./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.2.M4-2.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_25c4b4ba-ba14-4299-9994-fee4c03e70ed/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25c4b4ba-ba14-4299-9994-fee4c03e70ed/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_25c4b4ba-ba14-4299-9994-fee4c03e70ed/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25c4b4ba-ba14-4299-9994-fee4c03e70ed/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.2.M4-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25c4b4ba-ba14-4299-9994-fee4c03e70ed/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_25c4b4ba-ba14-4299-9994-fee4c03e70ed/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 1074202fec0087dade7e2e551bbdbc8477fa7ac87a060024146de6dec8d276ec --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:20:17,321 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:20:17,449 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25c4b4ba-ba14-4299-9994-fee4c03e70ed/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 04:20:17,457 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:20:17,457 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:20:17,504 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:20:17,506 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:20:17,507 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:20:17,507 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:20:17,508 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:20:17,508 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:20:17,509 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:20:17,509 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:20:17,510 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:20:17,510 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:20:17,510 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:20:17,510 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 04:20:17,512 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 04:20:17,512 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:20:17,512 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 04:20:17,512 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:20:17,513 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 04:20:17,513 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:20:17,513 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 04:20:17,513 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 04:20:17,513 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 04:20:17,513 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:20:17,514 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:20:17,514 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:20:17,514 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:20:17,514 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:20:17,514 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:20:17,514 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:20:17,515 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:20:17,515 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:20:17,515 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:20:17,515 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:20:17,515 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:20:17,516 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:20:17,517 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:20:17,517 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 04:20:17,517 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 04:20:17,517 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:20:17,517 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:20:17,518 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:20:17,518 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:20:17,518 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:20:17,518 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:20:17,518 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_25c4b4ba-ba14-4299-9994-fee4c03e70ed/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 -> 1074202fec0087dade7e2e551bbdbc8477fa7ac87a060024146de6dec8d276ec [2024-11-28 04:20:17,919 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:20:17,930 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:20:17,933 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:20:17,934 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:20:17,935 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:20:17,936 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25c4b4ba-ba14-4299-9994-fee4c03e70ed/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.2.M4-2.c [2024-11-28 04:20:21,757 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25c4b4ba-ba14-4299-9994-fee4c03e70ed/bin/uautomizer-verify-aQ6SnzHsRB/data/d5a45fbbd/263620a7ece442f18e75c9365fcf4d35/FLAG1c597b0e6 [2024-11-28 04:20:22,580 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:20:22,581 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25c4b4ba-ba14-4299-9994-fee4c03e70ed/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.2.M4-2.c [2024-11-28 04:20:22,643 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25c4b4ba-ba14-4299-9994-fee4c03e70ed/bin/uautomizer-verify-aQ6SnzHsRB/data/d5a45fbbd/263620a7ece442f18e75c9365fcf4d35/FLAG1c597b0e6 [2024-11-28 04:20:22,675 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25c4b4ba-ba14-4299-9994-fee4c03e70ed/bin/uautomizer-verify-aQ6SnzHsRB/data/d5a45fbbd/263620a7ece442f18e75c9365fcf4d35 [2024-11-28 04:20:22,678 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:20:22,681 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:20:22,683 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:20:22,685 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:20:22,691 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:20:22,692 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:20:22" (1/1) ... [2024-11-28 04:20:22,694 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6eca28fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:20:22, skipping insertion in model container [2024-11-28 04:20:22,696 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:20:22" (1/1) ... [2024-11-28 