./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 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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_1.5.800.v20200727-1323.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 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 14:49:14,543 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 14:49:14,604 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 14:49:14,608 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 14:49:14,608 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 14:49:14,636 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 14:49:14,636 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 14:49:14,637 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 14:49:14,638 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 14:49:14,638 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 14:49:14,639 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 14:49:14,639 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 14:49:14,639 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 14:49:14,640 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 14:49:14,640 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 14:49:14,641 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 14:49:14,641 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 14:49:14,641 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 14:49:14,642 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 14:49:14,642 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 14:49:14,642 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 14:49:14,643 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 14:49:14,643 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 14:49:14,644 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 14:49:14,644 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 14:49:14,644 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 14:49:14,645 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 14:49:14,645 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 14:49:14,645 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 14:49:14,646 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 14:49:14,646 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 14:49:14,646 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 14:49:14,646 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 14:49:14,647 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 14:49:14,647 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 14:49:14,647 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 14:49:14,648 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 14:49:14,648 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 14:49:14,648 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 14:49:14,648 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 14:49:14,649 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 14:49:14,649 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 14:49:14,649 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f077881e7f4fa96e31e8798f1b4a7ec1ee00f86778c2b79845cdeaf2537e700e [2024-11-18 14:49:14,953 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 14:49:14,977 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 14:49:14,980 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 14:49:14,982 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 14:49:14,982 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 14:49:14,983 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M1-1.c [2024-11-18 14:49:16,467 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 14:49:16,771 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 14:49:16,772 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M1-1.c [2024-11-18 14:49:16,799 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5292d02e/508403c4823a47e99bc6050505380c9a/FLAGe5a120399 [2024-11-18 14:49:17,041 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5292d02e/508403c4823a47e99bc6050505380c9a [2024-11-18 14:49:17,044 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 14:49:17,045 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 14:49:17,048 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 14:49:17,048 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 14:49:17,054 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 14:49:17,054 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:49:17" (1/1) ... [2024-11-18 14:49:17,055 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7af64eef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:49:17, skipping insertion in model container [2024-11-18 14:49:17,056 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:49:17" (1/1) ... [2024-11-18 14:49:17,118 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 14:49:17,350 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] [2024-11-18 14:49:17,743 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 14:49:17,778 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 14:49:17,790 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"/tmp/aaaa/nxt.bug1.i","-S") [42] [2024-11-18 14:49:17,796 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] [2024-11-18 14:49:17,954 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 14:49:17,983 INFO L204 MainTranslator]: Completed translation [2024-11-18 14:49:17,983 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:49:17 WrapperNode [2024-11-18 14:49:17,984 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 14:49:17,985 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 14:49:17,986 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 14:49:17,986 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 14:49:17,993 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:49:17" (1/1) ... [2024-11-18 14:49:18,062 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:49:17" (1/1) ... [2024-11-18 14:49:18,345 INFO L138 Inliner]: procedures = 57, calls = 1828, calls flagged for inlining = 24, calls inlined = 24, statements flattened = 3995 [2024-11-18 14:49:18,346 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 14:49:18,347 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 14:49:18,347 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 14:49:18,347 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 14:49:18,358 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:49:17" (1/1) ... [2024-11-18 14:49:18,359 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:49:17" (1/1) ... [2024-11-18 14:49:18,415 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:49:17" (1/1) ... [2024-11-18 14:49:18,493 INFO L175 MemorySlicer]: Split 1382 memory accesses to 17 slices as follows [2, 264, 305, 156, 113, 79, 57, 83, 8, 105, 7, 82, 105, 2, 4, 2, 8]. 22 percent of accesses are in the largest equivalence class. The 166 initializations are split as follows [2, 24, 24, 2, 2, 1, 1, 27, 0, 27, 2, 27, 27, 0, 0, 0, 0]. The 175 writes are split as follows [0, 24, 24, 2, 2, 1, 1, 28, 4, 26, 3, 28, 26, 1, 0, 1, 4]. [2024-11-18 14:49:18,493 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:49:17" (1/1) ... [2024-11-18 14:49:18,494 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:49:17" (1/1) ... [2024-11-18 14:49:18,614 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:49:17" (1/1) ... [2024-11-18 14:49:18,713 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:49:17" (1/1) ... [2024-11-18 14:49:18,734 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:49:17" (1/1) ... [2024-11-18 14:49:18,752 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:49:17" (1/1) ... [2024-11-18 14:49:18,780 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 14:49:18,782 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 14:49:18,783 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 14:49:18,783 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 14:49:18,784 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:49:17" (1/1) ... [2024-11-18 14:49:18,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 14:49:18,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:49:18,824 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) [2024-11-18 14:49:18,828 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 [2024-11-18 14:49:18,928 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 14:49:18,928 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2024-11-18 14:49:18,928 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2024-11-18 14:49:18,928 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2024-11-18 14:49:18,928 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2024-11-18 14:49:18,928 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-18 14:49:18,928 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2024-11-18 14:49:18,928 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2024-11-18 14:49:18,929 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2024-11-18 14:49:18,929 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2024-11-18 14:49:18,929 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2024-11-18 14:49:18,929 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2024-11-18 14:49:18,929 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-18 14:49:18,929 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-18 14:49:18,929 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-18 14:49:18,929 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-18 14:49:18,929 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-18 14:49:18,929 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-18 14:49:18,930 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-18 14:49:18,930 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-11-18 14:49:18,930 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-11-18 14:49:18,930 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2024-11-18 14:49:18,930 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2024-11-18 14:49:18,936 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2024-11-18 14:49:18,936 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2024-11-18 14:49:18,936 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#13 [2024-11-18 14:49:18,936 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#14 [2024-11-18 14:49:18,936 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#15 [2024-11-18 14:49:18,936 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#16 [2024-11-18 14:49:18,936 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2024-11-18 14:49:18,937 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2024-11-18 14:49:18,937 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2024-11-18 14:49:18,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2024-11-18 14:49:18,937 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2024-11-18 14:49:18,937 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2024-11-18 14:49:18,937 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2024-11-18 14:49:18,937 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2024-11-18 14:49:18,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-18 14:49:18,937 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2024-11-18 14:49:18,937 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2024-11-18 14:49:18,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-18 14:49:18,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-18 14:49:18,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-18 14:49:18,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-18 14:49:18,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-18 14:49:18,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-18 14:49:18,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-18 14:49:18,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-18 14:49:18,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-11-18 14:49:18,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2024-11-18 14:49:18,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2024-11-18 14:49:18,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2024-11-18 14:49:18,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2024-11-18 14:49:18,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#13 [2024-11-18 14:49:18,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#14 [2024-11-18 14:49:18,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#15 [2024-11-18 14:49:18,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#16 [2024-11-18 14:49:18,944 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2024-11-18 14:49:18,944 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2024-11-18 14:49:18,944 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 14:49:18,945 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 14:49:18,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 14:49:18,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-18 14:49:18,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-18 14:49:18,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-18 14:49:18,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-18 14:49:18,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-18 14:49:18,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-18 14:49:18,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-18 14:49:18,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-18 14:49:18,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-18 14:49:18,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-18 14:49:18,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-18 14:49:18,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-18 14:49:18,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-11-18 14:49:18,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-11-18 14:49:18,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-11-18 14:49:18,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-11-18 14:49:18,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 14:49:18,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 14:49:18,947 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2024-11-18 14:49:18,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2024-11-18 14:49:18,947 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2024-11-18 14:49:18,947 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2024-11-18 14:49:18,947 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2024-11-18 14:49:18,947 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2024-11-18 14:49:19,368 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 14:49:19,371 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 14:49:23,710 INFO L? ?]: Removed 193 outVars from TransFormulas that were not future-live. [2024-11-18 14:49:23,710 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 14:49:23,752 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 14:49:23,753 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 14:49:23,753 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:49:23 BoogieIcfgContainer [2024-11-18 14:49:23,754 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 14:49:23,759 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 14:49:23,759 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 14:49:23,763 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 14:49:23,763 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 02:49:17" (1/3) ... [2024-11-18 14:49:23,764 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fe618f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:49:23, skipping insertion in model container [2024-11-18 14:49:23,764 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:49:17" (2/3) ... [2024-11-18 14:49:23,765 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fe618f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:49:23, skipping insertion in model container [2024-11-18 14:49:23,766 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:49:23" (3/3) ... [2024-11-18 14:49:23,767 INFO L112 eAbstractionObserver]: Analyzing ICFG rekcba_nxt.1.M1-1.c [2024-11-18 14:49:23,782 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 14:49:23,782 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 14:49:23,871 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 14:49:23,878 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;@65b83d29, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 14:49:23,878 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 14:49:23,891 INFO L276 IsEmpty]: Start isEmpty. Operand has 1138 states, 729 states have (on average 1.289437585733882) internal successors, (940), 761 states have internal predecessors, (940), 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) [2024-11-18 14:49:23,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 723 [2024-11-18 14:49:23,950 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:49:23,952 INFO L215 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] [2024-11-18 14:49:23,953 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:49:23,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:49:23,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1494844215, now seen corresponding path program 1 times [2024-11-18 14:49:23,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:49:23,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588922056] [2024-11-18 14:49:23,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:49:23,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:49:24,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:49:25,110 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 0 proven. 168 refuted. 0 times theorem prover too weak. 14112 trivial. 