./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem13_label11.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634e4e14-d2b3-48e0-bed7-def4296ae9e2/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634e4e14-d2b3-48e0-bed7-def4296ae9e2/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634e4e14-d2b3-48e0-bed7-def4296ae9e2/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634e4e14-d2b3-48e0-bed7-def4296ae9e2/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem13_label11.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634e4e14-d2b3-48e0-bed7-def4296ae9e2/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634e4e14-d2b3-48e0-bed7-def4296ae9e2/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --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 63f4b5f458089380e8f0669a95e988a7b7ab051335671065e81323bd858af55a --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 20:12:19,552 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 20:12:19,662 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634e4e14-d2b3-48e0-bed7-def4296ae9e2/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-27 20:12:19,673 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 20:12:19,673 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 20:12:19,703 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 20:12:19,704 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 20:12:19,704 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 20:12:19,705 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 20:12:19,705 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 20:12:19,705 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 20:12:19,705 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 20:12:19,706 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 20:12:19,706 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 20:12:19,706 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 20:12:19,706 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 20:12:19,706 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 20:12:19,707 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 20:12:19,707 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 20:12:19,707 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 20:12:19,707 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 20:12:19,707 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 20:12:19,707 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 20:12:19,707 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 20:12:19,708 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 20:12:19,708 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 20:12:19,708 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 20:12:19,708 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 20:12:19,708 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 20:12:19,708 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:12:19,709 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:12:19,709 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:12:19,709 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:12:19,709 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 20:12:19,709 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:12:19,709 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:12:19,709 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:12:19,710 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:12:19,710 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 20:12:19,710 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 20:12:19,710 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 20:12:19,710 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 20:12:19,710 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 20:12:19,710 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 20:12:19,711 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 20:12:19,711 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 20:12:19,711 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 20:12:19,711 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 20:12:19,711 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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 -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634e4e14-d2b3-48e0-bed7-def4296ae9e2/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness 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 -> 63f4b5f458089380e8f0669a95e988a7b7ab051335671065e81323bd858af55a [2024-11-27 20:12:20,101 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 20:12:20,112 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 20:12:20,115 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 20:12:20,117 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 20:12:20,118 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 20:12:20,119 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634e4e14-d2b3-48e0-bed7-def4296ae9e2/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/eca-rers2012/Problem13_label11.c [2024-11-27 20:12:23,923 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634e4e14-d2b3-48e0-bed7-def4296ae9e2/bin/uautomizer-verify-aQ6SnzHsRB/data/f8f1935e6/635e735d4c7a4af5951550f0b422f77a/FLAG886d7ee60 [2024-11-27 20:12:24,629 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 20:12:24,630 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634e4e14-d2b3-48e0-bed7-def4296ae9e2/sv-benchmarks/c/eca-rers2012/Problem13_label11.c [2024-11-27 20:12:24,677 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634e4e14-d2b3-48e0-bed7-def4296ae9e2/bin/uautomizer-verify-aQ6SnzHsRB/data/f8f1935e6/635e735d4c7a4af5951550f0b422f77a/FLAG886d7ee60 [2024-11-27 20:12:24,705 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634e4e14-d2b3-48e0-bed7-def4296ae9e2/bin/uautomizer-verify-aQ6SnzHsRB/data/f8f1935e6/635e735d4c7a4af5951550f0b422f77a [2024-11-27 20:12:24,708 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 20:12:24,711 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 20:12:24,713 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 20:12:24,713 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 20:12:24,719 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 20:12:24,723 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:12:24" (1/1) ... [2024-11-27 20:12:24,724 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b8179f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:12:24, skipping insertion in model container [2024-11-27 20:12:24,724 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:12:24" (1/1) ... [2024-11-27 20:12:24,931 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 20:12:25,290 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634e4e14-d2b3-48e0-bed7-def4296ae9e2/sv-benchmarks/c/eca-rers2012/Problem13_label11.c[3906,3919] [2024-11-27 20:12:26,846 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:12:26,860 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 20:12:26,899 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634e4e14-d2b3-48e0-bed7-def4296ae9e2/sv-benchmarks/c/eca-rers2012/Problem13_label11.c[3906,3919] [2024-11-27 20:12:27,706 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:12:27,743 INFO L204 MainTranslator]: Completed translation [2024-11-27 20:12:27,744 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:12:27 WrapperNode [2024-11-27 20:12:27,745 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 20:12:27,747 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 20:12:27,747 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 20:12:27,747 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 20:12:27,763 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:12:27" (1/1) ... [2024-11-27 20:12:27,864 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:12:27" (1/1) ... [2024-11-27 20:12:28,633 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5586 [2024-11-27 20:12:28,634 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 20:12:28,636 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 20:12:28,636 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 20:12:28,636 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 20:12:28,647 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:12:27" (1/1) ... [2024-11-27 20:12:28,648 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:12:27" (1/1) ... [2024-11-27 20:12:28,723 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:12:27" (1/1) ... [2024-11-27 20:12:29,044 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-27 20:12:29,045 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:12:27" (1/1) ... [2024-11-27 20:12:29,045 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:12:27" (1/1) ... [2024-11-27 20:12:29,318 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:12:27" (1/1) ... [2024-11-27 20:12:29,342 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:12:27" (1/1) ... [2024-11-27 20:12:29,398 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:12:27" (1/1) ... [2024-11-27 20:12:29,459 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:12:27" (1/1) ... [2024-11-27 20:12:29,486 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:12:27" (1/1) ... [2024-11-27 20:12:29,571 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 20:12:29,573 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 20:12:29,573 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 20:12:29,573 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 20:12:29,574 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:12:27" (1/1) ... [2024-11-27 20:12:29,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:12:29,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634e4e14-d2b3-48e0-bed7-def4296ae9e2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:12:29,619 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634e4e14-d2b3-48e0-bed7-def4296ae9e2/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 20:12:29,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634e4e14-d2b3-48e0-bed7-def4296ae9e2/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 20:12:29,660 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 20:12:29,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 20:12:29,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 20:12:29,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 20:12:29,742 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 20:12:29,744 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 20:12:39,617 INFO L? ?]: Removed 738 outVars from TransFormulas that were not future-live. [2024-11-27 20:12:39,617 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 20:12:39,676 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 20:12:39,677 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-27 20:12:39,677 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:12:39 BoogieIcfgContainer [2024-11-27 20:12:39,677 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 20:12:39,681 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 20:12:39,684 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 20:12:39,692 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 20:12:39,692 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 08:12:24" (1/3) ... [2024-11-27 20:12:39,693 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5534f216 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:12:39, skipping insertion in model container [2024-11-27 20:12:39,694 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:12:27" (2/3) ... [2024-11-27 20:12:39,694 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5534f216 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:12:39, skipping insertion in model container [2024-11-27 20:12:39,695 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:12:39" (3/3) ... [2024-11-27 20:12:39,696 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem13_label11.c [2024-11-27 20:12:39,717 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 20:12:39,720 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem13_label11.c that has 1 procedures, 1098 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-27 20:12:39,849 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 20:12:39,867 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4ecdd89e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 20:12:39,868 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-27 20:12:39,882 INFO L276 IsEmpty]: Start isEmpty. Operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:12:39,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-27 20:12:39,891 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:12:39,892 INFO L218 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] [2024-11-27 20:12:39,892 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:12:39,899 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:12:39,899 INFO L85 PathProgramCache]: Analyzing trace with hash 678582746, now seen corresponding path program 1 times [2024-11-27 20:12:39,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:12:39,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458451161] [2024-11-27 