./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label49+token_ring.13.cil-2.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_64222afe-6178-4401-8ee6-c2d986750921/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64222afe-6178-4401-8ee6-c2d986750921/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64222afe-6178-4401-8ee6-c2d986750921/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64222afe-6178-4401-8ee6-c2d986750921/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label49+token_ring.13.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64222afe-6178-4401-8ee6-c2d986750921/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64222afe-6178-4401-8ee6-c2d986750921/bin/utaipan-verify-YMUCfTKeje --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 403fd15020889f127d837ab127be00e68706cbd07d6d3bacf6b25555a5c09975 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 06:17:58,515 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 06:17:58,609 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64222afe-6178-4401-8ee6-c2d986750921/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-09 06:17:58,614 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 06:17:58,618 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 06:17:58,649 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 06:17:58,650 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 06:17:58,651 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 06:17:58,651 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 06:17:58,652 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 06:17:58,652 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 06:17:58,653 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 06:17:58,653 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 06:17:58,655 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 06:17:58,658 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 06:17:58,659 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 06:17:58,659 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 06:17:58,659 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 06:17:58,660 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 06:17:58,660 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 06:17:58,660 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 06:17:58,661 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 06:17:58,662 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 06:17:58,663 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 06:17:58,664 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 06:17:58,664 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 06:17:58,664 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 06:17:58,664 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 06:17:58,665 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 06:17:58,665 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 06:17:58,665 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 06:17:58,678 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 06:17:58,678 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 06:17:58,679 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 06:17:58,679 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 06:17:58,679 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 06:17:58,680 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 06:17:58,680 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 06:17:58,680 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 06:17:58,681 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 06:17:58,681 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 06:17:58,682 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 06:17:58,682 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 06:17:58,682 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 06:17:58,683 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 06:17:58,683 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 06:17:58,684 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 06:17:58,684 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_64222afe-6178-4401-8ee6-c2d986750921/bin/utaipan-verify-YMUCfTKeje/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64222afe-6178-4401-8ee6-c2d986750921/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 403fd15020889f127d837ab127be00e68706cbd07d6d3bacf6b25555a5c09975 [2024-11-09 06:17:58,972 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 06:17:59,000 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 06:17:59,003 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 06:17:59,005 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 06:17:59,005 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 06:17:59,007 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64222afe-6178-4401-8ee6-c2d986750921/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/combinations/Problem05_label49+token_ring.13.cil-2.c Unable to find full path for "g++" [2024-11-09 06:18:01,016 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 06:18:01,859 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 06:18:01,861 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64222afe-6178-4401-8ee6-c2d986750921/sv-benchmarks/c/combinations/Problem05_label49+token_ring.13.cil-2.c [2024-11-09 06:18:01,930 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64222afe-6178-4401-8ee6-c2d986750921/bin/utaipan-verify-YMUCfTKeje/data/3870a2a0f/8901d979d3c24167bac9243608fb8754/FLAG23233a657 [2024-11-09 06:18:02,089 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64222afe-6178-4401-8ee6-c2d986750921/bin/utaipan-verify-YMUCfTKeje/data/3870a2a0f/8901d979d3c24167bac9243608fb8754 [2024-11-09 06:18:02,094 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 06:18:02,096 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 06:18:02,097 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 06:18:02,097 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 06:18:02,104 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 06:18:02,104 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:18:02" (1/1) ... [2024-11-09 06:18:02,129 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@148c7af8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:18:02, skipping insertion in model container [2024-11-09 06:18:02,129 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:18:02" (1/1) ... [2024-11-09 06:18:02,394 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 06:18:04,849 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_64222afe-6178-4401-8ee6-c2d986750921/sv-benchmarks/c/combinations/Problem05_label49+token_ring.13.cil-2.c[380593,380606] [2024-11-09 06:18:04,893 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_64222afe-6178-4401-8ee6-c2d986750921/sv-benchmarks/c/combinations/Problem05_label49+token_ring.13.cil-2.c[383339,383352] [2024-11-09 06:18:05,314 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 06:18:05,328 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 06:18:06,666 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_64222afe-6178-4401-8ee6-c2d986750921/sv-benchmarks/c/combinations/Problem05_label49+token_ring.13.cil-2.c[380593,380606] [2024-11-09 06:18:06,675 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_64222afe-6178-4401-8ee6-c2d986750921/sv-benchmarks/c/combinations/Problem05_label49+token_ring.13.cil-2.c[383339,383352] [2024-11-09 06:18:06,757 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 06:18:06,825 INFO L204 MainTranslator]: Completed translation [2024-11-09 06:18:06,825 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:18:06 WrapperNode [2024-11-09 06:18:06,825 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 06:18:06,826 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 06:18:06,826 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 06:18:06,826 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 06:18:06,832 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:18:06" (1/1) ... [2024-11-09 06:18:06,924 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:18:06" (1/1) ... [2024-11-09 06:18:07,423 INFO L138 Inliner]: procedures = 70, calls = 80, calls flagged for inlining = 48, calls inlined = 48, statements flattened = 13276 [2024-11-09 06:18:07,424 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 06:18:07,425 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 06:18:07,425 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 06:18:07,425 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 06:18:07,435 