./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label43+token_ring.09.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label43+token_ring.09.cil-2.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 5ab060d6e8ec67586454a3fd3cad3b6749e261734a1b9e4129e037a184a704d9 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 19:56:20,606 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 19:56:20,608 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 19:56:20,645 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 19:56:20,646 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 19:56:20,648 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 19:56:20,651 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 19:56:20,654 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 19:56:20,655 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 19:56:20,657 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 19:56:20,658 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 19:56:20,659 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 19:56:20,659 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 19:56:20,660 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 19:56:20,661 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 19:56:20,662 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 19:56:20,663 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 19:56:20,665 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 19:56:20,668 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 19:56:20,670 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 19:56:20,672 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 19:56:20,673 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 19:56:20,674 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 19:56:20,675 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 19:56:20,676 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 19:56:20,678 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 19:56:20,678 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 19:56:20,678 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 19:56:20,679 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 19:56:20,680 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 19:56:20,680 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 19:56:20,681 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 19:56:20,681 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 19:56:20,682 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 19:56:20,683 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 19:56:20,684 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 19:56:20,684 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 19:56:20,684 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 19:56:20,685 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 19:56:20,685 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 19:56:20,686 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 19:56:20,692 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 19:56:20,693 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 19:56:20,727 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 19:56:20,728 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 19:56:20,728 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 19:56:20,728 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 19:56:20,729 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 19:56:20,729 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 19:56:20,730 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 19:56:20,730 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 19:56:20,730 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 19:56:20,731 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 19:56:20,731 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 19:56:20,732 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 19:56:20,732 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 19:56:20,732 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 19:56:20,732 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 19:56:20,732 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 19:56:20,732 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 19:56:20,733 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 19:56:20,733 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 19:56:20,733 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 19:56:20,733 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 19:56:20,733 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 19:56:20,734 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 19:56:20,734 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 19:56:20,734 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 19:56:20,734 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 19:56:20,739 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 19:56:20,739 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 19:56:20,740 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 19:56:20,740 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 19:56:20,740 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 19:56:20,741 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 19:56:20,741 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 19:56:20,741 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5ab060d6e8ec67586454a3fd3cad3b6749e261734a1b9e4129e037a184a704d9 [2022-07-13 19:56:20,968 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 19:56:20,994 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 19:56:20,997 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 19:56:20,998 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 19:56:20,998 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 19:56:20,999 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label43+token_ring.09.cil-2.c [2022-07-13 19:56:21,059 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa89460c9/f328f13e3ac544b9a179805dd3078e0c/FLAG006968edd [2022-07-13 19:56:21,958 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 19:56:21,958 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label43+token_ring.09.cil-2.c [2022-07-13 19:56:22,006 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa89460c9/f328f13e3ac544b9a179805dd3078e0c/FLAG006968edd [2022-07-13 19:56:22,355 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa89460c9/f328f13e3ac544b9a179805dd3078e0c [2022-07-13 19:56:22,358 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 19:56:22,359 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 19:56:22,361 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 19:56:22,361 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 19:56:22,364 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 19:56:22,365 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 07:56:22" (1/1) ... [2022-07-13 19:56:22,366 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e172732 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:56:22, skipping insertion in model container [2022-07-13 19:56:22,366 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 07:56:22" (1/1) ... [2022-07-13 19:56:22,372 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 19:56:22,594 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 19:56:24,058 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/Problem05_label43+token_ring.09.cil-2.c[381679,381692] [2022-07-13 19:56:24,083 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/Problem05_label43+token_ring.09.cil-2.c[383339,383352] [2022-07-13 19:56:24,313 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 19:56:24,320 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 19:56:25,183 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/Problem05_label43+token_ring.09.cil-2.c[381679,381692] [2022-07-13 19:56:25,187 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/Problem05_label43+token_ring.09.cil-2.c[383339,383352] [2022-07-13 19:56:25,200 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 19:56:25,265 INFO L208 MainTranslator]: Completed translation [2022-07-13 19:56:25,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:56:25 WrapperNode [2022-07-13 19:56:25,266 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 19:56:25,267 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 19:56:25,267 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 19:56:25,267 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 19:56:25,273 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:56:25" (1/1) ... [2022-07-13 19:56:25,367 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:56:25" (1/1) ... [2022-07-13 