04:20:22,919 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:20:23,250 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_25c4b4ba-ba14-4299-9994-fee4c03e70ed/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.2.M4-2.c[2278,2291] [2024-11-28 04:20:25,134 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:20:25,193 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:20:25,207 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"/tmp/aaaa/nxt.bug2.i","-S") [51] [2024-11-28 04:20:25,222 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_25c4b4ba-ba14-4299-9994-fee4c03e70ed/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.2.M4-2.c[2278,2291] [2024-11-28 04:20:26,858 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:20:26,946 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:20:26,948 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:20:26 WrapperNode [2024-11-28 04:20:26,948 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:20:26,949 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:20:26,950 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:20:26,950 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:20:26,967 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:20:26" (1/1) ... [2024-11-28 04:20:27,421 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:20:26" (1/1) ... [2024-11-28 04:20:30,515 INFO L138 Inliner]: procedures = 63, calls = 19692, calls flagged for inlining = 24, calls inlined = 24, statements flattened = 42454 [2024-11-28 04:20:30,516 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:20:30,517 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:20:30,517 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:20:30,518 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:20:30,530 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:20:26" (1/1) ... [2024-11-28 04:20:30,530 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:20:26" (1/1) ... [2024-11-28 04:20:31,139 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:20:26" (1/1) ... [2024-11-28 04:20:31,486 INFO L175 MemorySlicer]: Split 15291 memory accesses to 22 slices as follows [2, 2, 194, 17, 9, 2784, 8, 3812, 2400, 1676, 1252, 852, 325, 429, 325, 429, 2, 325, 429, 8, 4, 7]. 25 percent of accesses are in the largest equivalence class. The 880 initializations are split as follows [2, 0, 0, 8, 4, 96, 0, 96, 8, 8, 4, 4, 108, 108, 108, 108, 0, 108, 108, 0, 0, 2]. The 977 writes are split as follows [0, 1, 98, 1, 1, 96, 4, 96, 8, 8, 4, 4, 109, 107, 109, 107, 1, 109, 107, 4, 0, 3]. [2024-11-28 04:20:31,486 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:20:26" (1/1) ... [2024-11-28 04:20:31,487 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:20:26" (1/1) ... [2024-11-28 04:20:32,709 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:20:26" (1/1) ... [2024-11-28 04:20:32,756 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:20:26" (1/1) ... [2024-11-28 04:20:32,869 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:20:26" (1/1) ... [2024-11-28 04:20:33,100 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:20:26" (1/1) ... [2024-11-28 04:20:33,193 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:20:26" (1/1) ... [2024-11-28 04:20:33,821 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:20:33,822 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:20:33,823 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:20:33,824 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:20:33,825 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:20:26" (1/1) ... [2024-11-28 04:20:33,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:20:33,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25c4b4ba-ba14-4299-9994-fee4c03e70ed/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:20:33,871 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25c4b4ba-ba14-4299-9994-fee4c03e70ed/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:20:33,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25c4b4ba-ba14-4299-9994-fee4c03e70ed/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:20:33,923 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:20:33,923 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2024-11-28 04:20:33,924 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2024-11-28 04:20:33,924 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2024-11-28 04:20:33,924 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2024-11-28 04:20:33,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-11-28 04:20:33,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-11-28 04:20:33,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-11-28 04:20:33,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-11-28 04:20:33,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-11-28 04:20:33,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2024-11-28 04:20:33,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#6 [2024-11-28 04:20:33,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#7 [2024-11-28 04:20:33,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#8 [2024-11-28 04:20:33,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#9 [2024-11-28 04:20:33,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#10 [2024-11-28 04:20:33,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#11 [2024-11-28 04:20:33,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#12 [2024-11-28 04:20:33,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#13 [2024-11-28 04:20:33,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#14 [2024-11-28 04:20:33,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#15 [2024-11-28 04:20:33,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#16 [2024-11-28 04:20:33,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#17 [2024-11-28 04:20:33,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#18 [2024-11-28 04:20:33,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#19 [2024-11-28 04:20:33,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#20 [2024-11-28 04:20:33,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#21 [2024-11-28 04:20:33,930 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 