./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M1-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b7ea333-135e-4281-8bd9-c2cdc4814b22/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b7ea333-135e-4281-8bd9-c2cdc4814b22/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b7ea333-135e-4281-8bd9-c2cdc4814b22/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b7ea333-135e-4281-8bd9-c2cdc4814b22/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M1-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b7ea333-135e-4281-8bd9-c2cdc4814b22/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b7ea333-135e-4281-8bd9-c2cdc4814b22/bin/uautomizer-verify-aQ6SnzHsRB --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 62587b117a9681076835c6b8632932457a449dd934a075adad6a2d524a609396 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:53:06,400 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:53:06,473 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b7ea333-135e-4281-8bd9-c2cdc4814b22/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 02:53:06,480 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:53:06,480 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:53:06,509 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:53:06,509 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:53:06,510 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:53:06,510 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:53:06,510 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:53:06,511 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:53:06,511 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:53:06,511 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:53:06,512 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:53:06,512 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:53:06,512 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:53:06,512 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 02:53:06,512 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:53:06,513 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:53:06,513 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:53:06,513 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:53:06,513 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 02:53:06,513 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:53:06,513 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 02:53:06,514 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:53:06,514 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 02:53:06,514 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:53:06,514 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:53:06,514 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:53:06,514 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:53:06,515 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:53:06,515 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:53:06,515 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:53:06,515 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:53:06,515 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:53:06,515 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:53:06,515 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:53:06,515 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:53:06,516 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:53:06,516 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:53:06,516 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 02:53:06,516 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 02:53:06,516 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:53:06,516 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:53:06,516 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:53:06,516 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:53:06,517 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:53:06,517 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:53:06,517 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 -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b7ea333-135e-4281-8bd9-c2cdc4814b22/bin/uautomizer-verify-aQ6SnzHsRB 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 -> 62587b117a9681076835c6b8632932457a449dd934a075adad6a2d524a609396 [2024-11-28 02:53:06,881 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:53:06,892 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:53:06,894 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:53:06,896 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:53:06,897 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:53:06,898 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b7ea333-135e-4281-8bd9-c2cdc4814b22/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M1-2.c [2024-11-28 02:53:10,201 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b7ea333-135e-4281-8bd9-c2cdc4814b22/bin/uautomizer-verify-aQ6SnzHsRB/data/b8a0f1ef1/95b9fc6a005a4721b4cc7bbcedf2c77a/FLAG0154d0af2 [2024-11-28 02:53:10,712 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:53:10,712 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b7ea333-135e-4281-8bd9-c2cdc4814b22/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M1-2.c [2024-11-28 02:53:10,741 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b7ea333-135e-4281-8bd9-c2cdc4814b22/bin/uautomizer-verify-aQ6SnzHsRB/data/b8a0f1ef1/95b9fc6a005a4721b4cc7bbcedf2c77a/FLAG0154d0af2 [2024-11-28 02:53:10,778 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b7ea333-135e-4281-8bd9-c2cdc4814b22/bin/uautomizer-verify-aQ6SnzHsRB/data/b8a0f1ef1/95b9fc6a005a4721b4cc7bbcedf2c77a [2024-11-28 02:53:10,781 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:53:10,784 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:53:10,785 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:53:10,786 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:53:10,793 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:53:10,793 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:53:10" (1/1) ... [2024-11-28 02:53:10,796 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@380d612d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:53:10, skipping insertion in model container [2024-11-28 02:53:10,796 