19:56:25,726 INFO L137 Inliner]: procedures = 62, calls = 69, calls flagged for inlining = 39, calls inlined = 39, statements flattened = 13030 [2022-07-13 19:56:25,726 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 19:56:25,727 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 19:56:25,727 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 19:56:25,727 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 19:56:25,738 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:56:25" (1/1) ... [2022-07-13 19:56:25,751 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:56:25" (1/1) ... [2022-07-13 19:56:25,856 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:56:25" (1/1) ... [2022-07-13 19:56:25,856 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:56:25" (1/1) ... [2022-07-13 19:56:26,161 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:56:25" (1/1) ... [2022-07-13 19:56:26,223 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:56:25" (1/1) ... [2022-07-13 19:56:26,249 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:56:25" (1/1) ... [2022-07-13 19:56:26,296 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 19:56:26,298 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 19:56:26,298 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 19:56:26,298 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 19:56:26,301 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:56:25" (1/1) ... [2022-07-13 19:56:26,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 19:56:26,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 19:56:26,328 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-13 19:56:26,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-13 19:56:26,368 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 19:56:26,368 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-07-13 19:56:26,368 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-07-13 19:56:26,368 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-13 19:56:26,369 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-13 19:56:26,369 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-07-13 19:56:26,369 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-07-13 19:56:26,369 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-07-13 19:56:26,369 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-07-13 19:56:26,369 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-07-13 19:56:26,369 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-07-13 19:56:26,370 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-07-13 19:56:26,370 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-07-13 19:56:26,370 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-07-13 19:56:26,370 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-07-13 19:56:26,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 19:56:26,370 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 19:56:26,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 19:56:26,547 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 19:56:26,549 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 19:56:32,408 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 19:56:32,431 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 19:56:32,432 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2022-07-13 19:56:32,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 07:56:32 BoogieIcfgContainer [2022-07-13 19:56:32,436 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 19:56:32,438 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 19:56:32,438 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 19:56:32,441 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 19:56:32,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 07:56:22" (1/3) ... [2022-07-13 19:56:32,442 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bc283ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 07:56:32, skipping insertion in model container [2022-07-13 19:56:32,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:56:25" (2/3) ... [2022-07-13 19:56:32,443 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bc283ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 07:56:32, skipping insertion in model container [2022-07-13 19:56:32,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 07:56:32" (3/3) ... [2022-07-13 19:56:32,444 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label43+token_ring.09.cil-2.c [2022-07-13 19:56:32,457 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 19:56:32,457 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-13 19:56:32,558 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 19:56:32,563 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@26985ebc, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@812d94a [2022-07-13 19:56:32,564 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-13 19:56:32,576 INFO L276 IsEmpty]: Start isEmpty. Operand has 2498 states, 2463 states have (on average 1.847340641494113) internal successors, (4550), 2468 states have internal predecessors, (4550), 25 states have call successors, (25), 7 states have call predecessors, (25), 7 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2022-07-13 19:56:32,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-13 19:56:32,600 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:56:32,601 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:56:32,602 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:56:32,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:56:32,606 INFO L85 PathProgramCache]: Analyzing trace with hash 416596476, now seen corresponding path program 1 times [2022-07-13 19:56:32,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:56:32,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955722226] [2022-07-13 19:56:32,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:56:32,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:56:32,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:32,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:56:32,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:32,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 19:56:32,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:32,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 19:56:32,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:32,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 19:56:32,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:32,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-13 19:56:32,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:32,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:56:32,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:56:32,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955722226] [2022-07-13 19:56:32,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955722226] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:56:32,954 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:56:32,954 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 19:56:32,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637143361] [2022-07-13 19:56:32,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:56:32,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 19:56:32,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:56:32,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 19:56:32,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 19:56:32,989 INFO L87 Difference]: Start difference. First operand has 2498 states, 2463 states have (on average 1.847340641494113) internal successors, (4550), 2468 states have internal predecessors, (4550), 25 states have call successors, (25), 7 states have call predecessors, (25), 7 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:56:34,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:56:34,302 INFO L93 Difference]: Finished difference Result 5096 states and 9373 transitions. [2022-07-13 19:56:34,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 19:56:34,305 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2022-07-13 19:56:34,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:56:34,334 INFO L225 Difference]: With dead ends: 5096 [2022-07-13 19:56:34,334 INFO L226 Difference]: Without dead ends: 2539 [2022-07-13 19:56:34,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-13 19:56:34,346 INFO L413 NwaCegarLoop]: 4557 mSDtfsCounter, 821 mSDsluCounter, 12405 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 842 SdHoareTripleChecker+Valid, 16962 SdHoareTripleChecker+Invalid, 622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 