./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/rekh_nxt.2.M4-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94df900a-825e-4066-888f-5fbd1d108f71/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94df900a-825e-4066-888f-5fbd1d108f71/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94df900a-825e-4066-888f-5fbd1d108f71/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94df900a-825e-4066-888f-5fbd1d108f71/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/rekh_nxt.2.M4-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94df900a-825e-4066-888f-5fbd1d108f71/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94df900a-825e-4066-888f-5fbd1d108f71/bin/utaipan-verify-sOmjnqqW8E --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 c3428ae6a0cff233befb72334b90ad9e2070ed1c51acfcfa2fe6d4fef2ceb1ff --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 04:04:37,803 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 04:04:37,883 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94df900a-825e-4066-888f-5fbd1d108f71/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-14 04:04:37,889 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 04:04:37,889 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 04:04:37,927 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 04:04:37,929 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 04:04:37,930 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 04:04:37,930 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 04:04:37,931 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 04:04:37,931 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 04:04:37,932 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 04:04:37,932 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 04:04:37,932 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 04:04:37,932 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 04:04:37,932 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 04:04:37,932 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 04:04:37,933 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 04:04:37,933 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 04:04:37,934 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 04:04:37,934 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 04:04:37,934 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 04:04:37,934 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 04:04:37,934 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 04:04:37,935 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 04:04:37,935 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 04:04:37,935 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 04:04:37,936 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 04:04:37,936 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 04:04:37,936 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 04:04:37,936 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 04:04:37,936 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 04:04:37,936 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 04:04:37,936 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 04:04:37,936 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 04:04:37,937 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 04:04:37,938 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 04:04:37,938 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 04:04:37,938 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 04:04:37,938 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 04:04:37,938 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 04:04:37,938 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 04:04:37,939 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 04:04:37,939 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 04:04:37,939 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 04:04:37,939 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 04:04:37,939 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 04:04:37,940 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_94df900a-825e-4066-888f-5fbd1d108f71/bin/utaipan-verify-sOmjnqqW8E 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 -> c3428ae6a0cff233befb72334b90ad9e2070ed1c51acfcfa2fe6d4fef2ceb1ff [2024-11-14 04:04:38,266 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 04:04:38,277 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 04:04:38,281 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 04:04:38,284 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 04:04:38,285 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 04:04:38,287 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94df900a-825e-4066-888f-5fbd1d108f71/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/seq-mthreaded/rekh_nxt.2.M4-1.c Unable to find full path for "g++" [2024-11-14 04:04:40,379 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 04:04:40,861 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 04:04:40,865 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94df900a-825e-4066-888f-5fbd1d108f71/sv-benchmarks/c/seq-mthreaded/rekh_nxt.2.M4-1.c [2024-11-14 04:04:40,901 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94df900a-825e-4066-888f-5fbd1d108f71/bin/utaipan-verify-sOmjnqqW8E/data/9edbca2fa/afb9fa46f2d047388994d9f8e51dc8f0/FLAGd0d7c209f [2024-11-14 04:04:40,926 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94df900a-825e-4066-888f-5fbd1d108f71/bin/utaipan-verify-sOmjnqqW8E/data/9edbca2fa/afb9fa46f2d047388994d9f8e51dc8f0 [2024-11-14 04:04:40,929 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 04:04:40,930 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 04:04:40,934 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 04:04:40,934 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 04:04:40,939 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 04:04:40,940 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:04:40" (1/1) ... [2024-11-14 04:04:40,941 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4485fcce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:04:40, skipping insertion in model container [2024-11-14 04:04:40,943 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:04:40" (1/1) ... [2024-11-14 04:04:41,022 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 04:04:41,270 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_94df900a-825e-4066-888f-5fbd1d108f71/sv-benchmarks/c/seq-mthreaded/rekh_nxt.2.M4-1.c[1682,1695] [2024-11-14 04:04:41,771 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 04:04:41,799 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 04:04:41,810 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"/tmp/aaaa/nxt.ok2.i","-S") [42] [2024-11-14 04:04:41,817 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_94df900a-825e-4066-888f-5fbd1d108f71/sv-benchmarks/c/seq-mthreaded/rekh_nxt.2.M4-1.c[1682,1695] [2024-11-14 04:04:42,098 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 04:04:42,138 INFO L204 MainTranslator]: Completed translation [2024-11-14 04:04:42,139 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:04:42 WrapperNode [2024-11-14 04:04:42,140 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 04:04:42,141 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 04:04:42,142 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 04:04:42,142 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 04:04:42,151 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:04:42" (1/1) ... [2024-11-14 04:04:42,238 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:04:42" (1/1) ... [2024-11-14 04:04:42,529 INFO L138 Inliner]: procedures = 56, calls = 2288, calls flagged for inlining = 21, calls inlined = 21, statements flattened = 4971 [2024-11-14 04:04:42,530 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 04:04:42,531 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 04:04:42,531 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 04:04:42,531 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 04:04:42,539 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:04:42" (1/1) ... [2024-11-14 04:04:42,539 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:04:42" (1/1) ... [2024-11-14 04:04:42,587 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:04:42" (1/1) ... [2024-11-14 04:04:42,587 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:04:42" (1/1) ... [2024-11-14 04:04:42,754 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:04:42" (1/1) ... [2024-11-14 04:04:42,780 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:04:42" (1/1) ... [2024-11-14 04:04:42,808 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:04:42" (1/1) ... [2024-11-14 04:04:42,826 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:04:42" (1/1) ... [2024-11-14 04:04:42,870 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 04:04:42,871 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 04:04:42,871 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 04:04:42,871 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 04:04:42,872 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:04:42" (1/1) ... [2024-11-14 04:04:42,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 04:04:42,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94df900a-825e-4066-888f-5fbd1d108f71/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:04:42,917 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94df900a-825e-4066-888f-5fbd1d108f71/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 04:04:42,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94df900a-825e-4066-888f-5fbd1d108f71/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 04:04:42,951 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 04:04:42,951 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2024-11-14 04:04:42,952 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2024-11-14 04:04:42,952 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2024-11-14 04:04:42,952 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2024-11-14 04:04:42,952 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-14 04:04:42,953 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2024-11-14 04:04:42,953 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2024-11-14 04:04:42,953 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2024-11-14 04:04:42,953 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2024-11-14 04:04:42,953 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2024-11-14 04:04:42,953 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2024-11-14 04:04:42,953 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-14 04:04:42,954 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2024-11-14 04:04:42,954 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2024-11-14 04:04:42,954 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2024-11-14 04:04:42,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2024-11-14 04:04:42,955 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2024-11-14 04:04:42,955 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2024-11-14 04:04:42,955 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2024-11-14 04:04:42,955 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2024-11-14 04:04:42,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-14 04:04:42,956 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_hyperperiod [2024-11-14 04:04:42,956 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_hyperperiod [2024-11-14 04:04:42,956 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2024-11-14 04:04:42,956 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2024-11-14 04:04:42,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-14 04:04:42,957 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2024-11-14 04:04:42,957 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2024-11-14 04:04:42,957 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2024-11-14 04:04:42,958 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2024-11-14 04:04:42,958 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-14 04:04:42,958 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-14 04:04:42,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 04:04:42,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 04:04:42,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 04:04:42,961 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2024-11-14 04:04:42,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2024-11-14 04:04:42,961 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2024-11-14 04:04:42,961 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2024-11-14 04:04:42,961 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2024-11-14 04:04:42,961 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2024-11-14 04:04:43,542 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 04:04:43,544 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 04:04:55,478 INFO L? ?]: Removed 353 outVars from TransFormulas that were not future-live. [2024-11-14 04:04:55,478 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 04:04:55,797 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 04:04:55,799 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-14 04:04:55,800 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:04:55 BoogieIcfgContainer [2024-11-14 04:04:55,800 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 04:04:55,803 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 04:04:55,803 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 04:04:55,810 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 04:04:55,811 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 04:04:40" (1/3) ... [2024-11-14 04:04:55,811 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@170746ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:04:55, skipping insertion in model container [2024-11-14 04:04:55,812 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:04:42" (2/3) ... [2024-11-14 04:04:55,812 