04:20:33,933 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2024-11-28 04:20:33,933 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2024-11-28 04:20:33,933 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2024-11-28 04:20:33,933 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2024-11-28 04:20:33,933 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_observer_obstacle_flag [2024-11-28 04:20:33,933 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_observer_obstacle_flag [2024-11-28 04:20:33,933 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2024-11-28 04:20:33,933 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2024-11-28 04:20:33,934 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 04:20:33,934 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 04:20:33,934 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-28 04:20:33,934 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-28 04:20:33,934 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-28 04:20:33,934 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-28 04:20:33,934 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-28 04:20:33,934 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-11-28 04:20:33,934 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-11-28 04:20:33,934 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2024-11-28 04:20:33,934 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2024-11-28 04:20:33,934 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2024-11-28 04:20:33,934 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2024-11-28 04:20:33,934 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#13 [2024-11-28 04:20:33,935 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#14 [2024-11-28 04:20:33,935 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#15 [2024-11-28 04:20:33,935 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#16 [2024-11-28 04:20:33,935 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#17 [2024-11-28 04:20:33,935 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#18 [2024-11-28 04:20:33,935 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#19 [2024-11-28 04:20:33,935 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#20 [2024-11-28 04:20:33,935 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#21 [2024-11-28 04:20:33,935 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2024-11-28 04:20:33,935 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2024-11-28 04:20:33,935 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2024-11-28 04:20:33,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2024-11-28 04:20:33,936 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2024-11-28 04:20:33,936 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2024-11-28 04:20:33,936 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2024-11-28 04:20:33,936 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2024-11-28 04:20:33,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 04:20:33,936 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2024-11-28 04:20:33,936 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2024-11-28 04:20:33,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 04:20:33,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 04:20:33,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-28 04:20:33,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-28 04:20:33,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-28 04:20:33,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-28 04:20:33,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-28 04:20:33,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-28 04:20:33,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-11-28 04:20:33,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2024-11-28 04:20:33,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2024-11-28 04:20:33,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2024-11-28 04:20:33,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2024-11-28 04:20:33,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#13 [2024-11-28 04:20:33,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#14 [2024-11-28 04:20:33,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#15 [2024-11-28 04:20:33,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#16 [2024-11-28 04:20:33,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#17 [2024-11-28 04:20:33,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#18 [2024-11-28 04:20:33,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#19 [2024-11-28 04:20:33,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#20 [2024-11-28 04:20:33,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#21 [2024-11-28 04:20:33,938 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2024-11-28 04:20:33,938 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2024-11-28 04:20:33,938 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2024-11-28 04:20:33,938 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2024-11-28 04:20:33,938 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_obstacle_flag [2024-11-28 04:20:33,938 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_obstacle_flag [2024-11-28 04:20:33,938 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-28 04:20:33,938 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-28 04:20:33,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 04:20:33,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 04:20:33,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 04:20:33,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-28 04:20:33,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-28 04:20:33,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-28 04:20:33,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-28 04:20:33,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-28 04:20:33,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-28 04:20:33,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-28 04:20:33,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-28 04:20:33,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-28 04:20:33,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-28 