./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label02.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462b72e0-930b-4c7c-bd83-9b6a90bb9941/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462b72e0-930b-4c7c-bd83-9b6a90bb9941/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462b72e0-930b-4c7c-bd83-9b6a90bb9941/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462b72e0-930b-4c7c-bd83-9b6a90bb9941/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label02.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462b72e0-930b-4c7c-bd83-9b6a90bb9941/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462b72e0-930b-4c7c-bd83-9b6a90bb9941/bin/uautomizer-verify-jihMAELWvX --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 1453ce65a083ed4648e89d203499c9b326168da5d5976c2f3d65b9d62166ef3b --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 18:35:29,423 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 18:35:29,528 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462b72e0-930b-4c7c-bd83-9b6a90bb9941/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 18:35:29,535 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 18:35:29,537 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 18:35:29,580 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 18:35:29,582 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 18:35:29,583 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 18:35:29,584 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 18:35:29,586 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 18:35:29,587 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 18:35:29,587 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 18:35:29,588 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 18:35:29,588 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 18:35:29,589 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 18:35:29,589 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 18:35:29,590 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 18:35:29,590 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 18:35:29,591 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 18:35:29,591 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 18:35:29,591 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 18:35:29,599 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 18:35:29,599 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 18:35:29,600 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 18:35:29,600 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 18:35:29,600 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 18:35:29,601 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 18:35:29,601 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 18:35:29,601 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 18:35:29,602 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 18:35:29,602 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 18:35:29,602 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 18:35:29,603 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 18:35:29,603 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 18:35:29,603 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 18:35:29,603 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 18:35:29,604 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 18:35:29,604 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 18:35:29,604 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 18:35:29,605 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 18:35:29,605 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 18:35:29,607 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 18:35:29,607 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462b72e0-930b-4c7c-bd83-9b6a90bb9941/bin/uautomizer-verify-jihMAELWvX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462b72e0-930b-4c7c-bd83-9b6a90bb9941/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1453ce65a083ed4648e89d203499c9b326168da5d5976c2f3d65b9d62166ef3b [2024-11-08 18:35:29,969 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 18:35:30,005 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 18:35:30,008 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 18:35:30,010 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 18:35:30,010 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 18:35:30,012 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462b72e0-930b-4c7c-bd83-9b6a90bb9941/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label02.c Unable to find full path for "g++" [2024-11-08 18:35:32,129 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 18:35:32,675 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 18:35:32,677 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462b72e0-930b-4c7c-bd83-9b6a90bb9941/sv-benchmarks/c/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label02.c [2024-11-08 18:35:32,752 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462b72e0-930b-4c7c-bd83-9b6a90bb9941/bin/uautomizer-verify-jihMAELWvX/data/38ef0f7be/2e931c641f094d47b3244ab49d13b202/FLAG9b7553d6d [2024-11-08 18:35:33,211 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462b72e0-930b-4c7c-bd83-9b6a90bb9941/bin/uautomizer-verify-jihMAELWvX/data/38ef0f7be/2e931c641f094d47b3244ab49d13b202 [2024-11-08 18:35:33,214 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 18:35:33,215 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 18:35:33,217 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 18:35:33,217 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 18:35:33,225 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 18:35:33,226 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 06:35:33" (1/1) ... [2024-11-08 18:35:33,227 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f1b44f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:35:33, skipping insertion in model container [2024-11-08 18:35:33,227 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 06:35:33" (1/1) ... [2024-11-08 18:35:33,379 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 18:35:33,801 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_462b72e0-930b-4c7c-bd83-9b6a90bb9941/sv-benchmarks/c/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label02.c[15482,15495] [2024-11-08 18:35:33,901 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_462b72e0-930b-4c7c-bd83-9b6a90bb9941/sv-benchmarks/c/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label02.c[22772,22785] [2024-11-08 18:35:35,043 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 18:35:35,060 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 18:35:35,110 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_462b72e0-930b-4c7c-bd83-9b6a90bb9941/sv-benchmarks/c/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label02.c[15482,15495] [2024-11-08 18:35:35,126 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_462b72e0-930b-4c7c-bd83-9b6a90bb9941/sv-benchmarks/c/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label02.c[22772,22785] [2024-11-08 18:35:35,840 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 18:35:35,884 INFO L204 MainTranslator]: Completed translation [2024-11-08 18:35:35,885 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:35:35 WrapperNode [2024-11-08 18:35:35,885 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 18:35:35,886 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 18:35:35,887 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 18:35:35,887 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 18:35:35,897 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:35:35" (1/1) ... [2024-11-08 18:35:35,964 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:35:35" (1/1) ... [2024-11-08 18:35:36,369 INFO L138 Inliner]: procedures = 37, calls = 23, calls flagged for inlining = 18, calls inlined = 18, statements flattened = 5157 [2024-11-08 18:35:36,370 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 18:35:36,370 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 18:35:36,370 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 18:35:36,371 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 18:35:36,384 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:35:35" (1/1) ... [2024-11-08 18:35:36,384 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:35:35" (1/1) ... [2024-11-08 18:35:36,444 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:35:35" (1/1) ... [2024-11-08 18:35:36,685 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]. [2024-11-08 18:35:36,685 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:35:35" (1/1) ... [2024-11-08 18:35:36,686 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:35:35" (1/1) ... [2024-11-08 18:35:36,933 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:35:35" (1/1) ... [2024-11-08 18:35:36,987 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:35:35" (1/1) ... [2024-11-08 18:35:37,025 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:35:35" (1/1) ... [2024-11-08 18:35:37,048 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:35:35" (1/1) ... [2024-11-08 18:35:37,195 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 18:35:37,201 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 18:35:37,202 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 18:35:37,202 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 18:35:37,204 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:35:35" (1/1) ... [2024-11-08 18:35:37,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 18:35:37,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462b72e0-930b-4c7c-bd83-9b6a90bb9941/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:35:37,275 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462b72e0-930b-4c7c-bd83-9b6a90bb9941/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 18:35:37,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462b72e0-930b-4c7c-bd83-9b6a90bb9941/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 18:35:37,330 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 18:35:37,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 18:35:37,331 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 18:35:37,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 18:35:37,472 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 18:35:37,475 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 18:35:43,788 INFO L? ?]: Removed 750 outVars from TransFormulas that were not future-live. [2024-11-08 18:35:43,789 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 18:35:43,853 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 18:35:43,853 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-08 18:35:43,853 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:35:43 BoogieIcfgContainer [2024-11-08 18:35:43,853 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 18:35:43,859 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 18:35:43,860 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 18:35:43,864 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 18:35:43,864 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 06:35:33" (1/3) ... [2024-11-08 18:35:43,865 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48c70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 06:35:43, skipping insertion in model container [2024-11-08 18:35:43,865 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:35:35" (2/3) ... [2024-11-08 18:35:43,866 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48c70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 06:35:43, skipping insertion in model container [2024-11-08 18:35:43,866 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:35:43" (3/3) ... [2024-11-08 18:35:43,868 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label02.c [2024-11-08 18:35:43,891 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 18:35:43,892 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-08 18:35:44,030 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 18:35:44,042 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;@62b71606, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 18:35:44,042 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-08 18:35:44,055 INFO L276 IsEmpty]: Start isEmpty. Operand has 915 states, 912 states have (on average 1.9035087719298245) internal successors, (1736), 914 states have internal predecessors, (1736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:35:44,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-08 18:35:44,067 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:35:44,068 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:35:44,068 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:35:44,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:35:44,076 INFO L85 PathProgramCache]: Analyzing trace with hash -811412779, now seen corresponding path program 1 times [2024-11-08 18:35:44,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:35:44,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306899774] [2024-11-08 18:35:44,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:35:44,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:35:44,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:35:44,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:35:44,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:35:44,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306899774] [2024-11-08 18:35:44,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306899774] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:35:44,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:35:44,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 18:35:44,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455613621] [2024-11-08 18:35:44,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:35:44,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-08 18:35:44,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:35:44,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-08 18:35:44,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 18:35:44,537 INFO L87 Difference]: Start difference. First operand has 915 states, 912 states have (on average 1.9035087719298245) internal successors, (1736), 914 states have internal predecessors, (1736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:35:44,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:35:44,672 INFO L93 Difference]: Finished difference Result 1784 states and 3384 transitions. [2024-11-08 18:35:44,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-08 18:35:44,678 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2024-11-08 18:35:44,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:35:44,704 INFO L225 Difference]: With dead ends: 1784 [2024-11-08 18:35:44,704 INFO L226 Difference]: Without dead ends: 849 [2024-11-08 18:35:44,715 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 18:35:44,723 INFO L432 NwaCegarLoop]: 1671 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1671 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:35:44,725 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1671 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:35:44,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2024-11-08 18:35:44,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 849. [2024-11-08 18:35:44,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 849 states, 847 states have (on average 1.8925619834710743) internal successors, (1603), 848 states have internal predecessors, (1603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:35:44,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 1603 transitions. [2024-11-08 18:35:44,834 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 1603 transitions. Word has length 27 [2024-11-08 18:35:44,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:35:44,835 INFO L471 AbstractCegarLoop]: Abstraction has 849 states and 1603 transitions. [2024-11-08 18:35:44,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:35:44,836 