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:18:06" (1/1) ... [2024-11-09 06:18:07,435 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:18:06" (1/1) ... [2024-11-09 06:18:07,500 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:18:06" (1/1) ... [2024-11-09 06:18:07,501 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:18:06" (1/1) ... [2024-11-09 06:18:07,777 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:18:06" (1/1) ... [2024-11-09 06:18:07,851 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:18:06" (1/1) ... [2024-11-09 06:18:07,875 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:18:06" (1/1) ... [2024-11-09 06:18:07,901 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:18:06" (1/1) ... [2024-11-09 06:18:07,965 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 06:18:07,966 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 06:18:07,966 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 06:18:07,966 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 06:18:07,967 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:18:06" (1/1) ... [2024-11-09 06:18:07,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 06:18:07,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64222afe-6178-4401-8ee6-c2d986750921/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:18:08,006 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64222afe-6178-4401-8ee6-c2d986750921/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 06:18:08,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64222afe-6178-4401-8ee6-c2d986750921/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 06:18:08,046 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 06:18:08,047 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2024-11-09 06:18:08,047 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2024-11-09 06:18:08,047 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-09 06:18:08,047 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-09 06:18:08,047 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2024-11-09 06:18:08,047 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2024-11-09 06:18:08,048 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2024-11-09 06:18:08,048 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2024-11-09 06:18:08,048 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2024-11-09 06:18:08,048 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2024-11-09 06:18:08,048 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2024-11-09 06:18:08,048 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2024-11-09 06:18:08,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 06:18:08,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 06:18:08,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 06:18:08,218 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 06:18:08,220 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 06:18:18,690 INFO L? ?]: Removed 1761 outVars from TransFormulas that were not future-live. [2024-11-09 06:18:18,690 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 06:18:21,570 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 06:18:21,573 INFO L316 CfgBuilder]: Removed 17 assume(true) statements. [2024-11-09 06:18:21,574 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 06:18:21 BoogieIcfgContainer [2024-11-09 06:18:21,574 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 06:18:21,578 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 06:18:21,578 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 06:18:21,582 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 06:18:21,583 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 06:18:02" (1/3) ... [2024-11-09 06:18:21,584 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45f03488 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:18:21, skipping insertion in model container [2024-11-09 06:18:21,584 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:18:06" (2/3) ... [2024-11-09 06:18:21,585 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45f03488 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:18:21, skipping insertion in model container [2024-11-09 06:18:21,585 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 06:18:21" (3/3) ... [2024-11-09 06:18:21,587 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label49+token_ring.13.cil-2.c [2024-11-09 06:18:21,613 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 06:18:21,613 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-09 06:18:21,758 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 06:18:21,769 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=FINITE_AUTOMATA, 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;@6cc3ab0a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 06:18:21,769 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-09 06:18:21,790 INFO L276 IsEmpty]: Start isEmpty. Operand has 1856 states, 1820 states have (on average 1.9467032967032967) internal successors, (3543), 1823 states have internal predecessors, (3543), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2024-11-09 06:18:21,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-09 06:18:21,806 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:18:21,806 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] [2024-11-09 06:18:21,807 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:18:21,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:18:21,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1388053048, now seen corresponding path program 1 times [2024-11-09 06:18:21,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:18:21,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551055424] [2024-11-09 06:18:21,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:18:21,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:18:22,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:18:22,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:18:22,634 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:18:22,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551055424] [2024-11-09 06:18:22,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551055424] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:18:22,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:18:22,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 06:18:22,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142700041] [2024-11-09 06:18:22,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:18:22,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 06:18:22,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:18:22,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 06:18:22,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 06:18:22,703 INFO L87 Difference]: Start difference. First operand has 1856 states, 1820 states have (on average 1.9467032967032967) internal successors, (3543), 1823 states have internal predecessors, (3543), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 06:18:24,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:18:24,011 INFO L93 Difference]: Finished difference Result 3908 states and 7525 transitions. [2024-11-09 06:18:24,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 06:18:24,014 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 70 [2024-11-09 06:18:24,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:18:24,039 INFO L225 Difference]: With dead ends: 3908 [2024-11-09 06:18:24,040 INFO L226 Difference]: Without dead ends: 2051 [2024-11-09 06:18:24,050 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 06:18:24,054 INFO L432 NwaCegarLoop]: 3569 mSDtfsCounter, 3840 mSDsluCounter, 3467 mSDsCounter, 0 mSdLazyCounter, 742 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3840 SdHoareTripleChecker+Valid, 7036 SdHoareTripleChecker+Invalid, 756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 742 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-09 06:18:24,056 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3840 Valid, 7036 Invalid, 756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 742 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-09 06:18:24,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2051 states. [2024-11-09 06:18:24,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2051 to 2050. [2024-11-09 06:18:24,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2050 states, 1986 states have (on average 1.903323262839879) internal successors, (3780), 1989 states have internal predecessors, (3780), 50 states have call successors, (50), 12 states have call predecessors, (50), 12 states have