./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-29.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685df71c-cdbf-45c3-bacc-6a0467559349/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685df71c-cdbf-45c3-bacc-6a0467559349/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685df71c-cdbf-45c3-bacc-6a0467559349/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685df71c-cdbf-45c3-bacc-6a0467559349/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-29.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685df71c-cdbf-45c3-bacc-6a0467559349/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685df71c-cdbf-45c3-bacc-6a0467559349/bin/uautomizer-verify-84ZbGMXZE1 --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 2d1a08586e28489dc94d2285dea3402a5710056ff4819769698695dc05870e8f --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 07:09:27,750 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 07:09:27,805 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685df71c-cdbf-45c3-bacc-6a0467559349/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 07:09:27,810 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 07:09:27,810 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 07:09:27,831 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 07:09:27,831 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 07:09:27,831 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 07:09:27,832 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 07:09:27,832 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 07:09:27,832 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 07:09:27,832 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 07:09:27,832 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 07:09:27,832 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 07:09:27,833 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 07:09:27,833 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 07:09:27,833 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 07:09:27,833 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 07:09:27,833 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 07:09:27,833 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 07:09:27,833 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 07:09:27,833 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 07:09:27,833 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 07:09:27,833 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 07:09:27,833 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 07:09:27,833 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 07:09:27,834 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 07:09:27,834 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 07:09:27,834 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 07:09:27,834 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 07:09:27,834 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 07:09:27,834 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 07:09:27,834 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:09:27,834 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 07:09:27,834 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 07:09:27,834 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 07:09:27,834 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 07:09:27,834 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:09:27,835 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 07:09:27,835 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 07:09:27,835 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 07:09:27,835 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 07:09:27,835 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 07:09:27,835 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 07:09:27,835 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 07:09:27,835 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 07:09:27,835 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 07:09:27,835 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 07:09:27,835 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_685df71c-cdbf-45c3-bacc-6a0467559349/bin/uautomizer-verify-84ZbGMXZE1 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 -> 2d1a08586e28489dc94d2285dea3402a5710056ff4819769698695dc05870e8f [2024-12-02 07:09:28,051 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 07:09:28,059 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 07:09:28,062 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 07:09:28,063 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 07:09:28,063 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 07:09:28,064 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685df71c-cdbf-45c3-bacc-6a0467559349/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-29.i [2024-12-02 07:09:30,699 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685df71c-cdbf-45c3-bacc-6a0467559349/bin/uautomizer-verify-84ZbGMXZE1/data/526efa93d/2ecefbe895a547b1b0af68d5753c7df2/FLAGeb2263d49 [2024-12-02 07:09:30,962 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 07:09:30,963 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685df71c-cdbf-45c3-bacc-6a0467559349/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-29.i [2024-12-02 07:09:30,974 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685df71c-cdbf-45c3-bacc-6a0467559349/bin/uautomizer-verify-84ZbGMXZE1/data/526efa93d/2ecefbe895a547b1b0af68d5753c7df2/FLAGeb2263d49 [2024-12-02 07:09:30,989 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685df71c-cdbf-45c3-bacc-6a0467559349/bin/uautomizer-verify-84ZbGMXZE1/data/526efa93d/2ecefbe895a547b1b0af68d5753c7df2 [2024-12-02 07:09:30,991 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 07:09:30,993 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 07:09:30,994 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 07:09:30,994 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 07:09:30,999 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 07:09:31,000 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:09:30" (1/1) ... [2024-12-02 07:09:31,001 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4379eba2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:09:31, skipping insertion in model container [2024-12-02 07:09:31,001 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:09:30" (1/1) ... [2024-12-02 07:09:31,027 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 07:09:31,174 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_685df71c-cdbf-45c3-bacc-6a0467559349/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-29.i[916,929] [2024-12-02 07:09:31,282 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 07:09:31,296 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 07:09:31,308 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_685df71c-cdbf-45c3-bacc-6a0467559349/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-29.i[916,929] [2024-12-02 07:09:31,369 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 07:09:31,390 INFO L204 MainTranslator]: Completed translation [2024-12-02 07:09:31,390 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:09:31 WrapperNode [2024-12-02 07:09:31,391 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 