0 not checked. [2024-11-18 14:49:25,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:49:25,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588922056] [2024-11-18 14:49:25,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588922056] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:49:25,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1599777455] [2024-11-18 14:49:25,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:49:25,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:49:25,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:49:25,116 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) [2024-11-18 14:49:25,118 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 14:49:26,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:49:26,158 INFO L255 TraceCheckSpWp]: Trace formula consists of 2560 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 14:49:26,194 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:49:26,346 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 168 proven. 0 refuted. 0 times theorem prover too weak. 14112 trivial. 0 not checked. [2024-11-18 14:49:26,346 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:49:26,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1599777455] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:49:26,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:49:26,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-18 14:49:26,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192352132] [2024-11-18 14:49:26,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:49:26,357 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 14:49:26,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:49:26,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 14:49:26,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 14:49:26,390 INFO L87 Difference]: Start difference. First operand has 1138 states, 729 states have (on average 1.289437585733882) internal successors, (940), 761 states have internal predecessors, (940), 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) [2024-11-18 14:49:26,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:49:26,552 INFO L93 Difference]: Finished difference Result 2271 states and 3818 transitions. [2024-11-18 14:49:26,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 14:49:26,555 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 [2024-11-18 14:49:26,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:49:26,586 INFO L225 Difference]: With dead ends: 2271 [2024-11-18 14:49:26,587 INFO L226 Difference]: Without dead ends: 1132 [2024-11-18 14:49:26,608 INFO L431 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 [2024-11-18 14:49:26,613 INFO L432 NwaCegarLoop]: 1721 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, 1721 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:49:26,614 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1721 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:49:26,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1132 states. [2024-11-18 14:49:26,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1132 to 1132. [2024-11-18 14:49:26,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1132 states, 724 states have (on average 1.2845303867403315) internal successors, (930), 755 states have internal predecessors, (930), 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) [2024-11-18 14:49:26,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1132 states to 1132 states and 1714 transitions. [2024-11-18 14:49:26,895 INFO L78 Accepts]: Start accepts. Automaton has 1132 states and 1714 transitions. Word has length 722 [2024-11-18 14:49:26,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:49:26,896 INFO L471 AbstractCegarLoop]: Abstraction has 1132 states and 1714 transitions. [2024-11-18 14:49:26,897 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) [2024-11-18 14:49:26,897 INFO L276 IsEmpty]: Start isEmpty. Operand 1132 states and 1714 transitions. [2024-11-18 14:49:26,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 723 [2024-11-18 14:49:26,926 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:49:26,927 INFO L215 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] [2024-11-18 14:49:26,951 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 14:49:27,127 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 [2024-11-18 14:49:27,128 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:49:27,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:49:27,129 INFO L85 PathProgramCache]: Analyzing trace with hash 504305693, now seen corresponding path program 1 times [2024-11-18 14:49:27,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:49:27,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191930088] [2024-11-18 14:49:27,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:49:27,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:49:35,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:49:39,372 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 27 proven. 225 refuted. 0 times theorem prover too weak. 14028 trivial. 0 not checked. [2024-11-18 14:49:39,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:49:39,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191930088] [2024-11-18 14:49:39,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191930088] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:49:39,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [489814272] [2024-11-18 14:49:39,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:49:39,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:49:39,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:49:39,380 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) [2024-11-18 14:49:39,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 14:49:42,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:49:42,625 INFO L255 TraceCheckSpWp]: Trace formula consists of 2560 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-18 14:49:42,684 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:49:42,763 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 [2024-11-18 14:49:42,814 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 23 treesize of output 3 [2024-11-18 14:49:42,826 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 15 treesize of output 1 [2024-11-18 14:49:43,087 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 17 treesize of output 9 [2024-11-18 14:49:47,534 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 17 treesize of output 9 [2024-11-18 14:49:47,578 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 7050 proven. 180 refuted. 0 times theorem prover too weak. 7050 trivial. 0 not checked. [2024-11-18 14:49:47,578 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:49:50,247 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 9 proven. 492 refuted. 0 times theorem prover too weak. 13779 trivial. 0 not checked. [2024-11-18 14:49:50,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [489814272] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:49:50,247 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:49:50,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 13] total 31 [2024-11-18 14:49:50,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148001998] [2024-11-18 14:49:50,248 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:49:50,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-18 14:49:50,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:49:50,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-18 14:49:50,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=771, Unknown=0, NotChecked=0, Total=930 [2024-11-18 14:49:50,261 INFO L87 Difference]: Start difference. First operand 1132 states and 1714 transitions. Second operand has 31 states, 26 states have (on average 32.76923076923077) internal successors, (852), 29 states have internal predecessors, (852), 14 states have call successors, (255), 4 states have call predecessors, (255), 8 states have return successors, (255), 11 states have call predecessors, (255), 14 states have call successors, (255) [2024-11-18 14:49:59,074 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-18 14:50:02,605 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-18 14:50:05,079 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-18 14:50:09,109 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-18 14:50:13,126 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-18 14:50:17,008 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.86s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-18 14:50:20,815 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-18 14:50:23,003 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-18 14:50:26,026 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-18 14:50:28,723 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-18 14:50:31,650 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.93s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []