./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M1-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 798a7b37 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M1-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f077881e7f4fa96e31e8798f1b4a7ec1ee00f86778c2b79845cdeaf2537e700e --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-03 14:56:41,783 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-03 14:56:41,842 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-03 14:56:41,846 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-03 14:56:41,847 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-03 14:56:41,865 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-03 14:56:41,866 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-03 14:56:41,866 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-03 14:56:41,866 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-03 14:56:41,867 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-03 14:56:41,867 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-03 14:56:41,867 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-03 14:56:41,867 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-03 14:56:41,867 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-03 14:56:41,867 INFO L153 SettingsManager]: * Use SBE=true [2025-03-03 14:56:41,867 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-03 14:56:41,867 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-03 14:56:41,867 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-03 14:56:41,868 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-03 14:56:41,868 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-03 14:56:41,868 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-03 14:56:41,868 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-03 14:56:41,868 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-03 14:56:41,868 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-03 14:56:41,868 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-03 14:56:41,868 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-03 14:56:41,868 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-03 14:56:41,868 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-03 14:56:41,868 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-03 14:56:41,869 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-03 14:56:41,869 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-03 14:56:41,869 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-03 14:56:41,869 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 14:56:41,869 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-03 14:56:41,869 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-03 14:56:41,869 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-03 14:56:41,869 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-03 14:56:41,869 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-03 14:56:41,869 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-03 14:56:41,870 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-03 14:56:41,870 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-03 14:56:41,870 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-03 14:56:41,870 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-03 14:56:41,870 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f077881e7f4fa96e31e8798f1b4a7ec1ee00f86778c2b79845cdeaf2537e700e [2025-03-03 14:56:42,103 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-03 14:56:42,111 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-03 14:56:42,113 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-03 14:56:42,113 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-03 14:56:42,113 INFO L274 PluginConnector]: CDTParser initialized [2025-03-03 14:56:42,114 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M1-1.c [2025-03-03 14:56:43,259 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52a90a659/d37799624d194877a185405b29cb46ad/FLAGdd71ffbae [2025-03-03 14:56:43,558 INFO L384 CDTParser]: Found 1 translation units. [2025-03-03 14:56:43,559 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M1-1.c [2025-03-03 14:56:43,574 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52a90a659/d37799624d194877a185405b29cb46ad/FLAGdd71ffbae [2025-03-03 14:56:43,820 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52a90a659/d37799624d194877a185405b29cb46ad [2025-03-03 14:56:43,822 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-03 14:56:43,823 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-03 14:56:43,824 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-03 14:56:43,824 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-03 14:56:43,827 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-03 14:56:43,827 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 02:56:43" (1/1) ... [2025-03-03 14:56:43,828 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38e614eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:56:43, skipping insertion in model container [2025-03-03 14:56:43,828 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 02:56:43" (1/1) ... [2025-03-03 14:56:43,862 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-03 14:56:43,962 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M1-1.c[1674,1687] [2025-03-03 14:56:44,168 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 14:56:44,182 INFO L200 MainTranslator]: Completed pre-run [2025-03-03 14:56:44,189 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"/tmp/aaaa/nxt.bug1.i","-S") [42] [2025-03-03 14:56:44,194 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M1-1.c[1674,1687] [2025-03-03 14:56:44,334 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 14:56:44,352 INFO L204 MainTranslator]: Completed translation [2025-03-03 14:56:44,353 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:56:44 WrapperNode [2025-03-03 14:56:44,353 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-03 14:56:44,354 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-03 14:56:44,354 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-03 14:56:44,354 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-03 14:56:44,359 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:56:44" (1/1) ... [2025-03-03 14:56:44,404 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:56:44" (1/1) ... [2025-03-03 14:56:44,546 INFO L138 Inliner]: procedures = 57, calls = 1828, calls flagged for inlining = 24, calls inlined = 24, statements flattened = 3990 [2025-03-03 14:56:44,547 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-03 14:56:44,548 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-03 14:56:44,548 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-03 14:56:44,548 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-03 14:56:44,554 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:56:44" (1/1) ... [2025-03-03 14:56:44,554 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:56:44" (1/1) ... [2025-03-03 14:56:44,588 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:56:44" (1/1) ... [2025-03-03 14:56:44,651 INFO L175 MemorySlicer]: Split 1382 memory accesses to 17 slices as follows [8, 2, 264, 305, 156, 113, 79, 57, 83, 105, 82, 105, 7, 4, 8, 2, 2]. 