07:09:31,392 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 07:09:31,392 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 07:09:31,392 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 07:09:31,399 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:09:31" (1/1) ... [2024-12-02 07:09:31,415 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:09:31" (1/1) ... [2024-12-02 07:09:31,472 INFO L138 Inliner]: procedures = 26, calls = 89, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 552 [2024-12-02 07:09:31,472 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 07:09:31,473 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 07:09:31,473 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 07:09:31,473 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 07:09:31,484 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:09:31" (1/1) ... [2024-12-02 07:09:31,484 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:09:31" (1/1) ... [2024-12-02 07:09:31,492 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:09:31" (1/1) ... [2024-12-02 07:09:31,520 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-12-02 07:09:31,520 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:09:31" (1/1) ... [2024-12-02 07:09:31,520 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:09:31" (1/1) ... [2024-12-02 07:09:31,539 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:09:31" (1/1) ... [2024-12-02 07:09:31,544 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:09:31" (1/1) ... [2024-12-02 07:09:31,550 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:09:31" (1/1) ... [2024-12-02 07:09:31,557 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:09:31" (1/1) ... [2024-12-02 07:09:31,562 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:09:31" (1/1) ... [2024-12-02 07:09:31,575 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 07:09:31,575 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 07:09:31,575 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 07:09:31,576 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 07:09:31,578 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:09:31" (1/1) ... [2024-12-02 07:09:31,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:09:31,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685df71c-cdbf-45c3-bacc-6a0467559349/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:09:31,611 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685df71c-cdbf-45c3-bacc-6a0467559349/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 07:09:31,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685df71c-cdbf-45c3-bacc-6a0467559349/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 07:09:31,642 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 07:09:31,642 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-02 07:09:31,642 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-02 07:09:31,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 07:09:31,642 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 07:09:31,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 07:09:31,761 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 07:09:31,762 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 07:09:32,627 INFO L? ?]: Removed 13 outVars from TransFormulas that were not future-live. [2024-12-02 07:09:32,627 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 07:09:32,644 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 07:09:32,644 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 07:09:32,645 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:09:32 BoogieIcfgContainer [2024-12-02 07:09:32,645 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 07:09:32,647 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 07:09:32,647 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 07:09:32,651 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 07:09:32,651 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 07:09:30" (1/3) ... [2024-12-02 07:09:32,652 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7331a363 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:09:32, skipping insertion in model container [2024-12-02 07:09:32,652 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:09:31" (2/3) ... [2024-12-02 07:09:32,653 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7331a363 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:09:32, skipping insertion in model container [2024-12-02 07:09:32,653 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:09:32" (3/3) ... [2024-12-02 07:09:32,654 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-29.i [2024-12-02 07:09:32,667 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 07:09:32,669 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-29.i that has 2 procedures, 229 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 07:09:32,727 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 07:09:32,764 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;@5683ff69, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 07:09:32,765 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 07:09:32,770 INFO L276 IsEmpty]: Start isEmpty. Operand has 229 states, 150 states have (on average 1.5533333333333332) internal successors, (233), 151 states have internal predecessors, (233), 76 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) [2024-12-02 07:09:32,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 472 [2024-12-02 07:09:32,799 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:09:32,800 INFO L218 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:09:32,801 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:09:32,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:09:32,808 INFO L85 PathProgramCache]: Analyzing trace with hash 915346865, now seen corresponding path program 1 times [2024-12-02 07:09:32,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:09:32,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574387910] [2024-12-02 07:09:32,817 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:09:32,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:09:32,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:09:33,373 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 150 refuted. 0 times theorem prover too weak. 11250 trivial. 0 not checked. [2024-12-02 07:09:33,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:09:33,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574387910] [2024-12-02 07:09:33,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574387910] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:09:33,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265340643] [2024-12-02 07:09:33,374 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:09:33,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:09:33,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685df71c-cdbf-45c3-bacc-6a0467559349/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:09:33,379 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685df71c-cdbf-45c3-bacc-6a0467559349/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:09:33,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685df71c-cdbf-45c3-bacc-6a0467559349/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 07:09:33,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:09:33,769 INFO L256 TraceCheckSpWp]: Trace formula consists of 1047 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 07:09:33,790 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:09:33,858 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 150 proven. 