20:12:39,910 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:12:39,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:12:40,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:12:40,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:12:40,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:12:40,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458451161] [2024-11-27 20:12:40,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458451161] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:12:40,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:12:40,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 20:12:40,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273083459] [2024-11-27 20:12:40,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:12:40,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:12:40,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:12:40,440 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:12:40,441 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:12:40,447 INFO L87 Difference]: Start difference. First operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:12:48,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:12:48,077 INFO L93 Difference]: Finished difference Result 3160 states and 5843 transitions. [2024-11-27 20:12:48,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:12:48,080 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-11-27 20:12:48,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:12:48,118 INFO L225 Difference]: With dead ends: 3160 [2024-11-27 20:12:48,118 INFO L226 Difference]: Without dead ends: 1983 [2024-11-27 20:12:48,131 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:12:48,139 INFO L435 NwaCegarLoop]: 243 mSDtfsCounter, 1077 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 3030 mSolverCounterSat, 974 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1077 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 4004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 974 IncrementalHoareTripleChecker+Valid, 3030 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2024-11-27 20:12:48,144 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1077 Valid, 340 Invalid, 4004 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [974 Valid, 3030 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2024-11-27 20:12:48,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1983 states. [2024-11-27 20:12:48,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1983 to 1930. [2024-11-27 20:12:48,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1930 states, 1929 states have (on average 1.7973043027475375) internal successors, (3467), 1929 states have internal predecessors, (3467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:12:48,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1930 states to 1930 states and 3467 transitions. [2024-11-27 20:12:48,360 INFO L78 Accepts]: Start accepts. Automaton has 1930 states and 3467 transitions. Word has length 26 [2024-11-27 20:12:48,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:12:48,361 INFO L471 AbstractCegarLoop]: Abstraction has 1930 states and 3467 transitions. [2024-11-27 20:12:48,361 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:12:48,363 INFO L276 IsEmpty]: Start isEmpty. Operand 1930 states and 3467 transitions. [2024-11-27 20:12:48,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-27 20:12:48,367 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:12:48,368 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:12:48,368 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-27 20:12:48,369 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:12:48,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:12:48,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1189698078, now seen corresponding path program 1 times [2024-11-27 20:12:48,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:12:48,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978250732] [2024-11-27 20:12:48,370 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:12:48,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:12:48,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:12:48,871 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:12:48,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:12:48,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978250732] [2024-11-27 20:12:48,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978250732] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:12:48,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:12:48,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 20:12:48,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383788923] [2024-11-27 20:12:48,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:12:48,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:12:48,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:12:48,876 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:12:48,877 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:12:48,877 INFO L87 Difference]: Start difference. First operand 1930 states and 3467 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:12:54,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:12:54,619 INFO L93 Difference]: Finished difference Result 5456 states and 9917 transitions. [2024-11-27 20:12:54,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:12:54,620 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2024-11-27 20:12:54,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:12:54,637 INFO L225 Difference]: With dead ends: 5456 [2024-11-27 20:12:54,637 INFO L226 Difference]: Without dead ends: 3528 [2024-11-27 20:12:54,639 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:12:54,641 INFO L435 NwaCegarLoop]: 855 mSDtfsCounter, 923 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 2309 mSolverCounterSat, 878 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 923 SdHoareTripleChecker+Valid, 1007 SdHoareTripleChecker+Invalid, 3187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 878 IncrementalHoareTripleChecker+Valid, 2309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2024-11-27 20:12:54,641 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [923 Valid, 1007 Invalid, 3187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [878 Valid, 2309 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2024-11-27 20:12:54,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3528 states. [2024-11-27 20:12:54,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3528 to 3526. [2024-11-27 20:12:54,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3526 states, 3525 states have (on average 1.5670921985815602) internal successors, (5524), 3525 states have internal predecessors, (5524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:12:54,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3526 states to 3526 states and 5524 transitions. [2024-11-27 20:12:54,750 INFO L78 Accepts]: Start accepts. Automaton has 3526 states and 5524 transitions. Word has length 91 [2024-11-27 20:12:54,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:12:54,751 INFO L471 AbstractCegarLoop]: Abstraction has 3526 states and 5524 transitions. [2024-11-27 20:12:54,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:12:54,751 INFO L276 IsEmpty]: Start isEmpty. Operand 3526 states and 5524 transitions. [2024-11-27 20:12:54,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-27 20:12:54,758 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:12:54,758 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:12:54,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 20:12:54,758 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:12:54,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:12:54,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1002704179, now seen corresponding path program 1 times [2024-11-27 20:12:54,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:12:54,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358136249] [2024-11-27 20:12:54,764 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:12:54,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:12:54,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:12:55,066 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:12:55,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:12:55,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358136249] [2024-11-27 20:12:55,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358136249] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:12:55,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:12:55,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 20:12:55,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065589022] [2024-11-27 20:12:55,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:12:55,068 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:12:55,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:12:55,069 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:12:55,069 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:12:55,070 INFO L87 Difference]: Start difference. First operand 3526 states and 5524 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 2 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:13:00,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:13:00,280 INFO L93 Difference]: Finished difference Result 10232 states and 16097 transitions. [2024-11-27 20:13:00,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:13:00,281 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 2 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2024-11-27 20:13:00,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:13:00,311 INFO L225 Difference]: With dead ends: 10232 [2024-11-27 20:13:00,311 INFO L226 Difference]: Without dead ends: 6708 [2024-11-27 20:13:00,317 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:13:00,318 INFO L435 NwaCegarLoop]: 717 mSDtfsCounter, 972 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 2534 mSolverCounterSat, 775 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 972 SdHoareTripleChecker+Valid, 850 SdHoareTripleChecker+Invalid, 3309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 775 IncrementalHoareTripleChecker+Valid, 2534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:13:00,318 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [972 Valid, 850 Invalid, 3309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [775 Valid, 2534 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2024-11-27 20:13:00,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6708 states. [2024-11-27 20:13:00,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6708 to 6700. [2024-11-27 20:13:00,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6700 states, 6699 states have (on average 1.413046723391551) internal successors, (9466), 6699 states have internal predecessors, (9466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:13:00,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6700 states to 6700 states and 9466 transitions. [2024-11-27 20:13:00,490 INFO L78 Accepts]: Start accepts. Automaton has 6700 states and 9466 transitions. Word has length 97 [2024-11-27 20:13:00,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:13:00,490 INFO L471 AbstractCegarLoop]: Abstraction has 6700 states and 9466 transitions. [2024-11-27 20:13:00,491 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 2 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:13:00,491 INFO L276 IsEmpty]: Start isEmpty. Operand 6700 states and 9466 transitions. [2024-11-27 20:13:00,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-11-27 20:13:00,493 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:13:00,493 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:13:00,494 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-27 20:13:00,494 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:13:00,495 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:13:00,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1727159864, now seen corresponding path program 1 times [2024-11-27 20:13:00,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:13:00,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966318962] [2024-11-27 20:13:00,496 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:13:00,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:13:00,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:13:00,821 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:13:00,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:13:00,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966318962] [2024-11-27 20:13:00,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966318962] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:13:00,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:13:00,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 20:13:00,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216742921] [2024-11-27 