./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-acceleration/array_4.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c701180-7fc2-4a4f-a6c6-ce768be1babc/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c701180-7fc2-4a4f-a6c6-ce768be1babc/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c701180-7fc2-4a4f-a6c6-ce768be1babc/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c701180-7fc2-4a4f-a6c6-ce768be1babc/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-acceleration/array_4.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c701180-7fc2-4a4f-a6c6-ce768be1babc/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c701180-7fc2-4a4f-a6c6-ce768be1babc/bin/uautomizer-verify-qhAvR1uOyd --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 e8c27e61ac5d5a22c0e00a5dbac1b872460567877a501387ed9d5bda89096498 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 12:44:20,757 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 12:44:20,860 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c701180-7fc2-4a4f-a6c6-ce768be1babc/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-13 12:44:20,868 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 12:44:20,868 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 12:44:20,906 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 12:44:20,908 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 12:44:20,908 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 12:44:20,908 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 12:44:20,909 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 12:44:20,909 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 12:44:20,910 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 12:44:20,910 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 12:44:20,910 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 12:44:20,910 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 12:44:20,910 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 12:44:20,911 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 12:44:20,911 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 12:44:20,911 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 12:44:20,911 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 12:44:20,911 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 12:44:20,911 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 12:44:20,911 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 12:44:20,911 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 12:44:20,911 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 12:44:20,911 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 12:44:20,911 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 12:44:20,911 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 12:44:20,911 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 12:44:20,912 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 12:44:20,912 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 12:44:20,912 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 12:44:20,912 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 12:44:20,912 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 12:44:20,912 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 12:44:20,912 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 12:44:20,912 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 12:44:20,912 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 12:44:20,912 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 12:44:20,912 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 12:44:20,912 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 12:44:20,912 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 12:44:20,914 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_7c701180-7fc2-4a4f-a6c6-ce768be1babc/bin/uautomizer-verify-qhAvR1uOyd 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 -> e8c27e61ac5d5a22c0e00a5dbac1b872460567877a501387ed9d5bda89096498 [2024-11-13 12:44:21,382 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 12:44:21,394 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 12:44:21,399 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 12:44:21,401 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 12:44:21,401 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 12:44:21,404 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c701180-7fc2-4a4f-a6c6-ce768be1babc/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/loop-acceleration/array_4.i Unable to find full path for "g++" [2024-11-13 12:44:23,440 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 12:44:23,739 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 12:44:23,741 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c701180-7fc2-4a4f-a6c6-ce768be1babc/sv-benchmarks/c/loop-acceleration/array_4.i [2024-11-13 12:44:23,751 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c701180-7fc2-4a4f-a6c6-ce768be1babc/bin/uautomizer-verify-qhAvR1uOyd/data/f887072ad/0f7be17def3645b296a6e93514b052c5/FLAG24b938c98 [2024-11-13 12:44:23,773 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c701180-7fc2-4a4f-a6c6-ce768be1babc/bin/uautomizer-verify-qhAvR1uOyd/data/f887072ad/0f7be17def3645b296a6e93514b052c5 [2024-11-13 12:44:23,778 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 12:44:23,780 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 12:44:23,782 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 12:44:23,782 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 12:44:23,787 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 12:44:23,788 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 12:44:23" (1/1) ... [2024-11-13 12:44:23,790 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c4eca5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:44:23, skipping insertion in model container [2024-11-13 12:44:23,790 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 12:44:23" (1/1) ... [2024-11-13 12:44:23,808 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 12:44:23,984 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_7c701180-7fc2-4a4f-a6c6-ce768be1babc/sv-benchmarks/c/loop-acceleration/array_4.i[848,861] [2024-11-13 12:44:23,999 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 12:44:24,013 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 12:44:24,025 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_7c701180-7fc2-4a4f-a6c6-ce768be1babc/sv-benchmarks/c/loop-acceleration/array_4.i[848,861] [2024-11-13 12:44:24,031 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 12:44:24,054 INFO L204 MainTranslator]: Completed translation [2024-11-13 12:44:24,055 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:44:24 WrapperNode [2024-11-13 12:44:24,058 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 12:44:24,060 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 12:44:24,060 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 12:44:24,060 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 12:44:24,068 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:44:24" (1/1) ... [2024-11-13 12:44:24,076 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:44:24" (1/1) ... [2024-11-13 12:44:24,096 INFO L138 Inliner]: procedures = 16, calls = 12, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 41 [2024-11-13 12:44:24,097 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 12:44:24,099 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 12:44:24,099 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 12:44:24,099 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 12:44:24,110 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:44:24" (1/1) ... [2024-11-13 12:44:24,110 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:44:24" (1/1) ... [2024-11-13 12:44:24,112 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:44:24" (1/1) ... [2024-11-13 12:44:24,131 INFO L175 MemorySlicer]: Split 5 memory accesses to 2 slices as follows [2, 3]. 