./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-examples/standard_copyInitSum2_ground-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb05a237-2c91-48db-bab3-2ae9f5cd0129/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb05a237-2c91-48db-bab3-2ae9f5cd0129/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb05a237-2c91-48db-bab3-2ae9f5cd0129/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb05a237-2c91-48db-bab3-2ae9f5cd0129/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-examples/standard_copyInitSum2_ground-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb05a237-2c91-48db-bab3-2ae9f5cd0129/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb05a237-2c91-48db-bab3-2ae9f5cd0129/bin/uautomizer-verify-jihMAELWvX --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 495094a11c21f00136d2d1dc803d67f4b0e9f0825a0b561680c3923e1996fa21 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 17:08:55,909 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 17:08:56,008 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb05a237-2c91-48db-bab3-2ae9f5cd0129/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 17:08:56,018 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 17:08:56,018 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 17:08:56,058 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 17:08:56,059 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 17:08:56,060 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 17:08:56,060 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 17:08:56,061 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 17:08:56,061 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 17:08:56,062 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 17:08:56,064 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 17:08:56,065 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 17:08:56,065 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 17:08:56,066 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 17:08:56,066 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 17:08:56,066 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 17:08:56,066 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 17:08:56,067 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 17:08:56,067 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 17:08:56,072 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 17:08:56,073 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 17:08:56,073 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 17:08:56,073 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 17:08:56,074 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 17:08:56,074 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 17:08:56,074 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 17:08:56,074 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 17:08:56,075 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 17:08:56,075 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 17:08:56,075 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 17:08:56,075 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:08:56,076 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 17:08:56,076 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 17:08:56,078 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 17:08:56,078 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 17:08:56,079 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 17:08:56,079 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 17:08:56,079 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 17:08:56,079 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 17:08:56,080 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 17:08:56,080 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb05a237-2c91-48db-bab3-2ae9f5cd0129/bin/uautomizer-verify-jihMAELWvX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb05a237-2c91-48db-bab3-2ae9f5cd0129/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 495094a11c21f00136d2d1dc803d67f4b0e9f0825a0b561680c3923e1996fa21 [2024-11-08 17:08:56,427 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 17:08:56,463 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 17:08:56,466 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 17:08:56,467 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 17:08:56,468 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 17:08:56,469 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb05a237-2c91-48db-bab3-2ae9f5cd0129/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/array-examples/standard_copyInitSum2_ground-2.i Unable to find full path for "g++" [2024-11-08 17:08:58,502 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 17:08:58,713 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 17:08:58,714 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb05a237-2c91-48db-bab3-2ae9f5cd0129/sv-benchmarks/c/array-examples/standard_copyInitSum2_ground-2.i [2024-11-08 17:08:58,722 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb05a237-2c91-48db-bab3-2ae9f5cd0129/bin/uautomizer-verify-jihMAELWvX/data/a9087e4d8/2b07b4c44e4d49adb6dd80bbad427d22/FLAGafd0866e4 [2024-11-08 17:08:59,085 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb05a237-2c91-48db-bab3-2ae9f5cd0129/bin/uautomizer-verify-jihMAELWvX/data/a9087e4d8/2b07b4c44e4d49adb6dd80bbad427d22 [2024-11-08 17:08:59,088 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 17:08:59,090 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 17:08:59,091 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 17:08:59,092 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 17:08:59,099 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 17:08:59,100 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:08:59" (1/1) ... [2024-11-08 17:08:59,101 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49934497 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:08:59, skipping insertion in model container [2024-11-08 17:08:59,102 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:08:59" (1/1) ... [2024-11-08 17:08:59,132 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 17:08:59,361 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_fb05a237-2c91-48db-bab3-2ae9f5cd0129/sv-benchmarks/c/array-examples/standard_copyInitSum2_ground-2.i[823,836] [2024-11-08 17:08:59,382 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:08:59,392 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 17:08:59,407 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_fb05a237-2c91-48db-bab3-2ae9f5cd0129/sv-benchmarks/c/array-examples/standard_copyInitSum2_ground-2.i[823,836] [2024-11-08 17:08:59,415 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:08:59,437 INFO L204 MainTranslator]: Completed translation [2024-11-08 17:08:59,437 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:08:59 WrapperNode [2024-11-08 17:08:59,438 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 17:08:59,439 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 17:08:59,439 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 17:08:59,439 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 17:08:59,447 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:08:59" (1/1) ... [2024-11-08 17:08:59,455 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:08:59" (1/1) ... [2024-11-08 17:08:59,476 INFO L138 Inliner]: procedures = 15, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 62 [2024-11-08 17:08:59,478 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 17:08:59,479 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 17:08:59,479 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 17:08:59,480 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 17:08:59,492 