0 refuted. 0 times theorem prover too weak. 11250 trivial. 0 not checked. [2024-12-02 07:09:33,858 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:09:33,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [265340643] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:09:33,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 07:09:33,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-12-02 07:09:33,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470134935] [2024-12-02 07:09:33,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:09:33,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 07:09:33,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:09:33,891 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 07:09:33,892 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 07:09:33,895 INFO L87 Difference]: Start difference. First operand has 229 states, 150 states have (on average 1.5533333333333332) internal successors, (233), 151 states have internal predecessors, (233), 76 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) Second operand has 2 states, 2 states have (on average 48.0) internal successors, (96), 2 states have internal predecessors, (96), 2 states have call successors, (76), 2 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 2 states have call successors, (76) [2024-12-02 07:09:33,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:09:33,962 INFO L93 Difference]: Finished difference Result 451 states and 840 transitions. [2024-12-02 07:09:33,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 07:09:33,964 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 48.0) internal successors, (96), 2 states have internal predecessors, (96), 2 states have call successors, (76), 2 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 2 states have call successors, (76) Word has length 471 [2024-12-02 07:09:33,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:09:33,974 INFO L225 Difference]: With dead ends: 451 [2024-12-02 07:09:33,974 INFO L226 Difference]: Without dead ends: 225 [2024-12-02 07:09:33,980 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 472 GetRequests, 472 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 07:09:33,984 INFO L435 NwaCegarLoop]: 377 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:09:33,984 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:09:34,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2024-12-02 07:09:34,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2024-12-02 07:09:34,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 147 states have (on average 1.530612244897959) internal successors, (225), 147 states have internal predecessors, (225), 76 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) [2024-12-02 07:09:34,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 377 transitions. [2024-12-02 07:09:34,066 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 377 transitions. Word has length 471 [2024-12-02 07:09:34,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:09:34,067 INFO L471 AbstractCegarLoop]: Abstraction has 225 states and 377 transitions. [2024-12-02 07:09:34,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 48.0) internal successors, (96), 2 states have internal predecessors, (96), 2 states have call successors, (76), 2 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 2 states have call successors, (76) [2024-12-02 07:09:34,068 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 377 transitions. [2024-12-02 07:09:34,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 472 [2024-12-02 07:09:34,080 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:09:34,081 INFO L218 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:09:34,089 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685df71c-cdbf-45c3-bacc-6a0467559349/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 07:09:34,281 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685df71c-cdbf-45c3-bacc-6a0467559349/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:09:34,282 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:09:34,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:09:34,283 INFO L85 PathProgramCache]: Analyzing trace with hash 84695165, now seen corresponding path program 1 times [2024-12-02 07:09:34,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:09:34,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614432214] [2024-12-02 07:09:34,283 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:09:34,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:09:34,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:09:34,848 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11400 trivial. 0 not checked. [2024-12-02 07:09:34,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:09:34,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614432214] [2024-12-02 07:09:34,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614432214] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:09:34,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:09:34,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:09:34,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718806788] [2024-12-02 07:09:34,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:09:34,851 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:09:34,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:09:34,852 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:09:34,852 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:09:34,853 INFO L87 Difference]: Start difference. First operand 225 states and 377 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2024-12-02 07:09:34,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:09:34,950 INFO L93 Difference]: Finished difference Result 579 states and 974 transitions. [2024-12-02 07:09:34,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:09:34,951 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) Word has length 471 [2024-12-02 07:09:34,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:09:34,958 INFO L225 Difference]: With dead ends: 579 [2024-12-02 07:09:34,959 INFO L226 Difference]: Without dead ends: 357 [2024-12-02 07:09:34,960 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:09:34,961 INFO L435 NwaCegarLoop]: 480 mSDtfsCounter, 229 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 814 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:09:34,961 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 814 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:09:34,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2024-12-02 07:09:35,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 354. [2024-12-02 07:09:35,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 245 states have (on average 1.5591836734693878) internal successors, (382), 246 states have internal predecessors, (382), 106 states have call successors, (106), 2 states have call predecessors, (106), 