04:20:33,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-11-28 04:20:33,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-11-28 04:20:33,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-11-28 04:20:33,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-11-28 04:20:33,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2024-11-28 04:20:33,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2024-11-28 04:20:33,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2024-11-28 04:20:33,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#20 [2024-11-28 04:20:33,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#21 [2024-11-28 04:20:33,944 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:20:33,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:20:33,945 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2024-11-28 04:20:33,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2024-11-28 04:20:33,945 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2024-11-28 04:20:33,946 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2024-11-28 04:20:33,947 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2024-11-28 04:20:33,947 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2024-11-28 04:20:37,146 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:20:37,149 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:21:25,321 INFO L? ?]: Removed 303 outVars from TransFormulas that were not future-live. [2024-11-28 04:21:25,321 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:21:25,748 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:21:25,749 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-28 04:21:25,749 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:21:25 BoogieIcfgContainer [2024-11-28 04:21:25,749 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:21:25,753 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:21:25,753 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:21:25,759 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:21:25,760 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:20:22" (1/3) ... [2024-11-28 04:21:25,761 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50da0991 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:21:25, skipping insertion in model container [2024-11-28 04:21:25,761 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:20:26" (2/3) ... [2024-11-28 04:21:25,761 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50da0991 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:21:25, skipping insertion in model container [2024-11-28 04:21:25,762 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:21:25" (3/3) ... [2024-11-28 04:21:25,763 INFO L128 eAbstractionObserver]: Analyzing ICFG rekcba_nxt.2.M4-2.c [2024-11-28 04:21:25,783 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:21:25,787 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG rekcba_nxt.2.M4-2.c that has 19 procedures, 12490 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-28 04:21:26,269 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:21:26,285 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;@4e9aeefb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:21:26,286 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 04:21:26,330 INFO L276 IsEmpty]: Start isEmpty. Operand has 12490 states, 8127 states have (on average 1.311431032361265) internal successors, (10658), 8240 states have internal predecessors, (10658), 4343 states have call successors, (4343), 18 states have call predecessors, (4343), 18 states have return successors, (4343), 4341 states have call predecessors, (4343), 4343 states have call successors, (4343) [2024-11-28 04:21:27,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5259 [2024-11-28 04:21:27,015 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:21:27,020 INFO L218 NwaCegarLoop]: trace histogram [444, 444, 444, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:21:27,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:21:27,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1692148691, now seen corresponding path program 1 times [2024-11-28 04:21:27,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:21:27,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876862000] [2024-11-28 04:21:27,048 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:21:27,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:21:59,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:22:14,461 INFO L134 CoverageAnalysis]: Checked inductivity of 393384 backedges. 0 proven. 886 refuted. 0 times theorem prover too weak. 392498 trivial. 0 not checked. [2024-11-28 04:22:14,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:22:14,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876862000] [2024-11-28 04:22:14,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876862000] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:22:14,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691769605] [2024-11-28 04:22:14,468 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:22:14,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:22:14,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25c4b4ba-ba14-4299-9994-fee4c03e70ed/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:22:14,475 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25c4b4ba-ba14-4299-9994-fee4c03e70ed/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:22:14,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25c4b4ba-ba14-4299-9994-fee4c03e70ed/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 04:22:55,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:22:55,815 INFO L256 TraceCheckSpWp]: Trace formula consists of 16602 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-28 04:22:55,992 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:22:56,478 INFO L134 CoverageAnalysis]: Checked inductivity of 393384 backedges. 886 proven. 0 refuted. 0 times theorem prover too weak. 392498 trivial. 