return successors, (50), 49 states have call predecessors, (50), 50 states have call successors, (50) [2024-11-09 06:18:24,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2050 states to 2050 states and 3880 transitions. [2024-11-09 06:18:24,244 INFO L78 Accepts]: Start accepts. Automaton has 2050 states and 3880 transitions. Word has length 70 [2024-11-09 06:18:24,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:18:24,245 INFO L471 AbstractCegarLoop]: Abstraction has 2050 states and 3880 transitions. [2024-11-09 06:18:24,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 06:18:24,245 INFO L276 IsEmpty]: Start isEmpty. Operand 2050 states and 3880 transitions. [2024-11-09 06:18:24,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-09 06:18:24,258 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:18:24,263 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:18:24,263 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 06:18:24,263 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:18:24,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:18:24,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1683020185, now seen corresponding path program 1 times [2024-11-09 06:18:24,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:18:24,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69123908] [2024-11-09 06:18:24,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:18:24,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:18:24,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:18:24,812 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-09 06:18:24,812 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:18:24,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69123908] [2024-11-09 06:18:24,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69123908] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:18:24,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908937664] [2024-11-09 06:18:24,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:18:24,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:18:24,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64222afe-6178-4401-8ee6-c2d986750921/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:18:24,817 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64222afe-6178-4401-8ee6-c2d986750921/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:18:24,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64222afe-6178-4401-8ee6-c2d986750921/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 06:18:25,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:18:25,158 INFO L255 TraceCheckSpWp]: Trace formula consists of 988 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 06:18:25,168 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:18:25,286 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-09 06:18:25,286 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:18:25,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [908937664] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:18:25,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:18:25,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-09 06:18:25,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949387240] [2024-11-09 06:18:25,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:18:25,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 06:18:25,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:18:25,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 06:18:25,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:18:25,293 INFO L87 Difference]: Start difference. First operand 2050 states and 3880 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 2 states have internal predecessors, (108), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-09 06:18:26,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:18:26,088 INFO L93 Difference]: Finished difference Result 2851 states and 5109 transitions. [2024-11-09 06:18:26,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 06:18:26,089 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 2 states have internal predecessors, (108), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 144 [2024-11-09 06:18:26,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:18:26,104 INFO L225 Difference]: With dead ends: 2851 [2024-11-09 06:18:26,104 INFO L226 Difference]: Without dead ends: 2447 [2024-11-09 06:18:26,107 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:18:26,108 INFO L432 NwaCegarLoop]: 3373 mSDtfsCounter, 3539 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3539 SdHoareTripleChecker+Valid, 3627 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 06:18:26,109 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3539 Valid, 3627 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 06:18:26,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2447 states. [2024-11-09 06:18:26,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2447 to 2443. [2024-11-09 06:18:26,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2443 states, 2323 states have (on average 1.8411536805854498) internal successors, (4277), 2327 states have internal predecessors, (4277), 94 states have call successors, (94), 24 states have call predecessors, (94), 24 states have return successors, (94), 92 states have call predecessors, (94), 94 states have call successors, (94) [2024-11-09 06:18:26,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2443 states to 2443 states and 4465 transitions. [2024-11-09 06:18:26,231 INFO L78 Accepts]: Start accepts. Automaton has 2443 states and 4465 transitions. Word has length 144 [2024-11-09 06:18:26,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:18:26,234 INFO L471 AbstractCegarLoop]: Abstraction has 2443 states and 4465 transitions. [2024-11-09 06:18:26,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 2 states have internal predecessors, (108), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-09 06:18:26,235 INFO L276 IsEmpty]: Start isEmpty. Operand 2443 states and 4465 transitions. [2024-11-09 06:18:26,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-09 06:18:26,241 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:18:26,241 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:18:26,266 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64222afe-6178-4401-8ee6-c2d986750921/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 06:18:26,443 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64222afe-6178-4401-8ee6-c2d986750921/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:18:26,444 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:18:26,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:18:26,445 INFO L85 PathProgramCache]: Analyzing trace with hash 696337879, now seen corresponding path program 1 times [2024-11-09 06:18:26,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:18:26,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531528306] [2024-11-09 06:18:26,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:18:26,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:18:26,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:18:26,783 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-09 06:18:26,784 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:18:26,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531528306] [2024-11-09 06:18:26,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531528306] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:18:26,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1626637589] [2024-11-09 06:18:26,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:18:26,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:18:26,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64222afe-6178-4401-8ee6-c2d986750921/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:18:26,789 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64222afe-6178-4401-8ee6-c2d986750921/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:18:26,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64222afe-6178-4401-8ee6-c2d986750921/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 06:18:27,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:18:27,076 INFO L255 TraceCheckSpWp]: Trace formula consists of 982 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 06:18:27,082 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:18:27,145 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-09 06:18:27,146 