20:13:00,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:13:00,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:13:00,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:13:00,823 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:13:00,823 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:13:00,823 INFO L87 Difference]: Start difference. First operand 6700 states and 9466 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:13:06,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:13:06,729 INFO L93 Difference]: Finished difference Result 17443 states and 24479 transitions. [2024-11-27 20:13:06,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:13:06,730 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2024-11-27 20:13:06,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:13:06,760 INFO L225 Difference]: With dead ends: 17443 [2024-11-27 20:13:06,760 INFO L226 Difference]: Without dead ends: 10745 [2024-11-27 20:13:06,771 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:13:06,772 INFO L435 NwaCegarLoop]: 834 mSDtfsCounter, 844 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 3291 mSolverCounterSat, 450 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 844 SdHoareTripleChecker+Valid, 965 SdHoareTripleChecker+Invalid, 3741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 450 IncrementalHoareTripleChecker+Valid, 3291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2024-11-27 20:13:06,772 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [844 Valid, 965 Invalid, 3741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [450 Valid, 3291 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2024-11-27 20:13:06,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10745 states. [2024-11-27 20:13:07,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10745 to 10669. [2024-11-27 20:13:07,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10669 states, 10668 states have (on average 1.3562992125984252) internal successors, (14469), 10668 states have internal predecessors, (14469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:13:07,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10669 states to 10669 states and 14469 transitions. [2024-11-27 20:13:07,103 INFO L78 Accepts]: Start accepts. Automaton has 10669 states and 14469 transitions. Word has length 127 [2024-11-27 20:13:07,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:13:07,105 INFO L471 AbstractCegarLoop]: Abstraction has 10669 states and 14469 transitions. [2024-11-27 20:13:07,105 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:13:07,106 INFO L276 IsEmpty]: Start isEmpty. Operand 10669 states and 14469 transitions. [2024-11-27 20:13:07,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-11-27 20:13:07,109 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:13:07,109 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:13:07,109 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-27 20:13:07,109 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:13:07,110 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:13:07,110 INFO L85 PathProgramCache]: Analyzing trace with hash -775349553, now seen corresponding path program 1 times [2024-11-27 20:13:07,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:13:07,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664360006] [2024-11-27 20:13:07,115 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:13:07,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:13:07,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:13:07,952 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:13:07,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:13:07,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664360006] [2024-11-27 20:13:07,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664360006] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:13:07,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:13:07,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 20:13:07,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070511740] [2024-11-27 20:13:07,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:13:07,957 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:13:07,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:13:07,958 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:13:07,958 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:13:07,958 INFO L87 Difference]: Start difference. First operand 10669 states and 14469 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 2 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:13:12,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:13:12,584 INFO L93 Difference]: Finished difference Result 20549 states and 28119 transitions. [2024-11-27 20:13:12,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:13:12,584 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 2 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 137 [2024-11-27 20:13:12,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:13:12,620 INFO L225 Difference]: With dead ends: 20549 [2024-11-27 20:13:12,621 INFO L226 Difference]: Without dead ends: 10669 [2024-11-27 20:13:12,630 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:13:12,631 INFO L435 NwaCegarLoop]: 1083 mSDtfsCounter, 678 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2520 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 1212 SdHoareTripleChecker+Invalid, 2544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 2520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-11-27 20:13:12,631 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [678 Valid, 1212 Invalid, 2544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 2520 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2024-11-27 20:13:12,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10669 states. [2024-11-27 20:13:12,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10669 to 10669. [2024-11-27 20:13:12,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10669 states, 10668 states have (on average 1.3539557555305586) internal successors, (14444), 10668 states have internal predecessors, (14444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:13:12,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10669 states to 10669 states and 14444 transitions. [2024-11-27 20:13:12,859 INFO L78 Accepts]: Start accepts. Automaton has 10669 states and 14444 transitions. Word has length 137 [2024-11-27 20:13:12,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:13:12,860 INFO L471 AbstractCegarLoop]: Abstraction has 10669 states and 14444 transitions. [2024-11-27 20:13:12,860 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 2 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:13:12,860 INFO L276 IsEmpty]: Start isEmpty. Operand 10669 states and 14444 transitions. [2024-11-27 20:13:12,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-11-27 20:13:12,862 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:13:12,862 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:13:12,862 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-27 20:13:12,862 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:13:12,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:13:12,863 INFO L85 PathProgramCache]: Analyzing trace with hash -2076503771, now seen corresponding path program 1 times [2024-11-27 20:13:12,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:13:12,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519768712] [2024-11-27 20:13:12,863 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:13:12,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:13:12,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:13:13,083 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-27 20:13:13,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:13:13,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519768712] [2024-11-27 20:13:13,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519768712] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:13:13,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:13:13,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 20:13:13,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597791901] [2024-11-27 20:13:13,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:13:13,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:13:13,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:13:13,086 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:13:13,086 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:13:13,087 INFO L87 Difference]: Start difference. First operand 10669 states and 14444 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:13:18,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:13:18,250 INFO L93 Difference]: Finished difference Result 30031 states and 41217 transitions. [2024-11-27 20:13:18,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:13:18,251 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2024-11-27 20:13:18,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:13:18,300 INFO L225 Difference]: With dead ends: 30031 [2024-11-27 20:13:18,301 INFO L226 Difference]: Without dead ends: 20151 [2024-11-27 20:13:18,311 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:13:18,313 INFO L435 NwaCegarLoop]: 1071 mSDtfsCounter, 736 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 2527 mSolverCounterSat, 779 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 736 SdHoareTripleChecker+Valid, 1221 SdHoareTripleChecker+Invalid, 3306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 779 IncrementalHoareTripleChecker+Valid, 2527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:13:18,314 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [736 Valid, 1221 Invalid, 3306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [779 Valid, 2527 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2024-11-27 20:13:18,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20151 states. [2024-11-27 20:13:18,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20151 to 19337. [2024-11-27 20:13:18,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19337 states, 19336 states have (on average 1.24244931733554) internal successors, (24024), 19336 states have internal predecessors, (24024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:13:18,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19337 states to 19337 states and 24024 transitions. [2024-11-27 20:13:18,576 INFO L78 Accepts]: Start accepts. Automaton has 19337 states and 24024 transitions. Word has length 151 [2024-11-27 20:13:18,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:13:18,576 INFO L471 AbstractCegarLoop]: Abstraction has 19337 states and 24024 transitions. [2024-11-27 20:13:18,578 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:13:18,578 INFO L276 IsEmpty]: Start isEmpty. Operand 19337 states and 24024 transitions. [2024-11-27 20:13:18,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2024-11-27 20:13:18,582 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:13:18,583 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:13:18,583 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-27 20:13:18,583 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:13:18,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:13:18,584 INFO L85 PathProgramCache]: Analyzing trace with hash -581878337, now seen corresponding path program 1 times [2024-11-27 20:13:18,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:13:18,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200123666] [2024-11-27 20:13:18,584 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:13:18,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:13:18,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:13:19,107 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2024-11-27 20:13:19,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:13:19,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200123666] [2024-11-27 20:13:19,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200123666] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:13:19,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:13:19,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 20:13:19,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996164330] [2024-11-27 20:13:19,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:13:19,108 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:13:19,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:13:19,109 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:13:19,109 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:13:19,109 INFO L87 Difference]: Start difference. First operand 19337 states and 24024 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 2 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:13:24,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:13:24,589 INFO L93 Difference]: Finished difference Result 44989 states and 55628 transitions. [2024-11-27 20:13:24,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:13:24,590 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 2 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 