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 1603 transitions. [2024-11-08 18:35:44,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-08 18:35:44,837 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:35:44,837 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:35:44,837 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 18:35:44,838 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:35:44,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:35:44,839 INFO L85 PathProgramCache]: Analyzing trace with hash -388710953, now seen corresponding path program 1 times [2024-11-08 18:35:44,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:35:44,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134105554] [2024-11-08 18:35:44,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:35:44,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:35:44,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:35:45,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:35:45,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:35:45,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134105554] [2024-11-08 18:35:45,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134105554] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:35:45,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:35:45,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 18:35:45,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554868476] [2024-11-08 18:35:45,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:35:45,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 18:35:45,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:35:45,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 18:35:45,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 18:35:45,320 INFO L87 Difference]: Start difference. First operand 849 states and 1603 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:35:45,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:35:45,499 INFO L93 Difference]: Finished difference Result 902 states and 1685 transitions. [2024-11-08 18:35:45,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 18:35:45,500 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2024-11-08 18:35:45,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:35:45,505 INFO L225 Difference]: With dead ends: 902 [2024-11-08 18:35:45,506 INFO L226 Difference]: Without dead ends: 849 [2024-11-08 18:35:45,507 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 18:35:45,509 INFO L432 NwaCegarLoop]: 1601 mSDtfsCounter, 0 mSDsluCounter, 4758 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6359 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:35:45,510 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6359 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:35:45,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2024-11-08 18:35:45,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 849. [2024-11-08 18:35:45,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 849 states, 847 states have (on average 1.845336481700118) internal successors, (1563), 848 states have internal predecessors, (1563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:35:45,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 1563 transitions. [2024-11-08 18:35:45,554 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 1563 transitions. Word has length 27 [2024-11-08 18:35:45,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:35:45,554 INFO L471 AbstractCegarLoop]: Abstraction has 849 states and 1563 transitions. [2024-11-08 18:35:45,555 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:35:45,555 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 1563 transitions. [2024-11-08 18:35:45,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-08 18:35:45,559 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:35:45,560 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:35:45,560 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 18:35:45,560 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:35:45,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:35:45,561 INFO L85 PathProgramCache]: Analyzing trace with hash 573598746, now seen corresponding path program 1 times [2024-11-08 18:35:45,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:35:45,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346617932] [2024-11-08 18:35:45,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:35:45,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:35:45,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:35:45,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:35:45,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:35:45,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346617932] [2024-11-08 18:35:45,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346617932] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:35:45,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:35:45,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 18:35:45,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900805130] [2024-11-08 18:35:45,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:35:45,812 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:35:45,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:35:45,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:35:45,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:35:45,815 INFO L87 Difference]: Start difference. First operand 849 states and 1563 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:35:51,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:35:51,327 INFO L93 Difference]: Finished difference Result 2353 states and 4436 transitions. [2024-11-08 18:35:51,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:35:51,328 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2024-11-08 18:35:51,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:35:51,338 INFO L225 Difference]: With dead ends: 2353 [2024-11-08 18:35:51,339 INFO L226 Difference]: Without dead ends: 1600 [2024-11-08 18:35:51,342 INFO L431 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 [2024-11-08 18:35:51,346 INFO L432 NwaCegarLoop]: 592 mSDtfsCounter, 862 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2261 mSolverCounterSat, 652 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 862 SdHoareTripleChecker+Valid, 599 SdHoareTripleChecker+Invalid, 2913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 652 IncrementalHoareTripleChecker+Valid, 2261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2024-11-08 18:35:51,350 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [862 Valid, 599 Invalid, 2913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [652 Valid, 2261 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2024-11-08 18:35:51,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1600 states. [2024-11-08 18:35:51,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1600 to 1600. [2024-11-08 18:35:51,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1600 states, 1598 states have (on average 1.590738423028786) internal successors, (2542), 1599 states have internal predecessors, (2542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:35:51,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1600 states to 1600 states and 2542 transitions. [2024-11-08 18:35:51,427 INFO L78 Accepts]: Start accepts. Automaton has 1600 states and 2542 transitions. Word has length 63 [2024-11-08 18:35:51,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:35:51,433 INFO L471 AbstractCegarLoop]: Abstraction has 1600 states and 2542 transitions. [2024-11-08 18:35:51,434 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:35:51,434 INFO L276 IsEmpty]: Start isEmpty. Operand 1600 states and 2542 transitions. [2024-11-08 18:35:51,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-08 18:35:51,440 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:35:51,441 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:35:51,441 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 18:35:51,441 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:35:51,442 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:35:51,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1388667403, now seen corresponding path program 1 times [2024-11-08 18:35:51,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:35:51,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96744455] [2024-11-08 18:35:51,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:35:51,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:35:51,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:35:51,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:35:51,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:35:51,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96744455] [2024-11-08 18:35:51,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96744455] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:35:51,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:35:51,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-08 18:35:51,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351345792] [2024-11-08 18:35:51,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:35:51,809 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 18:35:51,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:35:51,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 18:35:51,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-08 18:35:51,811 INFO L87 Difference]: Start difference. First operand 1600 states and 2542 transitions. Second operand has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:35:52,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:35:52,286 INFO L93 Difference]: Finished difference Result 2188 states and 3478 transitions. [2024-11-08 18:35:52,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-08 18:35:52,287 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2024-11-08 18:35:52,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:35:52,296 INFO L225 Difference]: With dead ends: 2188 [2024-11-08 18:35:52,296 INFO L226 Difference]: Without dead ends: 2139 [2024-11-08 18:35:52,298 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2024-11-08 18:35:52,299 INFO L432 NwaCegarLoop]: 1559 mSDtfsCounter, 9710 mSDsluCounter, 2165 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9710 SdHoareTripleChecker+Valid, 3724 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 18:35:52,299 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9710 Valid, 3724 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 18:35:52,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2139 states. [2024-11-08 18:35:52,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2139 to 1647. [2024-11-08 18:35:52,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1647 states, 1645 states have (on average 1.5908814589665654) internal successors, (2617), 1646 states have internal predecessors, (2617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:35:52,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1647 states to 1647 states and 2617 transitions. [2024-11-08 18:35:52,352 INFO L78 Accepts]: Start accepts. Automaton has 1647 states and 2617 transitions. Word has length 66 [2024-11-08 18:35:52,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:35:52,353 INFO L471 AbstractCegarLoop]: Abstraction has 1647 states and 2617 transitions. [2024-11-08 18:35:52,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:35:52,354 INFO L276 IsEmpty]: Start isEmpty. Operand 1647 states and 2617 transitions. [2024-11-08 18:35:52,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-08 18:35:52,356 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:35:52,356 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:35:52,356 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 18:35:52,356 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:35:52,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:35:52,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1653818299, now seen corresponding path program 1 times [2024-11-08 18:35:52,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:35:52,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321227812] [2024-11-08 18:35:52,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:35:52,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:35:52,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:35:52,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:35:52,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:35:52,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321227812] [2024-11-08 18:35:52,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321227812] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:35:52,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:35:52,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:35:52,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566784401] [2024-11-08 18:35:52,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:35:52,514 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:35:52,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:35:52,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:35:52,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:35:52,515 INFO L87 Difference]: Start difference. First operand 1647 states and 2617 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:35:52,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:35:52,557 INFO L93 Difference]: Finished difference Result 1828 states and 2904 transitions. [2024-11-08 18:35:52,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:35:52,558 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2024-11-08 18:35:52,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:35:52,565 INFO L225 Difference]: With dead ends: 1828 [2024-11-08 18:35:52,566 INFO L226 Difference]: Without dead ends: 1732 [2024-11-08 18:35:52,568 INFO L431 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 [2024-11-08 18:35:52,569 INFO L432 NwaCegarLoop]: 1561 mSDtfsCounter, 1490 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1490 SdHoareTripleChecker+Valid, 1634 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:35:52,569 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1490 Valid, 1634 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:35:52,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1732 states. [2024-11-08 18:35:52,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1732 to 1730. [2024-11-08 18:35:52,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1730 states, 1728 states have (on average 1.5896990740740742) internal successors, (2747), 1729 states have internal predecessors, (2747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:35:52,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1730 states to 1730 states and 2747 transitions. [2024-11-08 18:35:52,610 INFO L78 Accepts]: Start accepts. Automaton has 1730 states and 2747 transitions. Word has length 68 [2024-11-08 18:35:52,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:35:52,610 INFO L471 AbstractCegarLoop]: Abstraction has 1730 states and 2747 transitions. [2024-11-08 18:35:52,611 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:35:52,611 INFO L276 IsEmpty]: Start isEmpty. Operand 1730 states and 2747 transitions. [2024-11-08 18:35:52,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-08 18:35:52,613 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:35:52,613 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:35:52,613 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 18:35:52,615 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:35:52,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:35:52,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1720311811, now seen corresponding path program 1 times [2024-11-08 18:35:52,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:35:52,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047386380] [2024-11-08 18:35:52,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:35:52,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:35:52,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:35:53,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:35:53,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:35:53,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047386380] [2024-11-08 18:35:53,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047386380] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:35:53,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:35:53,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-08 18:35:53,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263716884] [2024-11-08 18:35:53,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:35:53,113 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 18:35:53,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:35:53,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 18:35:53,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-08 18:35:53,113 INFO L87 Difference]: Start difference. First operand 1730 states and 2747 transitions. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:35:53,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:35:53,454 INFO L93 Difference]: Finished difference Result 1911 states and 3031 transitions. [2024-11-08 18:35:53,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 18:35:53,457 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2024-11-08 18:35:53,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:35:53,466 INFO L225 Difference]: With dead ends: 1911 [2024-11-08 18:35:53,466 INFO L226 Difference]: Without dead ends: 1732 [2024-11-08 18:35:53,467 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2024-11-08 18:35:53,469 INFO L432 NwaCegarLoop]: 1555 mSDtfsCounter, 8992 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8992 SdHoareTripleChecker+Valid, 1928 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:35:53,470 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8992 Valid, 1928 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:35:53,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1732 states. [2024-11-08 18:35:53,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1732 to 1730. [2024-11-08 18:35:53,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1730 states, 1728 states have (on average 1.5885416666666667) internal successors, (2745), 1729 states have internal predecessors, (2745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:35:53,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1730 states to 1730 states and 2745 transitions. [2024-11-08 18:35:53,569 INFO L78 Accepts]: Start accepts. Automaton has 1730 states and 2745 transitions. Word has length 68 [2024-11-08 18:35:53,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:35:53,569 INFO L471 AbstractCegarLoop]: Abstraction has 1730 states and 2745 transitions. [2024-11-08 18:35:53,569 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:35:53,569 INFO L276 IsEmpty]: Start isEmpty. Operand 1730 states and 2745 transitions. [2024-11-08 18:35:53,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-08 18:35:53,572 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:35:53,572 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:35:53,572 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 18:35:53,572 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:35:53,573 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:35:53,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1375335590, now seen corresponding path program 1 times [2024-11-08 18:35:53,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:35:53,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452549257] [2024-11-08 18:35:53,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:35:53,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:35:53,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:35:53,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:35:53,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:35:53,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452549257] [2024-11-08 18:35:53,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452549257] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:35:53,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:35:53,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 18:35:53,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291151725] [2024-11-08 18:35:53,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:35:53,851 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 18:35:53,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:35:53,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 18:35:53,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 18:35:53,853 INFO L87 Difference]: Start difference. First operand 1730 states and 2745 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:35:53,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:35:53,902 INFO L93 Difference]: Finished difference Result 1738 states and 2754 transitions. [2024-11-08 18:35:53,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 18:35:53,902 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2024-11-08 18:35:53,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:35:53,910 INFO L225 Difference]: With dead ends: 1738 [2024-11-08 18:35:53,911 INFO L226 Difference]: Without dead ends: 1736 [2024-11-08 18:35:53,912 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 18:35:53,915 INFO L432 NwaCegarLoop]: 1560 mSDtfsCounter, 0 mSDsluCounter, 4671 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6231 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:35:53,915 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6231 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:35:53,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1736 states. [2024-11-08 18:35:53,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1736 to 1736. [2024-11-08 18:35:53,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1736 states, 1734 states have (on average 1.585928489042676) internal successors, (2750), 1735 states have internal predecessors, (2750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:35:53,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1736 states to 1736 states and 2750 transitions. [2024-11-08 18:35:53,959 INFO L78 Accepts]: Start accepts. Automaton has 1736 states and 2750 transitions. Word has length 69 [2024-11-08 18:35:53,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:35:53,959 INFO L471 AbstractCegarLoop]: Abstraction has 1736 states and 2750 transitions. [2024-11-08 18:35:53,960 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:35:53,960 INFO L276 IsEmpty]: Start isEmpty. Operand 1736 states and 2750 transitions. [2024-11-08 18:35:53,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-08 18:35:53,961 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:35:53,961 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:35:53,961 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-08 18:35:53,962 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:35:53,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:35:53,962 INFO L85 PathProgramCache]: Analyzing trace with hash -103737533, now seen corresponding path program 1 times [2024-11-08 18:35:53,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:35:53,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186767306] [2024-11-08 18:35:53,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:35:53,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:35:53,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:35:54,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:35:54,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:35:54,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186767306] [2024-11-08 18:35:54,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186767306] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:35:54,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:35:54,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:35:54,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955247513] [2024-11-08 18:35:54,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:35:54,067 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:35:54,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:35:54,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:35:54,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:35:54,069 INFO L87 Difference]: Start difference. First operand 1736 states and 2750 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:35:54,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:35:54,105 INFO L93 Difference]: Finished difference Result 1935 states and 3056 transitions. [2024-11-08 18:35:54,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:35:54,106 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2024-11-08 18:35:54,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:35:54,114 INFO L225 Difference]: With dead ends: 1935 [2024-11-08 18:35:54,114 INFO L226 Difference]: Without dead ends: 1833 [2024-11-08 18:35:54,115 INFO L431 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 [2024-11-08 18:35:54,116 INFO L432 NwaCegarLoop]: 1625 mSDtfsCounter, 1506 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1506 SdHoareTripleChecker+Valid, 1704 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:35:54,117 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1506 Valid, 1704 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:35:54,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1833 states. [2024-11-08 18:35:54,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1833 to 1831. [2024-11-08 18:35:54,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1831 states, 1829 states have (on average 1.5822854018589394) internal successors, (2894), 1830 states have internal predecessors, (2894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:35:54,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1831 states to 1831 states and 2894 transitions. [2024-11-08 18:35:54,166 INFO L78 Accepts]: Start accepts. Automaton has 1831 states and 2894 transitions. Word has length 70 [2024-11-08 18:35:54,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:35:54,167 INFO L471 AbstractCegarLoop]: Abstraction has 1831 states and 2894 transitions. [2024-11-08 18:35:54,167 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:35:54,167 INFO L276 IsEmpty]: Start isEmpty. Operand 1831 states and 2894 transitions. [2024-11-08 18:35:54,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-08 18:35:54,169 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:35:54,169 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:35:54,169 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-08 18:35:54,170 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:35:54,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:35:54,170 INFO L85 PathProgramCache]: Analyzing trace with hash 59177027, now seen corresponding path program 1 times [2024-11-08 18:35:54,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:35:54,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076457606] [2024-11-08 18:35:54,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:35:54,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:35:54,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:35:54,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:35:54,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:35:54,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076457606] [2024-11-08 18:35:54,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076457606] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:35:54,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:35:54,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:35:54,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190024944] [2024-11-08 18:35:54,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:35:54,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:35:54,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:35:54,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:35:54,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:35:54,250 INFO L87 Difference]: Start difference. First operand 1831 states and 2894 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:35:54,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:35:54,288 INFO L93 Difference]: Finished difference Result 2361 states and 3706 transitions. [2024-11-08 18:35:54,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:35:54,289 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2024-11-08 18:35:54,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:35:54,296 INFO L225 Difference]: With dead ends: 2361 [2024-11-08 18:35:54,296 INFO L226 Difference]: Without dead ends: 2084 [2024-11-08 18:35:54,298 INFO L431 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 [2024-11-08 18:35:54,299 INFO L432 NwaCegarLoop]: 1627 mSDtfsCounter, 1504 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1504 SdHoareTripleChecker+Valid, 1710 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:35:54,301 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1504 Valid, 1710 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:35:54,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2084 states. [2024-11-08 18:35:54,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2084 to 2082. [2024-11-08 18:35:54,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2082 states, 2080 states have (on average 1.573076923076923) internal successors, (3272), 2081 states have internal predecessors, (3272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:35:54,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2082 states to 2082 states and 3272 transitions. [2024-11-08 18:35:54,354 INFO L78 Accepts]: Start accepts. Automaton has 2082 states and 3272 transitions. Word has length 70 [2024-11-08 18:35:54,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:35:54,355 INFO L471 AbstractCegarLoop]: Abstraction has 2082 states and 3272 transitions. [2024-11-08 18:35:54,355 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:35:54,355 INFO L276 IsEmpty]: Start isEmpty. Operand 2082 states and 3272 transitions. [2024-11-08 18:35:54,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-08 18:35:54,356 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:35:54,356 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:35:54,356 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-08 18:35:54,356 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:35:54,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:35:54,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1561295427, now seen corresponding path program 1 times [2024-11-08 18:35:54,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:35:54,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339676352] [2024-11-08 18:35:54,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:35:54,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:35:54,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:35:54,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:35:54,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:35:54,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339676352] [2024-11-08 18:35:54,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339676352] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:35:54,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:35:54,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:35:54,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776633388] [2024-11-08 18:35:54,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:35:54,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:35:54,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:35:54,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:35:54,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:35:54,446 INFO L87 Difference]: Start difference. First operand 2082 states and 3272 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:35:54,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:35:54,493 INFO L93 Difference]: Finished difference Result 3090 states and 4798 transitions. [2024-11-08 18:35:54,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:35:54,493 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2024-11-08 18:35:54,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:35:54,502 INFO L225 Difference]: With dead ends: 3090 [2024-11-08 18:35:54,502 INFO L226 Difference]: Without dead ends: 2562 [2024-11-08 18:35:54,504 INFO L431 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 [2024-11-08 18:35:54,504 INFO L432 NwaCegarLoop]: 1615 mSDtfsCounter, 1500 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1500 SdHoareTripleChecker+Valid, 1706 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:35:54,505 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1500 Valid, 1706 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:35:54,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2562 states. [2024-11-08 18:35:54,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2562 to 2560. [2024-11-08 18:35:54,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2560 states, 2558 states have (on average 1.555903049257232) internal successors, (3980), 2559 states have internal predecessors, (3980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:35:54,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2560 states to 2560 states and 3980 transitions. [2024-11-08 18:35:54,573 INFO L78 Accepts]: Start accepts. Automaton has 2560 states and 3980 transitions. Word has length 70 [2024-11-08 18:35:54,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:35:54,574 INFO L471 AbstractCegarLoop]: Abstraction has 2560 states and 3980 transitions. [2024-11-08 18:35:54,574 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:35:54,574 INFO L276 IsEmpty]: Start isEmpty. Operand 2560 states and 3980 transitions. [2024-11-08 18:35:54,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-08 18:35:54,575 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:35:54,575 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:35:54,575 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-08 18:35:54,576 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:35:54,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:35:54,576 INFO L85 PathProgramCache]: Analyzing trace with hash -654173373, now seen corresponding path program 1 times [2024-11-08 18:35:54,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:35:54,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508379807] [2024-11-08 18:35:54,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:35:54,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:35:54,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:35:54,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:35:54,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:35:54,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508379807] [2024-11-08 18:35:54,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508379807] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:35:54,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:35:54,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:35:54,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582638776] [2024-11-08 18:35:54,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:35:54,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:35:54,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:35:54,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:35:54,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:35:54,654 INFO L87 Difference]: Start difference. First operand 2560 states and 3980 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:35:54,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:35:54,714 INFO L93 Difference]: Finished difference Result 4476 states and 6838 transitions. [2024-11-08 18:35:54,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:35:54,715 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2024-11-08 18:35:54,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:35:54,727 INFO L225 Difference]: With dead ends: 4476 [2024-11-08 18:35:54,727 INFO L226 Difference]: Without dead ends: 3470 [2024-11-08 18:35:54,729 INFO L431 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 [2024-11-08 18:35:54,730 INFO L432 NwaCegarLoop]: 1613 mSDtfsCounter, 1498 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1498 SdHoareTripleChecker+Valid, 1708 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:35:54,730 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1498 Valid, 1708 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:35:54,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3470 states. [2024-11-08 18:35:54,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3470 to 3468. [2024-11-08 18:35:54,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3468 states, 3466 states have (on average 1.529140219272937) internal successors, (5300), 3467 states have internal predecessors, (5300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:35:54,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3468 states to 3468 states and 5300 transitions. [2024-11-08 18:35:54,832 INFO L78 Accepts]: Start accepts. Automaton has 3468 states and 5300 transitions. Word has length 70 [2024-11-08 18:35:54,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:35:54,832 INFO L471 AbstractCegarLoop]: Abstraction has 3468 states and 5300 transitions. [2024-11-08 18:35:54,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:35:54,832 INFO L276 IsEmpty]: Start isEmpty. Operand 3468 states and 5300 transitions. [2024-11-08 18:35:54,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-08 18:35:54,833 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:35:54,833 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:35:54,834 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-08 18:35:54,834 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:35:54,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:35:54,834 INFO L85 PathProgramCache]: Analyzing trace with hash 1126759491, now seen corresponding path program 1 times [2024-11-08 18:35:54,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:35:54,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560581495] [2024-11-08 18:35:54,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:35:54,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:35:54,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:35:54,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:35:54,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:35:54,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560581495] [2024-11-08 18:35:54,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560581495] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:35:54,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:35:54,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:35:54,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795847600] [2024-11-08 18:35:54,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:35:54,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:35:54,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:35:54,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:35:54,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:35:54,911 INFO L87 Difference]: Start difference. First operand 3468 states and 5300 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:35:55,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:35:55,013 INFO L93 Difference]: Finished difference Result 7104 states and 10630 transitions. [2024-11-08 18:35:55,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:35:55,014 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2024-11-08 18:35:55,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:35:55,047 INFO L225 Difference]: With dead ends: 7104 [2024-11-08 18:35:55,047 INFO L226 Difference]: Without dead ends: 5190 [2024-11-08 18:35:55,055 INFO L431 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 [2024-11-08 18:35:55,055 INFO L432 NwaCegarLoop]: 1611 mSDtfsCounter, 1496 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1496 SdHoareTripleChecker+Valid, 1710 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:35:55,056 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1496 Valid, 1710 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:35:55,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5190 states. [2024-11-08 18:35:55,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5190 to 5188. [2024-11-08 18:35:55,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5188 states, 5186 states have (on average 1.4940223679136135) internal successors, (7748), 5187 states have internal predecessors, (7748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:35:55,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5188 states to 5188 states and 7748 transitions. [2024-11-08 18:35:55,332 INFO L78 Accepts]: Start accepts. Automaton has 5188 states and 7748 transitions. Word has length 70 [2024-11-08 18:35:55,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:35:55,332 INFO L471 AbstractCegarLoop]: Abstraction has 5188 states and 7748 transitions. [2024-11-08 18:35:55,333 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:35:55,333 INFO L276 IsEmpty]: Start isEmpty. Operand 5188 states and 7748 transitions. [2024-11-08 18:35:55,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-08 18:35:55,334 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:35:55,334 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:35:55,334 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-08 18:35:55,335 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:35:55,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:35:55,335 INFO L85 PathProgramCache]: Analyzing trace with hash 323033411, now seen corresponding path program 1 times [2024-11-08 18:35:55,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:35:55,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45739385] [2024-11-08 18:35:55,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:35:55,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:35:55,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:35:55,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:35:55,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:35:55,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45739385] [2024-11-08 18:35:55,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45739385] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:35:55,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:35:55,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:35:55,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650409128] [2024-11-08 18:35:55,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:35:55,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:35:55,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:35:55,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:35:55,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:35:55,438 INFO L87 Difference]: Start difference. First operand 5188 states and 7748 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:35:55,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:35:55,641 INFO L93 Difference]: Finished difference Result 12072 states and 17638 transitions. [2024-11-08 18:35:55,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:35:55,642 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2024-11-08 18:35:55,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:35:55,669 INFO L225 Difference]: With dead ends: 12072 [2024-11-08 18:35:55,670 INFO L226 Difference]: Without dead ends: 8438 [2024-11-08 18:35:55,676 INFO L431 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 [2024-11-08 18:35:55,677 INFO L432 NwaCegarLoop]: 1625 mSDtfsCounter, 1502 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1502 SdHoareTripleChecker+Valid, 1712 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:35:55,678 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1502 Valid, 1712 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:35:55,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8438 states. [2024-11-08 18:35:55,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8438 to 8436. [2024-11-08 18:35:55,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8436 states, 8434 states have (on average 1.4536400284562485) internal successors, (12260), 8435 states have internal predecessors, (12260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:35:55,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8436 states to 8436 states and 12260 transitions. [2024-11-08 18:35:55,973 INFO L78 Accepts]: Start accepts. Automaton has 8436 states and 12260 transitions. Word has length 70 [2024-11-08 18:35:55,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:35:55,974 INFO L471 AbstractCegarLoop]: Abstraction has 8436 states and 12260 transitions. [2024-11-08 18:35:55,975 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:35:55,975 INFO L276 IsEmpty]: Start isEmpty. Operand 8436 states and 12260 transitions. [2024-11-08 18:35:55,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-08 18:35:55,979 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:35:55,979 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:35:55,979 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-08 18:35:55,980 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:35:55,980 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:35:55,980 INFO L85 PathProgramCache]: Analyzing trace with hash -2097607873, now seen corresponding path program 1 times [2024-11-08 18:35:55,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:35:55,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372963678] [2024-11-08 18:35:55,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:35:55,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:35:56,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:35:56,308 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 18:35:56,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:35:56,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372963678] [2024-11-08 18:35:56,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372963678] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:35:56,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:35:56,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-08 18:35:56,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489365921] [2024-11-08 18:35:56,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:35:56,313 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 18:35:56,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:35:56,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 18:35:56,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-08 18:35:56,317 INFO L87 Difference]: Start difference. First operand 8436 states and 12260 transitions. Second operand has 8 states, 8 states have (on average 11.25) internal successors, (90), 8 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:35:57,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:35:57,647 INFO L93 Difference]: Finished difference Result 49154 states and 70155 transitions. [2024-11-08 18:35:57,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 18:35:57,648 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.25) internal successors, (90), 8 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2024-11-08 18:35:57,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:35:57,751 INFO L225 Difference]: With dead ends: 49154 [2024-11-08 18:35:57,751 INFO L226 Difference]: Without dead ends: 44288 [2024-11-08 18:35:57,769 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-11-08 18:35:57,769 INFO L432 NwaCegarLoop]: 1638 mSDtfsCounter, 8088 mSDsluCounter, 2403 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8088 SdHoareTripleChecker+Valid, 4041 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 18:35:57,770 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8088 Valid, 4041 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 18:35:57,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44288 states. [2024-11-08 18:35:58,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44288 to 14324. [2024-11-08 18:35:58,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14324 states, 14322 states have (on average 1.434715821812596) internal successors, (20548), 14323 states have internal predecessors, (20548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:35:58,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14324 states to 14324 states and 20548 transitions. [2024-11-08 18:35:58,721 INFO L78 Accepts]: Start accepts. Automaton has 14324 states and 20548 transitions. Word has length 92 [2024-11-08 18:35:58,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:35:58,722 INFO L471 AbstractCegarLoop]: Abstraction has 14324 states and 20548 transitions. [2024-11-08 18:35:58,722 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.25) internal successors, (90), 8 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:35:58,722 INFO L276 IsEmpty]: Start isEmpty. Operand 14324 states and 20548 transitions. [2024-11-08 18:35:58,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-08 18:35:58,729 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:35:58,730 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:35:58,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-08 18:35:58,730 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:35:58,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:35:58,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1934693313, now seen corresponding path program 1 times [2024-11-08 18:35:58,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:35:58,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707184995] [2024-11-08 18:35:58,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:35:58,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:35:58,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:35:59,106 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-08 18:35:59,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:35:59,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707184995] [2024-11-08 18:35:59,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707184995] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:35:59,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:35:59,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-08 18:35:59,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004606330] [2024-11-08 18:35:59,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:35:59,108 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 18:35:59,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:35:59,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 18:35:59,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-08 18:35:59,109 INFO L87 Difference]: Start difference. First operand 14324 states and 20548 transitions. Second operand has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:36:00,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:36:00,637 INFO L93 Difference]: Finished difference Result 56034 states and 79883 transitions. [2024-11-08 18:36:00,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 18:36:00,637 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 0 states have call successors, (0), 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 92 [2024-11-08 18:36:00,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:36:00,755 INFO L225 Difference]: With dead ends: 56034 [2024-11-08 18:36:00,755 INFO L226 Difference]: Without dead ends: 49152 [2024-11-08 18:36:00,773 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-11-08 18:36:00,774 INFO L432 NwaCegarLoop]: 1637 mSDtfsCounter, 8090 mSDsluCounter, 2361 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8090 SdHoareTripleChecker+Valid, 3998 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 18:36:00,774 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8090 Valid, 3998 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 18:36:00,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49152 states. [2024-11-08 18:36:01,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49152 to 23636. [2024-11-08 18:36:01,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23636 states, 23634 states have (on average 1.4232038588474232) internal successors, (33636), 23635 states have internal predecessors, (33636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:36:02,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23636 states to 23636 states and 33636 transitions. [2024-11-08 18:36:02,035 INFO L78 Accepts]: Start accepts. Automaton has 23636 states and 33636 transitions. Word has length 92 [2024-11-08 18:36:02,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:36:02,039 INFO L471 AbstractCegarLoop]: Abstraction has 23636 states and 33636 transitions. [2024-11-08 18:36:02,039 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:36:02,039 INFO L276 IsEmpty]: Start isEmpty. Operand 23636 states and 33636 transitions. [2024-11-08 18:36:02,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-08 18:36:02,045 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:36:02,045 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:36:02,046 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-08 18:36:02,046 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:36:02,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:36:02,048 INFO L85 PathProgramCache]: Analyzing trace with hash -432574913, now seen corresponding path program 1 times [2024-11-08 18:36:02,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:36:02,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043406807] [2024-11-08 18:36:02,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:36:02,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:36:02,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:36:02,347 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-08 18:36:02,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:36:02,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043406807] [2024-11-08 18:36:02,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043406807] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:36:02,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:36:02,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-08 18:36:02,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192368380] [2024-11-08 18:36:02,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:36:02,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 18:36:02,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:36:02,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 18:36:02,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-08 18:36:02,352 INFO L87 Difference]: Start difference. First operand 23636 states and 33636 transitions. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:36:03,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:36:03,833 INFO L93 Difference]: Finished difference Result 62914 states and 89579 transitions. [2024-11-08 18:36:03,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 18:36:03,834 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 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 92 [2024-11-08 18:36:03,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:36:03,953 INFO L225 Difference]: With dead ends: 62914 [2024-11-08 18:36:03,953 INFO L226 Difference]: Without dead ends: 56032 [2024-11-08 18:36:03,972 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-11-08 18:36:03,973 INFO L432 NwaCegarLoop]: 1635 mSDtfsCounter, 8136 mSDsluCounter, 2356 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8136 SdHoareTripleChecker+Valid, 3991 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:36:03,974 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8136 Valid, 3991 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:36:04,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56032 states. [2024-11-08 18:36:05,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56032 to 30516. [2024-11-08 18:36:05,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30516 states, 30514 states have (on average 1.4200694763059578) internal successors, (43332), 30515 states have internal predecessors, (43332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:36:05,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30516 states to 30516 states and 43332 transitions. [2024-11-08 18:36:05,840 INFO L78 Accepts]: Start accepts. Automaton has 30516 states and 43332 transitions. Word has length 92 [2024-11-08 18:36:05,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:36:05,841 INFO L471 AbstractCegarLoop]: Abstraction has 30516 states and 43332 transitions. [2024-11-08 18:36:05,841 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:36:05,841 INFO L276 IsEmpty]: Start isEmpty. Operand 30516 states and 43332 transitions. [2024-11-08 18:36:05,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-08 18:36:05,846 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:36:05,847 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:36:05,847 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-08 18:36:05,847 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:36:05,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:36:05,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1646923583, now seen corresponding path program 1 times [2024-11-08 18:36:05,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:36:05,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106458238] [2024-11-08 18:36:05,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:36:05,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:36:05,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:36:06,138 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-08 18:36:06,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:36:06,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106458238] [2024-11-08 18:36:06,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106458238] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:36:06,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:36:06,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-08 18:36:06,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436812495] [2024-11-08 18:36:06,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:36:06,141 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 18:36:06,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:36:06,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 18:36:06,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-08 18:36:06,142 INFO L87 Difference]: Start difference. First operand 30516 states and 43332 transitions. Second operand has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:36:07,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:36:07,812 INFO L93 Difference]: Finished difference Result 69794 states and 99275 transitions. [2024-11-08 18:36:07,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 18:36:07,813 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2024-11-08 18:36:07,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:36:07,897 INFO L225 Difference]: With dead ends: 69794 [2024-11-08 18:36:07,897 INFO L226 Difference]: Without dead ends: 62912 [2024-11-08 18:36:07,915 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-11-08 18:36:07,916 INFO L432 NwaCegarLoop]: 1633 mSDtfsCounter, 8190 mSDsluCounter, 2342 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8190 SdHoareTripleChecker+Valid, 3975 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:36:07,916 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8190 Valid, 3975 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:36:07,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62912 states. [2024-11-08 18:36:09,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62912 to 37396. [2024-11-08 18:36:09,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37396 states, 37394 states have (on average 1.4180884633898487) internal successors, (53028), 37395 states have internal predecessors, (53028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:36:09,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37396 states to 37396 states and 53028 transitions. [2024-11-08 18:36:09,699 INFO L78 Accepts]: Start accepts. Automaton has 37396 states and 53028 transitions. Word has length 92 [2024-11-08 18:36:09,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:36:09,699 INFO L471 AbstractCegarLoop]: Abstraction has 37396 states and 53028 transitions. [2024-11-08 18:36:09,700 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:36:09,700 INFO L276 IsEmpty]: Start isEmpty. Operand 37396 states and 53028 transitions. [2024-11-08 18:36:09,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-08 18:36:09,707 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:36:09,708 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:36:09,708 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-08 18:36:09,708 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:36:09,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:36:09,709 INFO L85 PathProgramCache]: Analyzing trace with hash -867110849, now seen corresponding path program 1 times [2024-11-08 18:36:09,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:36:09,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97496301] [2024-11-08 18:36:09,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:36:09,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:36:09,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:36:10,049 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-08 18:36:10,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:36:10,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97496301] [2024-11-08 18:36:10,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97496301] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:36:10,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:36:10,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-08 18:36:10,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536914379] [2024-11-08 18:36:10,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:36:10,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 18:36:10,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:36:10,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 18:36:10,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-08 18:36:10,053 INFO L87 Difference]: Start difference. First operand 37396 states and 53028 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:36:12,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:36:12,992 INFO L93 Difference]: Finished difference Result 76674 states and 108971 transitions. [2024-11-08 18:36:12,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 18:36:12,993 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2024-11-08 18:36:12,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:36:13,089 INFO L225 Difference]: With dead ends: 76674 [2024-11-08 18:36:13,089 INFO L226 Difference]: Without dead ends: 69792 [2024-11-08 18:36:13,108 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-11-08 18:36:13,109 INFO L432 NwaCegarLoop]: 1633 mSDtfsCounter, 8102 mSDsluCounter, 2385 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8102 SdHoareTripleChecker+Valid, 4018 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 18:36:13,109 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8102 Valid, 4018 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 18:36:13,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69792 states. [2024-11-08 18:36:15,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69792 to 44276. [2024-11-08 18:36:15,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44276 states, 44274 states have (on average 1.416723133215883) internal successors, (62724), 44275 states have internal predecessors, (62724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:36:15,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44276 states to 44276 states and 62724 transitions. [2024-11-08 18:36:15,194 INFO L78 Accepts]: Start accepts. Automaton has 44276 states and 62724 transitions. Word has length 92 [2024-11-08 18:36:15,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:36:15,195 INFO L471 AbstractCegarLoop]: Abstraction has 44276 states and 62724 transitions. [2024-11-08 18:36:15,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:36:15,195 INFO L276 IsEmpty]: Start isEmpty. Operand 44276 states and 62724 transitions. [2024-11-08 18:36:15,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-08 18:36:15,204 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:36:15,204 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:36:15,205 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-08 18:36:15,205 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:36:15,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:36:15,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1670836929, now seen corresponding path program 1 times [2024-11-08 18:36:15,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:36:15,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957412670] [2024-11-08 18:36:15,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:36:15,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:36:15,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:36:15,564 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-08 18:36:15,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:36:15,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957412670] [2024-11-08 18:36:15,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957412670] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:36:15,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:36:15,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-08 18:36:15,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204243156] [2024-11-08 18:36:15,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:36:15,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 18:36:15,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:36:15,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 18:36:15,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-08 18:36:15,569 INFO L87 Difference]: Start difference. First operand 44276 states and 62724 transitions. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:36:18,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:36:18,148 INFO L93 Difference]: Finished difference Result 83554 states and 118667 transitions. [2024-11-08 18:36:18,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 18:36:18,148 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2024-11-08 18:36:18,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:36:18,269 INFO L225 Difference]: With dead ends: 83554 [2024-11-08 18:36:18,270 INFO L226 Difference]: Without dead ends: 76672 [2024-11-08 18:36:18,289 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-11-08 18:36:18,290 INFO L432 NwaCegarLoop]: 1632 mSDtfsCounter, 8037 mSDsluCounter, 2540 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8037 SdHoareTripleChecker+Valid, 4172 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 18:36:18,290 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8037 Valid, 4172 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 18:36:18,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76672 states. [2024-11-08 18:36:20,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76672 to 51156. [2024-11-08 18:36:20,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51156 states, 51154 states have (on average 1.415725065488525) internal successors, (72420), 51155 states have internal predecessors, (72420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:36:20,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51156 states to 51156 states and 72420 transitions. [2024-11-08 18:36:20,916 INFO L78 Accepts]: Start accepts. Automaton has 51156 states and 72420 transitions. Word has length 92 [2024-11-08 18:36:20,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:36:20,916 INFO L471 AbstractCegarLoop]: Abstraction has 51156 states and 72420 transitions. [2024-11-08 18:36:20,916 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:36:20,917 INFO L276 IsEmpty]: Start isEmpty. Operand 51156 states and 72420 transitions. [2024-11-08 18:36:20,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-08 18:36:20,924 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:36:20,924 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:36:20,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-08 18:36:20,924 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:36:20,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:36:20,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1937944795, now seen corresponding path program 1 times [2024-11-08 18:36:20,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:36:20,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926241399] [2024-11-08 18:36:20,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:36:20,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:36:20,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:36:21,082 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:36:21,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:36:21,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926241399] [2024-11-08 18:36:21,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926241399] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:36:21,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:36:21,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:36:21,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404558130] [2024-11-08 18:36:21,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:36:21,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:36:21,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:36:21,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:36:21,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:36:21,086 INFO L87 Difference]: Start difference. First operand 51156 states and 72420 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:36:23,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:36:23,072 INFO L93 Difference]: Finished difference Result 100760 states and 142374 transitions. [2024-11-08 18:36:23,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:36:23,072 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2024-11-08 18:36:23,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:36:23,131 INFO L225 Difference]: With dead ends: 100760 [2024-11-08 18:36:23,131 INFO L226 Difference]: Without dead ends: 51158 [2024-11-08 18:36:23,158 INFO L431 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 [2024-11-08 18:36:23,159 INFO L432 NwaCegarLoop]: 1606 mSDtfsCounter, 53 mSDsluCounter, 1551 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 3157 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:36:23,159 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 3157 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:36:23,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51158 states. [2024-11-08 18:36:25,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51158 to 51156. [2024-11-08 18:36:25,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51156 states, 51154 states have (on average 1.40227548187825) internal successors, (71732), 51155 states have internal predecessors, (71732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:36:25,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51156 states to 51156 states and 71732 transitions. [2024-11-08 18:36:25,858 INFO L78 Accepts]: Start accepts. Automaton has 51156 states and 71732 transitions. Word has length 93 [2024-11-08 18:36:25,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:36:25,859 INFO L471 AbstractCegarLoop]: Abstraction has 51156 states and 71732 transitions. [2024-11-08 18:36:25,859 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:36:25,859 INFO L276 IsEmpty]: Start isEmpty. Operand 51156 states and 71732 transitions. [2024-11-08 18:36:25,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-08 18:36:25,864 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:36:25,864 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:36:25,864 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-08 18:36:25,865 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:36:25,865 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:36:25,865 INFO L85 PathProgramCache]: Analyzing trace with hash -868635337, now seen corresponding path program 1 times [2024-11-08 18:36:25,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:36:25,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857659687] [2024-11-08 18:36:25,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:36:25,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:36:25,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:36:26,007 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:36:26,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:36:26,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857659687] [2024-11-08 18:36:26,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857659687] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:36:26,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:36:26,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:36:26,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61066498] [2024-11-08 18:36:26,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:36:26,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:36:26,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:36:26,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:36:26,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:36:26,009 INFO L87 Difference]: Start difference. First operand 51156 states and 71732 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:36:26,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:36:26,881 INFO L93 Difference]: Finished difference Result 69422 states and 97437 transitions. [2024-11-08 18:36:26,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:36:26,882 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2024-11-08 18:36:26,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:36:26,902 INFO L225 Difference]: With dead ends: 69422 [2024-11-08 18:36:26,903 INFO L226 Difference]: Without dead ends: 19820 [2024-11-08 18:36:26,923 INFO L431 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 [2024-11-08 18:36:26,924 INFO L432 NwaCegarLoop]: 1604 mSDtfsCounter, 47 mSDsluCounter, 1550 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 3154 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:36:26,924 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 3154 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:36:26,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19820 states. [2024-11-08 18:36:27,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19820 to 19811. [2024-11-08 18:36:27,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19811 states, 19809 states have (on average 1.4096117926195164) internal successors, (27923), 19810 states have internal predecessors, (27923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:36:27,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19811 states to 19811 states and 27923 transitions. [2024-11-08 18:36:27,708 INFO L78 Accepts]: Start accepts. Automaton has 19811 states and 27923 transitions. Word has length 94 [2024-11-08 18:36:27,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:36:27,709 INFO L471 AbstractCegarLoop]: Abstraction has 19811 states and 27923 transitions. [2024-11-08 18:36:27,709 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:36:27,709 INFO L276 IsEmpty]: Start isEmpty. Operand 19811 states and 27923 transitions. [2024-11-08 18:36:27,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-08 18:36:27,713 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:36:27,714 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:36:27,714 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-08 18:36:27,714 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:36:27,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:36:27,715 INFO L85 PathProgramCache]: Analyzing trace with hash -752986803, now seen corresponding path program 1 times [2024-11-08 18:36:27,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:36:27,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548101722] [2024-11-08 18:36:27,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:36:27,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:36:27,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:36:27,902 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:36:27,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:36:27,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548101722] [2024-11-08 18:36:27,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548101722] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:36:27,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:36:27,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:36:27,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188845286] [2024-11-08 18:36:27,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:36:27,904 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:36:27,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:36:27,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:36:27,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:36:27,906 INFO L87 Difference]: Start difference. First operand 19811 states and 27923 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:36:28,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:36:28,508 INFO L93 Difference]: Finished difference Result 28935 states and 40645 transitions. [2024-11-08 18:36:28,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:36:28,509 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2024-11-08 18:36:28,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:36:28,529 INFO L225 Difference]: With dead ends: 28935 [2024-11-08 18:36:28,530 INFO L226 Difference]: Without dead ends: 10693 [2024-11-08 18:36:28,543 INFO L431 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 [2024-11-08 18:36:28,544 INFO L432 NwaCegarLoop]: 1598 mSDtfsCounter, 49 mSDsluCounter, 1535 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 3133 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:36:28,544 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 3133 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:36:28,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10693 states. [2024-11-08 18:36:28,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10693 to 10691. [2024-11-08 18:36:28,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10691 states, 10689 states have (on average 1.4110768079333895) internal successors, (15083), 10690 states have internal predecessors, (15083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:36:29,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10691 states to 10691 states and 15083 transitions. [2024-11-08 18:36:29,009 INFO L78 Accepts]: Start accepts. Automaton has 10691 states and 15083 transitions. Word has length 95 [2024-11-08 18:36:29,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:36:29,010 INFO L471 AbstractCegarLoop]: Abstraction has 10691 states and 15083 transitions. [2024-11-08 18:36:29,010 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:36:29,010 INFO L276 IsEmpty]: Start isEmpty. Operand 10691 states and 15083 transitions. [2024-11-08 18:36:29,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-08 18:36:29,013 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:36:29,014 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:36:29,014 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-08 18:36:29,014 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:36:29,014 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:36:29,015 INFO L85 PathProgramCache]: Analyzing trace with hash -793321409, now seen