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:18:27,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1626637589] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:18:27,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:18:27,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-09 06:18:27,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650572487] [2024-11-09 06:18:27,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:18:27,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 06:18:27,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:18:27,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 06:18:27,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:18:27,150 INFO L87 Difference]: Start difference. First operand 2443 states and 4465 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-09 06:18:27,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:18:27,869 INFO L93 Difference]: Finished difference Result 4024 states and 6884 transitions. [2024-11-09 06:18:27,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 06:18:27,870 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 144 [2024-11-09 06:18:27,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:18:27,889 INFO L225 Difference]: With dead ends: 4024 [2024-11-09 06:18:27,890 INFO L226 Difference]: Without dead ends: 3227 [2024-11-09 06:18:27,896 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:18:27,898 INFO L432 NwaCegarLoop]: 3371 mSDtfsCounter, 3557 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3557 SdHoareTripleChecker+Valid, 3625 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 06:18:27,900 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3557 Valid, 3625 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 06:18:27,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3227 states. [2024-11-09 06:18:28,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3227 to 3221. [2024-11-09 06:18:28,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3221 states, 2991 states have (on average 1.7582748244734203) internal successors, (5259), 2997 states have internal predecessors, (5259), 180 states have call successors, (180), 48 states have call predecessors, (180), 48 states have return successors, (180), 176 states have call predecessors, (180), 180 states have call successors, (180) [2024-11-09 06:18:28,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3221 states to 3221 states and 5619 transitions. [2024-11-09 06:18:28,072 INFO L78 Accepts]: Start accepts. Automaton has 3221 states and 5619 transitions. Word has length 144 [2024-11-09 06:18:28,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:18:28,073 INFO L471 AbstractCegarLoop]: Abstraction has 3221 states and 5619 transitions. [2024-11-09 06:18:28,073 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-09 06:18:28,073 INFO L276 IsEmpty]: Start isEmpty. Operand 3221 states and 5619 transitions. [2024-11-09 06:18:28,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-09 06:18:28,082 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:18:28,082 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:18:28,104 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64222afe-6178-4401-8ee6-c2d986750921/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 06:18:28,282 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64222afe-6178-4401-8ee6-c2d986750921/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:18:28,283 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:18:28,284 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:18:28,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1288544619, now seen corresponding path program 1 times [2024-11-09 06:18:28,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:18:28,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444988085] [2024-11-09 06:18:28,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:18:28,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:18:28,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:18:28,568 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-09 06:18:28,568 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:18:28,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444988085] [2024-11-09 06:18:28,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444988085] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:18:28,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1850447384] [2024-11-09 06:18:28,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:18:28,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:18:28,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64222afe-6178-4401-8ee6-c2d986750921/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:18:28,575 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64222afe-6178-4401-8ee6-c2d986750921/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:18:28,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64222afe-6178-4401-8ee6-c2d986750921/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 06:18:28,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:18:28,890 INFO L255 TraceCheckSpWp]: Trace formula consists of 976 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 06:18:28,899 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:18:28,975 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-09 06:18:28,976 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:18:28,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1850447384] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:18:28,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:18:28,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-09 06:18:28,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964146226] [2024-11-09 06:18:28,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:18:28,979 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 06:18:28,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:18:28,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 06:18:28,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:18:28,980 INFO L87 Difference]: Start difference. First operand 3221 states and 5619 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-09 06:18:29,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:18:29,753 INFO L93 Difference]: Finished difference Result 6346 states and 10384 transitions. [2024-11-09 06:18:29,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 06:18:29,755 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 144 [2024-11-09 06:18:29,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:18:29,784 INFO L225 Difference]: With dead ends: 6346 [2024-11-09 06:18:29,785 INFO L226 Difference]: Without dead ends: 4771 [2024-11-09 06:18:29,793 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:18:29,796 INFO L432 NwaCegarLoop]: 3318 mSDtfsCounter, 3551 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3551 SdHoareTripleChecker+Valid, 3572 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 06:18:29,797 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3551 Valid, 3572 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 06:18:29,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4771 states. [2024-11-09 06:18:30,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4771 to 4761. [2024-11-09 06:18:30,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4761 states, 4315 states have (on average 1.6683661645422942) internal successors, (7199), 4325 states have internal predecessors, (7199), 348 states have call successors, (348), 96 states have call predecessors, (348), 96 states have return successors, (348), 340 states have call predecessors, (348), 348 states have call successors, (348) [2024-11-09 06:18:30,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4761 states to 4761 states and 7895 transitions. [2024-11-09 06:18:30,225 INFO L78 Accepts]: Start accepts. Automaton has 4761 states and 7895 transitions. Word has length 144 [2024-11-09 06:18:30,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:18:30,225 INFO L471 AbstractCegarLoop]: Abstraction has 4761 states and 7895 transitions. [2024-11-09 06:18:30,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-09 06:18:30,226 INFO L276 IsEmpty]: Start isEmpty. Operand 4761 states and 7895 transitions. [2024-11-09 06:18:30,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-09 06:18:30,235 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:18:30,235 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:18:30,258 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64222afe-6178-4401-8ee6-c2d986750921/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-09 06:18:30,435 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64222afe-6178-4401-8ee6-c2d986750921/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:18:30,436 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:18:30,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:18:30,437 INFO L85 PathProgramCache]: Analyzing trace with hash 987520467, now seen corresponding path program 1 times [2024-11-09 06:18:30,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:18:30,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979448227] [2024-11-09 06:18:30,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:18:30,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:18:30,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:18:30,659 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-09 06:18:30,659 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:18:30,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979448227] [2024-11-09 06:18:30,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979448227] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:18:30,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899804606] [2024-11-09 06:18:30,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:18:30,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:18:30,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64222afe-6178-4401-8ee6-c2d986750921/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:18:30,664 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64222afe-6178-4401-8ee6-c2d986750921/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:18:30,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64222afe-6178-4401-8ee6-c2d986750921/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 06:18:30,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:18:30,925 INFO L255 TraceCheckSpWp]: Trace formula consists of 970 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 06:18:30,930 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:18:30,979 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-09 06:18:30,981 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:18:30,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [899804606] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:18:30,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:18:30,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-09 06:18:30,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950619571] [2024-11-09 06:18:30,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:18:30,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 06:18:30,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:18:30,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 06:18:30,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:18:30,989 INFO L87 Difference]: Start difference. First operand 4761 states and 7895 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-09 06:18:31,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:18:31,726 INFO L93 Difference]: Finished difference Result 10942 states and 17284 transitions. [2024-11-09 06:18:31,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 06:18:31,727 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 144 [2024-11-09 06:18:31,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:18:31,765 INFO L225 Difference]: With dead ends: 10942 [2024-11-09 06:18:31,765 INFO L226 Difference]: Without dead ends: 7827 [2024-11-09 06:18:31,778 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:18:31,779 INFO L432 NwaCegarLoop]: 3318 mSDtfsCounter, 3560 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3560 SdHoareTripleChecker+Valid, 3572 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 06:18:31,780 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3560 Valid, 3572 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 06:18:31,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7827 states. [2024-11-09 06:18:32,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7827 to 7809. [2024-11-09 06:18:32,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7809 states, 6939 states have (on average 1.5897103329009943) internal successors, (11031), 6957 states have internal predecessors, (11031), 676 states have call successors, (676), 192 states have call predecessors, (676), 192 states have return successors, (676), 660 states have call predecessors, (676), 676 states have call successors, (676) [2024-11-09 06:18:32,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7809 states to 7809 states and 12383 transitions. [2024-11-09 06:18:32,080 INFO L78 Accepts]: Start accepts. Automaton has 7809 states and 12383 transitions. Word has length 144 [2024-11-09 06:18:32,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:18:32,081 INFO L471 AbstractCegarLoop]: Abstraction has 7809 states and 12383 transitions. [2024-11-09 06:18:32,081 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-09 06:18:32,081 INFO L276 IsEmpty]: Start isEmpty. Operand 7809 states and 12383 transitions. [2024-11-09 06:18:32,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-09 06:18:32,095 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:18:32,095 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:18:32,117 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64222afe-6178-4401-8ee6-c2d986750921/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-09 06:18:32,296 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64222afe-6178-4401-8ee6-c2d986750921/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:18:32,296 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:18:32,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:18:32,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1832213419, now seen corresponding path program 1 times [2024-11-09 06:18:32,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:18:32,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248698796] [2024-11-09 06:18:32,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:18:32,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:18:32,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:18:32,536 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-09 06:18:32,537 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:18:32,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248698796] [2024-11-09 06:18:32,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248698796] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:18:32,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1515368265] [2024-11-09 06:18:32,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:18:32,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:18:32,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64222afe-6178-4401-8ee6-c2d986750921/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:18:32,541 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64222afe-6178-4401-8ee6-c2d986750921/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:18:32,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64222afe-6178-4401-8ee6-c2d986750921/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 06:18:32,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:18:32,807 INFO L255 TraceCheckSpWp]: Trace formula consists of 964 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 06:18:32,811 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:18:32,889 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-09 06:18:32,889 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:18:32,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1515368265] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:18:32,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:18:32,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-09 06:18:32,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25479515] [2024-11-09 06:18:32,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:18:32,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 06:18:32,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:18:32,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 06:18:32,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:18:32,892 INFO L87 Difference]: Start difference. First operand 7809 states and 12383 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 2 states have internal predecessors, (117), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-09 06:18:33,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:18:33,953 INFO L93 Difference]: Finished difference Result 20038 states and 30884 transitions. [2024-11-09 06:18:33,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 06:18:33,954 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 2 states have internal