238 [2024-11-27 20:13:24,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:13:24,659 INFO L225 Difference]: With dead ends: 44989 [2024-11-27 20:13:24,659 INFO L226 Difference]: Without dead ends: 26441 [2024-11-27 20:13:24,677 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:13:24,678 INFO L435 NwaCegarLoop]: 1029 mSDtfsCounter, 728 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 2714 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 1213 SdHoareTripleChecker+Invalid, 2895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 2714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2024-11-27 20:13:24,679 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 1213 Invalid, 2895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 2714 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2024-11-27 20:13:24,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26441 states. [2024-11-27 20:13:24,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26441 to 26434. [2024-11-27 20:13:25,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26434 states, 26433 states have (on average 1.200582605076987) internal successors, (31735), 26433 states have internal predecessors, (31735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:13:25,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26434 states to 26434 states and 31735 transitions. [2024-11-27 20:13:25,055 INFO L78 Accepts]: Start accepts. Automaton has 26434 states and 31735 transitions. Word has length 238 [2024-11-27 20:13:25,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:13:25,056 INFO L471 AbstractCegarLoop]: Abstraction has 26434 states and 31735 transitions. [2024-11-27 20:13:25,056 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 2 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:13:25,057 INFO L276 IsEmpty]: Start isEmpty. Operand 26434 states and 31735 transitions. [2024-11-27 20:13:25,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2024-11-27 20:13:25,061 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:13:25,061 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:13:25,062 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-27 20:13:25,062 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:13:25,062 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:13:25,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1834844219, now seen corresponding path program 1 times [2024-11-27 20:13:25,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:13:25,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091189495] [2024-11-27 20:13:25,063 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:13:25,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:13:25,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:13:25,328 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 135 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:13:25,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:13:25,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091189495] [2024-11-27 20:13:25,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091189495] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:13:25,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:13:25,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:13:25,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817643797] [2024-11-27 20:13:25,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:13:25,329 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:13:25,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:13:25,330 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:13:25,331 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:13:25,331 INFO L87 Difference]: Start difference. First operand 26434 states and 31735 transitions. Second operand has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:13:31,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:13:31,453 INFO L93 Difference]: Finished difference Result 72535 states and 87971 transitions. [2024-11-27 20:13:31,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:13:31,454 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 240 [2024-11-27 20:13:31,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:13:31,531 INFO L225 Difference]: With dead ends: 72535 [2024-11-27 20:13:31,531 INFO L226 Difference]: Without dead ends: 46103 [2024-11-27 20:13:31,560 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:13:31,561 INFO L435 NwaCegarLoop]: 1848 mSDtfsCounter, 841 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 2479 mSolverCounterSat, 806 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 841 SdHoareTripleChecker+Valid, 1984 SdHoareTripleChecker+Invalid, 3285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 806 IncrementalHoareTripleChecker+Valid, 2479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2024-11-27 20:13:31,561 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [841 Valid, 1984 Invalid, 3285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [806 Valid, 2479 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2024-11-27 20:13:31,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46103 states. [2024-11-27 20:13:32,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46103 to 43733. [2024-11-27 20:13:32,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43733 states, 43732 states have (on average 1.1691210097868838) internal successors, (51128), 43732 states have internal predecessors, (51128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:13:32,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43733 states to 43733 states and 51128 transitions. [2024-11-27 20:13:32,156 INFO L78 Accepts]: Start accepts. Automaton has 43733 states and 51128 transitions. Word has length 240 [2024-11-27 20:13:32,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:13:32,157 INFO L471 AbstractCegarLoop]: Abstraction has 43733 states and 51128 transitions. [2024-11-27 20:13:32,157 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:13:32,157 INFO L276 IsEmpty]: Start isEmpty. Operand 43733 states and 51128 transitions. [2024-11-27 20:13:32,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2024-11-27 20:13:32,162 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:13:32,164 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:13:32,164 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-27 20:13:32,165 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:13:32,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:13:32,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1777805807, now seen corresponding path program 1 times [2024-11-27 20:13:32,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:13:32,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8141833] [2024-11-27 20:13:32,167 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:13:32,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:13:32,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:13:32,704 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:13:32,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:13:32,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8141833] [2024-11-27 20:13:32,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8141833] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:13:32,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:13:32,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:13:32,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18580325] [2024-11-27 20:13:32,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:13:32,705 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:13:32,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:13:32,706 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:13:32,706 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:13:32,706 INFO L87 Difference]: Start difference. First operand 43733 states and 51128 transitions. Second operand has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:13:38,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:13:38,613 INFO L93 Difference]: Finished difference Result 106364 states and 126458 transitions. [2024-11-27 20:13:38,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:13:38,615 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 253 [2024-11-27 20:13:38,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:13:38,679 INFO L225 Difference]: With dead ends: 106364 [2024-11-27 20:13:38,679 INFO L226 Difference]: Without dead ends: 63420 [2024-11-27 20:13:38,702 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:13:38,703 INFO L435 NwaCegarLoop]: 812 mSDtfsCounter, 823 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 2385 mSolverCounterSat, 900 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 823 SdHoareTripleChecker+Valid, 930 SdHoareTripleChecker+Invalid, 3285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 900 IncrementalHoareTripleChecker+Valid, 2385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2024-11-27 20:13:38,703 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [823 Valid, 930 Invalid, 3285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [900 Valid, 2385 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2024-11-27 20:13:38,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63420 states. [2024-11-27 20:13:39,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63420 to 61048. [2024-11-27 20:13:39,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61048 states, 61047 states have (on average 1.1609579504316347) internal successors, (70873), 61047 states have internal predecessors, (70873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:13:39,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61048 states to 61048 states and 70873 transitions. [2024-11-27 20:13:39,608 INFO L78 Accepts]: Start accepts. Automaton has 61048 states and 70873 transitions. Word has length 253 [2024-11-27 20:13:39,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:13:39,609 INFO L471 AbstractCegarLoop]: Abstraction has 61048 states and 70873 transitions. [2024-11-27 20:13:39,609 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:13:39,609 INFO L276 IsEmpty]: Start isEmpty. Operand 61048 states and 70873 transitions. [2024-11-27 20:13:39,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2024-11-27 20:13:39,616 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:13:39,616 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:13:39,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-27 20:13:39,617 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:13:39,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:13:39,618 INFO L85 PathProgramCache]: Analyzing trace with hash 796596, now seen corresponding path program 1 times [2024-11-27 20:13:39,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:13:39,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726904076] [2024-11-27 20:13:39,618 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:13:39,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:13:39,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:13:40,271 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 323 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-27 20:13:40,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:13:40,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726904076] [2024-11-27 20:13:40,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726904076] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:13:40,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:13:40,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:13:40,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762329667] [2024-11-27 20:13:40,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:13:40,273 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:13:40,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:13:40,274 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:13:40,274 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:13:40,275 INFO L87 Difference]: Start difference. First operand 61048 states and 70873 transitions. Second operand has 4 states, 4 states have (on average 72.75) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:13:51,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:13:51,511 INFO L93 Difference]: Finished difference Result 160082 states and 186750 transitions. [2024-11-27 20:13:51,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:13:51,512 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 314 [2024-11-27 20:13:51,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:13:51,609 INFO L225 Difference]: With dead ends: 160082 [2024-11-27 20:13:51,609 INFO L226 Difference]: Without dead ends: 99823 [2024-11-27 20:13:51,642 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:13:51,643 INFO L435 NwaCegarLoop]: 860 mSDtfsCounter, 1700 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 6252 mSolverCounterSat, 995 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1700 SdHoareTripleChecker+Valid, 1057 SdHoareTripleChecker+Invalid, 7247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 995 IncrementalHoareTripleChecker+Valid, 