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:53:10" (1/1) ... [2024-11-28 02:53:10,866 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:53:11,117 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b7ea333-135e-4281-8bd9-c2cdc4814b22/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M1-2.c[1673,1686] [2024-11-28 02:53:11,539 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:53:11,556 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:53:11,567 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"/tmp/aaaa/nxt.ok1.i","-S") [42] [2024-11-28 02:53:11,573 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b7ea333-135e-4281-8bd9-c2cdc4814b22/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M1-2.c[1673,1686] [2024-11-28 02:53:11,840 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:53:11,876 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:53:11,876 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:53:11 WrapperNode [2024-11-28 02:53:11,877 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:53:11,878 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:53:11,878 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:53:11,879 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:53:11,887 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:53:11" (1/1) ... [2024-11-28 02:53:11,950 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:53:11" (1/1) ... [2024-11-28 02:53:12,230 INFO L138 Inliner]: procedures = 57, calls = 1828, calls flagged for inlining = 24, calls inlined = 24, statements flattened = 3992 [2024-11-28 02:53:12,230 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:53:12,231 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:53:12,231 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:53:12,231 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:53:12,242 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:53:11" (1/1) ... [2024-11-28 02:53:12,243 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:53:11" (1/1) ... [2024-11-28 02:53:12,301 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:53:11" (1/1) ... [2024-11-28 02:53:12,384 INFO L175 MemorySlicer]: Split 1382 memory accesses to 17 slices as follows [2, 264, 305, 8, 156, 113, 7, 79, 4, 57, 83, 2, 105, 82, 105, 8, 2]. 22 percent of accesses are in the largest equivalence class. The 166 initializations are split as follows [2, 24, 24, 0, 2, 2, 2, 1, 0, 1, 27, 0, 27, 27, 27, 0, 0]. The 175 writes are split as follows [0, 24, 24, 4, 2, 2, 3, 1, 0, 1, 28, 1, 26, 28, 26, 4, 1]. [2024-11-28 02:53:12,384 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:53:11" (1/1) ... [2024-11-28 02:53:12,384 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:53:11" (1/1) ... [2024-11-28 02:53:12,518 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:53:11" (1/1) ... [2024-11-28 02:53:12,538 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:53:11" (1/1) ... [2024-11-28 02:53:12,636 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:53:11" (1/1) ... [2024-11-28 02:53:12,666 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:53:11" (1/1) ... [2024-11-28 02:53:12,683 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:53:11" (1/1) ... [2024-11-28 02:53:12,733 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:53:12,734 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:53:12,736 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:53:12,736 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:53:12,737 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:53:11" (1/1) ... [2024-11-28 02:53:12,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:53:12,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b7ea333-135e-4281-8bd9-c2cdc4814b22/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:53:12,780 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b7ea333-135e-4281-8bd9-c2cdc4814b22/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:53:12,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b7ea333-135e-4281-8bd9-c2cdc4814b22/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:53:12,821 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:53:12,821 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2024-11-28 02:53:12,821 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2024-11-28 02:53:12,821 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2024-11-28 02:53:12,822 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2024-11-28 02:53:12,822 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 02:53:12,822 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2024-11-28 02:53:12,822 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2024-11-28 02:53:12,822 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2024-11-28 02:53:12,822 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2024-11-28 02:53:12,822 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2024-11-28 02:53:12,822 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2024-11-28 02:53:12,822 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 02:53:12,822 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 02:53:12,822 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-28 02:53:12,822 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-28 02:53:12,822 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-28 02:53:12,823 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-28 02:53:12,823 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-28 02:53:12,823 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-11-28 02:53:12,823 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-11-28 02:53:12,823 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2024-11-28 02:53:12,823 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2024-11-28 02:53:12,823 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2024-11-28 02:53:12,823 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2024-11-28 02:53:12,823 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#13 [2024-11-28 02:53:12,823 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#14 [2024-11-28 02:53:12,823 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#15 [2024-11-28 02:53:12,823 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#16 [2024-11-28 02:53:12,824 