2 states have return successors, (106), 105 states have call predecessors, (106), 106 states have call successors, (106) [2024-12-02 07:09:35,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 594 transitions. [2024-12-02 07:09:35,020 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 594 transitions. Word has length 471 [2024-12-02 07:09:35,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:09:35,023 INFO L471 AbstractCegarLoop]: Abstraction has 354 states and 594 transitions. [2024-12-02 07:09:35,023 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2024-12-02 07:09:35,023 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 594 transitions. [2024-12-02 07:09:35,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 472 [2024-12-02 07:09:35,029 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:09:35,029 INFO L218 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:09:35,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 07:09:35,030 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:09:35,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:09:35,030 INFO L85 PathProgramCache]: Analyzing trace with hash 332841659, now seen corresponding path program 1 times [2024-12-02 07:09:35,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:09:35,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692019289] [2024-12-02 07:09:35,031 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:09:35,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:09:35,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:09:35,369 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11400 trivial. 0 not checked. [2024-12-02 07:09:35,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:09:35,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692019289] [2024-12-02 07:09:35,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692019289] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:09:35,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:09:35,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:09:35,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076972867] [2024-12-02 07:09:35,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:09:35,371 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:09:35,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:09:35,372 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:09:35,373 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:09:35,373 INFO L87 Difference]: Start difference. First operand 354 states and 594 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2024-12-02 07:09:35,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:09:35,447 INFO L93 Difference]: Finished difference Result 716 states and 1198 transitions. [2024-12-02 07:09:35,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:09:35,447 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) Word has length 471 [2024-12-02 07:09:35,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:09:35,453 INFO L225 Difference]: With dead ends: 716 [2024-12-02 07:09:35,453 INFO L226 Difference]: Without dead ends: 365 [2024-12-02 07:09:35,454 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:09:35,455 INFO L435 NwaCegarLoop]: 454 mSDtfsCounter, 195 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 816 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:09:35,455 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 816 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:09:35,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2024-12-02 07:09:35,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 296. [2024-12-02 07:09:35,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 217 states have (on average 1.5806451612903225) internal successors, (343), 217 states have internal predecessors, (343), 76 states have call successors, (76), 2 states have call predecessors, (76), 2 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) [2024-12-02 07:09:35,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 495 transitions. [2024-12-02 07:09:35,483 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 495 transitions. Word has length 471 [2024-12-02 07:09:35,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:09:35,484 INFO L471 AbstractCegarLoop]: Abstraction has 296 states and 495 transitions. [2024-12-02 07:09:35,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2024-12-02 07:09:35,485 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 495 transitions. [2024-12-02 07:09:35,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 472 [2024-12-02 07:09:35,491 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:09:35,491 INFO L218 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:09:35,491 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 07:09:35,491 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:09:35,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:09:35,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1255506243, now seen corresponding path program 1 times [2024-12-02 07:09:35,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:09:35,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584840751] [2024-12-02 07:09:35,492 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:09:35,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:09:35,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:09:35,717 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11400 trivial. 0 not checked. [2024-12-02 07:09:35,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:09:35,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584840751] [2024-12-02 07:09:35,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584840751] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:09:35,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:09:35,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:09:35,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590360779] [2024-12-02 07:09:35,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:09:35,719 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:09:35,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:09:35,719 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:09:35,720 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:09:35,720 INFO L87 Difference]: Start difference. First operand 296 states and 495 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2024-12-02 07:09:35,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:09:35,772 INFO L93 Difference]: Finished difference Result 718 states and 1190 transitions. [2024-12-02 07:09:35,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:09:35,773 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) Word has length 471 [2024-12-02 07:09:35,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:09:35,776 INFO L225 Difference]: With dead ends: 718 [2024-12-02 07:09:35,776 INFO L226 Difference]: Without dead ends: 425 [2024-12-02 07:09:35,777 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:09:35,778 INFO L435 NwaCegarLoop]: 524 mSDtfsCounter, 191 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 892 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:09:35,779 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 892 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:09:35,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2024-12-02 