6252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2024-11-27 20:13:51,643 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1700 Valid, 1057 Invalid, 7247 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [995 Valid, 6252 Invalid, 0 Unknown, 0 Unchecked, 10.4s Time] [2024-11-27 20:13:51,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99823 states. [2024-11-27 20:13:52,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99823 to 76803. [2024-11-27 20:13:52,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76803 states, 76802 states have (on average 1.1463763964480091) internal successors, (88044), 76802 states have internal predecessors, (88044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:13:52,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76803 states to 76803 states and 88044 transitions. [2024-11-27 20:13:52,861 INFO L78 Accepts]: Start accepts. Automaton has 76803 states and 88044 transitions. Word has length 314 [2024-11-27 20:13:52,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:13:52,862 INFO L471 AbstractCegarLoop]: Abstraction has 76803 states and 88044 transitions. [2024-11-27 20:13:52,862 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:13:52,862 INFO L276 IsEmpty]: Start isEmpty. Operand 76803 states and 88044 transitions. [2024-11-27 20:13:52,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2024-11-27 20:13:52,864 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:13:52,864 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:13:52,865 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-27 20:13:52,865 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:13:52,865 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:13:52,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1476485299, now seen corresponding path program 1 times [2024-11-27 20:13:52,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:13:52,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176110961] [2024-11-27 20:13:52,866 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:13:52,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:13:52,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:13:55,224 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 176 proven. 113 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-27 20:13:55,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:13:55,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176110961] [2024-11-27 20:13:55,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176110961] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:13:55,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1875201650] [2024-11-27 20:13:55,225 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:13:55,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:13:55,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634e4e14-d2b3-48e0-bed7-def4296ae9e2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:13:55,230 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634e4e14-d2b3-48e0-bed7-def4296ae9e2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:13:55,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634e4e14-d2b3-48e0-bed7-def4296ae9e2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 20:13:55,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:13:55,449 INFO L256 TraceCheckSpWp]: Trace formula consists of 469 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-27 20:13:55,461 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:13:55,633 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 200 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2024-11-27 20:13:55,633 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:13:55,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1875201650] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:13:55,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:13:55,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2024-11-27 20:13:55,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337713424] [2024-11-27 20:13:55,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:13:55,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:13:55,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:13:55,635 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:13:55,635 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-27 20:13:55,636 INFO L87 Difference]: Start difference. First operand 76803 states and 88044 transitions. Second operand has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:14:01,768 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-27 20:14:01,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:14:01,979 INFO L93 Difference]: Finished difference Result 152806 states and 175284 transitions. [2024-11-27 20:14:01,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:14:01,980 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 332 [2024-11-27 20:14:01,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:14:02,071 INFO L225 Difference]: With dead ends: 152806 [2024-11-27 20:14:02,071 INFO L226 Difference]: Without dead ends: 76792 [2024-11-27 20:14:02,110 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 331 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-27 20:14:02,111 INFO L435 NwaCegarLoop]: 681 mSDtfsCounter, 1073 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 2388 mSolverCounterSat, 532 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1073 SdHoareTripleChecker+Valid, 814 SdHoareTripleChecker+Invalid, 2920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 532 IncrementalHoareTripleChecker+Valid, 2388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2024-11-27 20:14:02,111 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1073 Valid, 814 Invalid, 2920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [532 Valid, 2388 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2024-11-27 20:14:02,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76792 states. [2024-11-27 20:14:03,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76792 to 76789. [2024-11-27 20:14:03,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76789 states, 76788 states have (on average 1.1087149033703183) internal successors, (85136), 76788 states have internal predecessors, (85136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:14:03,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76789 states to 76789 states and 85136 transitions. [2024-11-27 20:14:03,176 INFO L78 Accepts]: Start accepts. Automaton has 76789 states and 85136 transitions. Word has length 332 [2024-11-27 20:14:03,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:14:03,177 INFO L471 AbstractCegarLoop]: Abstraction has 76789 states and 85136 transitions. [2024-11-27 20:14:03,177 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:14:03,177 INFO L276 IsEmpty]: Start isEmpty. Operand 76789 states and 85136 transitions. [2024-11-27 20:14:03,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2024-11-27 20:14:03,192 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:14:03,193 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:14:03,220 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634e4e14-d2b3-48e0-bed7-def4296ae9e2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-27 20:14:03,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634e4e14-d2b3-48e0-bed7-def4296ae9e2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:14:03,393 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:14:03,397 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:14:03,397 INFO L85 PathProgramCache]: Analyzing trace with hash -904685255, now seen corresponding path program 1 times [2024-11-27 20:14:03,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:14:03,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357694959] [2024-11-27 20:14:03,397 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:14:03,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:14:03,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:14:05,496 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 273 proven. 110 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-27 20:14:05,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:14:05,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357694959] [2024-11-27 20:14:05,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357694959] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:14:05,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1403283547] [2024-11-27 20:14:05,497 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:14:05,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:14:05,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634e4e14-d2b3-48e0-bed7-def4296ae9e2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:14:05,500 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634e4e14-d2b3-48e0-bed7-def4296ae9e2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:14:05,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634e4e14-d2b3-48e0-bed7-def4296ae9e2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 20:14:05,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:14:05,738 INFO L256 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-27 20:14:05,753 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:14:06,064 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 270 proven. 0 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2024-11-27 20:14:06,064 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:14:06,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1403283547] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:14:06,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:14:06,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-11-27 20:14:06,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853392117] [2024-11-27 20:14:06,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:14:06,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:14:06,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:14:06,066 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:14:06,066 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:14:06,067 INFO L87 Difference]: Start difference. First operand 76789 states and 85136 transitions. Second operand has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:14:10,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:14:10,994 INFO L93 Difference]: Finished difference Result 152787 states and 169477 transitions. [2024-11-27 20:14:10,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:14:10,995 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 381 [2024-11-27 20:14:10,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:14:11,075 INFO L225 Difference]: With dead ends: 152787 [2024-11-27 20:14:11,075 INFO L226 Difference]: Without dead ends: 76787 [2024-11-27 20:14:11,104 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 380 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:14:11,105 INFO L435 NwaCegarLoop]: 1343 mSDtfsCounter, 1084 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 2462 mSolverCounterSat, 444 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1084 SdHoareTripleChecker+Valid, 1422 SdHoareTripleChecker+Invalid, 2906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 444 IncrementalHoareTripleChecker+Valid, 2462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-11-27 20:14:11,105 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1084 Valid, 1422 Invalid, 2906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [444 Valid, 2462 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2024-11-27 20:14:11,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76787 states. [2024-11-27 20:14:11,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76787 to 76786. [2024-11-27 20:14:11,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76786 states, 76785 states have (on average 1.0866184801719085) internal successors, (83436), 76785 states have internal predecessors, (83436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:14:11,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76786 states to 76786 states and 83436 transitions. [2024-11-27 20:14:11,909 INFO L78 Accepts]: Start accepts. Automaton has 76786 states and 83436 transitions. Word has length 381 [2024-11-27 20:14:11,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:14:11,910 INFO L471 AbstractCegarLoop]: Abstraction has 76786 states and 83436 transitions. [2024-11-27 20:14:11,910 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:14:11,911 INFO L276 IsEmpty]: Start isEmpty. Operand 76786 states and 83436 transitions. [2024-11-27 20:14:11,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2024-11-27 20:14:11,916 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:14:11,917 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:14:11,930 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634e4e14-d2b3-48e0-bed7-def4296ae9e2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-27 20:14:12,117 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634e4e14-d2b3-48e0-bed7-def4296ae9e2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:14:12,117 