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@170746ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:04:55, skipping insertion in model container [2024-11-14 04:04:55,812 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:04:55" (3/3) ... [2024-11-14 04:04:55,814 INFO L112 eAbstractionObserver]: Analyzing ICFG rekh_nxt.2.M4-1.c [2024-11-14 04:04:55,831 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 04:04:55,834 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG rekh_nxt.2.M4-1.c that has 18 procedures, 1494 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-14 04:04:55,980 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 04:04:55,998 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;@57770d61, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 04:04:56,000 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-14 04:04:56,012 INFO L276 IsEmpty]: Start isEmpty. Operand has 1494 states, 835 states have (on average 1.2622754491017965) internal successors, (1054), 964 states have internal predecessors, (1054), 640 states have call successors, (640), 17 states have call predecessors, (640), 17 states have return successors, (640), 541 states have call predecessors, (640), 640 states have call successors, (640) [2024-11-14 04:04:56,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 885 [2024-11-14 04:04:56,093 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:04:56,094 INFO L215 NwaCegarLoop]: trace histogram [209, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:04:56,096 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:04:56,100 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:04:56,102 INFO L85 PathProgramCache]: Analyzing trace with hash 426063280, now seen corresponding path program 1 times [2024-11-14 04:04:56,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:04:56,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178163704] [2024-11-14 04:04:56,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:04:56,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:05:43,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:06:12,208 INFO L134 CoverageAnalysis]: Checked inductivity of 43472 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43472 trivial. 0 not checked. [2024-11-14 04:06:12,210 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:06:12,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178163704] [2024-11-14 04:06:12,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178163704] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:06:12,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:06:12,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 04:06:12,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411320740] [2024-11-14 04:06:12,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:06:12,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:06:12,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:06:12,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:06:12,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:06:12,270 INFO L87 Difference]: Start difference. First operand has 1494 states, 835 states have (on average 1.2622754491017965) internal successors, (1054), 964 states have internal predecessors, (1054), 640 states have call successors, (640), 17 states have call predecessors, (640), 17 states have return successors, (640), 541 states have call predecessors, (640), 640 states have call successors, (640) Second operand has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 2 states have call successors, (213), 2 states have call predecessors, (213), 2 states have return successors, (211), 2 states have call predecessors, (211), 2 states have call successors, (211) [2024-11-14 04:06:14,494 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 04:06:16,534 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 04:06:16,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:06:16,995 INFO L93 Difference]: Finished difference Result 2986 states and 4720 transitions. [2024-11-14 04:06:16,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:06:16,999 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 2 states have call successors, (213), 2 states have call predecessors, (213), 2 states have return successors, (211), 2 states have call predecessors, (211), 2 states have call successors, (211) Word has length 884 [2024-11-14 04:06:17,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:06:17,049 INFO L225 Difference]: With dead ends: 2986 [2024-11-14 04:06:17,050 INFO L226 Difference]: Without dead ends: 1492 [2024-11-14 04:06:17,070 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:06:17,073 INFO L432 NwaCegarLoop]: 2308 mSDtfsCounter, 0 mSDsluCounter, 2301 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4609 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-11-14 04:06:17,074 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4609 Invalid, 54 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 2 Unknown, 0 Unchecked, 4.3s Time] [2024-11-14 04:06:17,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1492 states. [2024-11-14 04:06:17,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1492 to 1492. [2024-11-14 04:06:17,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1492 states, 834 states have (on average 1.2601918465227817) internal successors, (1051), 963 states have internal predecessors, (1051), 640 states have call successors, (640), 17 states have call predecessors, (640), 17 states have return successors, (639), 540 states have call predecessors, (639), 639 states have call successors, (639) [2024-11-14 04:06:17,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1492 states to 1492 states and 2330 transitions. [2024-11-14 04:06:17,582 INFO L78 Accepts]: Start accepts. Automaton has 1492 states and 2330 transitions. Word has length 884 [2024-11-14 04:06:17,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:06:17,587 INFO L471 AbstractCegarLoop]: Abstraction has 1492 states and 2330 transitions. [2024-11-14 04:06:17,587 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 2 states have call successors, (213), 2 states have call predecessors, (213), 2 states have return successors, (211), 2 states have call predecessors, (211), 2 states have call successors, (211) [2024-11-14 04:06:17,588 INFO L276 IsEmpty]: Start isEmpty. Operand 1492 states and 2330 transitions. [2024-11-14 04:06:17,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 891 [2024-11-14 04:06:17,621 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:06:17,622 INFO L215 NwaCegarLoop]: trace histogram [209, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:06:17,622 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 04:06:17,622 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:06:17,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:06:17,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1564788139, now seen corresponding path program 1 times [2024-11-14 04:06:17,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:06:17,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819881829] [2024-11-14 04:06:17,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:06:17,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:07:05,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:10:36,835 INFO L134 CoverageAnalysis]: Checked inductivity of 43474 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43474 trivial. 