0 not checked. [2024-11-28 04:22:56,479 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:22:56,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1691769605] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:22:56,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:22:56,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-28 04:22:56,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516933663] [2024-11-28 04:22:56,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:22:56,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 04:22:56,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:22:56,545 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 04:22:56,546 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 04:22:56,600 INFO L87 Difference]: Start difference. First operand has 12490 states, 8127 states have (on average 1.311431032361265) internal successors, (10658), 8240 states have internal predecessors, (10658), 4343 states have call successors, (4343), 18 states have call predecessors, (4343), 18 states have return successors, (4343), 4341 states have call predecessors, (4343), 4343 states have call successors, (4343) Second operand has 2 states, 2 states have (on average 1521.0) internal successors, (3042), 2 states have internal predecessors, (3042), 2 states have call successors, (445), 2 states have call predecessors, (445), 1 states have return successors, (444), 1 states have call predecessors, (444), 2 states have call successors, (444) [2024-11-28 04:22:57,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:22:57,986 INFO L93 Difference]: Finished difference Result 24975 states and 43007 transitions. [2024-11-28 04:22:57,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 04:22:57,996 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 1521.0) internal successors, (3042), 2 states have internal predecessors, (3042), 2 states have call successors, (445), 2 states have call predecessors, (445), 1 states have return successors, (444), 1 states have call predecessors, (444), 2 states have call successors, (444) Word has length 5258 [2024-11-28 04:22:57,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:22:58,184 INFO L225 Difference]: With dead ends: 24975 [2024-11-28 04:22:58,184 INFO L226 Difference]: Without dead ends: 12482 [2024-11-28 04:22:58,412 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5259 GetRequests, 5259 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 04:22:58,420 INFO L435 NwaCegarLoop]: 19341 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, 19341 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:22:58,425 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 19341 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:22:58,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12482 states. [2024-11-28 04:23:10,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12482 to 12482. [2024-11-28 04:23:10,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12482 states, 8120 states have (on average 1.311206896551724) internal successors, (10647), 8233 states have internal predecessors, (10647), 4343 states have call successors, (4343), 18 states have call predecessors, (4343), 18 states have return successors, (4342), 4340 states have call predecessors, (4342), 4342 states have call successors, (4342) [2024-11-28 04:23:10,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12482 states to 12482 states and 19332 transitions. [2024-11-28 04:23:10,965 INFO L78 Accepts]: Start accepts. Automaton has 12482 states and 19332 transitions. Word has length 5258 [2024-11-28 04:23:10,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:23:10,970 INFO L471 AbstractCegarLoop]: Abstraction has 12482 states and 19332 transitions. [2024-11-28 04:23:10,977 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 1521.0) internal successors, (3042), 2 states have internal predecessors, (3042), 2 states have call successors, (445), 2 states have call predecessors, (445), 1 states have return successors, (444), 1 states have call predecessors, (444), 2 states have call successors, (444) [2024-11-28 04:23:10,978 INFO L276 IsEmpty]: Start isEmpty. Operand 12482 states and 19332 transitions. [2024-11-28 04:23:11,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5259 [2024-11-28 04:23:11,690 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:23:11,694 INFO L218 NwaCegarLoop]: trace histogram [444, 444, 444, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:23:11,757 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25c4b4ba-ba14-4299-9994-fee4c03e70ed/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 04:23:11,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25c4b4ba-ba14-4299-9994-fee4c03e70ed/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-28 04:23:11,896 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:23:11,899 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:23:11,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1171943801, now seen corresponding path program 1 times [2024-11-28 04:23:11,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:23:11,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566761174] [2024-11-28 04:23:11,906 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:23:11,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:24:19,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:25:03,739 INFO L134 CoverageAnalysis]: Checked inductivity of 393384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 393384 trivial. 