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:14:12,118 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:14:12,118 INFO L85 PathProgramCache]: Analyzing trace with hash 191330175, now seen corresponding path program 1 times [2024-11-27 20:14:12,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:14:12,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904248183] [2024-11-27 20:14:12,118 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:14:12,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:14:12,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:14:12,646 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 424 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2024-11-27 20:14:12,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:14:12,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904248183] [2024-11-27 20:14:12,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904248183] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:14:12,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:14:12,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:14:12,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870192133] [2024-11-27 20:14:12,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:14:12,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:14:12,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:14:12,649 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:14:12,649 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:14:12,649 INFO L87 Difference]: Start difference. First operand 76786 states and 83436 transitions. Second operand has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:14:17,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:14:17,808 INFO L93 Difference]: Finished difference Result 177191 states and 193904 transitions. [2024-11-27 20:14:17,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:14:17,809 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 382 [2024-11-27 20:14:17,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:14:17,899 INFO L225 Difference]: With dead ends: 177191 [2024-11-27 20:14:17,899 INFO L226 Difference]: Without dead ends: 101194 [2024-11-27 20:14:17,928 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:14:17,929 INFO L435 NwaCegarLoop]: 812 mSDtfsCounter, 888 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 2418 mSolverCounterSat, 932 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 888 SdHoareTripleChecker+Valid, 895 SdHoareTripleChecker+Invalid, 3350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 932 IncrementalHoareTripleChecker+Valid, 2418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-11-27 20:14:17,929 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [888 Valid, 895 Invalid, 3350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [932 Valid, 2418 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2024-11-27 20:14:17,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101194 states. [2024-11-27 20:14:18,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101194 to 99602. [2024-11-27 20:14:18,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99602 states, 99601 states have (on average 1.0899087358560657) internal successors, (108556), 99601 states have internal predecessors, (108556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:14:19,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99602 states to 99602 states and 108556 transitions. [2024-11-27 20:14:19,333 INFO L78 Accepts]: Start accepts. Automaton has 99602 states and 108556 transitions. Word has length 382 [2024-11-27 20:14:19,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:14:19,334 INFO L471 AbstractCegarLoop]: Abstraction has 99602 states and 108556 transitions. [2024-11-27 20:14:19,334 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:14:19,334 INFO L276 IsEmpty]: Start isEmpty. Operand 99602 states and 108556 transitions. [2024-11-27 20:14:19,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 457 [2024-11-27 20:14:19,351 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:14:19,352 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:14:19,352 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-27 20:14:19,352 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:14:19,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:14:19,353 INFO L85 PathProgramCache]: Analyzing trace with hash 348171354, now seen corresponding path program 1 times [2024-11-27 20:14:19,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:14:19,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666387744] [2024-11-27 20:14:19,353 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:14:19,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:14:19,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:14:21,229 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 288 proven. 110 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-27 20:14:21,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:14:21,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666387744] [2024-11-27 20:14:21,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666387744] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:14:21,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50719014] [2024-11-27 20:14:21,230 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:14:21,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:14:21,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634e4e14-d2b3-48e0-bed7-def4296ae9e2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:14:21,233 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634e4e14-d2b3-48e0-bed7-def4296ae9e2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:14:21,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634e4e14-d2b3-48e0-bed7-def4296ae9e2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 20:14:21,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:14:21,528 INFO L256 TraceCheckSpWp]: Trace formula consists of 591 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-27 20:14:21,540 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:14:21,975 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 309 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2024-11-27 20:14:21,975 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:14:21,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [50719014] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:14:21,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:14:21,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-11-27 20:14:21,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980701148] [2024-11-27 20:14:21,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:14:21,979 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:14:21,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:14:21,980 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:14:21,980 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:14:21,980 INFO L87 Difference]: Start difference. First operand 99602 states and 108556 transitions. Second operand has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:14:26,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:14:26,946 INFO L93 Difference]: Finished difference Result 195242 states and 214131 transitions. [2024-11-27 20:14:26,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:14:26,947 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 456 [2024-11-27 20:14:26,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:14:27,092 INFO L225 Difference]: With dead ends: 195242 [2024-11-27 20:14:27,092 INFO L226 Difference]: Without dead ends: 111390 [2024-11-27 20:14:27,127 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 460 GetRequests, 455 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:14:27,128 INFO L435 NwaCegarLoop]: 382 mSDtfsCounter, 1133 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 2261 mSolverCounterSat, 846 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1133 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 3107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 846 IncrementalHoareTripleChecker+Valid, 2261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-11-27 20:14:27,128 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1133 Valid, 396 Invalid, 3107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [846 Valid, 2261 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2024-11-27 20:14:27,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111390 states. [2024-11-27 20:14:28,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111390 to 111390. [2024-11-27 20:14:28,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111390 states, 111389 states have (on average 1.0825575236333929) internal successors, (120585), 111389 states have internal predecessors, (120585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:14:28,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111390 states to 111390 states and 120585 transitions. [2024-11-27 20:14:28,643 INFO L78 Accepts]: Start accepts. Automaton has 111390 states and 120585 transitions. Word has length 456 [2024-11-27 20:14:28,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:14:28,644 INFO L471 AbstractCegarLoop]: Abstraction has 111390 states and 120585 transitions. [2024-11-27 20:14:28,644 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:14:28,644 INFO L276 IsEmpty]: Start isEmpty. Operand 111390 states and 120585 transitions. [2024-11-27 20:14:28,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2024-11-27 20:14:28,656 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:14:28,656 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:14:28,663 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634e4e14-d2b3-48e0-bed7-def4296ae9e2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-27 20:14:28,860 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634e4e14-d2b3-48e0-bed7-def4296ae9e2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:14:28,860 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:14:28,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:14:28,861 INFO L85 PathProgramCache]: Analyzing trace with hash 443995640, now seen corresponding path program 1 times [2024-11-27 20:14:28,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:14:28,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450234347] [2024-11-27 20:14:28,862 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:14:28,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:14:29,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:14:29,690 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 408 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2024-11-27 20:14:29,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:14:29,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450234347] [2024-11-27 20:14:29,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450234347] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:14:29,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:14:29,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:14:29,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643916484] [2024-11-27 20:14:29,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:14:29,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:14:29,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:14:29,693 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:14:29,693 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:14:29,693 INFO L87 Difference]: Start difference. First operand 111390 states and 120585 transitions. Second operand has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:14:35,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:14:35,086 INFO L93 Difference]: Finished difference Result 245599 states and 266947 transitions. [2024-11-27 20:14:35,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:14:35,086 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 474 [2024-11-27 20:14:35,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:14:35,212 INFO L225 Difference]: With dead ends: 245599 [2024-11-27 20:14:35,212 INFO L226 Difference]: Without dead ends: 134211 [2024-11-27 20:14:35,249 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:14:35,249 INFO L435 NwaCegarLoop]: 1709 mSDtfsCounter, 728 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 2493 mSolverCounterSat, 672 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 1844 SdHoareTripleChecker+Invalid, 3165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 672 IncrementalHoareTripleChecker+Valid, 2493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-11-27 20:14:35,250 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 1844 Invalid, 3165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [672 Valid, 2493 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2024-11-27 20:14:35,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134211 states. [2024-11-27 20:14:36,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134211 to 134198. [2024-11-27 20:14:36,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134198 states, 134197 states have (on average 1.0705529929879207) internal successors, (143665), 134197 states have internal predecessors, (143665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:14:37,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134198 states to 134198 states and 143665 transitions. [2024-11-27 20:14:37,011 INFO L78 Accepts]: Start accepts. Automaton has 134198 states and 143665 transitions. Word has length 474 [2024-11-27 20:14:37,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:14:37,012 INFO L471 AbstractCegarLoop]: Abstraction has 134198 states and 143665 transitions. [2024-11-27 20:14:37,012 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:14:37,012 INFO L276 IsEmpty]: Start isEmpty. Operand 134198 states and 143665 transitions. [2024-11-27 20:14:37,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 512 [2024-11-27 20:14:37,025 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:14:37,027 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:14:37,027 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-27 20:14:37,027 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:14:37,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:14:37,028 INFO L85 PathProgramCache]: Analyzing trace with hash 649832757, now seen corresponding path program 1 times [2024-11-27 20:14:37,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:14:37,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023189769] [2024-11-27 20:14:37,028 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:14:37,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:14:37,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:14:37,786 INFO L134 CoverageAnalysis]: Checked inductivity of 876 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 757 trivial. 