0 not checked. [2024-11-14 04:10:36,840 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:10:36,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819881829] [2024-11-14 04:10:36,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819881829] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:10:36,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:10:36,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 04:10:36,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759029397] [2024-11-14 04:10:36,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:10:36,844 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 04:10:36,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:10:36,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 04:10:36,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-14 04:10:36,851 INFO L87 Difference]: Start difference. First operand 1492 states and 2330 transitions. Second operand has 5 states, 4 states have (on average 63.25) internal successors, (253), 5 states have internal predecessors, (253), 4 states have call successors, (215), 2 states have call predecessors, (215), 2 states have return successors, (213), 3 states have call predecessors, (213), 4 states have call successors, (213) [2024-11-14 04:10:41,239 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 04:10:43,264 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 04:10:45,292 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 04:10:54,639 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 04:10:56,666 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 04:10:58,677 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 04:10:58,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:10:58,740 INFO L93 Difference]: Finished difference Result 3687 states and 5740 transitions. [2024-11-14 04:10:58,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 04:10:58,741 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 63.25) internal successors, (253), 5 states have internal predecessors, (253), 4 states have call successors, (215), 2 states have call predecessors, (215), 2 states have return successors, (213), 3 states have call predecessors, (213), 4 states have call successors, (213) Word has length 890 [2024-11-14 04:10:58,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:10:58,772 INFO L225 Difference]: With dead ends: 3687 [2024-11-14 04:10:58,772 INFO L226 Difference]: Without dead ends: 2197 [2024-11-14 04:10:58,798 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-14 04:10:58,799 INFO L432 NwaCegarLoop]: 3342 mSDtfsCounter, 4031 mSDsluCounter, 1477 mSDsCounter, 0 mSdLazyCounter, 1945 mSolverCounterSat, 829 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4031 SdHoareTripleChecker+Valid, 4819 SdHoareTripleChecker+Invalid, 2780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 829 IncrementalHoareTripleChecker+Valid, 1945 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.3s IncrementalHoareTripleChecker+Time [2024-11-14 04:10:58,800 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4031 Valid, 4819 Invalid, 2780 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [829 Valid, 1945 Invalid, 6 Unknown, 0 Unchecked, 21.3s Time] [2024-11-14 04:10:58,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2197 states. [2024-11-14 04:10:59,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2197 to 2196. [2024-11-14 04:10:59,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2196 states, 1254 states have (on average 1.2328548644338118) internal successors, (1546), 1383 states have internal predecessors, (1546), 919 states have call successors, (919), 23 states have call predecessors, (919), 22 states have return successors, (918), 818 states have call predecessors, (918), 918 states have call successors, (918) [2024-11-14 04:10:59,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2196 states to 2196 states and 3383 transitions. [2024-11-14 04:10:59,485 INFO L78 Accepts]: Start accepts. Automaton has 2196 states and 3383 transitions. Word has length 890 [2024-11-14 04:10:59,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:10:59,491 INFO L471 AbstractCegarLoop]: Abstraction has 2196 states and 3383 transitions. [2024-11-14 04:10:59,492 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 63.25) internal successors, (253), 5 states have internal predecessors, (253), 4 states have call successors, (215), 2 states have call predecessors, (215), 2 states have return successors, (213), 3 states have call predecessors, (213), 4 states have call successors, (213) [2024-11-14 04:10:59,492 INFO L276 IsEmpty]: Start isEmpty. Operand 2196 states and 3383 transitions. [2024-11-14 04:10:59,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 895 [2024-11-14 04:10:59,536 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:10:59,537 INFO L215 NwaCegarLoop]: trace histogram [209, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:10:59,538 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-14 04:10:59,538 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:10:59,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:10:59,542 INFO L85 PathProgramCache]: Analyzing trace with hash 247723275, now seen corresponding path program 1 times [2024-11-14 04:10:59,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:10:59,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764084342] [2024-11-14 04:10:59,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:10:59,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:13:04,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:18:57,477 INFO L134 CoverageAnalysis]: Checked inductivity of 43474 backedges. 142 proven. 66 refuted. 0 times theorem prover too weak. 43266 trivial. 0 not checked. [2024-11-14 04:18:57,477 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:18:57,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764084342] [2024-11-14 04:18:57,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764084342] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:18:57,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573061348] [2024-11-14 04:18:57,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:18:57,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:18:57,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94df900a-825e-4066-888f-5fbd1d108f71/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:18:57,482 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94df900a-825e-4066-888f-5fbd1d108f71/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:18:57,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94df900a-825e-4066-888f-5fbd1d108f71/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process