22 percent of accesses are in the largest equivalence class. The 166 initializations are split as follows [0, 2, 24, 24, 2, 2, 1, 1, 27, 27, 27, 27, 2, 0, 0, 0, 0]. The 175 writes are split as follows [4, 0, 24, 24, 2, 2, 1, 1, 28, 26, 28, 26, 3, 0, 4, 1, 1]. [2025-03-03 14:56:44,651 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:56:44" (1/1) ... [2025-03-03 14:56:44,652 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:56:44" (1/1) ... [2025-03-03 14:56:44,728 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:56:44" (1/1) ... [2025-03-03 14:56:44,740 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:56:44" (1/1) ... [2025-03-03 14:56:44,759 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:56:44" (1/1) ... [2025-03-03 14:56:44,771 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:56:44" (1/1) ... [2025-03-03 14:56:44,798 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-03 14:56:44,799 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-03 14:56:44,799 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-03 14:56:44,800 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-03 14:56:44,800 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:56:44" (1/1) ... [2025-03-03 14:56:44,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 14:56:44,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:56:44,827 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-03 14:56:44,830 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-03 14:56:44,884 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-03 14:56:44,884 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2025-03-03 14:56:44,884 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2025-03-03 14:56:44,885 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2025-03-03 14:56:44,885 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2025-03-03 14:56:44,885 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-03 14:56:44,885 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2025-03-03 14:56:44,885 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2025-03-03 14:56:44,885 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2025-03-03 14:56:44,885 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2025-03-03 14:56:44,886 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2025-03-03 14:56:44,886 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2025-03-03 14:56:44,886 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-03 14:56:44,886 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-03 14:56:44,886 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-03 14:56:44,886 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-03 14:56:44,886 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-03-03 14:56:44,886 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2025-03-03 14:56:44,886 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2025-03-03 14:56:44,886 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2025-03-03 14:56:44,887 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2025-03-03 14:56:44,887 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2025-03-03 14:56:44,887 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2025-03-03 14:56:44,887 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2025-03-03 14:56:44,887 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2025-03-03 14:56:44,887 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#13 [2025-03-03 14:56:44,887 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#14 [2025-03-03 14:56:44,888 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#15 [2025-03-03 14:56:44,888 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#16 [2025-03-03 14:56:44,888 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2025-03-03 14:56:44,888 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2025-03-03 14:56:44,889 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2025-03-03 14:56:44,889 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2025-03-03 14:56:44,889 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2025-03-03 14:56:44,889 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2025-03-03 14:56:44,889 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2025-03-03 14:56:44,889 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2025-03-03 14:56:44,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-03 14:56:44,889 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2025-03-03 14:56:44,889 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2025-03-03 14:56:44,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-03 14:56:44,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-03 14:56:44,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-03 14:56:44,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-03 14:56:44,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-03-03 14:56:44,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2025-03-03 14:56:44,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2025-03-03 14:56:44,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2025-03-03 14:56:44,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2025-03-03 14:56:44,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2025-03-03 14:56:44,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2025-03-03 14:56:44,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2025-03-03 14:56:44,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2025-03-03 14:56:44,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#13 [2025-03-03 14:56:44,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#14 [2025-03-03 14:56:44,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#15 [2025-03-03 14:56:44,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#16 [2025-03-03 14:56:44,889 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2025-03-03 14:56:44,889 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2025-03-03 14:56:44,889 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-03 14:56:44,889 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-03 14:56:44,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-03 14:56:44,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-03 14:56:44,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-03 14:56:44,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-03 14:56:44,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-03 14:56:44,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-03-03 14:56:44,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-03-03 14:56:44,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2025-03-03 14:56:44,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2025-03-03 14:56:44,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2025-03-03 14:56:44,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2025-03-03 14:56:44,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2025-03-03 14:56:44,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2025-03-03 14:56:44,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2025-03-03 14:56:44,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2025-03-03 14:56:44,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2025-03-03 14:56:44,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2025-03-03 14:56:44,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-03 14:56:44,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-03 14:56:44,890 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2025-03-03 14:56:44,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2025-03-03 14:56:44,890 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2025-03-03 14:56:44,890 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2025-03-03 14:56:44,890 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2025-03-03 14:56:44,890 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2025-03-03 14:56:45,214 INFO L256 CfgBuilder]: Building ICFG [2025-03-03 14:56:45,216 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-03 14:56:45,544 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L209: call ULTIMATE.dealloc(OSEK_Task_ts1_~#pwm_l~0#1.base, OSEK_Task_ts1_~#pwm_l~0#1.offset);havoc OSEK_Task_ts1_~#pwm_l~0#1.base, OSEK_Task_ts1_~#pwm_l~0#1.offset;call ULTIMATE.dealloc(OSEK_Task_ts1_~#pwm_r~0#1.base, OSEK_Task_ts1_~#pwm_r~0#1.offset);havoc OSEK_Task_ts1_~#pwm_r~0#1.base, OSEK_Task_ts1_~#pwm_r~0#1.offset; [2025-03-03 14:56:45,544 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L82: call ULTIMATE.dealloc(balance_control_~#tmp~0#1.base, balance_control_~#tmp~0#1.offset);havoc balance_control_~#tmp~0#1.base, balance_control_~#tmp~0#1.offset;call ULTIMATE.dealloc(balance_control_~#tmp_theta_0~0#1.base, balance_control_~#tmp_theta_0~0#1.offset);havoc balance_control_~#tmp_theta_0~0#1.base, balance_control_~#tmp_theta_0~0#1.offset; [2025-03-03 14:56:49,365 INFO L? ?]: Removed 191 outVars from TransFormulas that were not future-live. [2025-03-03 14:56:49,365 INFO L307 CfgBuilder]: Performing block encoding [2025-03-03 14:56:49,399 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-03 14:56:49,400 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-03 14:56:49,402 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 02:56:49 BoogieIcfgContainer [2025-03-03 14:56:49,402 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-03 14:56:49,403 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-03 14:56:49,404 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-03 14:56:49,408 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-03 14:56:49,408 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.03 02:56:43" (1/3) ... [2025-03-03 14:56:49,409 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e4e9f27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 02:56:49, skipping insertion in model container [2025-03-03 14:56:49,409 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:56:44" (2/3) ... [2025-03-03 14:56:49,409 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e4e9f27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 02:56:49, skipping insertion in model container [2025-03-03 14:56:49,409 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 02:56:49" (3/3) ... [2025-03-03 14:56:49,411 INFO L128 eAbstractionObserver]: Analyzing ICFG rekcba_nxt.1.M1-1.c [2025-03-03 14:56:49,422 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-03 14:56:49,424 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG rekcba_nxt.1.M1-1.c that has 16 procedures, 1137 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-03 14:56:49,529 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-03 14:56:49,538 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@10c2fd42, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-03 14:56:49,538 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-03 14:56:49,544 INFO L276 IsEmpty]: Start isEmpty. Operand has 1137 states, 728 states have (on average 1.2884615384615385) internal successors, (938), 760 states have internal predecessors, (938), 392 states have call successors, (392), 15 states have call predecessors, (392), 15 states have return successors, (392), 390 states have call predecessors, (392), 392 states have call successors, (392) [2025-03-03 14:56:49,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 723 [2025-03-03 14:56:49,589 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:56:49,590 INFO L218 NwaCegarLoop]: trace histogram [85, 85, 85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:56:49,590 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:56:49,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:56:49,594 INFO L85 PathProgramCache]: Analyzing trace with hash -554561153, now seen corresponding path program 1 times [2025-03-03 14:56:49,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:56:49,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144872037] [2025-03-03 14:56:49,600 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:56:49,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:56:49,870 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 722 statements into 1 equivalence classes. [2025-03-03 14:56:49,960 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 722 of 722 statements. [2025-03-03 14:56:49,961 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:56:49,961 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:56:50,447 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 0 proven. 168 refuted. 0 times theorem prover too weak. 14112 trivial. 0 not checked. [2025-03-03 14:56:50,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:56:50,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144872037] [2025-03-03 14:56:50,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144872037] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:56:50,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [704836985] [2025-03-03 14:56:50,449 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:56:50,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:56:50,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:56:50,452 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:56:50,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-03 14:56:51,009 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 722 statements into 1 equivalence classes. [2025-03-03 14:56:51,301 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 722 of 722 statements. [2025-03-03 14:56:51,301 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:56:51,302 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:56:51,313 INFO L256 TraceCheckSpWp]: Trace formula consists of 2560 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-03 14:56:51,332 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:56:51,386 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 168 proven. 0 refuted. 0 times theorem prover too weak. 14112 trivial. 0 not checked. [2025-03-03 14:56:51,387 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:56:51,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [704836985] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:56:51,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:56:51,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-03 14:56:51,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421497308] [2025-03-03 14:56:51,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:56:51,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-03 14:56:51,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:56:51,411 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-03 14:56:51,411 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-03 14:56:51,414 INFO L87 Difference]: Start difference. First operand has 1137 states, 728 states have (on average 1.2884615384615385) internal successors, (938), 760 states have internal predecessors, (938), 392 states have call successors, (392), 15 states have call predecessors, (392), 15 states have return successors, (392), 390 states have call predecessors, (392), 392 states have call successors, (392) Second operand has 2 states, 2 states have (on average 151.0) internal successors, (302), 2 states have internal predecessors, (302), 2 states have call successors, (85), 2 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 2 states have call successors, (85) [2025-03-03 14:56:51,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:56:51,512 INFO L93 Difference]: Finished difference Result 2269 states and 3814 transitions. [2025-03-03 14:56:51,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-03 14:56:51,516 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 151.0) internal successors, (302), 2 states have internal predecessors, (302), 2 states have call successors, (85), 2 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 2 states have call successors, (85) Word has length 722 [2025-03-03 14:56:51,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:56:51,536 INFO L225 Difference]: With dead ends: 2269 [2025-03-03 14:56:51,536 INFO L226 Difference]: Without dead ends: 1131 [2025-03-03 14:56:51,553 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 723 GetRequests, 723 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-03 14:56:51,556 INFO L435 NwaCegarLoop]: 1720 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1720 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:56:51,557 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1720 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:56:51,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1131 states. [2025-03-03 14:56:51,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1131 to 1131. [2025-03-03 14:56:51,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1131 states, 723 states have (on average 1.2849239280774551) internal successors, (929), 754 states have internal predecessors, (929), 392 states have call successors, (392), 15 states have call predecessors, (392), 15 states have return successors, (392), 390 states have call predecessors, (392), 392 states have call successors, (392) [2025-03-03 14:56:51,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1131 states to 1131 states and 1713 transitions. [2025-03-03 14:56:51,734 INFO L78 Accepts]: Start accepts. Automaton has 1131 states and 1713 transitions. Word has length 722 [2025-03-03 14:56:51,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:56:51,735 INFO L471 AbstractCegarLoop]: Abstraction has 1131 states and 1713 transitions. [2025-03-03 14:56:51,736 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 151.0) internal successors, (302), 2 states have internal predecessors, (302), 2 states have call successors, (85), 2 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 2 states have call successors, (85) [2025-03-03 14:56:51,736 INFO L276 IsEmpty]: Start isEmpty. Operand 1131 states and 1713 transitions. [2025-03-03 14:56:51,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 723 [2025-03-03 14:56:51,756 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:56:51,757 INFO L218 NwaCegarLoop]: trace histogram [85, 85, 85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:56:51,769 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-03 14:56:51,957 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-03-03 14:56:51,958 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:56:51,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:56:51,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1049830414, now seen corresponding path program 1 times [2025-03-03 14:56:51,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:56:51,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559487056] [2025-03-03 14:56:51,959 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:56:51,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:56:52,161 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 722 statements into 1 equivalence classes. [2025-03-03 14:56:57,191 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 722 of 722 statements. [2025-03-03 14:56:57,191 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:56:57,191 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:57:00,356 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 27 proven. 225 refuted. 0 times theorem prover too weak. 14028 trivial. 0 not checked. [2025-03-03 14:57:00,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:57:00,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559487056] [2025-03-03 14:57:00,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559487056] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:57:00,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [375942095] [2025-03-03 14:57:00,357 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:57:00,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:57:00,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:57:00,359 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:57:00,361 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-03 14:57:00,971 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 722 statements into 1 equivalence classes. [2025-03-03 14:57:02,053 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 722 of 722 statements. [2025-03-03 14:57:02,053 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:57:02,053 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:57:02,078 INFO L256 TraceCheckSpWp]: Trace formula consists of 2560 conjuncts, 211 conjuncts are in the unsatisfiable core [2025-03-03 14:57:02,118 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:57:02,179 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-03-03 14:57:02,530 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 1 [2025-03-03 14:57:03,442 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2025-03-03 14:57:03,773 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 276 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 184 treesize of output 53 [2025-03-03 14:57:04,031 INFO L224 Elim1Store]: Index analysis took 241 ms [2025-03-03 14:57:04,078 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 276 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 264 treesize of output 38 [2025-03-03 14:57:17,371 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-03 14:57:17,372 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 116 treesize of output 80