60 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-11-13 12:44:24,132 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:44:24" (1/1) ... [2024-11-13 12:44:24,132 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:44:24" (1/1) ... [2024-11-13 12:44:24,141 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:44:24" (1/1) ... [2024-11-13 12:44:24,149 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:44:24" (1/1) ... [2024-11-13 12:44:24,150 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:44:24" (1/1) ... [2024-11-13 12:44:24,150 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:44:24" (1/1) ... [2024-11-13 12:44:24,153 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 12:44:24,156 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 12:44:24,156 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 12:44:24,157 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 12:44:24,158 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:44:24" (1/1) ... [2024-11-13 12:44:24,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 12:44:24,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c701180-7fc2-4a4f-a6c6-ce768be1babc/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:44:24,189 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c701180-7fc2-4a4f-a6c6-ce768be1babc/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 12:44:24,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c701180-7fc2-4a4f-a6c6-ce768be1babc/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 12:44:24,220 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 12:44:24,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 12:44:24,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-13 12:44:24,220 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-13 12:44:24,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-13 12:44:24,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-13 12:44:24,221 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 12:44:24,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 12:44:24,221 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-13 12:44:24,221 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-13 12:44:24,221 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-13 12:44:24,288 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 12:44:24,290 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 12:44:24,406 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2024-11-13 12:44:24,406 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 12:44:24,416 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 12:44:24,416 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-13 12:44:24,416 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 12:44:24 BoogieIcfgContainer [2024-11-13 12:44:24,417 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 12:44:24,419 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 12:44:24,419 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 12:44:24,424 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 12:44:24,424 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 12:44:23" (1/3) ... [2024-11-13 12:44:24,425 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d855be1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 12:44:24, skipping insertion in model container [2024-11-13 12:44:24,425 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:44:24" (2/3) ... [2024-11-13 12:44:24,425 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d855be1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 12:44:24, skipping insertion in model container [2024-11-13 12:44:24,425 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 12:44:24" (3/3) ... [2024-11-13 12:44:24,427 INFO L112 eAbstractionObserver]: Analyzing ICFG array_4.i [2024-11-13 12:44:24,444 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 12:44:24,448 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG array_4.i that has 1 procedures, 14 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2024-11-13 12:44:24,517 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 12:44:24,535 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;@714dae5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 12:44:24,536 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-13 12:44:24,540 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 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) [2024-11-13 12:44:24,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-13 12:44:24,545 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:44:24,546 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:44:24,546 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:44:24,551 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:44:24,551 INFO L85 PathProgramCache]: Analyzing trace with hash 210287085, now seen corresponding path program 1 times [2024-11-13 12:44:24,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:44:24,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903894635] [2024-11-13 12:44:24,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:44:24,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:44:24,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:44:24,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:44:24,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:44:24,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903894635] [2024-11-13 12:44:24,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903894635] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:44:24,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:44:24,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 12:44:24,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856811326] [2024-11-13 12:44:24,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:44:24,853 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 12:44:24,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:44:24,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 12:44:24,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 12:44:24,880 INFO L87 Difference]: Start difference. First operand has 14 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 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 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2024-11-13 12:44:24,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:44:24,936 INFO L93 Difference]: Finished difference Result 29 states and 39 transitions. [2024-11-13 12:44:24,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 12:44:24,942 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 8 [2024-11-13 12:44:24,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:44:24,949 INFO L225 Difference]: With dead ends: 29 [2024-11-13 12:44:24,950 INFO L226 Difference]: Without dead ends: 14 [2024-11-13 12:44:24,954 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 [2024-11-13 12:44:24,958 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 2 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 12:44:24,960 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 18 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 12:44:24,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2024-11-13 12:44:24,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 11. [2024-11-13 12:44:24,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.2) internal successors, (12), 10 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) [2024-11-13 12:44:24,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2024-11-13 12:44:24,996 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 8 [2024-11-13 12:44:24,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:44:24,998 INFO L471 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2024-11-13 12:44:24,999 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2024-11-13 12:44:25,000 