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:08:59" (1/1) ... [2024-11-08 17:08:59,492 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:08:59" (1/1) ... [2024-11-08 17:08:59,498 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:08:59" (1/1) ... [2024-11-08 17:08:59,523 INFO L175 MemorySlicer]: Split 8 memory accesses to 3 slices as follows [2, 2, 4]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 3 writes are split as follows [0, 1, 2]. [2024-11-08 17:08:59,524 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:08:59" (1/1) ... [2024-11-08 17:08:59,524 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:08:59" (1/1) ... [2024-11-08 17:08:59,531 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:08:59" (1/1) ... [2024-11-08 17:08:59,539 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:08:59" (1/1) ... [2024-11-08 17:08:59,543 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:08:59" (1/1) ... [2024-11-08 17:08:59,547 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:08:59" (1/1) ... [2024-11-08 17:08:59,549 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 17:08:59,553 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 17:08:59,553 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 17:08:59,553 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 17:08:59,554 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:08:59" (1/1) ... [2024-11-08 17:08:59,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:08:59,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb05a237-2c91-48db-bab3-2ae9f5cd0129/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:08:59,594 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb05a237-2c91-48db-bab3-2ae9f5cd0129/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 17:08:59,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb05a237-2c91-48db-bab3-2ae9f5cd0129/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 17:08:59,634 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 17:08:59,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 17:08:59,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 17:08:59,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-08 17:08:59,636 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-08 17:08:59,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 17:08:59,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 17:08:59,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-08 17:08:59,636 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 17:08:59,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 17:08:59,637 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 17:08:59,637 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 17:08:59,639 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-08 17:08:59,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-08 17:08:59,740 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 17:08:59,742 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 17:08:59,892 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2024-11-08 17:08:59,892 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 17:08:59,906 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 17:08:59,906 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-08 17:08:59,907 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:08:59 BoogieIcfgContainer [2024-11-08 17:08:59,907 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 17:08:59,913 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 17:08:59,913 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 17:08:59,918 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 17:08:59,920 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 05:08:59" (1/3) ... [2024-11-08 17:08:59,921 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d34fe6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:08:59, skipping insertion in model container [2024-11-08 17:08:59,921 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:08:59" (2/3) ... [2024-11-08 17:08:59,922 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d34fe6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:08:59, skipping insertion in model container [2024-11-08 17:08:59,922 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:08:59" (3/3) ... [2024-11-08 17:08:59,926 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_copyInitSum2_ground-2.i [2024-11-08 17:08:59,946 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 17:08:59,946 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 17:09:00,001 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 17:09:00,008 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;@7af742c4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 17:09:00,008 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 17:09:00,014 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:09:00,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-08 17:09:00,022 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:09:00,023 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:09:00,024 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:09:00,033 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:09:00,033 INFO L85 PathProgramCache]: Analyzing trace with hash -889540528, now seen corresponding path program 1 times [2024-11-08 17:09:00,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:09:00,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198422035] [2024-11-08 17:09:00,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:09:00,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:09:00,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:09:00,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:09:00,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:09:00,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198422035] [2024-11-08 17:09:00,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198422035] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:09:00,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:09:00,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:09:00,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955234791] [2024-11-08 17:09:00,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:09:00,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:09:00,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:09:00,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:09:00,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:09:00,296 INFO L87 Difference]: Start difference. First operand has 21 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:09:00,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:09:00,365 INFO L93 Difference]: Finished difference Result 44 states and 64 transitions. [2024-11-08 17:09:00,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:09:00,368 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-08 17:09:00,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:09:00,376 INFO L225 Difference]: With dead ends: 44 [2024-11-08 17:09:00,376 INFO L226 Difference]: Without dead ends: 23 [2024-11-08 17:09:00,379 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:09:00,382 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 3 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:09:00,383 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 34 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 17:09:00,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-11-08 17:09:00,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-11-08 17:09:00,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 22 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:09:00,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 29 transitions. [2024-11-08 17:09:00,416 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 29 transitions. Word has length 12 [2024-11-08 17:09:00,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:09:00,417 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 29 transitions. [2024-11-08 17:09:00,417 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:09:00,417 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 29 transitions. [2024-11-08 17:09:00,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-08 17:09:00,418 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:09:00,418 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:09:00,419 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 17:09:00,419 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:09:00,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:09:00,421 INFO L85 PathProgramCache]: Analyzing trace with hash 2074693887, now seen corresponding path program 1 times [2024-11-08 17:09:00,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:09:00,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150740195] [2024-11-08 17:09:00,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:09:00,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:09:00,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:09:00,670 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:09:00,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:09:00,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150740195] [2024-11-08 17:09:00,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150740195] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:09:00,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [211434565] [2024-11-08 17:09:00,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:09:00,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:09:00,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb05a237-2c91-48db-bab3-2ae9f5cd0129/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:09:00,677 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb05a237-2c91-48db-bab3-2ae9f5cd0129/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:09:00,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb05a237-2c91-48db-bab3-2ae9f5cd0129/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 17:09:00,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:09:00,781 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 17:09:00,790 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:09:00,865 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:09:00,865 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:09:00,908 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:09:00,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [211434565] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:09:00,913 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:09:00,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-08 17:09:00,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988817182] [2024-11-08 17:09:00,915 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:09:00,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 17:09:00,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:09:00,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 17:09:00,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-08 17:09:00,920 INFO L87 Difference]: Start difference. First operand 23 states and 29 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:09:01,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:09:01,080 INFO L93 Difference]: Finished difference Result 55 states and 80 transitions. [2024-11-08 17:09:01,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 17:09:01,082 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2024-11-08 17:09:01,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:09:01,083 INFO L225 Difference]: With dead ends: 55 [2024-11-08 17:09:01,083 INFO L226 Difference]: Without dead ends: 38 [2024-11-08 17:09:01,083 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-08 17:09:01,085 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 16 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:09:01,087 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 22 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 17:09:01,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-08 17:09:01,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2024-11-08 17:09:01,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.1081081081081081) internal successors, (41), 37 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:09:01,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2024-11-08 17:09:01,102 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 18 [2024-11-08 17:09:01,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:09:01,102 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2024-11-08 17:09:01,103 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:09:01,103 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2024-11-08 17:09:01,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-08 17:09:01,106 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:09:01,106 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:09:01,126 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb05a237-2c91-48db-bab3-2ae9f5cd0129/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 17:09:01,309 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb05a237-2c91-48db-bab3-2ae9f5cd0129/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:09:01,310 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:09:01,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:09:01,311 INFO L85 PathProgramCache]: Analyzing trace with hash -920897652, now seen corresponding path program 2 times [2024-11-08 17:09:01,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:09:01,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95739039] [2024-11-08 17:09:01,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:09:01,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:09:01,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:09:01,701 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-08 17:09:01,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:09:01,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95739039] [2024-11-08 17:09:01,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95739039] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:09:01,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1139563944] [2024-11-08 17:09:01,702 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 17:09:01,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:09:01,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb05a237-2c91-48db-bab3-2ae9f5cd0129/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:09:01,708 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb05a237-2c91-48db-bab3-2ae9f5cd0129/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:09:01,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb05a237-2c91-48db-bab3-2ae9f5cd0129/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 17:09:01,847 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 17:09:01,848 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:09:01,849 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 17:09:01,851 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:09:01,898 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-08 17:09:01,900 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:09:02,008 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-08 17:09:02,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1139563944] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:09:02,008 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:09:02,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-08 17:09:02,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359272194] [2024-11-08 17:09:02,009 