0 not checked. [2024-11-28 04:25:03,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:25:03,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566761174] [2024-11-28 04:25:03,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566761174] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:25:03,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:25:03,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:25:03,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776839788] [2024-11-28 04:25:03,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:25:03,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:25:03,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:25:03,796 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:25:03,796 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:25:03,807 INFO L87 Difference]: Start difference. First operand 12482 states and 19332 transitions. Second operand has 6 states, 5 states have (on average 608.0) internal successors, (3040), 5 states have internal predecessors, (3040), 2 states have call successors, (445), 2 states have call predecessors, (445), 1 states have return successors, (444), 1 states have call predecessors, (444), 1 states have call successors, (444) [2024-11-28 04:25:08,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:25:08,035 INFO L93 Difference]: Finished difference Result 14016 states and 21746 transitions. [2024-11-28 04:25:08,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:25:08,039 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 608.0) internal successors, (3040), 5 states have internal predecessors, (3040), 2 states have call successors, (445), 2 states have call predecessors, (445), 1 states have return successors, (444), 1 states have call predecessors, (444), 1 states have call successors, (444) Word has length 5258 [2024-11-28 04:25:08,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:25:08,208 INFO L225 Difference]: With dead ends: 14016 [2024-11-28 04:25:08,208 INFO L226 Difference]: Without dead ends: 14014 [2024-11-28 04:25:08,220 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:25:08,222 INFO L435 NwaCegarLoop]: 19251 mSDtfsCounter, 15858 mSDsluCounter, 59767 mSDsCounter, 0 mSdLazyCounter, 700 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15858 SdHoareTripleChecker+Valid, 79018 SdHoareTripleChecker+Invalid, 703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.7s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:25:08,223 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15858 Valid, 79018 Invalid, 703 Unknown, 0 Unchecked, 0.7s Time], IncrementalHoareTripleChecker [3 Valid, 700 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-28 04:25:08,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14014 states. [2024-11-28 04:25:37,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14014 to 14012. [2024-11-28 04:25:37,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14012 states, 8972 states have (on average 1.2970352206865805) internal successors, (11637), 9183 states have internal predecessors, (11637), 5006 states have call successors, (5006), 33 states have call predecessors, (5006), 33 states have return successors, (5100), 5001 states have call predecessors, (5100), 5004 states have call successors, (5100) [2024-11-28 04:25:37,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14012 states to 14012 states and 21743 transitions. [2024-11-28 04:25:37,184 INFO L78 Accepts]: Start accepts. Automaton has 14012 states and 21743 transitions. Word has length 5258 [2024-11-28 04:25:37,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:25:37,208 INFO L471 AbstractCegarLoop]: Abstraction has 14012 states and 21743 transitions. [2024-11-28 04:25:37,209 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 608.0) internal successors, (3040), 5 states have internal predecessors, (3040), 2 states have call successors, (445), 2 states have call predecessors, (445), 1 states have return successors, (444), 1 states have call predecessors, (444), 1 states have call successors, (444) [2024-11-28 04:25:37,209 INFO L276 IsEmpty]: Start isEmpty. Operand 14012 states and 21743 transitions. [2024-11-28 04:25:37,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5265 [2024-11-28 04:25:37,873 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:25:37,878 INFO L218 NwaCegarLoop]: trace histogram [444, 444, 444, 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, 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04:25:37,879 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 04:25:37,880 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:25:37,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:25:37,890 INFO L85 PathProgramCache]: Analyzing trace with hash 446099288, now seen corresponding path program 1 times [2024-11-28 04:25:37,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:25:37,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098726655] [2024-11-28 04:25:37,892 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:25:37,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:26:50,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:27:36,738 INFO L134 CoverageAnalysis]: Checked inductivity of 393386 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 393384 trivial. 0 not checked. [2024-11-28 04:27:36,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:27:36,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098726655] [2024-11-28 04:27:36,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098726655] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:27:36,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:27:36,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:27:36,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052081682] [2024-11-28 04:27:36,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:27:36,753 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:27:36,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:27:36,762 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:27:36,766 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:27:36,769 INFO L87 Difference]: Start difference. First operand 14012 states and 21743 transitions. Second operand has 6 states, 5 states have (on average 608.8) internal successors, (3044), 5 states have internal predecessors, (3044), 2 states have call successors, (446), 2 states have call predecessors, (446), 1 states have return successors, (445), 1 states have call predecessors, (445), 1 states have call successors, (445) [2024-11-28 04:27:41,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:27:41,894 INFO L93 Difference]: Finished difference Result 14020 states and 21749 transitions. [2024-11-28 04:27:41,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:27:41,895 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 608.8) internal successors, (3044), 5 states have internal predecessors, (3044), 2 states have call successors, (446), 2 states have call predecessors, (446), 1 states have return successors, (445), 1 states have call predecessors, (445), 1 states have call successors, (445) Word