07:09:35,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 422. [2024-12-02 07:09:35,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 285 states have (on average 1.5087719298245614) internal successors, (430), 286 states have internal predecessors, (430), 132 states have call successors, (132), 4 states have call predecessors, (132), 4 states have return successors, (132), 131 states have call predecessors, (132), 132 states have call successors, (132) [2024-12-02 07:09:35,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 694 transitions. [2024-12-02 07:09:35,808 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 694 transitions. Word has length 471 [2024-12-02 07:09:35,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:09:35,809 INFO L471 AbstractCegarLoop]: Abstraction has 422 states and 694 transitions. [2024-12-02 07:09:35,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2024-12-02 07:09:35,810 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 694 transitions. [2024-12-02 07:09:35,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 472 [2024-12-02 07:09:35,813 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:09:35,813 INFO L218 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:09:35,813 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 07:09:35,814 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:09:35,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:09:35,814 INFO L85 PathProgramCache]: Analyzing trace with hash 24357435, now seen corresponding path program 1 times [2024-12-02 07:09:35,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:09:35,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515730665] [2024-12-02 07:09:35,814 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:09:35,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:09:35,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:09:36,292 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11400 trivial. 0 not checked. [2024-12-02 07:09:36,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:09:36,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515730665] [2024-12-02 07:09:36,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515730665] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:09:36,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:09:36,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 07:09:36,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18171895] [2024-12-02 07:09:36,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:09:36,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 07:09:36,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:09:36,294 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 07:09:36,294 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-12-02 07:09:36,295 INFO L87 Difference]: Start difference. First operand 422 states and 694 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2024-12-02 07:09:38,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:09:38,148 INFO L93 Difference]: Finished difference Result 2140 states and 3487 transitions. [2024-12-02 07:09:38,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 07:09:38,149 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) Word has length 471 [2024-12-02 07:09:38,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:09:38,158 INFO L225 Difference]: With dead ends: 2140 [2024-12-02 07:09:38,158 INFO L226 Difference]: Without dead ends: 1721 [2024-12-02 07:09:38,160 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2024-12-02 07:09:38,161 INFO L435 NwaCegarLoop]: 471 mSDtfsCounter, 1170 mSDsluCounter, 1388 mSDsCounter, 0 mSdLazyCounter, 933 mSolverCounterSat, 542 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1170 SdHoareTripleChecker+Valid, 1859 SdHoareTripleChecker+Invalid, 1475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 542 IncrementalHoareTripleChecker+Valid, 933 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-12-02 07:09:38,161 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1170 Valid, 1859 Invalid, 1475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [542 Valid, 933 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-12-02 07:09:38,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1721 states. [2024-12-02 07:09:38,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1721 to 1465. [2024-12-02 07:09:38,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1465 states, 992 states have (on average 1.4858870967741935) internal successors, (1474), 998 states have internal predecessors, (1474), 454 states have call successors, (454), 18 states have call predecessors, (454), 18 states have return successors, (454), 448 states have call predecessors, (454), 454 states have call successors, (454) [2024-12-02 07:09:38,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1465 states to 1465 states and 2382 transitions. [2024-12-02 07:09:38,273 INFO L78 Accepts]: Start accepts. Automaton has 1465 states and 2382 transitions. Word has length 471 [2024-12-02 07:09:38,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:09:38,274 INFO L471 AbstractCegarLoop]: Abstraction has 1465 states and 2382 transitions. [2024-12-02 07:09:38,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2024-12-02 07:09:38,274 INFO L276 IsEmpty]: Start isEmpty. Operand 1465 states and 2382 transitions. [2024-12-02 07:09:38,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 472 [2024-12-02 07:09:38,277 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:09:38,277 INFO L218 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:09:38,277 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 07:09:38,277 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:09:38,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:09:38,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1664586307, now seen corresponding path program 1 times [2024-12-02 07:09:38,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:09:38,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998588796] [2024-12-02 07:09:38,278 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:09:38,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:09:38,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:09:38,648 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11400 trivial. 0 not checked. [2024-12-02 07:09:38,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:09:38,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998588796] [2024-12-02 07:09:38,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998588796] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:09:38,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:09:38,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:09:38,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616075590] [2024-12-02 07:09:38,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:09:38,649 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:09:38,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:09:38,650 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:09:38,650 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:09:38,651 INFO L87 Difference]: Start difference. First operand 1465 states and 2382 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2024-12-02 07:09:38,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:09:38,831 INFO L93 Difference]: Finished difference Result 4389 states and 7140 transitions. [2024-12-02 07:09:38,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:09:38,832 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) Word has length 471 [2024-12-02 07:09:38,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:09:38,846 INFO L225 Difference]: With dead ends: 4389 [2024-12-02 07:09:38,846 INFO L226 Difference]: Without dead ends: 2927 [2024-12-02 07:09:38,850 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:09:38,850 INFO L435 NwaCegarLoop]: 375 mSDtfsCounter, 214 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 745 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:09:38,850 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 745 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:09:38,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2927 states. [2024-12-02 07:09:39,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2927 to 2925. [2024-12-02 07:09:39,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2925 states, 1980 states have (on average 1.4828282828282828) internal successors, (2936), 1992 states have internal predecessors, (2936), 908 states have call successors, (908), 36 states have call predecessors, (908), 36 states have return successors, (908), 896 states have call predecessors, (908), 908 states have call successors, (908) [2024-12-02 07:09:39,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2925 states to 2925 states and 4752 transitions. [2024-12-02 07:09:39,049 INFO L78 Accepts]: Start accepts. Automaton has 2925 states and 4752 transitions. Word has length 471 [2024-12-02 07:09:39,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:09:39,049 INFO L471 AbstractCegarLoop]: Abstraction has 2925 states and 4752 transitions. [2024-12-02 07:09:39,050 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2024-12-02 07:09:39,050 INFO L276 IsEmpty]: Start isEmpty. Operand 2925 states and 4752 transitions. [2024-12-02 07:09:39,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 472 [2024-12-02 07:09:39,052 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:09:39,053 INFO L218 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:09:39,053 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 07:09:39,053 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:09:39,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:09:39,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1607328005, now seen corresponding path program 1 times [2024-12-02 07:09:39,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:09:39,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716009391] [2024-12-02 07:09:39,053 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:09:39,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:09:39,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:09:39,565 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11400 trivial. 0 not checked. [2024-12-02 07:09:39,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:09:39,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716009391] [2024-12-02 07:09:39,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716009391] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:09:39,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:09:39,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 07:09:39,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030734870] [2024-12-02 07:09:39,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:09:39,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 07:09:39,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:09:39,567 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 07:09:39,567 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 07:09:39,567 INFO L87 Difference]: Start difference. First operand 2925 states and 4752 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2024-12-02 07:09:43,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:09:43,095 INFO L93 Difference]: Finished difference Result 19829 states and 32162 transitions. [2024-12-02 07:09:43,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 07:09:43,096 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) Word has length 471 [2024-12-02 07:09:43,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:09:43,197 INFO L225 Difference]: With dead ends: 19829 [2024-12-02 07:09:43,197 INFO L226 Difference]: Without dead ends: 16907 [2024-12-02 07:09:43,213 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2024-12-02 07:09:43,214 INFO L435 NwaCegarLoop]: 467 mSDtfsCounter, 2066 mSDsluCounter, 1332 mSDsCounter, 0 mSdLazyCounter, 858 mSolverCounterSat, 881 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2066 SdHoareTripleChecker+Valid, 1799 SdHoareTripleChecker+Invalid, 1739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 881 IncrementalHoareTripleChecker+Valid, 858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-12-02 07:09:43,214 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2066 Valid, 1799 Invalid, 1739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [881 Valid, 858 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-12-02 07:09:43,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16907 states. [2024-12-02 07:09:44,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16907 to 6953. [2024-12-02 07:09:44,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6953 states, 4884 states have (on average 1.5094185094185095) internal successors, (7372), 4912 states have internal predecessors, (7372), 1988 states have call successors, (1988), 80 states have call predecessors, (1988), 80 states have return successors, (1988), 1960 states have call predecessors, (1988), 1988 states have call successors, (1988) [2024-12-02 07:09:44,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6953 states to 6953 states and 11348 transitions. [2024-12-02 07:09:44,402 INFO L78 Accepts]: Start accepts. Automaton has 6953 states and 11348 transitions. Word has length 471 [2024-12-02 07:09:44,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:09:44,403 INFO L471 AbstractCegarLoop]: Abstraction has 6953 states and 11348 transitions. [2024-12-02 07:09:44,403 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2024-12-02 07:09:44,403 INFO L276 IsEmpty]: Start isEmpty. Operand 6953 states and 11348 transitions. [2024-12-02 07:09:44,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 472 [2024-12-02 07:09:44,412 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:09:44,413 INFO L218 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:09:44,413 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 07:09:44,413 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:09:44,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:09:44,414 INFO L85 PathProgramCache]: Analyzing trace with hash 300470455, now seen corresponding path program 1 times [2024-12-02 07:09:44,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:09:44,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936558135] [2024-12-02 07:09:44,414 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:09:44,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:09:44,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:09:44,801 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11400 trivial. 