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:09:02,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-08 17:09:02,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:09:02,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-08 17:09:02,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-08 17:09:02,014 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:09:02,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:09:02,234 INFO L93 Difference]: Finished difference Result 101 states and 124 transitions. [2024-11-08 17:09:02,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-08 17:09:02,235 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2024-11-08 17:09:02,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:09:02,238 INFO L225 Difference]: With dead ends: 101 [2024-11-08 17:09:02,238 INFO L226 Difference]: Without dead ends: 74 [2024-11-08 17:09:02,239 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-08 17:09:02,240 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 54 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 17:09:02,242 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 30 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 17:09:02,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-11-08 17:09:02,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2024-11-08 17:09:02,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.0547945205479452) internal successors, (77), 73 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:09:02,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 77 transitions. [2024-11-08 17:09:02,257 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 77 transitions. Word has length 36 [2024-11-08 17:09:02,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:09:02,258 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 77 transitions. [2024-11-08 17:09:02,258 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:09:02,258 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 77 transitions. [2024-11-08 17:09:02,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-08 17:09:02,265 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:09:02,265 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:09:02,286 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb05a237-2c91-48db-bab3-2ae9f5cd0129/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 17:09:02,466 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb05a237-2c91-48db-bab3-2ae9f5cd0129/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:09:02,466 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:09:02,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:09:02,467 INFO L85 PathProgramCache]: Analyzing trace with hash -496568090, now seen corresponding path program 3 times [2024-11-08 17:09:02,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:09:02,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34294840] [2024-11-08 17:09:02,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:09:02,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:09:02,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:09:02,998 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2024-11-08 17:09:02,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:09:02,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34294840] [2024-11-08 17:09:02,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34294840] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:09:02,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [668279053] [2024-11-08 17:09:02,999 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 17:09:02,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:09:03,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb05a237-2c91-48db-bab3-2ae9f5cd0129/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:09:03,003 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb05a237-2c91-48db-bab3-2ae9f5cd0129/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:09:03,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb05a237-2c91-48db-bab3-2ae9f5cd0129/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 17:09:04,014 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-08 17:09:04,014 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:09:04,019 INFO L255 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-08 17:09:04,023 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:09:04,130 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 10 proven. 100 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2024-11-08 17:09:04,131 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:09:04,461 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2024-11-08 17:09:04,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [668279053] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:09:04,465 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:09:04,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 13] total 26 [2024-11-08 17:09:04,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85526344] [2024-11-08 17:09:04,466 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:09:04,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-08 17:09:04,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:09:04,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-08 17:09:04,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2024-11-08 17:09:04,469 INFO L87 Difference]: Start difference. First operand 74 states and 77 transitions. Second operand has 26 states, 26 states have (on average 3.3076923076923075) internal successors, (86), 26 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:09:04,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:09:04,890 INFO L93 Difference]: Finished difference Result 197 states and 238 transitions. [2024-11-08 17:09:04,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-08 17:09:04,891 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.3076923076923075) internal successors, (86), 26 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2024-11-08 17:09:04,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:09:04,893 INFO L225 Difference]: With dead ends: 197 [2024-11-08 17:09:04,893 INFO L226 Difference]: Without dead ends: 146 [2024-11-08 17:09:04,894 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2024-11-08 17:09:04,895 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 137 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 17:09:04,895 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 27 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-08 17:09:04,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2024-11-08 17:09:04,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2024-11-08 17:09:04,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 145 states have (on average 1.0275862068965518) internal successors, (149), 145 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:09:04,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 149 transitions. [2024-11-08 17:09:04,910 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 149 transitions. Word has length 72 [2024-11-08 17:09:04,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:09:04,911 INFO L471 AbstractCegarLoop]: Abstraction has 146 states and 149 transitions. [2024-11-08 17:09:04,911 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.3076923076923075) internal successors, (86), 26 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:09:04,911 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 149 transitions. [2024-11-08 17:09:04,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-08 17:09:04,914 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:09:04,915 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:09:04,935 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb05a237-2c91-48db-bab3-2ae9f5cd0129/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 17:09:05,118 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb05a237-2c91-48db-bab3-2ae9f5cd0129/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:09:05,119 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:09:05,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:09:05,120 INFO L85 PathProgramCache]: Analyzing trace with hash -543224678, now seen corresponding path program 4 times [2024-11-08 17:09:05,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:09:05,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974461256] [2024-11-08 17:09:05,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:09:05,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:09:05,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:09:06,504 INFO L134 CoverageAnalysis]: Checked inductivity of 1452 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 968 trivial. 