19:56:34,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [842 Valid, 16962 Invalid, 622 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [58 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 19:56:34,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2539 states. [2022-07-13 19:56:34,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2539 to 2430. [2022-07-13 19:56:34,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2430 states, 2397 states have (on average 1.8327075511055486) internal successors, (4393), 2400 states have internal predecessors, (4393), 25 states have call successors, (25), 7 states have call predecessors, (25), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-07-13 19:56:34,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2430 states to 2430 states and 4441 transitions. [2022-07-13 19:56:34,463 INFO L78 Accepts]: Start accepts. Automaton has 2430 states and 4441 transitions. Word has length 146 [2022-07-13 19:56:34,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:56:34,464 INFO L495 AbstractCegarLoop]: Abstraction has 2430 states and 4441 transitions. [2022-07-13 19:56:34,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:56:34,464 INFO L276 IsEmpty]: Start isEmpty. Operand 2430 states and 4441 transitions. [2022-07-13 19:56:34,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-13 19:56:34,467 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:56:34,468 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:56:34,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 19:56:34,468 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:56:34,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:56:34,469 INFO L85 PathProgramCache]: Analyzing trace with hash -982357126, now seen corresponding path program 1 times [2022-07-13 19:56:34,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:56:34,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030062917] [2022-07-13 19:56:34,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:56:34,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:56:34,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:34,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:56:34,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:34,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 19:56:34,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:34,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 19:56:34,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:34,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 19:56:34,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:34,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-13 19:56:34,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:34,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:56:34,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:56:34,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030062917] [2022-07-13 19:56:34,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030062917] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:56:34,657 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:56:34,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 19:56:34,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570900632] [2022-07-13 19:56:34,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:56:34,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 19:56:34,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:56:34,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 19:56:34,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 19:56:34,662 INFO L87 Difference]: Start difference. First operand 2430 states and 4441 transitions. Second operand has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:56:36,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:56:36,915 INFO L93 Difference]: Finished difference Result 3244 states and 5752 transitions. [2022-07-13 19:56:36,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 19:56:36,915 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2022-07-13 19:56:36,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:56:36,934 INFO L225 Difference]: With dead ends: 3244 [2022-07-13 19:56:36,935 INFO L226 Difference]: Without dead ends: 2952 [2022-07-13 19:56:36,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-13 19:56:36,939 INFO L413 NwaCegarLoop]: 4528 mSDtfsCounter, 5181 mSDsluCounter, 12667 mSDsCounter, 0 mSdLazyCounter, 1581 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5197 SdHoareTripleChecker+Valid, 17195 SdHoareTripleChecker+Invalid, 1693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-13 19:56:36,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5197 Valid, 17195 Invalid, 1693 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [112 Valid, 1581 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-13 19:56:36,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2952 states. [2022-07-13 19:56:37,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2952 to 2733. [2022-07-13 19:56:37,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2733 states, 2675 states have (on average 1.8078504672897195) internal successors, (4836), 2679 states have internal predecessors, (4836), 43 states have call successors, (43), 13 states have call predecessors, (43), 13 states have return successors, (44), 41 states have call predecessors, (44), 41 states have call successors, (44) [2022-07-13 19:56:37,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2733 states to 2733 states and 4923 transitions. [2022-07-13 19:56:37,038 INFO L78 Accepts]: Start accepts. Automaton has 2733 states and 4923 transitions. Word has length 146 [2022-07-13 19:56:37,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:56:37,040 INFO L495 AbstractCegarLoop]: Abstraction has 2733 states and 4923 transitions. [2022-07-13 19:56:37,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:56:37,041 INFO L276 IsEmpty]: Start isEmpty. Operand 2733 states and 4923 transitions. [2022-07-13 19:56:37,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-13 19:56:37,045 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:56:37,045 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:56:37,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 19:56:37,046 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:56:37,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:56:37,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1511144566, now seen corresponding path program 1 times [2022-07-13 19:56:37,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:56:37,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398837365] [2022-07-13 19:56:37,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:56:37,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:56:37,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:37,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:56:37,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:37,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 19:56:37,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:37,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 19:56:37,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:37,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 19:56:37,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:37,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-13 19:56:37,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:37,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:56:37,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:56:37,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398837365] [2022-07-13 19:56:37,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398837365] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:56:37,241 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:56:37,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 19:56:37,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558758926] [2022-07-13 19:56:37,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:56:37,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 19:56:37,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:56:37,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 19:56:37,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 19:56:37,244 INFO L87 Difference]: Start difference. First operand 2733 states and 4923 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:56:39,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:56:39,921 INFO L93 Difference]: Finished difference Result 3972 states and 6919 transitions. [2022-07-13 19:56:39,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 19:56:39,922 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2022-07-13 