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2024-11-13 12:44:25,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-13 12:44:25,000 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:44:25,001 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:44:25,002 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 12:44:25,002 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:44:25,004 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:44:25,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1940479955, now seen corresponding path program 1 times [2024-11-13 12:44:25,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:44:25,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381523560] [2024-11-13 12:44:25,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:44:25,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:44:25,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:44:25,158 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:44:25,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:44:25,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381523560] [2024-11-13 12:44:25,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381523560] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:44:25,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [400261863] [2024-11-13 12:44:25,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:44:25,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:44:25,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c701180-7fc2-4a4f-a6c6-ce768be1babc/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:44:25,164 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c701180-7fc2-4a4f-a6c6-ce768be1babc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:44:25,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c701180-7fc2-4a4f-a6c6-ce768be1babc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 12:44:25,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:44:25,276 INFO L255 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 12:44:25,281 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:44:25,336 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:44:25,336 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:44:25,379 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:44:25,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [400261863] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 12:44:25,379 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 12:44:25,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-13 12:44:25,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565536203] [2024-11-13 12:44:25,380 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 12:44:25,385 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 12:44:25,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:44:25,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 12:44:25,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-13 12:44:25,386 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 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) [2024-11-13 12:44:25,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:44:25,472 INFO L93 Difference]: Finished difference Result 33 states and 41 transitions. [2024-11-13 12:44:25,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 12:44:25,473 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 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 10 [2024-11-13 12:44:25,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:44:25,475 INFO L225 Difference]: With dead ends: 33 [2024-11-13 12:44:25,475 INFO L226 Difference]: Without dead ends: 26 [2024-11-13 12:44:25,475 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-13 12:44:25,476 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 10 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 12:44:25,477 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 21 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 12:44:25,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-13 12:44:25,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 14. [2024-11-13 12:44:25,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 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) [2024-11-13 12:44:25,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2024-11-13 12:44:25,483 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 10 [2024-11-13 12:44:25,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:44:25,483 INFO L471 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2024-11-13 12:44:25,483 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 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) [2024-11-13 12:44:25,483 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2024-11-13 12:44:25,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-13 12:44:25,484 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:44:25,484 INFO L215 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:44:25,505 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c701180-7fc2-4a4f-a6c6-ce768be1babc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 12:44:25,688 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c701180-7fc2-4a4f-a6c6-ce768be1babc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:44:25,688 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:44:25,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:44:25,689 INFO L85 PathProgramCache]: Analyzing trace with hash -425467759, now seen corresponding path program 2 times [2024-11-13 12:44:25,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:44:25,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407621552] [2024-11-13 12:44:25,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:44:25,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:44:25,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:44:25,930 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-13 12:44:25,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:44:25,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407621552] [2024-11-13 12:44:25,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407621552] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:44:25,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:44:25,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 12:44:25,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540391853] [2024-11-13 12:44:25,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:44:25,931 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 12:44:25,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:44:25,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 12:44:25,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 12:44:25,932 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2024-11-13 12:44:25,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:44:25,960 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2024-11-13 12:44:25,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 12:44:25,961 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 13 [2024-11-13 12:44:25,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:44:25,962 INFO L225 Difference]: With dead ends: 20 [2024-11-13 12:44:25,962 INFO L226 Difference]: Without dead ends: 16 [2024-11-13 12:44:25,962 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 12:44:25,963 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 12:44:25,963 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 15 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 12:44:25,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2024-11-13 12:44:25,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2024-11-13 12:44:25,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 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) [2024-11-13 12:44:25,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2024-11-13 12:44:25,967 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 