0 not checked. [2024-11-27 20:14:37,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:14:37,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023189769] [2024-11-27 20:14:37,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023189769] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:14:37,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:14:37,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 20:14:37,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453643222] [2024-11-27 20:14:37,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:14:37,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:14:37,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:14:37,789 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:14:37,789 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:14:37,789 INFO L87 Difference]: Start difference. First operand 134198 states and 143665 transitions. Second operand has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 2 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:14:41,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:14:41,185 INFO L93 Difference]: Finished difference Result 248696 states and 266866 transitions. [2024-11-27 20:14:41,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:14:41,186 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 2 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 511 [2024-11-27 20:14:41,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:14:41,296 INFO L225 Difference]: With dead ends: 248696 [2024-11-27 20:14:41,296 INFO L226 Difference]: Without dead ends: 133395 [2024-11-27 20:14:41,328 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:14:41,328 INFO L435 NwaCegarLoop]: 280 mSDtfsCounter, 1614 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1498 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1614 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 1510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-27 20:14:41,329 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1614 Valid, 280 Invalid, 1510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1498 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-27 20:14:41,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133395 states. [2024-11-27 20:14:42,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133395 to 133394. [2024-11-27 20:14:42,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133394 states, 133393 states have (on average 1.0695688679316007) internal successors, (142673), 133393 states have internal predecessors, (142673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:14:43,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133394 states to 133394 states and 142673 transitions. [2024-11-27 20:14:43,044 INFO L78 Accepts]: Start accepts. Automaton has 133394 states and 142673 transitions. Word has length 511 [2024-11-27 20:14:43,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:14:43,045 INFO L471 AbstractCegarLoop]: Abstraction has 133394 states and 142673 transitions. [2024-11-27 20:14:43,045 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 2 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:14:43,045 INFO L276 IsEmpty]: Start isEmpty. Operand 133394 states and 142673 transitions. [2024-11-27 20:14:43,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 526 [2024-11-27 20:14:43,062 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:14:43,062 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:14:43,062 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-27 20:14:43,062 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:14:43,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:14:43,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1942642485, now seen corresponding path program 1 times [2024-11-27 20:14:43,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:14:43,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645523150] [2024-11-27 20:14:43,063 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:14:43,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:14:43,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:14:44,292 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 408 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2024-11-27 20:14:44,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:14:44,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645523150] [2024-11-27 20:14:44,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645523150] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:14:44,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:14:44,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:14:44,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226369524] [2024-11-27 20:14:44,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:14:44,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:14:44,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:14:44,296 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:14:44,297 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:14:44,297 INFO L87 Difference]: Start difference. First operand 133394 states and 142673 transitions. Second operand has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:14:49,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:14:49,542 INFO L93 Difference]: Finished difference Result 248682 states and 266691 transitions. [2024-11-27 20:14:49,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:14:49,542 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 525 [2024-11-27 20:14:49,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:14:49,651 INFO L225 Difference]: With dead ends: 248682 [2024-11-27 20:14:49,651 INFO L226 Difference]: Without dead ends: 134185 [2024-11-27 20:14:49,681 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:14:49,682 INFO L435 NwaCegarLoop]: 1767 mSDtfsCounter, 609 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 2484 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 609 SdHoareTripleChecker+Valid, 1892 SdHoareTripleChecker+Invalid, 2498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 2484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-27 20:14:49,682 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [609 Valid, 1892 Invalid, 2498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 2484 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2024-11-27 20:14:49,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134185 states. [2024-11-27 20:14:50,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134185 to 134181. [2024-11-27 20:14:50,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134181 states, 134180 states have (on average 1.069384409002832) internal successors, (143490), 134180 states have internal predecessors, (143490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:14:51,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134181 states to 134181 states and 143490 transitions. [2024-11-27 20:14:51,032 INFO L78 Accepts]: Start accepts. Automaton has 134181 states and 143490 transitions. Word has length 525 [2024-11-27 20:14:51,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:14:51,033 INFO L471 AbstractCegarLoop]: Abstraction has 134181 states and 143490 transitions. [2024-11-27 20:14:51,033 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:14:51,033 INFO L276 IsEmpty]: Start isEmpty. Operand 134181 states and 143490 transitions. [2024-11-27 20:14:51,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 586 [2024-11-27 20:14:51,050 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:14:51,050 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:14:51,050 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-27 20:14:51,050 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:14:51,051 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:14:51,051 INFO L85 PathProgramCache]: Analyzing trace with hash 69110433, now seen corresponding path program 1 times [2024-11-27 20:14:51,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:14:51,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443044929] [2024-11-27 20:14:51,051 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:14:51,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:14:51,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:14:52,870 INFO L134 CoverageAnalysis]: Checked inductivity of 819 backedges. 526 proven. 110 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2024-11-27 20:14:52,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:14:52,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443044929] [2024-11-27 20:14:52,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443044929] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:14:52,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1181603304] [2024-11-27 20:14:52,871 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:14:52,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:14:52,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634e4e14-d2b3-48e0-bed7-def4296ae9e2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:14:52,874 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634e4e14-d2b3-48e0-bed7-def4296ae9e2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:14:52,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634e4e14-d2b3-48e0-bed7-def4296ae9e2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-27 20:14:53,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:14:53,202 INFO L256 TraceCheckSpWp]: Trace formula consists of 746 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-27 20:14:53,213 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:14:53,287 INFO L134 CoverageAnalysis]: Checked inductivity of 819 backedges. 523 proven. 