19:56:39,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:56:39,940 INFO L225 Difference]: With dead ends: 3972 [2022-07-13 19:56:39,940 INFO L226 Difference]: Without dead ends: 3377 [2022-07-13 19:56:39,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 19:56:39,952 INFO L413 NwaCegarLoop]: 4773 mSDtfsCounter, 5201 mSDsluCounter, 17403 mSDsCounter, 0 mSdLazyCounter, 2459 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5217 SdHoareTripleChecker+Valid, 22176 SdHoareTripleChecker+Invalid, 2537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 2459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-13 19:56:39,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5217 Valid, 22176 Invalid, 2537 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [78 Valid, 2459 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-13 19:56:39,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3377 states. [2022-07-13 19:56:40,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3377 to 3015. [2022-07-13 19:56:40,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3015 states, 2932 states have (on average 1.7861527967257844) internal successors, (5237), 2937 states have internal predecessors, (5237), 61 states have call successors, (61), 19 states have call predecessors, (61), 20 states have return successors, (64), 60 states have call predecessors, (64), 59 states have call successors, (64) [2022-07-13 19:56:40,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3015 states to 3015 states and 5362 transitions. [2022-07-13 19:56:40,057 INFO L78 Accepts]: Start accepts. Automaton has 3015 states and 5362 transitions. Word has length 146 [2022-07-13 19:56:40,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:56:40,058 INFO L495 AbstractCegarLoop]: Abstraction has 3015 states and 5362 transitions. [2022-07-13 19:56:40,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:56:40,058 INFO L276 IsEmpty]: Start isEmpty. Operand 3015 states and 5362 transitions. [2022-07-13 19:56:40,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-13 19:56:40,061 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:56:40,061 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:56:40,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 19:56:40,062 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:56:40,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:56:40,062 INFO L85 PathProgramCache]: Analyzing trace with hash 804547960, now seen corresponding path program 1 times [2022-07-13 19:56:40,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:56:40,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119825376] [2022-07-13 19:56:40,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:56:40,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:56:40,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:40,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:56:40,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:40,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 19:56:40,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:40,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 19:56:40,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:40,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 19:56:40,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:40,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-13 19:56:40,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:40,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:56:40,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:56:40,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119825376] [2022-07-13 19:56:40,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119825376] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:56:40,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:56:40,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 19:56:40,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769903740] [2022-07-13 19:56:40,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:56:40,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 19:56:40,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:56:40,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 19:56:40,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 19:56:40,229 INFO L87 Difference]: Start difference. First operand 3015 states and 5362 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:56:42,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:56:42,844 INFO L93 Difference]: Finished difference Result 5044 states and 8626 transitions. [2022-07-13 19:56:42,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 19:56:42,845 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2022-07-13 19:56:42,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:56:42,868 INFO L225 Difference]: With dead ends: 5044 [2022-07-13 19:56:42,871 INFO L226 Difference]: Without dead ends: 4167 [2022-07-13 19:56:42,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 19:56:42,886 INFO L413 NwaCegarLoop]: 4761 mSDtfsCounter, 5195 mSDsluCounter, 17403 mSDsCounter, 0 mSdLazyCounter, 2448 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5211 SdHoareTripleChecker+Valid, 22164 SdHoareTripleChecker+Invalid, 2528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-13 19:56:42,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5211 Valid, 22164 Invalid, 2528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 2448 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-13 19:56:42,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4167 states. [2022-07-13 19:56:43,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4167 to 3583. [2022-07-13 19:56:43,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3583 states, 3450 states have (on average 1.752463768115942) internal successors, (6046), 3457 states have internal predecessors, (6046), 97 states have call successors, (97), 31 states have call predecessors, (97), 34 states have return successors, (108), 98 states have call predecessors, (108), 95 states have call successors, (108) [2022-07-13 19:56:43,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3583 states to 3583 states and 6251 transitions. [2022-07-13 19:56:43,054 INFO L78 Accepts]: Start accepts. Automaton has 3583 states and 6251 transitions. Word has length 146 [2022-07-13 19:56:43,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:56:43,060 INFO L495 AbstractCegarLoop]: Abstraction has 3583 states and 6251 transitions. [2022-07-13 19:56:43,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:56:43,061 INFO L276 IsEmpty]: Start isEmpty. Operand 3583 states and 6251 transitions. [2022-07-13 19:56:43,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-13 19:56:43,063 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:56:43,063 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:56:43,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 19:56:43,064 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:56:43,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:56:43,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1666381562, now seen corresponding path program 1 times [2022-07-13 19:56:43,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:56:43,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34901521] [2022-07-13 19:56:43,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:56:43,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:56:43,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:43,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:56:43,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:43,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 19:56:43,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:43,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 19:56:43,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:43,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 19:56:43,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:43,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-13 19:56:43,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:43,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:56:43,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:56:43,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34901521] [2022-07-13 19:56:43,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34901521] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:56:43,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:56:43,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 19:56:43,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102465205] [2022-07-13 