13 [2024-11-13 12:44:25,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:44:25,967 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2024-11-13 12:44:25,968 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2024-11-13 12:44:25,968 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2024-11-13 12:44:25,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-13 12:44:25,968 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:44:25,968 INFO L215 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:44:25,968 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 12:44:25,969 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:44:25,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:44:25,969 INFO L85 PathProgramCache]: Analyzing trace with hash -803948628, now seen corresponding path program 1 times [2024-11-13 12:44:25,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:44:25,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826139384] [2024-11-13 12:44:25,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:44:25,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:44:26,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:44:26,184 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-13 12:44:26,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:44:26,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826139384] [2024-11-13 12:44:26,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826139384] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:44:26,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [529399956] [2024-11-13 12:44:26,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:44:26,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:44:26,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c701180-7fc2-4a4f-a6c6-ce768be1babc/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:44:26,187 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c701180-7fc2-4a4f-a6c6-ce768be1babc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:44:26,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c701180-7fc2-4a4f-a6c6-ce768be1babc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 12:44:26,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:44:26,291 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 12:44:26,293 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:44:26,365 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 12:44:26,367 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:44:26,495 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 12:44:26,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [529399956] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 12:44:26,496 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 12:44:26,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 14 [2024-11-13 12:44:26,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532904470] [2024-11-13 12:44:26,497 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 12:44:26,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-13 12:44:26,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:44:26,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-13 12:44:26,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2024-11-13 12:44:26,501 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 states have internal predecessors, (30), 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) [2024-11-13 12:44:26,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:44:26,644 INFO L93 Difference]: Finished difference Result 59 states and 75 transitions. [2024-11-13 12:44:26,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 12:44:26,647 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 states have internal predecessors, (30), 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 15 [2024-11-13 12:44:26,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:44:26,648 INFO L225 Difference]: With dead ends: 59 [2024-11-13 12:44:26,648 INFO L226 Difference]: Without dead ends: 40 [2024-11-13 12:44:26,648 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2024-11-13 12:44:26,649 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 28 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 12:44:26,649 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 38 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 12:44:26,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-11-13 12:44:26,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2024-11-13 12:44:26,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.0512820512820513) internal successors, (41), 39 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) [2024-11-13 12:44:26,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2024-11-13 12:44:26,663 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 15 [2024-11-13 12:44:26,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:44:26,663 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2024-11-13 12:44:26,663 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 states have internal predecessors, (30), 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) [2024-11-13 12:44:26,663 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2024-11-13 12:44:26,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-13 12:44:26,664 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:44:26,664 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:44:26,685 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c701180-7fc2-4a4f-a6c6-ce768be1babc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 12:44:26,864 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c701180-7fc2-4a4f-a6c6-ce768be1babc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:44:26,865 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:44:26,865 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:44:26,865 INFO L85 PathProgramCache]: Analyzing trace with hash -326619553, now seen corresponding path program 2 times [2024-11-13 12:44:26,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:44:26,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749441967] [2024-11-13 12:44:26,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:44:26,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:44:26,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:44:27,290 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2024-11-13 12:44:27,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:44:27,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749441967] [2024-11-13 12:44:27,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749441967] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:44:27,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273735839] [2024-11-13 12:44:27,292 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 12:44:27,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:44:27,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c701180-7fc2-4a4f-a6c6-ce768be1babc/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:44:27,295 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c701180-7fc2-4a4f-a6c6-ce768be1babc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:44:27,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c701180-7fc2-4a4f-a6c6-ce768be1babc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 12:44:27,426 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 12:44:27,427 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 12:44:27,428 INFO L255 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-13 12:44:27,431 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:44:27,484 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2024-11-13 12:44:27,484 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:44:27,827 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2024-11-13 12:44:27,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1273735839] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 