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2024-11-28 02:53:12,824 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2024-11-28 02:53:12,824 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2024-11-28 02:53:12,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2024-11-28 02:53:12,824 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2024-11-28 02:53:12,824 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2024-11-28 02:53:12,824 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2024-11-28 02:53:12,824 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2024-11-28 02:53:12,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 02:53:12,828 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2024-11-28 02:53:12,828 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2024-11-28 02:53:12,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 02:53:12,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 02:53:12,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-28 02:53:12,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-28 02:53:12,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-28 02:53:12,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-28 02:53:12,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-28 02:53:12,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-28 02:53:12,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-11-28 02:53:12,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2024-11-28 02:53:12,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2024-11-28 02:53:12,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2024-11-28 02:53:12,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2024-11-28 02:53:12,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#13 [2024-11-28 02:53:12,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#14 [2024-11-28 02:53:12,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#15 [2024-11-28 02:53:12,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#16 [2024-11-28 02:53:12,831 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2024-11-28 02:53:12,831 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2024-11-28 02:53:12,831 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-28 02:53:12,832 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-28 02:53:12,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:53:12,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 02:53:12,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 02:53:12,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-28 02:53:12,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-28 02:53:12,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-28 02:53:12,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-28 02:53:12,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-28 02:53:12,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-28 02:53:12,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-28 02:53:12,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-28 02:53:12,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-28 02:53:12,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-28 02:53:12,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-11-28 02:53:12,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-11-28 02:53:12,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-11-28 02:53:12,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-11-28 02:53:12,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:53:12,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:53:12,833 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2024-11-28 02:53:12,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2024-11-28 02:53:12,833 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2024-11-28 02:53:12,837 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2024-11-28 02:53:12,837 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2024-11-28 02:53:12,837 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2024-11-28 02:53:13,370 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:53:13,373 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:53:21,242 INFO L? ?]: Removed 191 outVars from TransFormulas that were not future-live. [2024-11-28 02:53:21,242 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:53:21,289 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:53:21,289 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-28 02:53:21,290 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:53:21 BoogieIcfgContainer [2024-11-28 02:53:21,290 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:53:21,292 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:53:21,292 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:53:21,298 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:53:21,298 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:53:10" (1/3) ... [2024-11-28 02:53:21,299 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d3acd24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:53:21, skipping insertion in model container [2024-11-28 02:53:21,299 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:53:11" (2/3) ... [2024-11-28 02:53:21,299 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d3acd24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:53:21, skipping insertion in model container [2024-11-28 02:53:21,299 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:53:21" (3/3) ... [2024-11-28 02:53:21,301 INFO L128 eAbstractionObserver]: Analyzing ICFG rekcba_nxt.1.M1-2.c [2024-11-28 02:53:21,318 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:53:21,321 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG rekcba_nxt.1.M1-2.c that has 16 procedures, 1139 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-28 02:53:21,464 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:53:21,480 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;@23657c0a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:53:21,480 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 02:53:21,491 INFO L276 IsEmpty]: Start isEmpty. Operand has 1139 states, 730 states have (on average 1.289041095890411) internal successors, (941), 762 states have internal predecessors, (941), 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) [2024-11-28 02:53:21,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 723 [2024-11-28 02:53:21,611 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:53:21,612 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] [2024-11-28 02:53:21,613 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:53:21,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:53:21,620 INFO L85 PathProgramCache]: Analyzing trace with hash -2120413097, now seen corresponding path program 1 times [2024-11-28 02:53:21,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:53:21,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290067158] [2024-11-28 02:53:21,631 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:53:21,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:53:22,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:53:23,498 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 0 proven. 168 refuted. 0 times theorem prover too weak. 14112 trivial. 0 not checked. [2024-11-28 02:53:23,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:53:23,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290067158] [2024-11-28 02:53:23,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290067158] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:53:23,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2083938223] [2024-11-28 02:53:23,503 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:53:23,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:53:23,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b7ea333-135e-4281-8bd9-c2cdc4814b22/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:53:23,506 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b7ea333-135e-4281-8bd9-c2cdc4814b22/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:53:23,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b7ea333-135e-4281-8bd9-c2cdc4814b22/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 02:53:25,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:53:25,147 INFO L256 TraceCheckSpWp]: Trace formula consists of 2560 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-28 02:53:25,192 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:53:25,305 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 168 proven. 0 refuted. 0 times theorem prover too weak. 14112 trivial. 0 not checked. [2024-11-28 02:53:25,306 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:53:25,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2083938223] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:53:25,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:53:25,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-28 02:53:25,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236454988] [2024-11-28 02:53:25,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:53:25,316 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 02:53:25,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:53:25,344 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 02:53:25,345 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 02:53:25,350 INFO L87 Difference]: Start difference. First operand has 1139 states, 730 states have (on average 1.289041095890411) internal successors, (941), 762 states have internal predecessors, (941), 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) [2024-11-28 02:53:25,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:53:25,550 INFO L93 Difference]: Finished difference Result 2273 states and 3820 transitions. [2024-11-28 02:53:25,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 02:53:25,553 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 [2024-11-28 02:53:25,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:53:25,583 INFO L225 Difference]: With dead ends: 2273 [2024-11-28 02:53:25,585 INFO L226 Difference]: Without dead ends: 1133 [2024-11-28 02:53:25,610 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 [2024-11-28 02:53:25,614 INFO L435 NwaCegarLoop]: 1722 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, 1722 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 [2024-11-28 02:53:25,615 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1722 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:53:25,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1133 states. [2024-11-28 02:53:25,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1133 to 1133. [2024-11-28 02:53:25,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1133 states, 725 states have (on average 1.2841379310344827) internal successors, (931), 756 states have internal predecessors, (931), 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) [2024-11-28 02:53:25,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1133 states to 1133 states and 1715 transitions. [2024-11-28 02:53:26,001 INFO L78 Accepts]: Start accepts. Automaton has 1133 states and 1715 transitions. Word has length 722 [2024-11-28 02:53:26,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:53:26,002 INFO L471 AbstractCegarLoop]: Abstraction has 1133 states and 1715 transitions. [2024-11-28 02:53:26,004 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) [2024-11-28 02:53:26,005 INFO L276 IsEmpty]: Start isEmpty. Operand 1133 states and 1715 transitions. [2024-11-28 02:53:26,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 723 [2024-11-28 02:53:26,051 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:53:26,051 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] [2024-11-28 02:53:26,068 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b7ea333-135e-4281-8bd9-c2cdc4814b22/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 02:53:26,252 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b7ea333-135e-4281-8bd9-c2cdc4814b22/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-28 02:53:26,253 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:53:26,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:53:26,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1184015677, now seen corresponding path program 1 times [2024-11-28 02:53:26,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:53:26,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088568099] [2024-11-28 02:53:26,257 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:53:26,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:53:37,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:53:43,759 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 27 proven. 