predecessors, (117), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 144 [2024-11-09 06:18:33,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:18:34,059 INFO L225 Difference]: With dead ends: 20038 [2024-11-09 06:18:34,059 INFO L226 Difference]: Without dead ends: 13875 [2024-11-09 06:18:34,080 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:18:34,080 INFO L432 NwaCegarLoop]: 3318 mSDtfsCounter, 3530 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3530 SdHoareTripleChecker+Valid, 3572 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 06:18:34,081 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3530 Valid, 3572 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 06:18:34,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13875 states. [2024-11-09 06:18:34,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13875 to 13841. [2024-11-09 06:18:34,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13841 states, 12139 states have (on average 1.5321690419309664) internal successors, (18599), 12173 states have internal predecessors, (18599), 1316 states have call successors, (1316), 384 states have call predecessors, (1316), 384 states have return successors, (1316), 1284 states have call predecessors, (1316), 1316 states have call successors, (1316) [2024-11-09 06:18:34,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13841 states to 13841 states and 21231 transitions. [2024-11-09 06:18:34,596 INFO L78 Accepts]: Start accepts. Automaton has 13841 states and 21231 transitions. Word has length 144 [2024-11-09 06:18:34,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:18:34,597 INFO L471 AbstractCegarLoop]: Abstraction has 13841 states and 21231 transitions. [2024-11-09 06:18:34,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 2 states have internal predecessors, (117), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-09 06:18:34,598 INFO L276 IsEmpty]: Start isEmpty. Operand 13841 states and 21231 transitions. [2024-11-09 06:18:34,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-09 06:18:34,621 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:18:34,621 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:18:34,644 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64222afe-6178-4401-8ee6-c2d986750921/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 06:18:34,826 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64222afe-6178-4401-8ee6-c2d986750921/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:18:34,826 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:18:34,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:18:34,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1726601815, now seen corresponding path program 1 times [2024-11-09 06:18:34,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:18:34,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971281291] [2024-11-09 06:18:34,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:18:34,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:18:34,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:18:35,027 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-09 06:18:35,027 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:18:35,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971281291] [2024-11-09 06:18:35,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971281291] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:18:35,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [631856181] [2024-11-09 06:18:35,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:18:35,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:18:35,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64222afe-6178-4401-8ee6-c2d986750921/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:18:35,030 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64222afe-6178-4401-8ee6-c2d986750921/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:18:35,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64222afe-6178-4401-8ee6-c2d986750921/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 06:18:35,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:18:35,297 INFO L255 TraceCheckSpWp]: Trace formula consists of 958 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 06:18:35,301 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:18:35,383 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-09 06:18:35,383 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:18:35,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [631856181] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:18:35,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:18:35,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-09 06:18:35,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919543002] [2024-11-09 06:18:35,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:18:35,385 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 06:18:35,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:18:35,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 06:18:35,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:18:35,386 INFO L87 Difference]: Start difference. First operand 13841 states and 21231 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-09 06:18:36,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:18:36,589 INFO L93 Difference]: Finished difference Result 38038 states and 57684 transitions. [2024-11-09 06:18:36,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 06:18:36,590 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 144 [2024-11-09 06:18:36,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:18:36,705 INFO L225 Difference]: With dead ends: 38038 [2024-11-09 06:18:36,706 INFO L226 Difference]: Without dead ends: 25843 [2024-11-09 06:18:36,746 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:18:36,747 INFO L432 NwaCegarLoop]: 3318 mSDtfsCounter, 3533 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3533 SdHoareTripleChecker+Valid, 3572 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 06:18:36,748 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3533 Valid, 3572 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 06:18:36,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25843 states. [2024-11-09 06:18:37,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25843 to 25777. [2024-11-09 06:18:37,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25777 states, 22443 states have (on average 1.494586285255982) internal successors, (33543), 22509 states have internal predecessors, (33543), 2564 states have call successors, (2564), 768 states have call predecessors, (2564), 768 states have return successors, (2564), 2500 states have call predecessors, (2564), 2564 states have call successors, (2564) [2024-11-09 06:18:37,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25777 states to 25777 states and 38671 transitions. [2024-11-09 06:18:37,813 INFO L78 Accepts]: Start accepts. Automaton has 25777 states and 38671 transitions. Word has length 144 [2024-11-09 06:18:37,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:18:37,814 INFO L471 AbstractCegarLoop]: Abstraction has 25777 states and 38671 transitions. [2024-11-09 06:18:37,814 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-09 06:18:37,814 INFO L276 IsEmpty]: Start isEmpty. Operand 25777 states and 38671 transitions. [2024-11-09 06:18:37,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-09 06:18:37,856 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:18:37,856 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:18:37,879 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64222afe-6178-4401-8ee6-c2d986750921/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-09 06:18:38,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64222afe-6178-4401-8ee6-c2d986750921/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:18:38,058 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:18:38,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:18:38,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1123536149, now seen corresponding path program 1 times [2024-11-09 06:18:38,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:18:38,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943337818] [2024-11-09 06:18:38,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:18:38,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:18:38,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:18:38,254 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-09 06:18:38,254 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:18:38,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943337818] [2024-11-09 