0 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2024-11-27 20:14:53,287 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:14:53,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1181603304] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:14:53,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:14:53,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-11-27 20:14:53,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208988319] [2024-11-27 20:14:53,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:14:53,289 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:14:53,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:14:53,289 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:14:53,290 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-27 20:14:53,290 INFO L87 Difference]: Start difference. First operand 134181 states and 143490 transitions. Second operand has 3 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:14:59,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:14:59,647 INFO L93 Difference]: Finished difference Result 298254 states and 320099 transitions. [2024-11-27 20:14:59,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:14:59,648 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 585 [2024-11-27 20:14:59,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:14:59,845 INFO L225 Difference]: With dead ends: 298254 [2024-11-27 20:14:59,845 INFO L226 Difference]: Without dead ends: 180607 [2024-11-27 20:14:59,907 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 590 GetRequests, 584 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-27 20:14:59,907 INFO L435 NwaCegarLoop]: 1602 mSDtfsCounter, 906 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 2528 mSolverCounterSat, 715 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 906 SdHoareTripleChecker+Valid, 1709 SdHoareTripleChecker+Invalid, 3243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 715 IncrementalHoareTripleChecker+Valid, 2528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2024-11-27 20:14:59,908 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [906 Valid, 1709 Invalid, 3243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [715 Valid, 2528 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2024-11-27 20:15:00,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180607 states. [2024-11-27 20:15:01,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180607 to 164862. [2024-11-27 20:15:01,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164862 states, 164861 states have (on average 1.061172745525018) internal successors, (174946), 164861 states have internal predecessors, (174946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:15:02,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164862 states to 164862 states and 174946 transitions. [2024-11-27 20:15:02,085 INFO L78 Accepts]: Start accepts. Automaton has 164862 states and 174946 transitions. Word has length 585 [2024-11-27 20:15:02,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:15:02,085 INFO L471 AbstractCegarLoop]: Abstraction has 164862 states and 174946 transitions. [2024-11-27 20:15:02,085 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:15:02,085 INFO L276 IsEmpty]: Start isEmpty. Operand 164862 states and 174946 transitions. [2024-11-27 20:15:02,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 588 [2024-11-27 20:15:02,103 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:15:02,103 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:15:02,111 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634e4e14-d2b3-48e0-bed7-def4296ae9e2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-27 20:15:02,303 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634e4e14-d2b3-48e0-bed7-def4296ae9e2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-27 20:15:02,304 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:15:02,304 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:15:02,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1211656569, now seen corresponding path program 1 times [2024-11-27 20:15:02,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:15:02,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674176311] [2024-11-27 20:15:02,305 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:15:02,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:15:02,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:15:04,325 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 359 proven. 110 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-27 20:15:04,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:15:04,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674176311] [2024-11-27 20:15:04,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674176311] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:15:04,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [698111667] [2024-11-27 20:15:04,326 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:15:04,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:15:04,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634e4e14-d2b3-48e0-bed7-def4296ae9e2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:15:04,328 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634e4e14-d2b3-48e0-bed7-def4296ae9e2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:15:04,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634e4e14-d2b3-48e0-bed7-def4296ae9e2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-27 20:15:04,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:15:04,650 INFO L256 TraceCheckSpWp]: Trace formula consists of 723 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-27 20:15:04,660 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:15:05,034 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 345 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-11-27 20:15:05,035 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:15:05,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [698111667] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:15:05,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:15:05,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-11-27 20:15:05,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021285343] [2024-11-27 20:15:05,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:15:05,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:15:05,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:15:05,037 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:15:05,037 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:15:05,038 INFO L87 Difference]: Start difference. First operand 164862 states and 174946 transitions. Second operand has 3 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:15:11,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:15:11,012 INFO L93 Difference]: Finished difference Result 328149 states and 348282 transitions. [2024-11-27 20:15:11,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:15:11,013 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 587 [2024-11-27 20:15:11,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:15:11,154 INFO L225 Difference]: With dead ends: 328149 [2024-11-27 20:15:11,155 INFO L226 Difference]: Without dead ends: 164076 [2024-11-27 20:15:11,202 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 591 GetRequests, 586 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:15:11,203 INFO L435 NwaCegarLoop]: 1656 mSDtfsCounter, 692 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 2433 mSolverCounterSat, 601 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 692 SdHoareTripleChecker+Valid, 1781 SdHoareTripleChecker+Invalid, 3034 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 601 IncrementalHoareTripleChecker+Valid, 2433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-11-27 20:15:11,203 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [692 Valid, 1781 Invalid, 3034 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [601 Valid, 2433 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2024-11-27 20:15:11,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164076 states. [2024-11-27 20:15:12,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164076 to 160134. [2024-11-27 20:15:12,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160134 states, 160133 states have (on average 1.047660382307207) internal successors, (167765), 160133 states have internal predecessors, (167765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:15:13,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160134 states to 160134 states and 167765 transitions. [2024-11-27 20:15:13,100 INFO L78 Accepts]: Start accepts. Automaton has 160134 states and 167765 transitions. Word has length 587 [2024-11-27 20:15:13,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:15:13,101 INFO L471 AbstractCegarLoop]: Abstraction has 160134 states and 167765 transitions. [2024-11-27 20:15:13,101 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:15:13,101 INFO L276 IsEmpty]: Start isEmpty. Operand 160134 states and 167765 transitions. [2024-11-27 20:15:13,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 629 [2024-11-27 20:15:13,121 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:15:13,122 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:15:13,129 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634e4e14-d2b3-48e0-bed7-def4296ae9e2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-27 20:15:13,322 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634e4e14-d2b3-48e0-bed7-def4296ae9e2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:15:13,322 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:15:13,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:15:13,323 INFO L85 PathProgramCache]: Analyzing trace with hash -909578388, now seen corresponding path program 1 times [2024-11-27 20:15:13,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:15:13,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487697475] [2024-11-27 20:15:13,323 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:15:13,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:15:13,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:15:15,343 INFO L134 CoverageAnalysis]: Checked inductivity of 1027 backedges. 794 proven. 0 refuted. 0 times theorem prover too weak. 233 trivial. 0 not checked. [2024-11-27 20:15:15,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:15:15,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487697475] [2024-11-27 20:15:15,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487697475] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:15:15,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:15:15,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 20:15:15,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545654779] [2024-11-27 20:15:15,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:15:15,345 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:15:15,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:15:15,346 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:15:15,346 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:15:15,346 INFO L87 Difference]: Start difference. First operand 160134 states and 167765 transitions. Second operand has 4 states, 4 states have (on average 117.25) internal successors, (469), 4 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:15:23,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:15:23,927 INFO L93 Difference]: Finished difference Result 376980 states and 397278 transitions. [2024-11-27 20:15:23,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:15:23,928 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 117.25) internal successors, (469), 4 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 628 [2024-11-27 20:15:23,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:15:24,202 INFO L225 Difference]: With dead ends: 376980 [2024-11-27 20:15:24,202 INFO L226 Difference]: Without dead ends: 233382 [2024-11-27 20:15:24,265 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:15:24,265 INFO L435 NwaCegarLoop]: 598 mSDtfsCounter, 1508 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 3980 mSolverCounterSat, 1205 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1508 SdHoareTripleChecker+Valid, 794 SdHoareTripleChecker+Invalid, 5185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1205 IncrementalHoareTripleChecker+Valid, 3980 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2024-11-27 20:15:24,265 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1508 Valid, 794 Invalid, 5185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1205 Valid, 3980 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2024-11-27 20:15:24,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233382 states. [2024-11-27 20:15:27,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233382 to 208175. [2024-11-27 20:15:27,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208175 states, 208174 states have (on average 1.0480943825838) internal successors, (218186), 208174 states have internal predecessors, (218186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:15:27,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208175 states to 208175 states and 218186 transitions. [2024-11-27 20:15:27,437 INFO L78 Accepts]: Start accepts. Automaton has 208175 states and 218186 transitions. Word has length 628 [2024-11-27 20:15:27,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:15:27,438 INFO L471 AbstractCegarLoop]: Abstraction has 208175 states and 218186 transitions. [2024-11-27 20:15:27,438 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 117.25) internal successors, (469), 4 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:15:27,438 INFO L276 IsEmpty]: Start isEmpty. Operand 208175 states and 218186 transitions. [2024-11-27 20:15:27,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 810 [2024-11-27 20:15:27,480 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:15:27,481 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:15:27,481 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-27 20:15:27,481 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:15:27,482 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:15:27,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1760410829, now seen corresponding path program 1 times [2024-11-27 20:15:27,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:15:27,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592371170] [2024-11-27 20:15:27,483 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:15:27,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:15:27,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat