:08:05,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:08:05,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:08:05,582 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-12 09:08:05,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:08:05,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553724028] [2022-07-12 09:08:05,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553724028] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:08:05,582 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:08:05,582 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 09:08:05,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869671052] [2022-07-12 09:08:05,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:08:05,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 09:08:05,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:08:05,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 09:08:05,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 09:08:05,584 INFO L87 Difference]: Start difference. First operand 39222 states and 49951 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:08:09,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:08:09,403 INFO L93 Difference]: Finished difference Result 66357 states and 84076 transitions. [2022-07-12 09:08:09,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 09:08:09,404 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2022-07-12 09:08:09,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:08:09,440 INFO L225 Difference]: With dead ends: 66357 [2022-07-12 09:08:09,441 INFO L226 Difference]: Without dead ends: 29531 [2022-07-12 09:08:09,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-12 09:08:09,464 INFO L413 NwaCegarLoop]: 1506 mSDtfsCounter, 4607 mSDsluCounter, 1474 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4607 SdHoareTripleChecker+Valid, 2980 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:08:09,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4607 Valid, 2980 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:08:09,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29531 states. [2022-07-12 09:08:13,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29531 to 28403. [2022-07-12 09:08:13,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28403 states, 28401 states have (on average 1.262596387451146) internal successors, (35859), 28402 states have internal predecessors, (35859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:08:13,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28403 states to 28403 states and 35859 transitions. [2022-07-12 09:08:13,074 INFO L78 Accepts]: Start accepts. Automaton has 28403 states and 35859 transitions. Word has length 83 [2022-07-12 09:08:13,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:08:13,075 INFO L495 AbstractCegarLoop]: Abstraction has 28403 states and 35859 transitions. [2022-07-12 09:08:13,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:08:13,076 INFO L276 IsEmpty]: Start isEmpty. Operand 28403 states and 35859 transitions. [2022-07-12 09:08:13,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-07-12 09:08:13,082 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:08:13,083 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-12 09:08:13,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-12 09:08:13,083 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:08:13,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:08:13,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1741675261, now seen corresponding path program 1 times [2022-07-12 09:08:13,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:08:13,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475965617] [2022-07-12 09:08:13,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:08:13,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:08:13,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:08:13,194 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:08:13,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:08:13,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475965617] [2022-07-12 09:08:13,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475965617] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 09:08:13,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [753829212] [2022-07-12 09:08:13,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:08:13,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:08:13,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:08:13,203 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 09:08:13,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-12 09:08:13,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:08:13,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-12 09:08:13,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:08:13,802 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:08:13,802 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 09:08:14,122 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:08:14,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [753829212] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 09:08:14,122 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 09:08:14,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2022-07-12 09:08:14,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680307948] [2022-07-12 09:08:14,123 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 09:08:14,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-12 09:08:14,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:08:14,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-12 09:08:14,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2022-07-12 09:08:14,124 INFO L87 Difference]: Start difference. First operand 28403 states and 35859 transitions. Second operand has 21 states, 21 states have (on average 9.523809523809524) internal successors, (200), 20 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:08:29,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:08:29,185 INFO L93 Difference]: Finished difference Result 127204 states and 156736 transitions. [2022-07-12 09:08:29,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-12 09:08:29,186 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 9.523809523809524) internal successors, (200), 20 states have internal predecessors, (200), 0 states have call successors, (0), 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 84 [2022-07-12 09:08:29,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:08:29,321 INFO L225 Difference]: With dead ends: 127204 [2022-07-12 09:08:29,322 INFO L226 Difference]: Without dead ends: 105556 [2022-07-12 09:08:29,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 