12:44:27,827 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 12:44:27,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-11-13 12:44:27,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582596453] [2024-11-13 12:44:27,828 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 12:44:27,828 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-13 12:44:27,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:44:27,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-13 12:44:27,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-13 12:44:27,829 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand has 25 states, 25 states have (on average 1.36) internal successors, (34), 25 states have internal predecessors, (34), 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) [2024-11-13 12:44:28,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:44:28,058 INFO L93 Difference]: Finished difference Result 115 states and 140 transitions. [2024-11-13 12:44:28,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-13 12:44:28,061 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.36) internal successors, (34), 25 states have internal predecessors, (34), 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 39 [2024-11-13 12:44:28,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:44:28,062 INFO L225 Difference]: With dead ends: 115 [2024-11-13 12:44:28,062 INFO L226 Difference]: Without dead ends: 88 [2024-11-13 12:44:28,063 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-13 12:44:28,066 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 77 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 12:44:28,066 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 33 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 12:44:28,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-11-13 12:44:28,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 52. [2024-11-13 12:44:28,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.0392156862745099) internal successors, (53), 51 states have internal predecessors, (53), 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) [2024-11-13 12:44:28,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 53 transitions. [2024-11-13 12:44:28,087 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 53 transitions. Word has length 39 [2024-11-13 12:44:28,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:44:28,087 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 53 transitions. [2024-11-13 12:44:28,087 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.36) internal successors, (34), 25 states have internal predecessors, (34), 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) [2024-11-13 12:44:28,087 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 53 transitions. [2024-11-13 12:44:28,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-13 12:44:28,091 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:44:28,091 INFO L215 NwaCegarLoop]: trace histogram [22, 11, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:44:28,116 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c701180-7fc2-4a4f-a6c6-ce768be1babc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 12:44:28,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c701180-7fc2-4a4f-a6c6-ce768be1babc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:44:28,292 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:44:28,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:44:28,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1768112991, now seen corresponding path program 3 times [2024-11-13 12:44:28,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:44:28,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997483154] [2024-11-13 12:44:28,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:44:28,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:44:28,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:44:29,270 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2024-11-13 12:44:29,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:44:29,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997483154] [2024-11-13 12:44:29,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997483154] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:44:29,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1816687354] [2024-11-13 12:44:29,273 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 12:44:29,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:44:29,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c701180-7fc2-4a4f-a6c6-ce768be1babc/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:44:29,275 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c701180-7fc2-4a4f-a6c6-ce768be1babc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:44:29,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c701180-7fc2-4a4f-a6c6-ce768be1babc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 12:44:31,336 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-13 12:44:31,337 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 12:44:31,342 INFO L255 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-13 12:44:31,348 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:44:31,450 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2024-11-13 12:44:31,450 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:44:31,993 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2024-11-13 12:44:31,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1816687354] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 12:44:31,994 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 12:44:31,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 14, 14] total 39 [2024-11-13 12:44:31,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456553114] [2024-11-13 12:44:31,995 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 12:44:31,996 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-13 12:44:31,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:44:31,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-13 12:44:31,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=671, Invalid=811, Unknown=0, NotChecked=0, Total=1482 [2024-11-13 12:44:32,001 INFO L87 Difference]: Start difference. First operand 52 states and 53 transitions. Second operand has 39 states, 39 states have (on average 2.1794871794871793) internal successors, (85), 39 states have internal predecessors, (85), 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) [2024-11-13 12:44:32,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:44:32,350 INFO L93 Difference]: Finished difference Result 162 states and 197 transitions. [2024-11-13 12:44:32,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-13 12:44:32,351 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.1794871794871793) internal successors, (85), 39 states have internal predecessors, (85), 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 51 [2024-11-13 12:44:32,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:44:32,353 INFO L225 Difference]: With dead ends: 162 [2024-11-13 12:44:32,354 INFO L226 Difference]: Without dead ends: 110 [2024-11-13 12:44:32,355 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=671, Invalid=811, Unknown=0, NotChecked=0, Total=1482 [2024-11-13 12:44:32,355 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 80 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 12:44:32,359 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 57 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 12:44:32,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2024-11-13 12:44:32,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2024-11-13 12:44:32,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 109 states have (on average 1.018348623853211) internal successors, (111), 109 states have internal predecessors, (111), 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) [2024-11-13 