corresponding path program 1 times [2024-11-08 18:36:29,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:36:29,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779041177] [2024-11-08 18:36:29,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:36:29,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:36:29,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:36:29,241 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:36:29,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:36:29,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779041177] [2024-11-08 18:36:29,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779041177] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:36:29,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:36:29,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:36:29,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800203038] [2024-11-08 18:36:29,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:36:29,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:36:29,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:36:29,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:36:29,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:36:29,244 INFO L87 Difference]: Start difference. First operand 10691 states and 15083 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:36:29,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:36:29,451 INFO L93 Difference]: Finished difference Result 15255 states and 21385 transitions. [2024-11-08 18:36:29,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:36:29,451 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2024-11-08 18:36:29,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:36:29,457 INFO L225 Difference]: With dead ends: 15255 [2024-11-08 18:36:29,457 INFO L226 Difference]: Without dead ends: 6133 [2024-11-08 18:36:29,461 INFO L431 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 [2024-11-08 18:36:29,464 INFO L432 NwaCegarLoop]: 1591 mSDtfsCounter, 46 mSDsluCounter, 1527 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 3118 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:36:29,465 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 3118 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:36:29,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6133 states. [2024-11-08 18:36:29,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6133 to 6131. [2024-11-08 18:36:29,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6131 states, 6129 states have (on average 1.4232338064937184) internal successors, (8723), 6130 states have internal predecessors, (8723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:36:29,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6131 states to 6131 states and 8723 transitions. [2024-11-08 18:36:29,593 INFO L78 Accepts]: Start accepts. Automaton has 6131 states and 8723 transitions. Word has length 97 [2024-11-08 18:36:29,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:36:29,594 INFO L471 AbstractCegarLoop]: Abstraction has 6131 states and 8723 transitions. [2024-11-08 18:36:29,594 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:36:29,594 INFO L276 IsEmpty]: Start isEmpty. Operand 6131 states and 8723 transitions. [2024-11-08 18:36:29,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-08 18:36:29,595 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:36:29,596 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 18:36:29,596 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-08 18:36:29,596 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:36:29,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:36:29,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1316975025, now seen corresponding path program 1 times [2024-11-08 18:36:29,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:36:29,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693054880] [2024-11-08 18:36:29,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:36:29,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:36:29,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:36:29,715 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:36:29,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:36:29,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693054880] [2024-11-08 18:36:29,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693054880] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:36:29,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:36:29,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:36:29,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098819015] [2024-11-08 18:36:29,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:36:29,717 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:36:29,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:36:29,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:36:29,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:36:29,718 INFO L87 Difference]: Start difference. First operand 6131 states and 8723 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:36:29,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:36:29,831 INFO L93 Difference]: Finished difference Result 8415 states and 11845 transitions. [2024-11-08 18:36:29,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:36:29,832 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2024-11-08 18:36:29,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:36:29,839 INFO L225 Difference]: With dead ends: 8415 [2024-11-08 18:36:29,839 INFO L226 Difference]: Without dead ends: 3853 [2024-11-08 18:36:29,842 INFO L431 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 [2024-11-08 18:36:29,843 INFO L432 NwaCegarLoop]: 1584 mSDtfsCounter, 43 mSDsluCounter, 1519 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 3103 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:36:29,843 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 3103 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:36:29,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3853 states. [2024-11-08 18:36:29,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3853 to 3851. [2024-11-08 18:36:29,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3851 states, 3849 states have (on average 1.4479085476747207) internal successors, (5573), 3850 states have internal predecessors, (5573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:36:29,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3851 states to 3851 states and 5573 transitions. [2024-11-08 18:36:29,926 INFO L78 Accepts]: Start accepts. Automaton has 3851 states and 5573 transitions. Word has length 99 [2024-11-08 18:36:29,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:36:29,927 INFO L471 AbstractCegarLoop]: Abstraction has 3851 states and 5573 transitions. [2024-11-08 18:36:29,927 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:36:29,927 INFO L276 IsEmpty]: Start isEmpty. Operand 3851 states and 5573 transitions. [2024-11-08 18:36:29,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-08 18:36:29,928 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:36:29,929 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:36:29,929 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-08 18:36:29,929 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:36:29,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:36:29,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1142106531, now seen corresponding path program 1 times [2024-11-08 18:36:29,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:36:29,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038443754] [2024-11-08 18:36:29,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:36:29,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:36:29,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:36:30,056 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:36:30,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:36:30,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038443754] [2024-11-08 18:36:30,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038443754] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:36:30,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:36:30,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:36:30,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997372130] [2024-11-08 18:36:30,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:36:30,058 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:36:30,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:36:30,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:36:30,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:36:30,059 INFO L87 Difference]: Start difference. First operand 3851 states and 5573 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:36:30,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:36:30,149 INFO L93 Difference]: Finished difference Result 4995 states and 7120 transitions. [2024-11-08 18:36:30,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:36:30,150 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 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 101 [2024-11-08 18:36:30,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:36:30,157 INFO L225 Difference]: With dead ends: 4995 [2024-11-08 18:36:30,158 INFO L226 Difference]: Without dead ends: 2713 [2024-11-08 18:36:30,160 INFO L431 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 [2024-11-08 18:36:30,161 INFO L432 NwaCegarLoop]: 1577 mSDtfsCounter, 40 mSDsluCounter, 1511 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 3088 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:36:30,161 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 3088 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:36:30,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2713 states. [2024-11-08 18:36:30,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2713 to 2711. [2024-11-08 18:36:30,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2711 states, 2709 states have (on average 1.481358434846807) internal successors, (4013), 2710 states have internal predecessors, (4013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:36:30,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2711 states to 2711 states and 4013 transitions. [2024-11-08 18:36:30,293 INFO L78 Accepts]: Start accepts. Automaton has 2711 states and 4013 transitions. Word has length 101 [2024-11-08 18:36:30,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:36:30,294 INFO L471 AbstractCegarLoop]: Abstraction has 2711 states and 4013 transitions. [2024-11-08 18:36:30,298 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:36:30,298 INFO L276 IsEmpty]: Start isEmpty. Operand 2711 states and 4013 transitions. [2024-11-08 18:36:30,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-08 18:36:30,299 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:36:30,300 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:36:30,300 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-08 18:36:30,300 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:36:30,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:36:30,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1334499307, now seen corresponding path program 1 times [2024-11-08 18:36:30,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:36:30,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207228062] [2024-11-08 18:36:30,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:36:30,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:36:30,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:36:31,825 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:36:31,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:36:31,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207228062] [2024-11-08 18:36:31,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207228062] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:36:31,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407760478] [2024-11-08 18:36:31,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:36:31,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:36:31,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462b72e0-930b-4c7c-bd83-9b6a90bb9941/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:36:31,830 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462b72e0-930b-4c7c-bd83-9b6a90bb9941/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:36:31,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462b72e0-930b-4c7c-bd83-9b6a90bb9941/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 18:36:32,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:36:32,059 INFO L255 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-08 18:36:32,069 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:36:32,646 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:36:32,647 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:36:33,735 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:36:33,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1407760478] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:36:33,735 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:36:33,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7, 6] total 22 [2024-11-08 18:36:33,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827417684] [2024-11-08 18:36:33,736 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:36:33,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-08 18:36:33,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:36:33,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-08 18:36:33,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=395, Unknown=0, NotChecked=0, Total=462 [2024-11-08 18:36:33,741 INFO L87 Difference]: Start difference. First operand 2711 states and 4013 transitions. Second operand has 22 states, 22 states have (on average 13.454545454545455) internal successors, (296), 22 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:36:43,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:36:43,430 INFO L93 Difference]: Finished difference Result 13559 states and 18351 transitions. [2024-11-08 18:36:43,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2024-11-08 18:36:43,431 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 13.454545454545455) internal successors, (296), 22 states have internal predecessors, (296), 0 states have call successors, (0), 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 103 [2024-11-08 18:36:43,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:36:43,445 INFO L225 Difference]: With dead ends: 13559 [2024-11-08 18:36:43,445 INFO L226 Difference]: Without dead ends: 12319 [2024-11-08 18:36:43,451 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4222 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=1877, Invalid=9679, Unknown=0, NotChecked=0, Total=11556 [2024-11-08 18:36:43,451 INFO L432 NwaCegarLoop]: 1556 mSDtfsCounter, 20400 mSDsluCounter, 8347 mSDsCounter, 0 mSdLazyCounter, 1953 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20400 SdHoareTripleChecker+Valid, 9903 SdHoareTripleChecker+Invalid, 2047 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1953 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-08 18:36:43,452 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20400 Valid, 9903 Invalid, 2047 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [94 Valid, 1953 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-08 18:36:43,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12319 states. [2024-11-08 18:36:43,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12319 to 11257. [2024-11-08 18:36:43,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11257 states, 11255 states have (on average 1.352998667258996) internal successors, (15228), 11256 states have internal predecessors, (15228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:36:43,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11257 states to 11257 states and 15228 transitions. [2024-11-08 18:36:43,825 INFO L78 Accepts]: Start accepts. Automaton has 11257 states and 15228 transitions. Word has length 103 [2024-11-08 18:36:43,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:36:43,826 INFO L471 AbstractCegarLoop]: Abstraction has 11257 states and 15228 transitions. [2024-11-08 18:36:43,826 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 13.454545454545455) internal successors, (296), 22 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:36:43,827 INFO L276 IsEmpty]: Start isEmpty. Operand 11257 states and 15228 transitions. [2024-11-08 18:36:43,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-08 18:36:43,829 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:36:43,829 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 18:36:43,856 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462b72e0-930b-4c7c-bd83-9b6a90bb9941/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 18:36:44,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462b72e0-930b-4c7c-bd83-9b6a90bb9941/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-08 18:36:44,034 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:36:44,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:36:44,034 INFO L85 PathProgramCache]: Analyzing trace with hash 810887087, now seen corresponding path program 1 times [2024-11-08 18:36:44,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:36:44,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803120583] [2024-11-08 18:36:44,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:36:44,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:36:44,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:36:45,381 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:36:45,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:36:45,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803120583] [2024-11-08 18:36:45,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803120583] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:36:45,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [656054796] [2024-11-08 18:36:45,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:36:45,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:36:45,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462b72e0-930b-4c7c-bd83-9b6a90bb9941/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:36:45,385 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462b72e0-930b-4c7c-bd83-9b6a90bb9941/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:36:45,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462b72e0-930b-4c7c-bd83-9b6a90bb9941/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 18:36:45,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:36:45,581 INFO L255 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-08 18:36:45,585 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:36:46,627 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 13 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:36:46,628 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:36:48,403 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 13 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:36:48,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [656054796] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:36:48,404 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:36:48,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 32 [2024-11-08 18:36:48,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71070268] [2024-11-08 18:36:48,404 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:36:48,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-08 18:36:48,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:36:48,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-08 18:36:48,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=917, Unknown=0, NotChecked=0, Total=1056 [2024-11-08 18:36:48,407 INFO L87 Difference]: Start difference. First operand 11257 states and 15228 transitions. Second operand has 33 states, 33 states have (on average 8.242424242424242) internal successors, (272), 32 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:36:53,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:36:53,341 INFO L93 Difference]: Finished difference Result 53423 states and 71091 transitions. [2024-11-08 18:36:53,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-11-08 18:36:53,342 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 8.242424242424242) internal successors, (272), 32 states have internal predecessors, (272), 0 states have call successors, (0), 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 104 [2024-11-08 18:36:53,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:36:53,377 INFO L225 Difference]: With dead ends: 53423 [2024-11-08 18:36:53,377 INFO L226 Difference]: Without dead ends: 43817 [2024-11-08 18:36:53,386 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1144 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1113, Invalid=4289, Unknown=0, NotChecked=0, Total=5402 [2024-11-08 18:36:53,387 INFO L432 NwaCegarLoop]: 1507 mSDtfsCounter, 24683 mSDsluCounter, 8141 mSDsCounter, 0 mSdLazyCounter, 1295 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24683 SdHoareTripleChecker+Valid, 9648 SdHoareTripleChecker+Invalid, 1333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:36:53,387 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24683 Valid, 9648 Invalid, 1333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1295 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-08 18:36:53,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43817 states. [2024-11-08 18:36:55,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43817 to 43437. [2024-11-08 18:36:55,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43437 states, 43435 states have (on average 1.3077702313802233) internal successors, (56803), 43436 states have internal predecessors, (56803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:36:55,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43437 states to 43437 states and 56803 transitions. [2024-11-08 18:36:55,484 INFO L78 Accepts]: Start accepts. Automaton has 43437 states and 56803 transitions. Word has length 104 [2024-11-08 18:36:55,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:36:55,485 INFO L471 AbstractCegarLoop]: Abstraction has 43437 states and 56803 transitions. [2024-11-08 18:36:55,485 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 8.242424242424242) internal successors, (272), 32 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:36:55,485 INFO L276 IsEmpty]: Start isEmpty. Operand 43437 states and 56803 transitions. [2024-11-08 18:36:55,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-08 18:36:55,488 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:36:55,489 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 18:36:55,518 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462b72e0-930b-4c7c-bd83-9b6a90bb9941/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-08 18:36:55,689 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462b72e0-930b-4c7c-bd83-9b6a90bb9941/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-08 18:36:55,689 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:36:55,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:36:55,690 INFO L85 PathProgramCache]: Analyzing trace with hash 2010363311, now seen corresponding path program 1 times [2024-11-08 18:36:55,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:36:55,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113805087] [2024-11-08 18:36:55,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:36:55,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:36:55,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:36:56,299 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:36:56,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:36:56,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113805087] [2024-11-08 18:36:56,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113805087] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:36:56,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588161708] [2024-11-08 18:36:56,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:36:56,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:36:56,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462b72e0-930b-4c7c-bd83-9b6a90bb9941/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:36:56,301 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462b72e0-930b-4c7c-bd83-9b6a90bb9941/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:36:56,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462b72e0-930b-4c7c-bd83-9b6a90bb9941/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 18:36:56,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:36:56,500 INFO L255 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-08 18:36:56,504 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:36:58,180 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:36:58,181 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:37:00,646 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:37:00,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [588161708] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:37:00,647 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:37:00,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 14, 12] total 32 [2024-11-08 18:37:00,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102207943] [2024-11-08 18:37:00,647 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:37:00,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-08 18:37:00,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:37:00,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-08 18:37:00,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=857, Unknown=0, NotChecked=0, Total=992 [2024-11-08 18:37:00,650 INFO L87 Difference]: Start difference. First operand 43437 states and 56803 transitions. Second operand has 32 states, 32 states have (on average 8.625) internal successors, (276), 32 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:37:15,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:37:15,008 INFO L93 Difference]: Finished difference Result 251669 states and 327455 transitions. [2024-11-08 18:37:15,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-11-08 18:37:15,008 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 8.625) internal successors, (276), 32 states have internal predecessors, (276), 0 states have call successors, (0), 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 104 [2024-11-08 18:37:15,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:37:15,453 INFO L225 Difference]: With dead ends: 251669 [2024-11-08 18:37:15,453 INFO L226 Difference]: Without dead ends: 209961 [2024-11-08 18:37:15,493 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2120 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=1457, Invalid=5853, Unknown=0, NotChecked=0, Total=7310 [2024-11-08 18:37:15,494 INFO L432 NwaCegarLoop]: 1545 mSDtfsCounter, 23023 mSDsluCounter, 8584 mSDsCounter, 0 mSdLazyCounter, 1350 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23023 SdHoareTripleChecker+Valid, 10129 SdHoareTripleChecker+Invalid, 1430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-08 18:37:15,494 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23023 Valid, 10129 Invalid, 1430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1350 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-08 18:37:15,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209961 states. [2024-11-08 18:37:24,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209961 to 209293. [2024-11-08 18:37:24,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209293 states, 209291 states have (on average 1.2768203123880149) internal successors, (267227), 209292 states have internal predecessors, (267227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:37:25,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209293 states to 209293 states and 267227 transitions. [2024-11-08 18:37:25,008 INFO L78 Accepts]: Start accepts. Automaton has 209293 states and 267227 transitions. Word has length 104 [2024-11-08 18:37:25,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:37:25,008 INFO L471 AbstractCegarLoop]: Abstraction has 209293 states and 267227 transitions. [2024-11-08 18:37:25,008 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 8.625) internal successors, (276), 32 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:37:25,008 INFO L276 IsEmpty]: Start isEmpty. Operand 209293 states and 267227 transitions. [2024-11-08 18:37:25,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-08 18:37:25,011 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:37:25,011 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 18:37:25,025 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462b72e0-930b-4c7c-bd83-9b6a90bb9941/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-08 18:37:25,212 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462b72e0-930b-4c7c-bd83-9b6a90bb9941/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-08 18:37:25,212 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:37:25,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:37:25,213 INFO L85 PathProgramCache]: Analyzing trace with hash 37426975, now seen corresponding path program 1 times [2024-11-08 18:37:25,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:37:25,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082517154] [2024-11-08 18:37:25,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:37:25,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:37:25,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:37:26,348 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:37:26,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:37:26,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082517154] [2024-11-08 18:37:26,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082517154] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:37:26,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1615567387] [2024-11-08 18:37:26,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:37:26,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:37:26,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462b72e0-930b-4c7c-bd83-9b6a90bb9941/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:37:26,352 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462b72e0-930b-4c7c-bd83-9b6a90bb9941/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:37:26,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_462b72e0-930b-4c7c-bd83-9b6a90bb9941/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 18:37:26,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:37:26,564 INFO L255 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-08 18:37:26,570 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:37:27,273 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:37:27,273 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:37:28,931 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:37:28,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1615567387] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:37:28,931 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:37:28,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-11-08 18:37:28,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599125682] [2024-11-08 18:37:28,932 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:37:28,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-08 18:37:28,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:37:28,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-08 18:37:28,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=520, Unknown=0, NotChecked=0, Total=600 [2024-11-08 18:37:28,934 INFO L87 Difference]: Start difference. First operand 209293 states and 267227 transitions. Second operand has 25 states, 25 states have (on average 12.08) internal successors, (302), 24 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)