225 refuted. 0 times theorem prover too weak. 14028 trivial. 0 not checked. [2024-11-28 02:53:43,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:53:43,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088568099] [2024-11-28 02:53:43,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088568099] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:53:43,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1159743563] [2024-11-28 02:53:43,762 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:53:43,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:53:43,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b7ea333-135e-4281-8bd9-c2cdc4814b22/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:53:43,766 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b7ea333-135e-4281-8bd9-c2cdc4814b22/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:53:43,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b7ea333-135e-4281-8bd9-c2cdc4814b22/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 02:53:48,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:53:48,368 INFO L256 TraceCheckSpWp]: Trace formula consists of 2560 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-28 02:53:48,404 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:53:48,956 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 268 treesize of output 15 [2024-11-28 02:53:49,037 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 25 treesize of output 13 [2024-11-28 02:53:52,794 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 21 treesize of output 9 [2024-11-28 02:53:52,888 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 7679 proven. 165 refuted. 0 times theorem prover too weak. 6436 trivial. 0 not checked. [2024-11-28 02:53:52,888 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:53:55,569 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 25 treesize of output 13 [2024-11-28 02:53:55,759 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 27 proven. 225 refuted. 0 times theorem prover too weak. 14028 trivial. 0 not checked. [2024-11-28 02:53:55,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1159743563] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:53:55,759 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:53:55,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2024-11-28 02:53:55,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637586833] [2024-11-28 02:53:55,760 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:53:55,764 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-28 02:53:55,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:53:55,766 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-28 02:53:55,767 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2024-11-28 02:53:55,768 INFO L87 Difference]: Start difference. First operand 1133 states and 1715 transitions. Second operand has 19 states, 16 states have (on average 34.875) internal successors, (558), 19 states have internal predecessors, (558), 10 states have call successors, (203), 5 states have call predecessors, (203), 8 states have return successors, (203), 7 states have call predecessors, (203), 10 states have call successors, (203) [2024-11-28 02:54:06,527 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 02:54:10,551 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 02:54:20,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:54:20,782 INFO L93 Difference]: Finished difference Result 1487 states and 2228 transitions. [2024-11-28 02:54:20,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-28 02:54:20,784 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 16 states have (on average 34.875) internal successors, (558), 19 states have internal predecessors, (558), 10 states have call successors, (203), 5 states have call predecessors, (203), 8 states have return successors, (203), 7 states have call predecessors, (203), 10 states have call successors, (203) Word has length 722 [2024-11-28 02:54:20,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:54:20,811 INFO L225 Difference]: With dead ends: 1487 [2024-11-28 02:54:20,811 INFO L226 Difference]: Without dead ends: 1372 [2024-11-28 02:54:20,814 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1465 GetRequests, 1436 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=234, Invalid=696, Unknown=0, NotChecked=0, Total=930 [2024-11-28 02:54:20,815 INFO L435 NwaCegarLoop]: 914 mSDtfsCounter, 2060 mSDsluCounter, 3055 mSDsCounter, 0 mSdLazyCounter, 8388 mSolverCounterSat, 1967 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2065 SdHoareTripleChecker+Valid, 3969 SdHoareTripleChecker+Invalid, 10357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1967 IncrementalHoareTripleChecker+Valid, 8388 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:54:20,816 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2065 Valid, 3969 Invalid, 10357 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1967 Valid, 8388 Invalid, 2 Unknown, 0 Unchecked, 24.0s Time] [2024-11-28 02:54:20,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1372 states. [2024-11-28 02:54:21,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1372 to 1341. [2024-11-28 02:54:21,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1341 states, 859 states have (on average 1.270081490104773) internal successors, (1091), 893 states have internal predecessors, (1091), 449 states have call successors, (449), 29 states have call predecessors, (449), 32 states have return successors, (491), 448 states have call predecessors, (491), 449 states have call successors, (491) [2024-11-28 02:54:21,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1341 states to 1341 states and 2031 transitions. [2024-11-28 02:54:21,096 INFO L78 Accepts]: Start accepts. Automaton has 1341 states and 2031 transitions. Word has length 722 [2024-11-28 02:54:21,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:54:21,098 INFO L471 AbstractCegarLoop]: Abstraction has 1341 states and 2031 transitions. [2024-11-28 02:54:21,099 