19:56:43,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:56:43,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 19:56:43,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:56:43,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 19:56:43,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 19:56:43,220 INFO L87 Difference]: Start difference. First operand 3583 states and 6251 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:56:45,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:56:45,820 INFO L93 Difference]: Finished difference Result 7114 states and 11903 transitions. [2022-07-13 19:56:45,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 19:56:45,820 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2022-07-13 19:56:45,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:56:45,846 INFO L225 Difference]: With dead ends: 7114 [2022-07-13 19:56:45,846 INFO L226 Difference]: Without dead ends: 5669 [2022-07-13 19:56:45,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 19:56:45,853 INFO L413 NwaCegarLoop]: 4756 mSDtfsCounter, 5194 mSDsluCounter, 17403 mSDsCounter, 0 mSdLazyCounter, 2440 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5210 SdHoareTripleChecker+Valid, 22159 SdHoareTripleChecker+Invalid, 2520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-13 19:56:45,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5210 Valid, 22159 Invalid, 2520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 2440 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-13 19:56:45,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5669 states. [2022-07-13 19:56:46,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5669 to 4720. [2022-07-13 19:56:46,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4720 states, 4487 states have (on average 1.70804546467573) internal successors, (7664), 4498 states have internal predecessors, (7664), 169 states have call successors, (169), 55 states have call predecessors, (169), 62 states have return successors, (202), 174 states have call predecessors, (202), 167 states have call successors, (202) [2022-07-13 19:56:46,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4720 states to 4720 states and 8035 transitions. [2022-07-13 19:56:46,111 INFO L78 Accepts]: Start accepts. Automaton has 4720 states and 8035 transitions. Word has length 146 [2022-07-13 19:56:46,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:56:46,112 INFO L495 AbstractCegarLoop]: Abstraction has 4720 states and 8035 transitions. [2022-07-13 19:56:46,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:56:46,112 INFO L276 IsEmpty]: Start isEmpty. Operand 4720 states and 8035 transitions. [2022-07-13 19:56:46,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-13 19:56:46,115 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:56:46,115 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:56:46,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 19:56:46,116 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:56:46,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:56:46,116 INFO L85 PathProgramCache]: Analyzing trace with hash -384027336, now seen corresponding path program 1 times [2022-07-13 19:56:46,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:56:46,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391463200] [2022-07-13 19:56:46,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:56:46,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:56:46,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:46,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:56:46,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:46,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 19:56:46,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:46,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 19:56:46,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:46,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 19:56:46,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:46,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-13 19:56:46,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:46,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:56:46,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:56:46,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391463200] [2022-07-13 19:56:46,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391463200] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:56:46,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:56:46,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 19:56:46,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087434786] [2022-07-13 19:56:46,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:56:46,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 19:56:46,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:56:46,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 19:56:46,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 19:56:46,257 INFO L87 Difference]: Start difference. First operand 4720 states and 8035 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:56:48,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:56:48,690 INFO L93 Difference]: Finished difference Result 11253 states and 18473 transitions. [2022-07-13 19:56:48,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 19:56:48,691 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2022-07-13 19:56:48,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:56:48,733 INFO L225 Difference]: With dead ends: 11253 [2022-07-13 19:56:48,733 INFO L226 Difference]: Without dead ends: 8671 [2022-07-13 19:56:48,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 19:56:48,748 INFO L413 NwaCegarLoop]: 4751 mSDtfsCounter, 5193 mSDsluCounter, 17403 mSDsCounter, 0 mSdLazyCounter, 2432 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5209 SdHoareTripleChecker+Valid, 22154 SdHoareTripleChecker+Invalid, 2512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-13 19:56:48,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5209 Valid, 22154 Invalid, 2512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 2432 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-13 19:56:48,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8671 states. [2022-07-13 19:56:49,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8671 to 7001. [2022-07-13 19:56:49,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7001 states, 6568 states have (on average 1.6610840438489647) internal successors, (10910), 6587 states have internal predecessors, (10910), 313 states have call successors, (313), 103 states have call predecessors, (313), 118 states have return successors, (408), 326 states have call predecessors, (408), 311 states have call successors, (408) [2022-07-13 19:56:49,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7001 states to 7001 states and 11631 transitions. [2022-07-13 19:56:49,145 INFO L78 Accepts]: Start accepts. Automaton has 7001 states and 11631 transitions. Word has length 146 [2022-07-13 19:56:49,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:56:49,145 INFO L495 AbstractCegarLoop]: Abstraction has 7001 states and 11631 transitions. [2022-07-13 19:56:49,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:56:49,146 INFO L276 IsEmpty]: Start isEmpty. Operand 7001 states and 11631 transitions. [2022-07-13 19:56:49,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-13 19:56:49,150 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:56:49,151 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:56:49,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 19:56:49,151 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:56:49,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:56:49,154 INFO L85 PathProgramCache]: Analyzing trace with hash 104019770, now seen corresponding path program 1 times [2022-07-13 19:56:49,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:56:49,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884849968] [2022-07-13 19:56:49,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:56:49,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:56:49,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:49,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:56:49,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:49,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 19:56:49,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:49,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 19:56:49,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:49,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 19:56:49,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:49,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-13 19:56:49,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:49,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:56:49,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:56:49,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884849968] [2022-07-13 19:56:49,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884849968] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:56:49,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:56:49,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 19:56:49,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018911301] [2022-07-13 19:56:49,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:56:49,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 19:56:49,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:56:49,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 19:56:49,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 19:56:49,292 INFO L87 Difference]: Start difference. First operand 7001 states and 11631 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:56:51,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:56:51,840 INFO L93 Difference]: Finished difference Result 19532 states and 31675 transitions. [2022-07-13 19:56:51,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 19:56:51,840 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2022-07-13 19:56:51,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:56:51,907 INFO L225 Difference]: With dead ends: 19532 [2022-07-13 19:56:51,907 INFO L226 Difference]: Without dead ends: 14669 [2022-07-13 19:56:51,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 19:56:51,934 INFO L413 NwaCegarLoop]: 4547 mSDtfsCounter, 5272 mSDsluCounter, 16867 mSDsCounter, 0 mSdLazyCounter, 2161 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5288 SdHoareTripleChecker+Valid, 21414 SdHoareTripleChecker+Invalid, 2275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 2161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-13 19:56:51,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5288 Valid, 21414 Invalid, 2275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 2161 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-13 19:56:51,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14669 states. [2022-07-13 19:56:52,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14669 to 11578. [2022-07-13 19:56:52,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11578 states, 10745 states have (on average 1.621591437878083) internal successors, (17424), 10780 states have internal predecessors, (17424), 601 states have call successors, (601), 199 states have call predecessors, (601), 230 states have return successors, (874), 630 states have call predecessors, (874), 599 states have call successors, (874) [2022-07-13 19:56:52,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11578 states to 11578 states and 18899 transitions. [2022-07-13 19:56:52,621 INFO L78 Accepts]: Start accepts. Automaton has 11578 states and 18899 transitions. Word has length 146 [2022-07-13 19:56:52,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:56:52,622 INFO L495 AbstractCegarLoop]: Abstraction has 11578 states and 18899 transitions. [2022-07-13 19:56:52,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:56:52,622 INFO L276 IsEmpty]: Start isEmpty. Operand 11578 states and 18899 transitions. [2022-07-13 19:56:52,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-13 19:56:52,635 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:56:52,635 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:56:52,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 19:56:52,639 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:56:52,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:56:52,639 INFO L85 PathProgramCache]: Analyzing trace with hash -988615432, now seen corresponding path program 1 times [2022-07-13 19:56:52,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:56:52,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639952790] [2022-07-13 19:56:52,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:56:52,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:56:52,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:52,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:56:52,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:52,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 19:56:52,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:52,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 19:56:52,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:52,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 19:56:52,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:52,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-13 19:56:52,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:52,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:56:52,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:56:52,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639952790] [2022-07-13 19:56:52,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639952790] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:56:52,772 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:56:52,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 19:56:52,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869739724] [2022-07-13 19:56:52,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:56:52,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 19:56:52,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:56:52,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 19:56:52,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 19:56:52,774 INFO L87 Difference]: Start difference. First operand 11578 states and 18899 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:56:54,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:56:54,549 INFO L93 Difference]: Finished difference Result 24276 states and 39482 transitions. [2022-07-13 19:56:54,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 19:56:54,550 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2022-07-13 19:56:54,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:56:54,607 INFO L225 Difference]: With dead ends: 24276 [2022-07-13 19:56:54,607 INFO L226 Difference]: Without dead ends: 14836 [2022-07-13 19:56:54,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-13 19:56:54,640 INFO L413 NwaCegarLoop]: 4458 mSDtfsCounter, 4979 mSDsluCounter, 12485 mSDsCounter, 0 mSdLazyCounter, 1021 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4996 SdHoareTripleChecker+Valid, 16943 SdHoareTripleChecker+Invalid, 1129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 19:56:54,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4996 Valid, 16943 Invalid, 1129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1021 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 19:56:54,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14836 states. [2022-07-13 19:56:55,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14836 to 11578. [2022-07-13 19:56:55,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11578 states, 10745 states have (on average 1.6185202419730107) internal successors, (17391), 10780 states have internal predecessors, (17391), 601 states have call successors, (601), 199 states have call predecessors, (601), 230 states have return successors, (874), 630 states have call predecessors, (874), 599 states have call successors, (874) [2022-07-13 19:56:55,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11578 states to 11578 states and 18866 transitions. [2022-07-13 19:56:55,246 INFO L78 Accepts]: Start accepts. Automaton has 11578 states and 18866 transitions. Word has length 146 [2022-07-13 19:56:55,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:56:55,246 INFO L495 AbstractCegarLoop]: Abstraction has 11578 states and 18866 transitions. [2022-07-13 19:56:55,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:56:55,247 INFO L276 IsEmpty]: Start isEmpty. Operand 11578 states and 18866 transitions. [2022-07-13 19:56:55,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-13 19:56:55,255 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:56:55,255 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:56:55,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 19:56:55,256 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:56:55,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:56:55,256 INFO L85 PathProgramCache]: Analyzing trace with hash 2024179578, now seen corresponding path program 1 times [2022-07-13 19:56:55,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:56:55,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065170903] [2022-07-13 19:56:55,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:56:55,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:56:55,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:55,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:56:55,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:55,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 19:56:55,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:55,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 19:56:55,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:55,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 19:56:55,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:55,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-13 19:56:55,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:55,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:56:55,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:56:55,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065170903] [2022-07-13 19:56:55,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065170903] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:56:55,377 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:56:55,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 19:56:55,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735226030] [2022-07-13 19:56:55,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:56:55,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 19:56:55,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:56:55,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 19:56:55,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 19:56:55,379 INFO L87 Difference]: Start difference. First operand 11578 states and 18866 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:56:58,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:56:58,923 INFO L93 Difference]: Finished difference Result 36057 states and 58041 transitions. [2022-07-13 19:56:58,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 19:56:58,923 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2022-07-13 19:56:58,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:56:59,030 INFO L225 Difference]: With dead ends: 36057 [2022-07-13 19:56:59,031 INFO L226 Difference]: Without dead ends: 26617 [2022-07-13 19:56:59,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 19:56:59,065 INFO L413 NwaCegarLoop]: 4735 mSDtfsCounter, 5184 mSDsluCounter, 17403 mSDsCounter, 0 mSdLazyCounter, 2397 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5200 SdHoareTripleChecker+Valid, 22138 SdHoareTripleChecker+Invalid, 2477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-13 19:56:59,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5200 Valid, 22138 Invalid, 2477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 2397 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-13 19:56:59,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26617 states. [2022-07-13 19:57:00,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26617 to 20796. [2022-07-13 19:57:00,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20796 states, 19163 states have (on average 1.5898867609455722) internal successors, (30467), 19230 states have internal predecessors, (30467), 1177 states have call successors, (1177), 391 states have call predecessors, (1177), 454 states have return successors, (1968), 1238 states have call predecessors, (1968), 1175 states have call successors, (1968) [2022-07-13 19:57:00,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20796 states to 20796 states and 33612 transitions. [2022-07-13 19:57:00,521 INFO L78 Accepts]: Start accepts. Automaton has 20796 states and 33612 transitions. Word has length 146 [2022-07-13 19:57:00,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:57:00,521 INFO L495 AbstractCegarLoop]: Abstraction has 20796 states and 33612 transitions. [2022-07-13 19:57:00,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:57:00,522 INFO L276 IsEmpty]: Start isEmpty. Operand 20796 states and 33612 transitions. [2022-07-13 19:57:00,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-13 19:57:00,534 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:57:00,534 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:57:00,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 19:57:00,535 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:57:00,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:57:00,535 INFO L85 PathProgramCache]: Analyzing trace with hash 181703864, now seen corresponding path program 1 times [2022-07-13 19:57:00,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:57:00,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129794022] [2022-07-13 19:57:00,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:57:00,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:57:00,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:57:00,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:57:00,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:57:00,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 19:57:00,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:57:00,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 19:57:00,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:57:00,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 19:57:00,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:57:00,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-13 19:57:00,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:57:00,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:57:00,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:57:00,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129794022] [2022-07-13 19:57:00,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129794022] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:57:00,654 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:57:00,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 19:57:00,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78122225] [2022-07-13 19:57:00,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:57:00,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 19:57:00,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:57:00,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 19:57:00,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 19:57:00,656 INFO L87 Difference]: Start difference. First operand 20796 states and 33612 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:57:05,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:57:05,571 INFO L93 Difference]: Finished difference Result 69177 states and 111649 transitions. [2022-07-13 19:57:05,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 19:57:05,572 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2022-07-13 19:57:05,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:57:05,802 INFO L225 Difference]: With dead ends: 69177 [2022-07-13 19:57:05,802 INFO L226 Difference]: Without dead ends: 50519 [2022-07-13 19:57:05,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 19:57:05,868 INFO L413 NwaCegarLoop]: 4728 mSDtfsCounter, 5186 mSDsluCounter, 17403 mSDsCounter, 0 mSdLazyCounter, 2386 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5202 SdHoareTripleChecker+Valid, 22131 SdHoareTripleChecker+Invalid, 2469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 2386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-13 19:57:05,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5202 Valid, 22131 Invalid, 2469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 2386 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-13 19:57:05,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50519 states. [2022-07-13 19:57:08,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50519 to 39293. [2022-07-13 19:57:08,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39293 states, 36060 states have (on average 1.5726289517470882) internal successors, (56709), 36191 states have internal predecessors, (56709), 2329 states have call successors, (2329), 775 states have call predecessors, (2329), 902 states have return successors, (4642), 2454 states have call predecessors, (4642), 2327 states have call successors, (4642) [2022-07-13 19:57:08,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39293 states to 39293 states and 63680 transitions. [2022-07-13 19:57:08,277 INFO L78 Accepts]: Start accepts. Automaton has 39293 states and 63680 transitions. Word has length 146 [2022-07-13 19:57:08,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:57:08,277 INFO L495 AbstractCegarLoop]: Abstraction