06:18:38,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943337818] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:18:38,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1913826490] [2024-11-09 06:18:38,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:18:38,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:18:38,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64222afe-6178-4401-8ee6-c2d986750921/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:18:38,257 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64222afe-6178-4401-8ee6-c2d986750921/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:18:38,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64222afe-6178-4401-8ee6-c2d986750921/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 06:18:38,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:18:38,521 INFO L255 TraceCheckSpWp]: Trace formula consists of 952 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 06:18:38,524 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:18:38,581 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-09 06:18:38,581 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:18:38,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1913826490] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:18:38,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:18:38,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-09 06:18:38,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703932411] [2024-11-09 06:18:38,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:18:38,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 06:18:38,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:18:38,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 06:18:38,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:18:38,585 INFO L87 Difference]: Start difference. First operand 25777 states and 38671 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-09 06:18:40,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:18:40,542 INFO L93 Difference]: Finished difference Result 73654 states and 110484 transitions. [2024-11-09 06:18:40,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 06:18:40,542 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 144 [2024-11-09 06:18:40,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:18:40,832 INFO L225 Difference]: With dead ends: 73654 [2024-11-09 06:18:40,833 INFO L226 Difference]: Without dead ends: 49523 [2024-11-09 06:18:40,941 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:18:40,942 INFO L432 NwaCegarLoop]: 3318 mSDtfsCounter, 3545 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3545 SdHoareTripleChecker+Valid, 3572 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 06:18:40,942 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3545 Valid, 3572 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 06:18:41,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49523 states. [2024-11-09 06:18:43,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49523 to 49393. [2024-11-09 06:18:43,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49393 states, 42859 states have (on average 1.4710329219067173) internal successors, (63047), 42989 states have internal predecessors, (63047), 4996 states have call successors, (4996), 1536 states have call predecessors, (4996), 1536 states have return successors, (4996), 4868 states have call predecessors, (4996), 4996 states have call successors, (4996) [2024-11-09 06:18:43,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49393 states to 49393 states and 73039 transitions. [2024-11-09 06:18:43,350 INFO L78 Accepts]: Start accepts. Automaton has 49393 states and 73039 transitions. Word has length 144 [2024-11-09 06:18:43,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:18:43,351 INFO L471 AbstractCegarLoop]: Abstraction has 49393 states and 73039 transitions. [2024-11-09 06:18:43,351 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-09 06:18:43,351 INFO L276 IsEmpty]: Start isEmpty. Operand 49393 states and 73039 transitions. [2024-11-09 06:18:43,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-09 06:18:43,432 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:18:43,432 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:18:43,455 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64222afe-6178-4401-8ee6-c2d986750921/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-09 06:18:43,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64222afe-6178-4401-8ee6-c2d986750921/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:18:43,638 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:18:43,639 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:18:43,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1424593619, now seen corresponding path program 1 times [2024-11-09 06:18:43,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:18:43,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315535897] [2024-11-09 06:18:43,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:18:43,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:18:43,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:18:44,187 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-09 06:18:44,188 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:18:44,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315535897] [2024-11-09 06:18:44,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315535897] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:18:44,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:18:44,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 06:18:44,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505828261] [2024-11-09 06:18:44,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:18:44,191 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 06:18:44,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:18:44,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 06:18:44,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:18:44,193 INFO L87 Difference]: Start difference. First operand 49393 states and 73039 transitions. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-09 06:18:48,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:18:48,896 INFO L93 Difference]: Finished difference Result 156021 states and 229969 transitions. [2024-11-09 06:18:48,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 06:18:48,897 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 144 [2024-11-09 06:18:48,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:18:49,415 INFO L225 Difference]: With dead ends: 156021 [2024-11-09 06:18:49,415 INFO L226 Difference]: Without dead ends: 108275 [2024-11-09 06:18:49,541 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-11-09 06:18:49,543 INFO L432 NwaCegarLoop]: 3334 mSDtfsCounter, 4202 mSDsluCounter, 9838 mSDsCounter, 0 mSdLazyCounter, 1233 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4224 SdHoareTripleChecker+Valid, 13172 SdHoareTripleChecker+Invalid, 1357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 1233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-09 06:18:49,543 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4224 Valid, 13172 Invalid, 1357 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [124 Valid, 1233 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-09 06:18:49,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108275 states. [2024-11-09 06:18:54,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108275 to 95601. [2024-11-09 06:18:54,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95601 states, 82795 states have (on average 1.4556313787064437) internal successors, (120519), 83053 states have internal predecessors, (120519), 9732 states have call successors, (9732), 3072 states have call predecessors, (9732), 3072 states have return successors, (9732), 9476 states have call predecessors, (9732), 9732 states have call successors, (9732) [2024-11-09 06:18:54,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95601 states to 95601 states and 139983 transitions. [2024-11-09 06:18:54,687 INFO L78 Accepts]: Start accepts. Automaton has 95601 states and 139983 transitions. Word has length 144 [2024-11-09 06:18:54,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:18:54,689 INFO L471 AbstractCegarLoop]: Abstraction has 95601 states and 139983 transitions. [2024-11-09 06:18:54,690 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-09 06:18:54,690 INFO L276 IsEmpty]: Start isEmpty. Operand 95601 states and 139983 transitions. [2024-11-09 06:18:54,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-09 06:18:54,855 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:18:54,855 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:18:54,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 06:18:54,858 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:18:54,858 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:18:54,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1651531681, now seen corresponding path program 1 times [2024-11-09 06:18:54,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:18:54,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428597204] [2024-11-09 06:18:54,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:18:54,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:18:54,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:18:55,553 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 10 proven. 