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 16 states have (on average 34.875) internal successors, (558), 19 states have internal predecessors, (558), 10 states have call successors, (203), 5 states have call predecessors, (203), 8 states have return successors, (203), 7 states have call predecessors, (203), 10 states have call successors, (203) [2024-11-28 02:54:21,099 INFO L276 IsEmpty]: Start isEmpty. Operand 1341 states and 2031 transitions. [2024-11-28 02:54:21,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 766 [2024-11-28 02:54:21,135 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:54:21,136 INFO L218 NwaCegarLoop]: trace histogram [88, 88, 88, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:54:21,162 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b7ea333-135e-4281-8bd9-c2cdc4814b22/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 02:54:21,340 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b7ea333-135e-4281-8bd9-c2cdc4814b22/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2024-11-28 02:54:21,341 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:54:21,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:54:21,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1037007772, now seen corresponding path program 1 times [2024-11-28 02:54:21,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:54:21,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041821023] [2024-11-28 02:54:21,343 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:54:21,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:54:21,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:54:23,062 INFO L134 CoverageAnalysis]: Checked inductivity of 15312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15312 trivial. 0 not checked. [2024-11-28 02:54:23,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:54:23,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041821023] [2024-11-28 02:54:23,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041821023] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:54:23,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:54:23,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:54:23,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340535645] [2024-11-28 02:54:23,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:54:23,069 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:54:23,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:54:23,070 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:54:23,073 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:54:23,074 INFO L87 Difference]: Start difference. First operand 1341 states and 2031 transitions. Second operand has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 2 states have call successors, (91), 1 states have call predecessors, (91), 2 states have return successors, (91), 2 states have call predecessors, (91), 2 states have call successors, (91) [2024-11-28 02:54:23,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:54:23,238 INFO L93 Difference]: Finished difference Result 1862 states and 2851 transitions. [2024-11-28 02:54:23,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:54:23,239 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 2 states have call successors, (91), 1 states have call predecessors, (91), 2 states have return successors, (91), 2 states have call predecessors, (91), 2 states have call successors, (91) Word has length 765 [2024-11-28 02:54:23,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:54:23,260 INFO L225 Difference]: With dead ends: 1862 [2024-11-28 02:54:23,260 INFO L226 Difference]: Without dead ends: 1341 [2024-11-28 02:54:23,267 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:54:23,268 INFO L435 NwaCegarLoop]: 1712 mSDtfsCounter, 0 mSDsluCounter, 1702 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3414 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:54:23,270 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3414 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:54:23,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1341 states. [2024-11-28 02:54:23,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1341 to 1341. [2024-11-28 02:54:23,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1341 states, 859 states have (on average 1.2677532013969732) internal successors, (1089), 893 states have internal predecessors, (1089), 449 states have call successors, (449), 29 states have call predecessors, (449), 32 states have return successors, (491), 448 states have call predecessors, (491), 449 states have call successors, (491) [2024-11-28 02:54:23,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1341 states to 1341 states and 2029 transitions. [2024-11-28 02:54:23,665 INFO L78 Accepts]: Start accepts. Automaton has 1341 states and 2029 transitions. Word has length 765 [2024-11-28 02:54:23,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:54:23,666 INFO L471 AbstractCegarLoop]: Abstraction has 1341 states and 2029 transitions. [2024-11-28 02:54:23,667 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 2 states have call successors, (91), 1 states have call predecessors, (91), 2 states have return successors, (91), 2 states have call predecessors, (91), 2 states have call successors, (91) [2024-11-28 02:54:23,667 INFO L276 IsEmpty]: Start isEmpty. Operand 1341 states and 2029 transitions. [2024-11-28 02:54:23,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 761 [2024-11-28 02:54:23,690 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:54:23,691 INFO L218 NwaCegarLoop]: trace histogram [86, 86, 86, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:54:23,691 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 02:54:23,693 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:54:23,694 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:54:23,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1501356536, now seen corresponding path program 1 times [2024-11-28 02:54:23,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:54:23,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220666676] [2024-11-28 02:54:23,695 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:54:23,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:54:24,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:54:25,953 INFO L134 CoverageAnalysis]: Checked inductivity of 14623 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14623 trivial. 0 not checked. [2024-11-28 02:54:25,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:54:25,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220666676] [2024-11-28 02:54:25,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220666676] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:54:25,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:54:25,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:54:25,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105041335] [2024-11-28 02:54:25,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:54:25,960 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:54:25,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:54:25,961 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:54:25,961 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:54:25,962 INFO L87 Difference]: Start difference. First operand 1341 states and 2029 transitions. Second operand has 5 states, 5 states have (on average 64.2) internal successors, (321), 5 states have internal predecessors, (321), 4 states have call successors, (91), 1 states have call predecessors, (91), 2 states have return successors, (91), 3 states have call predecessors, (91), 4 states have call successors, (91) [2024-11-28 02:54:29,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:54:29,028 INFO L93 Difference]: Finished difference Result 1866 states and 2839 transitions. [2024-11-28 02:54:29,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:54:29,030 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 64.2) internal successors, (321), 5 states have internal predecessors, (321), 4 states have call successors, (91), 1 states have call predecessors, (91), 2 states have return successors, (91), 3 states have call predecessors, (91), 4 states have call successors, (91) Word has length 760 [2024-11-28 02:54:29,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:54:29,046 INFO L225 Difference]: With dead ends: 1866 [2024-11-28 02:54:29,047 INFO L226 Difference]: Without dead ends: 1345 [2024-11-28 02:54:29,057 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:54:29,059 INFO L435 NwaCegarLoop]: 1754 mSDtfsCounter, 2411 mSDsluCounter, 949 mSDsCounter, 0 mSdLazyCounter, 835 mSolverCounterSat, 546 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2411 SdHoareTripleChecker+Valid, 2703 SdHoareTripleChecker+Invalid, 1381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 546 IncrementalHoareTripleChecker+Valid, 835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-28 02:54:29,060 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2411 Valid, 2703 Invalid, 1381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [546 Valid, 835 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-28 02:54:29,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1345 states. [2024-11-28 02:54:29,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1345 to 1345. [2024-11-28 02:54:29,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1345 states, 866 states have (on average 1.2655889145496535) internal successors, (1096), 897 states have internal predecessors, (1096), 440 states have call successors, (440), 32 states have call predecessors, (440), 38 states have return successors, (481), 445 states have call predecessors, (481), 440 states have call successors, (481) [2024-11-28 02:54:29,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1345 states to 1345 states and 2017 transitions. [2024-11-28 02:54:29,528 INFO L78 Accepts]: Start accepts. Automaton has 1345 states and 2017 transitions. Word has length 760 [2024-11-28 02:54:29,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:54:29,529 INFO L471 AbstractCegarLoop]: Abstraction has 1345 states and 2017 transitions. [2024-11-28 02:54:29,530 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 64.2) internal successors, (321), 5 states have internal predecessors, (321), 4 states have call successors, (91), 1 states have call predecessors, (91), 2 states have return successors, (91), 3 states have call predecessors, (91), 4 states have call successors, (91) [2024-11-28 02:54:29,530 INFO L276 IsEmpty]: Start isEmpty. Operand 1345 states and 2017 transitions. [2024-11-28 02:54:29,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 756 [2024-11-28 02:54:29,546 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:54:29,546 INFO L218 NwaCegarLoop]: trace histogram [86, 86, 86, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:54:29,547 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 02:54:29,547 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:54:29,548 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:54:29,548 INFO L85 PathProgramCache]: Analyzing trace with hash 836328256, now seen corresponding path program 1 times [2024-11-28 02:54:29,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:54:29,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193798754] [2024-11-28 02:54:29,549 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:54:29,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:54:30,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:54:33,135 INFO L134 CoverageAnalysis]: Checked inductivity of 14623 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14623 trivial. 0 not checked. [2024-11-28 02:54:33,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:54:33,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193798754] [2024-11-28 02:54:33,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193798754] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:54:33,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:54:33,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:54:33,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544996426] [2024-11-28 02:54:33,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:54:33,137 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:54:33,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:54:33,139 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:54:33,139 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:54:33,140 INFO L87 Difference]: Start difference. First operand 1345 states and 2017 transitions. Second operand has 5 states, 5 states have (on average 63.6) internal successors, (318), 5 states have internal predecessors, (318), 4 states have call successors, (90), 1 states have call predecessors, (90), 2 states have return successors, (90), 3 states have call predecessors, (90), 4 states have call successors, (90) [2024-11-28 02:54:35,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:54:35,673 INFO L93 Difference]: Finished difference Result 1799 states and 2733 transitions. [2024-11-28 02:54:35,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:54:35,674 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 63.6) internal successors, (318), 5 states have internal predecessors, (318), 4 states have call successors, (90), 1 states have call predecessors, (90), 2 states have return successors, (90), 3 states have call predecessors, (90), 4 states have call successors, (90) Word has length 755 [2024-11-28 02:54:35,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:54:35,689 INFO L225 Difference]: With dead ends: 1799 [2024-11-28 02:54:35,689 INFO L226 Difference]: Without dead ends: 1345 [2024-11-28 02:54:35,697 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:54:35,698 INFO L435 NwaCegarLoop]: 1752 mSDtfsCounter, 1714 mSDsluCounter, 1202 mSDsCounter, 0 mSdLazyCounter, 1105 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1714 SdHoareTripleChecker+Valid, 2954 SdHoareTripleChecker+Invalid, 1109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:54:35,698 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1714 Valid, 2954 Invalid, 1109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1105 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-28 02:54:35,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1345 states. [2024-11-28 02:54:35,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1345 to 1345. [2024-11-28 02:54:35,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1345 states, 866 states have (on average 1.2644341801385681) internal successors, (1095), 897 states have internal predecessors, (1095), 440 states have call successors, (440), 32 states have call predecessors, (440), 38 states have return successors, (481), 445 states have call predecessors, (481), 440 states have call successors, (481) [2024-11-28 02:54:35,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1345 states to 1345 states and 2016 transitions. [2024-11-28 02:54:35,944 INFO L78 Accepts]: Start accepts. Automaton has 1345 states and 2016 transitions. Word has length 755 [2024-11-28 02:54:35,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:54:35,945 INFO L471 AbstractCegarLoop]: Abstraction has 1345 states and 2016 transitions. [2024-11-28 02:54:35,945 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 63.6) internal successors, (318), 5 states have internal predecessors, (318), 4 states have call successors, (90), 1 states have call predecessors, (90), 2 states have return successors, (90), 3 states have call predecessors, (90), 4 states have call successors, (90) [2024-11-28 02:54:35,945 INFO L276 IsEmpty]: Start isEmpty. Operand 1345 states and 2016 transitions. [2024-11-28 02:54:35,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 761 [2024-11-28 02:54:35,965 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:54:35,965 INFO L218 NwaCegarLoop]: trace histogram [86, 86, 86, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:54:35,966 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 02:54:35,966 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:54:35,966 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:54:35,967 INFO L85 PathProgramCache]: Analyzing trace with hash 506767147, now seen corresponding path program 1 times [2024-11-28 02:54:35,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:54:35,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001662376] [2024-11-28 02:54:35,967 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:54:35,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:54:44,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:54:56,326 INFO L134 CoverageAnalysis]: Checked inductivity of 14623 backedges. 96 proven. 159 refuted. 0 times theorem prover too weak. 14368 trivial. 0 not checked. [2024-11-28 02:54:56,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:54:56,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001662376] [2024-11-28 02:54:56,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001662376] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:54:56,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [408774437] [2024-11-28 02:54:56,327 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:54:56,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:54:56,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b7ea333-135e-4281-8bd9-c2cdc4814b22/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:54:56,330 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b7ea333-135e-4281-8bd9-c2cdc4814b22/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:54:56,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b7ea333-135e-4281-8bd9-c2cdc4814b22/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 02:55:00,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:55:00,295 INFO L256 TraceCheckSpWp]: Trace formula consists of 2744 conjuncts, 284 conjuncts are in the unsatisfiable core [2024-11-28 02:55:00,345 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:55:00,451 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-28 02:55:02,355 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 176 treesize of output 144 [2024-11-28 02:55:03,078 INFO L224 Elim1Store]: Index analysis took 629 ms [2024-11-28 02:55:03,234 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 176 treesize of output 67 [2024-11-28 02:55:51,672 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:55:51,673 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 19 select indices, 19 select index equivalence classes, 171 disjoint index pairs (out of 171 index pairs), introduced 19 new quantified variables, introduced 171 case distinctions, treesize of input 227 treesize of output 147