154 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=408, Invalid=1152, Unknown=0, NotChecked=0, Total=1560 [2022-07-12 09:08:29,345 INFO L413 NwaCegarLoop]: 1532 mSDtfsCounter, 14221 mSDsluCounter, 4881 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14221 SdHoareTripleChecker+Valid, 6413 SdHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 09:08:29,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14221 Valid, 6413 Invalid, 465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 419 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 09:08:29,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105556 states. [2022-07-12 09:08:39,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105556 to 71286. [2022-07-12 09:08:39,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71286 states, 71284 states have (on average 1.2360698052858987) internal successors, (88112), 71285 states have internal predecessors, (88112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:08:39,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71286 states to 71286 states and 88112 transitions. [2022-07-12 09:08:39,349 INFO L78 Accepts]: Start accepts. Automaton has 71286 states and 88112 transitions. Word has length 84 [2022-07-12 09:08:39,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:08:39,350 INFO L495 AbstractCegarLoop]: Abstraction has 71286 states and 88112 transitions. [2022-07-12 09:08:39,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 9.523809523809524) internal successors, (200), 20 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:08:39,350 INFO L276 IsEmpty]: Start isEmpty. Operand 71286 states and 88112 transitions. [2022-07-12 09:08:39,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-07-12 09:08:39,352 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:08:39,352 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-12 09:08:39,370 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-12 09:08:39,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:08:39,567 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:08:39,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:08:39,568 INFO L85 PathProgramCache]: Analyzing trace with hash -307712581, now seen corresponding path program 1 times [2022-07-12 09:08:39,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:08:39,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464952587] [2022-07-12 09:08:39,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:08:39,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:08:39,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:08:39,603 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-12 09:08:39,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:08:39,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464952587] [2022-07-12 09:08:39,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464952587] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:08:39,604 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:08:39,604 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 09:08:39,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384499702] [2022-07-12 09:08:39,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:08:39,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 09:08:39,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:08:39,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 09:08:39,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 09:08:39,606 INFO L87 Difference]: Start difference. First operand 71286 states and 88112 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:08:47,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:08:47,514 INFO L93 Difference]: Finished difference Result 121823 states and 150160 transitions. [2022-07-12 09:08:47,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 09:08:47,514 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-07-12 09:08:47,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:08:47,583 INFO L225 Difference]: With dead ends: 121823 [2022-07-12 09:08:47,584 INFO L226 Difference]: Without dead ends: 53105 [2022-07-12 09:08:47,775 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-12 09:08:47,777 INFO L413 NwaCegarLoop]: 1506 mSDtfsCounter, 4558 mSDsluCounter, 1483 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4558 SdHoareTripleChecker+Valid, 2989 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:08:47,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4558 Valid, 2989 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:08:47,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53105 states. [2022-07-12 09:08:55,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53105 to 53105. [2022-07-12 09:08:55,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53105 states, 53103 states have (on average 1.221701222153174) internal successors, (64876), 53104 states have internal predecessors, (64876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:08:55,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53105 states to 53105 states and 64876 transitions. [2022-07-12 09:08:55,566 INFO L78 Accepts]: Start accepts. Automaton has 53105 states and 64876 transitions. Word has length 84 [2022-07-12 09:08:55,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:08:55,566 INFO L495 AbstractCegarLoop]: Abstraction has 53105 states and 64876 transitions. [2022-07-12 09:08:55,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:08:55,566 INFO L276 IsEmpty]: Start isEmpty. Operand 53105 states and 64876 transitions. [2022-07-12 09:08:55,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-07-12 09:08:55,568 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:08:55,568 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-12 09:08:55,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-12 09:08:55,568 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:08:55,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:08:55,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1154652827, now seen corresponding path program 1 times [2022-07-12 09:08:55,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:08:55,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814768576] [2022-07-12 09:08:55,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:08:55,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:08:55,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:08:55,608 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-12 09:08:55,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:08:55,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814768576] [2022-07-12 09:08:55,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814768576] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:08:55,609 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:08:55,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 09:08:55,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806494261] [2022-07-12 09:08:55,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:08:55,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 09:08:55,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:08:55,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 09:08:55,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 09:08:55,610 INFO L87 Difference]: Start difference. First operand 53105 states and 64876 transitions. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:09:01,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:09:01,862 INFO L93 Difference]: Finished difference Result 91688 states and 111707 transitions. [2022-07-12 09:09:01,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 09:09:01,862 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 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 84 [2022-07-12 09:09:01,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:09:01,910 INFO L225 Difference]: With dead ends: 91688 [2022-07-12 09:09:01,911 INFO L226 Difference]: Without dead ends: 40973 [2022-07-12 09:09:01,935 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-12 09:09:01,937 INFO L413 NwaCegarLoop]: 1506 mSDtfsCounter, 4617 mSDsluCounter, 1470 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4617 SdHoareTripleChecker+Valid, 2976 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:09:01,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4617 Valid, 2976 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:09:01,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40973 states. [2022-07-12 09:09:08,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40973 to 40973. [2022-07-12 09:09:08,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40973 states, 40971 states have (on average 1.216006443582046) internal successors, (49821), 40972 states have internal predecessors, (49821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:09:08,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40973 states to 40973 states and 49821 transitions. [2022-07-12 09:09:08,427 INFO L78 Accepts]: Start accepts. Automaton has 40973 states and 49821 transitions. Word has length 84 [2022-07-12 09:09:08,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:09:08,428 INFO L495 AbstractCegarLoop]: Abstraction has 40973 states and 49821 transitions. [2022-07-12 09:09:08,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:09:08,428 INFO L276 IsEmpty]: Start isEmpty. Operand 40973 states and 49821 transitions. [2022-07-12 09:09:08,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-07-12 09:09:08,430 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:09:08,430 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-12 09:09:08,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-12 09:09:08,430 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:09:08,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:09:08,430 INFO L85 PathProgramCache]: Analyzing trace with hash -125329541, now seen corresponding path program 1 times [2022-07-12 09:09:08,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:09:08,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658816707] [2022-07-12 09:09:08,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:09:08,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:09:08,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:09:08,467 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-12 09:09:08,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:09:08,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658816707] [2022-07-12 09:09:08,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658816707] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:09:08,468 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:09:08,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 09:09:08,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29054121] [2022-07-12 09:09:08,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:09:08,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 09:09:08,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:09:08,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 09:09:08,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 09:09:08,469 INFO L87 Difference]: Start difference. First operand 40973 states and 49821 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 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) [2022-07-12 09:09:16,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:09:16,038 INFO L93 Difference]: Finished difference Result 87833 states and 106814 transitions. [2022-07-12 09:09:16,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 09:09:16,039 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 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 84 [2022-07-12 09:09:16,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:09:16,104 INFO L225 Difference]: With dead ends: 87833 [2022-07-12 09:09:16,105 INFO L226 Difference]: Without dead ends: 49185 [2022-07-12 09:09:16,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-12 09:09:16,126 INFO L413 NwaCegarLoop]: 1506 mSDtfsCounter, 4732 mSDsluCounter, 1566 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4732 SdHoareTripleChecker+Valid, 3072 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 09:09:16,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4732 Valid, 3072 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 09:09:16,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49185 states. [2022-07-12 09:09:23,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49185 to 44335. [2022-07-12 09:09:23,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44335 states, 44333 states have (on average 1.2135655155301919) internal successors, (53801), 44334 states have internal predecessors, (53801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:09:23,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44335 states to 44335 states and 53801 transitions. [2022-07-12 09:09:23,408 INFO L78 Accepts]: Start accepts. Automaton has 44335 states and 53801 transitions. Word has length 84 [2022-07-12 09:09:23,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:09:23,408 INFO L495 AbstractCegarLoop]: Abstraction has 44335 states and 53801 transitions. [2022-07-12 09:09:23,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 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) [2022-07-12 09:09:23,408 INFO L276 IsEmpty]: Start isEmpty. Operand 44335 states and 53801 transitions. [2022-07-12 09:09:23,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-07-12 09:09:23,410 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:09:23,410 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-12 09:09:23,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-12 09:09:23,410 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:09:23,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:09:23,410 INFO L85 PathProgramCache]: Analyzing trace with hash -260780419, now seen corresponding path program 1 times [2022-07-12 09:09:23,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:09:23,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271278059] [2022-07-12 09:09:23,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:09:23,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:09:23,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:09:23,667 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:09:23,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:09:23,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271278059] [2022-07-12 09:09:23,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271278059] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 09:09:23,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793729913] [2022-07-12 09:09:23,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:09:23,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:09:23,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:09:23,669 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 09:09:23,670 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-12 09:09:23,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:09:23,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 47 conjunts are in the unsatisfiable core [2022-07-12 09:09:23,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:09:27,589 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:09:27,589 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 09:09:30,066 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:09:30,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1793729913] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 09:09:30,067 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 09:09:30,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 26, 23] total 56 [2022-07-12 09:09:30,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086642726] [2022-07-12 09:09:30,067 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 09:09:30,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-07-12 09:09:30,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:09:30,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-07-12 09:09:30,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=373, Invalid=2707, Unknown=0, NotChecked=0, Total=3080 [2022-07-12 09:09:30,069 INFO L87 Difference]: Start difference. First operand 44335 states and 53801 transitions. Second operand has 56 states, 56 states have (on average 4.125) internal successors, (231), 56 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:10:00,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:10:00,932 INFO L93 Difference]: Finished difference Result 103903 states and 122908 transitions. [2022-07-12 09:10:00,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2022-07-12 09:10:00,932 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 4.125) internal successors, (231), 56 states have internal predecessors, (231), 0 states have call successors, (0), 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 [2022-07-12 09:10:00,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:10:01,050 INFO L225 Difference]: With dead ends: 103903 [2022-07-12 09:10:01,051 INFO L226 Difference]: Without dead ends: 83861 [2022-07-12 09:10:01,073 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 127 SyntacticMatches, 2 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9943 ImplicationChecksByTransitivity, 15.0s TimeCoverageRelationStatistics Valid=4027, Invalid=23695, Unknown=0, NotChecked=0, Total=27722 [2022-07-12 09:10:01,073 INFO L413 NwaCegarLoop]: 1612 mSDtfsCounter, 22382 mSDsluCounter, 25919 mSDsCounter, 0 mSdLazyCounter, 2306 mSolverCounterSat, 448 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22382 SdHoareTripleChecker+Valid, 27531 SdHoareTripleChecker+Invalid, 2754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 448 IncrementalHoareTripleChecker+Valid, 2306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:10:01,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22382 Valid, 27531 Invalid, 2754 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [448 Valid, 2306 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-12 09:10:01,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83861 states. [2022-07-12 09:10:09,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83861 to 44798. [2022-07-12 09:10:09,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44798 states, 44796 states have (on average 1.2186132690418787) internal successors, (54589), 44797 states have internal predecessors, (54589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:10:09,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44798 states to 44798 states and 54589 transitions. [2022-07-12 09:10:09,775 INFO L78 Accepts]: Start accepts. Automaton has 44798 states and 54589 transitions. Word has length 85 [2022-07-12 09:10:09,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:10:09,775 INFO L495 AbstractCegarLoop]: Abstraction has 44798 states and 54589 transitions. [2022-07-12 09:10:09,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 4.125) internal successors, (231), 56 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:10:09,775 INFO L276 IsEmpty]: Start isEmpty. Operand 44798 states and 54589 transitions. [2022-07-12 09:10:09,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-07-12 09:10:09,776 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:10:09,776 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-12 09:10:09,794 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-12 09:10:09,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-07-12 09:10:09,988 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:10:09,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:10:09,988 INFO L85 PathProgramCache]: Analyzing trace with hash -2123092797, now seen corresponding path program 1 times [2022-07-12 09:10:09,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:10:09,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650513718] [2022-07-12 09:10:09,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:10:09,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:10:10,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:10:10,533 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:10:10,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:10:10,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650513718] [2022-07-12 09:10:10,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650513718] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 09:10:10,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1227589071] [2022-07-12 09:10:10,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:10:10,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:10:10,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:10:10,535 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 09:10:10,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-12 09:10:10,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:10:10,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-12 09:10:10,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:10:11,684 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:10:11,685 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 09:10:12,953 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:10:12,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1227589071] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 09:10:12,954 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 09:10:12,954 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 16, 15] total 54 [2022-07-12 09:10:12,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860950735] [2022-07-12 09:10:12,954 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 09:10:12,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-07-12 09:10:12,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:10:12,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-07-12 09:10:12,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=2644, Unknown=0, NotChecked=0, Total=2862 [2022-07-12 09:10:12,956 INFO L87 Difference]: Start difference. First operand 44798 states and 54589 transitions. Second operand has 54 states, 54 states have (on average 4.185185185185185) internal successors, (226), 54 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:10:37,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:10:37,326 INFO L93 Difference]: Finished difference Result 116159 states and 141345 transitions. [2022-07-12 09:10:37,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-07-12 09:10:37,327 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 4.185185185185185) internal successors, (226), 54 states have internal predecessors, (226), 0 states have call successors, (0), 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 [2022-07-12 09:10:37,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:10:37,468 INFO L225 Difference]: With dead ends: 116159 [2022-07-12 09:10:37,468 INFO L226 Difference]: Without dead ends: 100181 [2022-07-12 09:10:37,492 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1395 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=992, Invalid=7018, Unknown=0, NotChecked=0, Total=8010 [2022-07-12 09:10:37,492 INFO L413 NwaCegarLoop]: 1602 mSDtfsCounter, 23153 mSDsluCounter, 36760 mSDsCounter, 0 mSdLazyCounter, 2323 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23153 SdHoareTripleChecker+Valid, 38362 SdHoareTripleChecker+Invalid, 2466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 2323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:10:37,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23153 Valid, 38362 Invalid, 2466 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [143 Valid, 2323 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-12 09:10:37,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100181 states. [2022-07-12 09:10:46,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100181 to 44068. [2022-07-12 09:10:46,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44068 states, 44066 states have (on average 1.2199655062860255) internal successors, (53759), 44067 states have internal predecessors, (53759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:10:46,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44068 states to 44068 states and 53759 transitions. [2022-07-12 09:10:46,761 INFO L78 Accepts]: Start accepts. Automaton has 44068 states and 53759 transitions. Word has length 85 [2022-07-12 09:10:46,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:10:46,762 INFO L495 AbstractCegarLoop]: Abstraction has 44068 states and 53759 transitions. [2022-07-12 09:10:46,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 4.185185185185185) internal successors, (226), 54 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:10:46,762 INFO L276 IsEmpty]: Start isEmpty. Operand 44068 states and 53759 transitions. [2022-07-12 09:10:46,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-07-12 09:10:46,764 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:10:46,764 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-12 09:10:46,781 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-12 09:10:46,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-07-12 09:10:46,973 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:10:46,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:10:46,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1277447986, now seen corresponding path program 1 times [2022-07-12 09:10:46,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:10:46,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843538617] [2022-07-12 09:10:46,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:10:46,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:10:46,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:10:47,793 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:10:47,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:10:47,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843538617] [2022-07-12 09:10:47,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843538617] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 09:10:47,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2063322954] [2022-07-12 09:10:47,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:10:47,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:10:47,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:10:47,796 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 09:10:47,797 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-12 09:10:47,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:10:47,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-12 09:10:47,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:10:48,714 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:10:48,714 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 09:10:49,447 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:10:49,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2063322954] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 09:10:49,448 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 09:10:49,448 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 13, 13] total 46 [2022-07-12 09:10:49,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272927640] [2022-07-12 09:10:49,448 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 09:10:49,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-07-12 09:10:49,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:10:49,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-07-12 09:10:49,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=1923, Unknown=0, NotChecked=0, Total=2070 [2022-07-12 09:10:49,449 INFO L87 Difference]: Start difference. First operand 44068 states and 53759 transitions. Second operand has 46 states, 46 states have (on average 4.978260869565218) internal successors, (229), 46 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:11:11,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:11:11,933 INFO L93 Difference]: Finished difference Result 105618 states and 128876 transitions. [2022-07-12 09:11:11,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-07-12 09:11:11,934 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 4.978260869565218) internal successors, (229), 46 states have internal predecessors, (229), 0 states have call successors, (0), 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 86 [2022-07-12 09:11:11,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:11:12,054 INFO L225 Difference]: With dead ends: 105618 [2022-07-12 09:11:12,054 INFO L226 Difference]: Without dead ends: 89880 [2022-07-12 09:11:12,073 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 687 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=588, Invalid=3702, Unknown=0, NotChecked=0, Total=4290 [2022-07-12 09:11:12,074 INFO L413 NwaCegarLoop]: 1575 mSDtfsCounter, 10948 mSDsluCounter, 31018 mSDsCounter, 0 mSdLazyCounter, 1191 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10948 SdHoareTripleChecker+Valid, 32593 SdHoareTripleChecker+Invalid, 1271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 09:11:12,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10948 Valid, 32593 Invalid, 1271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1191 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-12 09:11:12,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89880 states. [2022-07-12 09:11:21,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89880 to 42780. [2022-07-12 09:11:21,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42780 states, 42778 states have (on average 1.2205806723081958) internal successors, (52214), 42779 states have internal predecessors, (52214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:11:21,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42780 states to 42780 states and 52214 transitions. [2022-07-12 09:11:21,460 INFO L78 Accepts]: Start accepts. Automaton has 42780 states and 52214 transitions. Word has length 86 [2022-07-12 09:11:21,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:11:21,461 INFO L495 AbstractCegarLoop]: Abstraction has 42780 states and 52214 transitions. [2022-07-12 09:11:21,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 4.978260869565218) internal successors, (229), 46 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:11:21,461 INFO L276 IsEmpty]: Start isEmpty. Operand 42780 states and 52214 transitions. [2022-07-12 09:11:21,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-07-12 09:11:21,462 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:11:21,462 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] [2022-07-12 09:11:21,478 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-12 09:11:21,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:11:21,675 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:11:21,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:11:21,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1109215011, now seen corresponding path program 1 times [2022-07-12 09:11:21,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:11:21,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181607183] [2022-07-12 09:11:21,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:11:21,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:11:21,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:11:21,900 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:11:21,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:11:21,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181607183] [2022-07-12 09:11:21,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181607183] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 09:11:21,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699766335] [2022-07-12 09:11:21,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:11:21,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:11:21,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:11:21,902 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 09:11:21,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-12 09:11:21,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:11:21,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 31 conjunts are in the unsatisfiable core [2022-07-12 09:11:21,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:11:23,334 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:11:23,334 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 09:11:24,588 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:11:24,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [699766335] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 09:11:24,589 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 09:11:24,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 18, 19] total 46 [2022-07-12 09:11:24,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250373181] [2022-07-12 09:11:24,589 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 09:11:24,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-07-12 09:11:24,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:11:24,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-07-12 09:11:24,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=241, Invalid=1829, Unknown=0, NotChecked=0, Total=2070 [2022-07-12 09:11:24,591 INFO L87 Difference]: Start difference. First operand 42780 states and 52214 transitions. Second operand has 46 states, 46 states have (on average 5.086956521739131) internal successors, (234), 46 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)