44 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-09 06:18:55,554 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:18:55,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428597204] [2024-11-09 06:18:55,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428597204] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:18:55,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1042356697] [2024-11-09 06:18:55,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:18:55,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:18:55,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64222afe-6178-4401-8ee6-c2d986750921/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:18:55,556 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64222afe-6178-4401-8ee6-c2d986750921/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:18:55,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64222afe-6178-4401-8ee6-c2d986750921/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 06:18:55,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:18:55,811 INFO L255 TraceCheckSpWp]: Trace formula consists of 985 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 06:18:55,815 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:18:55,861 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-09 06:18:55,862 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:18:55,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1042356697] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:18:55,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:18:55,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-09 06:18:55,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719260002] [2024-11-09 06:18:55,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:18:55,863 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 06:18:55,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:18:55,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 06:18:55,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-09 06:18:55,864 INFO L87 Difference]: Start difference. First operand 95601 states and 139983 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-09 06:19:00,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:19:00,806 INFO L93 Difference]: Finished difference Result 169971 states and 251472 transitions. [2024-11-09 06:19:00,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 06:19:00,807 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 168 [2024-11-09 06:19:00,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:19:01,546 INFO L225 Difference]: With dead ends: 169971 [2024-11-09 06:19:01,547 INFO L226 Difference]: Without dead ends: 122353 [2024-11-09 06:19:01,715 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-09 06:19:01,716 INFO L432 NwaCegarLoop]: 3472 mSDtfsCounter, 147 mSDsluCounter, 3332 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 6804 SdHoareTripleChecker+Invalid, 560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 06:19:01,717 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 6804 Invalid, 560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 06:19:01,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122353 states. [2024-11-09 06:19:06,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122353 to 116209. [2024-11-09 06:19:06,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116209 states, 102891 states have (on average 1.4848237455171007) internal successors, (152775), 103149 states have internal predecessors, (152775), 9988 states have call successors, (9988), 3328 states have call predecessors, (9988), 3328 states have return successors, (9988), 9732 states have call predecessors, (9988), 9988 states have call successors, (9988) [2024-11-09 06:19:06,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116209 states to 116209 states and 172751 transitions. [2024-11-09 06:19:06,853 INFO L78 Accepts]: Start accepts. Automaton has 116209 states and 172751 transitions. Word has length 168 [2024-11-09 06:19:06,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:19:06,854 INFO L471 AbstractCegarLoop]: Abstraction has 116209 states and 172751 transitions. [2024-11-09 06:19:06,854 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-09 06:19:06,854 INFO L276 IsEmpty]: Start isEmpty. Operand 116209 states and 172751 transitions. [2024-11-09 06:19:07,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2024-11-09 06:19:07,117 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:19:07,117 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:19:07,139 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64222afe-6178-4401-8ee6-c2d986750921/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-09 06:19:07,317 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64222afe-6178-4401-8ee6-c2d986750921/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:19:07,318 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:19:07,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:19:07,318 INFO L85 PathProgramCache]: Analyzing trace with hash 721398842, now seen corresponding path program 1 times [2024-11-09 06:19:07,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:19:07,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934098739] [2024-11-09 06:19:07,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:19:07,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:19:07,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:19:08,096 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 10 proven. 87 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-09 06:19:08,096 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:19:08,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934098739] [2024-11-09 06:19:08,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934098739] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:19:08,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [580954462] [2024-11-09 06:19:08,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:19:08,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:19:08,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64222afe-6178-4401-8ee6-c2d986750921/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:19:08,099 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64222afe-6178-4401-8ee6-c2d986750921/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:19:08,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64222afe-6178-4401-8ee6-c2d986750921/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 06:19:08,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:19:08,439 INFO L255 TraceCheckSpWp]: Trace formula consists of 1210 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 06:19:08,443 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:19:08,681 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-09 06:19:08,681 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:19:08,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [580954462] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:19:08,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:19:08,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2024-11-09 06:19:08,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705988764] [2024-11-09 06:19:08,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:19:08,682 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 06:19:08,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:19:08,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 06:19:08,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-09 06:19:08,684 INFO L87 Difference]: Start difference. First operand 116209 states and 172751 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10)