12:44:32,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 111 transitions. [2024-11-13 12:44:32,383 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 111 transitions. Word has length 51 [2024-11-13 12:44:32,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:44:32,383 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 111 transitions. [2024-11-13 12:44:32,383 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.1794871794871793) internal successors, (85), 39 states have internal predecessors, (85), 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) [2024-11-13 12:44:32,385 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 111 transitions. [2024-11-13 12:44:32,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-13 12:44:32,387 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:44:32,387 INFO L215 NwaCegarLoop]: trace histogram [35, 34, 32, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:44:32,409 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c701180-7fc2-4a4f-a6c6-ce768be1babc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-13 12:44:32,587 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c701180-7fc2-4a4f-a6c6-ce768be1babc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-13 12:44:32,588 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:44:32,588 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:44:32,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1213432935, now seen corresponding path program 4 times [2024-11-13 12:44:32,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:44:32,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075931487] [2024-11-13 12:44:32,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:44:32,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:44:32,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:44:34,338 INFO L134 CoverageAnalysis]: Checked inductivity of 1718 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 1190 trivial. 0 not checked. [2024-11-13 12:44:34,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:44:34,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075931487] [2024-11-13 12:44:34,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075931487] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:44:34,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647888640] [2024-11-13 12:44:34,339 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 12:44:34,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:44:34,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c701180-7fc2-4a4f-a6c6-ce768be1babc/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:44:34,341 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c701180-7fc2-4a4f-a6c6-ce768be1babc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:44:34,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c701180-7fc2-4a4f-a6c6-ce768be1babc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 12:44:34,553 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 12:44:34,553 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 12:44:34,561 INFO L255 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-13 12:44:34,565 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:44:34,671 INFO L134 CoverageAnalysis]: Checked inductivity of 1718 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 1190 trivial. 0 not checked. [2024-11-13 12:44:34,671 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:44:36,625 INFO L134 CoverageAnalysis]: Checked inductivity of 1718 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 1190 trivial. 0 not checked. [2024-11-13 12:44:36,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1647888640] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 12:44:36,626 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 12:44:36,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 69 [2024-11-13 12:44:36,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332703375] [2024-11-13 12:44:36,626 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 12:44:36,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2024-11-13 12:44:36,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:44:36,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2024-11-13 12:44:36,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2024-11-13 12:44:36,632 INFO L87 Difference]: Start difference. First operand 110 states and 111 transitions. Second operand has 69 states, 69 states have (on average 1.1304347826086956) internal successors, (78), 69 states have internal predecessors, (78), 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) [2024-11-13 12:44:37,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:44:37,400 INFO L93 Difference]: Finished difference Result 315 states and 382 transitions. [2024-11-13 12:44:37,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2024-11-13 12:44:37,401 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 1.1304347826086956) internal successors, (78), 69 states have internal predecessors, (78), 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 109 [2024-11-13 12:44:37,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:44:37,403 INFO L225 Difference]: With dead ends: 315 [2024-11-13 12:44:37,403 INFO L226 Difference]: Without dead ends: 240 [2024-11-13 12:44:37,411 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2024-11-13 12:44:37,412 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 280 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 188 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 12:44:37,412 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 79 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [188 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 12:44:37,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2024-11-13 12:44:37,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 144. [2024-11-13 12:44:37,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 143 states have (on average 1.013986013986014) internal successors, (145), 143 states have internal predecessors, (145), 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) [2024-11-13 12:44:37,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 145 transitions. [2024-11-13 12:44:37,445 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 145 transitions. Word has length 109 [2024-11-13 12:44:37,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:44:37,449 INFO L471 AbstractCegarLoop]: Abstraction has 144 states and 145 transitions. [2024-11-13 12:44:37,450 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 1.1304347826086956) internal successors, (78), 69 states have internal predecessors, (78), 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) [2024-11-13 12:44:37,450 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 145 transitions. [2024-11-13 12:44:37,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-13 12:44:37,451 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:44:37,451 INFO L215 NwaCegarLoop]: trace histogram [66, 35, 34, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:44:37,479 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c701180-7fc2-4a4f-a6c6-ce768be1babc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-13 12:44:37,652 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c701180-7fc2-4a4f-a6c6-ce768be1babc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-13 12:44:37,652 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:44:37,652 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:44:37,653 INFO L85 PathProgramCache]: Analyzing trace with hash -175190041, now seen corresponding path program 5 times [2024-11-13 12:44:37,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:44:37,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239603120] [2024-11-13 12:44:37,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:44:37,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:44:37,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:44:42,308 INFO L134 CoverageAnalysis]: Checked inductivity of 3401 backedges. 