0 not checked. [2024-11-08 17:09:06,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:09:06,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974461256] [2024-11-08 17:09:06,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974461256] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:09:06,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791062608] [2024-11-08 17:09:06,505 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 17:09:06,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:09:06,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb05a237-2c91-48db-bab3-2ae9f5cd0129/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:09:06,507 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb05a237-2c91-48db-bab3-2ae9f5cd0129/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:09:06,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb05a237-2c91-48db-bab3-2ae9f5cd0129/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 17:09:06,734 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 17:09:06,734 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:09:06,742 INFO L255 TraceCheckSpWp]: Trace formula consists of 589 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-08 17:09:06,753 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:09:06,891 INFO L134 CoverageAnalysis]: Checked inductivity of 1452 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 968 trivial. 0 not checked. [2024-11-08 17:09:06,891 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:09:08,038 INFO L134 CoverageAnalysis]: Checked inductivity of 1452 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 968 trivial. 0 not checked. [2024-11-08 17:09:08,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [791062608] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:09:08,042 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:09:08,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2024-11-08 17:09:08,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733666776] [2024-11-08 17:09:08,043 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:09:08,044 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-08 17:09:08,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:09:08,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-08 17:09:08,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-08 17:09:08,051 INFO L87 Difference]: Start difference. First operand 146 states and 149 transitions. Second operand has 49 states, 49 states have (on average 2.2244897959183674) internal successors, (109), 49 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:09:09,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:09:09,060 INFO L93 Difference]: Finished difference Result 389 states and 466 transitions. [2024-11-08 17:09:09,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-08 17:09:09,061 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.2244897959183674) internal successors, (109), 49 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 144 [2024-11-08 17:09:09,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:09:09,063 INFO L225 Difference]: With dead ends: 389 [2024-11-08 17:09:09,063 INFO L226 Difference]: Without dead ends: 290 [2024-11-08 17:09:09,065 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-08 17:09:09,066 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 334 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 384 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 384 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-08 17:09:09,067 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [334 Valid, 38 Invalid, 678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [384 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-08 17:09:09,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2024-11-08 17:09:09,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 290. [2024-11-08 17:09:09,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 289 states have (on average 1.013840830449827) internal successors, (293), 289 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:09:09,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 293 transitions. [2024-11-08 17:09:09,099 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 293 transitions. Word has length 144 [2024-11-08 17:09:09,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:09:09,101 INFO L471 AbstractCegarLoop]: Abstraction has 290 states and 293 transitions. [2024-11-08 17:09:09,101 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.2244897959183674) internal successors, (109), 49 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:09:09,103 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 293 transitions. [2024-11-08 17:09:09,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2024-11-08 17:09:09,111 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:09:09,111 INFO L215 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:09:09,134 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb05a237-2c91-48db-bab3-2ae9f5cd0129/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-08 17:09:09,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb05a237-2c91-48db-bab3-2ae9f5cd0129/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:09:09,312 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:09:09,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:09:09,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1452312574, now seen corresponding path program 5 times [2024-11-08 17:09:09,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:09:09,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834042343] [2024-11-08 17:09:09,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:09:09,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:09:09,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:09:13,324 INFO L134 CoverageAnalysis]: Checked inductivity of 6348 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 4232 trivial. 0 not checked. [2024-11-08 17:09:13,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:09:13,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834042343] [2024-11-08 17:09:13,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834042343] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:09:13,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1635199119] [2024-11-08 17:09:13,325 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 17:09:13,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:09:13,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb05a237-2c91-48db-bab3-2ae9f5cd0129/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:09:13,332 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb05a237-2c91-48db-bab3-2ae9f5cd0129/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:09:13,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb05a237-2c91-48db-bab3-2ae9f5cd0129/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process