has length 5264 [2024-11-28 04:27:41,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:27:42,128 INFO L225 Difference]: With dead ends: 14020 [2024-11-28 04:27:42,128 INFO L226 Difference]: Without dead ends: 14018 [2024-11-28 04:27:42,143 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:27:42,149 INFO L435 NwaCegarLoop]: 19254 mSDtfsCounter, 15853 mSDsluCounter, 59771 mSDsCounter, 0 mSdLazyCounter, 701 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15853 SdHoareTripleChecker+Valid, 79025 SdHoareTripleChecker+Invalid, 704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.5s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:27:42,150 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15853 Valid, 79025 Invalid, 704 Unknown, 0 Unchecked, 0.5s Time], IncrementalHoareTripleChecker [3 Valid, 701 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-28 04:27:42,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14018 states. [2024-11-28 04:28:09,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14018 to 14016. [2024-11-28 04:28:09,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14016 states, 8975 states have (on average 1.2969359331476322) internal successors, (11640), 9186 states have internal predecessors, (11640), 5006 states have call successors, (5006), 34 states have call predecessors, (5006), 34 states have return successors, (5100), 5001 states have call predecessors, (5100), 5004 states have call successors, (5100) [2024-11-28 04:28:09,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14016 states to 14016 states and 21746 transitions. [2024-11-28 04:28:09,771 INFO L78 Accepts]: Start accepts. Automaton has 14016 states and 21746 transitions. Word has length 5264 [2024-11-28 04:28:09,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:28:09,781 INFO L471 AbstractCegarLoop]: Abstraction has 14016 states and 21746 transitions. [2024-11-28 04:28:09,783 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 608.8) internal successors, (3044), 5 states have internal predecessors, (3044), 2 states have call successors, (446), 2 states have call predecessors, (446), 1 states have return successors, (445), 1 states have call predecessors, (445), 1 states have call successors, (445) [2024-11-28 04:28:09,783 INFO L276 IsEmpty]: Start isEmpty. Operand 14016 states and 21746 transitions. [2024-11-28 04:28:10,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5271 [2024-11-28 04:28:10,655 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:28:10,661 INFO L218 NwaCegarLoop]: trace histogram [444, 444, 444, 3, 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, 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[2024-11-28 04:28:10,662 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 04:28:10,662 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:28:10,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:28:10,671 INFO L85 PathProgramCache]: Analyzing trace with hash -178908427, now seen corresponding path program 1 times [2024-11-28 04:28:10,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:28:10,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329002139] [2024-11-28 04:28:10,673 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:28:10,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:29:20,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:30:02,086 INFO L134 CoverageAnalysis]: Checked inductivity of 393392 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 393388 trivial. 0 not checked. [2024-11-28 04:30:02,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:30:02,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329002139] [2024-11-28 04:30:02,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329002139] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:30:02,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:30:02,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:30:02,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952594657] [2024-11-28 04:30:02,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:30:02,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:30:02,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:30:02,099 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:30:02,099 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:30:02,101 INFO L87 Difference]: Start difference. First operand 14016 states and 21746 transitions. Second operand has 6 states, 5 states have (on average 609.0) internal successors, (3045), 5 states have internal predecessors, (3045), 2 states have call successors, (447), 2 states have call predecessors, (447), 1 states have return successors, (446), 1 states have call predecessors, (446), 1 states have call successors, (446) [2024-11-28 04:30:06,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:30:06,012 INFO L93 Difference]: Finished difference Result 14024 states and 21752 transitions. [2024-11-28 04:30:06,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:30:06,018 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 609.0) internal successors, (3045), 5 states have internal predecessors, (3045), 2 states have call successors, (447), 2 states have call predecessors, (447), 1 states have return successors, (446), 1 states have call predecessors, (446), 1 states have call successors, (446) Word has length 5270 [2024-11-28 04:30:06,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:30:06,248 INFO L225 Difference]: With dead ends: 14024 [2024-11-28 04:30:06,248 INFO L226 Difference]: Without dead ends: 14022 [2024-11-28 04:30:06,260 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:30:06,261 INFO L435 NwaCegarLoop]: 19254 mSDtfsCounter, 15851 mSDsluCounter, 59771 mSDsCounter, 0 mSdLazyCounter, 701 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15851 SdHoareTripleChecker+Valid, 79025 SdHoareTripleChecker+Invalid, 704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:30:06,262 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15851 Valid, 79025 Invalid, 704 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [3 Valid, 701 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-28 04:30:06,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14022 states.