0 proven. 2211 refuted. 0 times theorem prover too weak. 1190 trivial. 0 not checked. [2024-11-13 12:44:42,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:44:42,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239603120] [2024-11-13 12:44:42,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239603120] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:44:42,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128398831] [2024-11-13 12:44:42,309 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 12:44:42,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:44:42,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c701180-7fc2-4a4f-a6c6-ce768be1babc/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:44:42,311 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c701180-7fc2-4a4f-a6c6-ce768be1babc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:44:42,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c701180-7fc2-4a4f-a6c6-ce768be1babc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 12:46:58,674 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 35 check-sat command(s) [2024-11-13 12:46:58,674 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 12:46:58,708 INFO L255 TraceCheckSpWp]: Trace formula consists of 813 conjuncts, 68 conjuncts are in the unsatisfiable core [2024-11-13 12:46:58,715 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:46:58,907 INFO L134 CoverageAnalysis]: Checked inductivity of 3401 backedges. 0 proven. 2211 refuted. 0 times theorem prover too weak. 1190 trivial. 0 not checked. [2024-11-13 12:46:58,907 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:47:04,672 INFO L134 CoverageAnalysis]: Checked inductivity of 3401 backedges. 0 proven. 2211 refuted. 0 times theorem prover too weak. 1190 trivial. 0 not checked. [2024-11-13 12:47:04,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1128398831] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 12:47:04,672 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 12:47:04,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69, 69] total 137 [2024-11-13 12:47:04,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126160146] [2024-11-13 12:47:04,672 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 12:47:04,673 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 137 states [2024-11-13 12:47:04,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:47:04,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 137 interpolants. [2024-11-13 12:47:04,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9316, Invalid=9316, Unknown=0, NotChecked=0, Total=18632 [2024-11-13 12:47:04,685 INFO L87 Difference]: Start difference. First operand 144 states and 145 transitions. Second operand has 137 states, 137 states have (on average 1.0656934306569343) internal successors, (146), 137 states have internal predecessors, (146), 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) [2024-11-13 12:47:08,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:47:08,301 INFO L93 Difference]: Finished difference Result 587 states and 756 transitions. [2024-11-13 12:47:08,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2024-11-13 12:47:08,301 INFO L78 Accepts]: Start accepts. Automaton has has 137 states, 137 states have (on average 1.0656934306569343) internal successors, (146), 137 states have internal predecessors, (146), 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 143 [2024-11-13 12:47:08,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:47:08,304 INFO L225 Difference]: With dead ends: 587 [2024-11-13 12:47:08,304 INFO L226 Difference]: Without dead ends: 512 [2024-11-13 12:47:08,308 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=9316, Invalid=9316, Unknown=0, NotChecked=0, Total=18632 [2024-11-13 12:47:08,309 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 1034 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 624 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1034 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 1042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 624 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-13 12:47:08,309 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1034 Valid, 129 Invalid, 1042 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [624 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-13 12:47:08,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2024-11-13 12:47:08,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 212. [2024-11-13 12:47:08,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 211 states have (on average 1.009478672985782) internal successors, (213), 211 states have internal predecessors, (213), 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) [2024-11-13 12:47:08,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 213 transitions. [2024-11-13 12:47:08,345 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 213 transitions. Word has length 143 [2024-11-13 12:47:08,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:47:08,346 INFO L471 AbstractCegarLoop]: Abstraction has 212 states and 213 transitions. [2024-11-13 12:47:08,346 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 137 states, 137 states have (on average 1.0656934306569343) internal successors, (146), 137 states have internal predecessors, (146), 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) [2024-11-13 12:47:08,346 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 213 transitions. [2024-11-13 12:47:08,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2024-11-13 12:47:08,348 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:47:08,348 INFO L215 NwaCegarLoop]: trace histogram [134, 35, 34, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:47:08,395 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c701180-7fc2-4a4f-a6c6-ce768be1babc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-13 12:47:08,556 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c701180-7fc2-4a4f-a6c6-ce768be1babc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:47:08,556 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:47:08,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:47:08,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1311033063, now seen corresponding path program 6 times [2024-11-13 12:47:08,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:47:08,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421117485] [2024-11-13 12:47:08,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:47:08,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:47:08,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:47:21,715 INFO L134 CoverageAnalysis]: Checked inductivity of 10235 backedges. 0 proven. 9045 refuted. 0 times theorem prover too weak. 1190 trivial. 0 not checked. [2024-11-13 12:47:21,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:47:21,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421117485] [2024-11-13 12:47:21,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421117485] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:47:21,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [459659931] [2024-11-13 12:47:21,716 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 12:47:21,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:47:21,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c701180-7fc2-4a4f-a6c6-ce768be1babc/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:47:21,719 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c701180-7fc2-4a4f-a6c6-ce768be1babc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:47:21,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c701180-7fc2-4a4f-a6c6-ce768be1babc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process