has 39293 states and 63680 transitions. [2022-07-13 19:57:08,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:57:08,277 INFO L276 IsEmpty]: Start isEmpty. Operand 39293 states and 63680 transitions. [2022-07-13 19:57:08,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-13 19:57:08,301 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:57:08,302 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:57:08,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 19:57:08,303 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:57:08,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:57:08,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1540298822, now seen corresponding path program 1 times [2022-07-13 19:57:08,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:57:08,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139531786] [2022-07-13 19:57:08,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:57:08,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:57:08,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:57:08,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:57:08,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:57:08,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 19:57:08,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:57:08,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 19:57:08,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:57:08,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 19:57:08,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:57:08,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-13 19:57:08,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:57:08,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:57:08,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:57:08,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139531786] [2022-07-13 19:57:08,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139531786] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:57:08,415 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:57:08,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 19:57:08,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161931553] [2022-07-13 19:57:08,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:57:08,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 19:57:08,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:57:08,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 19:57:08,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 19:57:08,417 INFO L87 Difference]: Start difference. First operand 39293 states and 63680 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:57:19,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:57:19,162 INFO L93 Difference]: Finished difference Result 151030 states and 244645 transitions. [2022-07-13 19:57:19,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 19:57:19,163 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2022-07-13 19:57:19,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:57:19,679 INFO L225 Difference]: With dead ends: 151030 [2022-07-13 19:57:19,680 INFO L226 Difference]: Without dead ends: 113875 [2022-07-13 19:57:19,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-13 19:57:19,837 INFO L413 NwaCegarLoop]: 4856 mSDtfsCounter, 5263 mSDsluCounter, 17392 mSDsCounter, 0 mSdLazyCounter, 2774 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5278 SdHoareTripleChecker+Valid, 22248 SdHoareTripleChecker+Invalid, 2859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 2774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-13 19:57:19,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5278 Valid, 22248 Invalid, 2859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 2774 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-13 19:57:20,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113875 states. [2022-07-13 19:57:25,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113875 to 74879. [2022-07-13 19:57:25,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74879 states, 68574 states have (on average 1.5615393589407065) internal successors, (107081), 68833 states have internal predecessors, (107081), 4505 states have call successors, (4505), 1543 states have call predecessors, (4505), 1798 states have return successors, (11320), 4758 states have call predecessors, (11320), 4503 states have call successors, (11320) [2022-07-13 19:57:25,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74879 states to 74879 states and 122906 transitions. [2022-07-13 19:57:25,684 INFO L78 Accepts]: Start accepts. Automaton has 74879 states and 122906 transitions. Word has length 146 [2022-07-13 19:57:25,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:57:25,684 INFO L495 AbstractCegarLoop]: Abstraction has 74879 states and 122906 transitions. [2022-07-13 19:57:25,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:57:25,684 INFO L276 IsEmpty]: Start isEmpty. Operand 74879 states and 122906 transitions. [2022-07-13 19:57:25,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-13 19:57:25,726 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:57:25,727 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:57:25,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 19:57:25,727 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:57:25,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:57:25,728 INFO L85 PathProgramCache]: Analyzing trace with hash 388633404, now seen corresponding path program 1 times [2022-07-13 19:57:25,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:57:25,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632696463] [2022-07-13 19:57:25,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:57:25,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:57:25,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:57:25,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:57:25,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:57:25,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 19:57:25,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:57:25,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 19:57:25,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:57:25,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 19:57:25,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:57:25,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-13 19:57:25,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:57:25,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:57:25,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:57:25,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632696463] [2022-07-13 19:57:25,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632696463] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:57:25,861 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:57:25,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 19:57:25,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486325997] [2022-07-13 19:57:25,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:57:25,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 19:57:25,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:57:25,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 19:57:25,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 19:57:25,863 INFO L87 Difference]: Start difference. First operand 74879 states and 122906 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:57:46,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:57:46,043 INFO L93 Difference]: Finished difference Result 290934 states and 478781 transitions. [2022-07-13 19:57:46,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 19:57:46,044 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2022-07-13 19:57:46,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:57:47,175 INFO L225 Difference]: With dead ends: 290934 [2022-07-13 19:57:47,176 INFO L226 Difference]: Without dead ends: 218193 [2022-07-13 19:57:47,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-13 19:57:47,376 INFO L413 NwaCegarLoop]: 4712 mSDtfsCounter, 5471 mSDsluCounter, 17395 mSDsCounter, 0 mSdLazyCounter, 2353 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5497 SdHoareTripleChecker+Valid, 22107 SdHoareTripleChecker+Invalid, 2441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 2353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-13 19:57:47,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5497 Valid, 22107 Invalid, 2441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 2353 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-13 19:57:47,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218193 states.