0 not checked. [2024-12-02 07:09:44,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:09:44,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936558135] [2024-12-02 07:09:44,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936558135] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:09:44,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:09:44,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 07:09:44,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061866468] [2024-12-02 07:09:44,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:09:44,802 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 07:09:44,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:09:44,803 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 07:09:44,803 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 07:09:44,803 INFO L87 Difference]: Start difference. First operand 6953 states and 11348 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2024-12-02 07:09:48,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:09:48,734 INFO L93 Difference]: Finished difference Result 27997 states and 45467 transitions. [2024-12-02 07:09:48,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 07:09:48,735 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) Word has length 471 [2024-12-02 07:09:48,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:09:48,863 INFO L225 Difference]: With dead ends: 27997 [2024-12-02 07:09:48,863 INFO L226 Difference]: Without dead ends: 21047 [2024-12-02 07:09:48,893 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-12-02 07:09:48,894 INFO L435 NwaCegarLoop]: 597 mSDtfsCounter, 1930 mSDsluCounter, 1529 mSDsCounter, 0 mSdLazyCounter, 1091 mSolverCounterSat, 1115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1930 SdHoareTripleChecker+Valid, 2126 SdHoareTripleChecker+Invalid, 2206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1115 IncrementalHoareTripleChecker+Valid, 1091 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-12-02 07:09:48,894 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1930 Valid, 2126 Invalid, 2206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1115 Valid, 1091 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-12-02 07:09:48,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21047 states. [2024-12-02 07:09:50,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21047 to 12791. [2024-12-02 07:09:50,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12791 states, 8806 states have (on average 1.4873949579831933) internal successors, (13098), 8866 states have internal predecessors, (13098), 3828 states have call successors, (3828), 156 states have call predecessors, (3828), 156 states have return successors, (3828), 3768 states have call predecessors, (3828), 3828 states have call successors, (3828) [2024-12-02 07:09:50,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12791 states to 12791 states and 20754 transitions. [2024-12-02 07:09:50,538 INFO L78 Accepts]: Start accepts. Automaton has 12791 states and 20754 transitions. Word has length 471 [2024-12-02 07:09:50,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:09:50,539 INFO L471 AbstractCegarLoop]: Abstraction has 12791 states and 20754 transitions. [2024-12-02 07:09:50,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2024-12-02 07:09:50,541 INFO L276 IsEmpty]: Start isEmpty. Operand 12791 states and 20754 transitions. [2024-12-02 07:09:50,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 472 [2024-12-02 07:09:50,548 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:09:50,549 INFO L218 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:09:50,549 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 07:09:50,549 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:09:50,549 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:09:50,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1388473287, now seen corresponding path program 1 times [2024-12-02 07:09:50,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:09:50,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362702544] [2024-12-02 07:09:50,550 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:09:50,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:09:50,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:09:51,018 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11400 trivial. 0 not checked. [2024-12-02 07:09:51,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:09:51,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362702544] [2024-12-02 07:09:51,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362702544] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:09:51,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:09:51,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 07:09:51,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020822832] [2024-12-02 07:09:51,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:09:51,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 07:09:51,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:09:51,020 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 07:09:51,020 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 07:09:51,021 INFO L87 Difference]: Start difference. First operand 12791 states and 20754 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2024-12-02 07:09:53,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:09:53,402 INFO L93 Difference]: Finished difference Result 43157 states and 70201 transitions. [2024-12-02 07:09:53,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 07:09:53,402 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) Word has length 471 [2024-12-02 07:09:53,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:09:53,521 INFO L225 Difference]: With dead ends: 43157 [2024-12-02 07:09:53,521 INFO L226 Difference]: Without dead ends: 30369 [2024-12-02 07:09:53,562 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 07:09:53,563 INFO L435 NwaCegarLoop]: 624 mSDtfsCounter, 605 mSDsluCounter, 818 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 605 SdHoareTripleChecker+Valid, 1442 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 07:09:53,563 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [605 Valid, 1442 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 07:09:53,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30369 states. [2024-12-02 07:09:55,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30369 to 30341. [2024-12-02 07:09:55,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30341 states, 21388 states have (on average 1.4944828876005236) internal successors, (31964), 21532 states have internal predecessors, (31964), 8592 states have call successors, (8592), 360 states have call predecessors, (8592), 360 states have return successors, (8592), 8448 states have call predecessors, (8592), 8592 states have call successors, (8592) [2024-12-02 07:09:55,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30341 states to 30341 states and 49148 transitions. [2024-12-02 07:09:55,791 INFO L78 Accepts]: Start accepts. Automaton has 30341 states and 49148 transitions. Word has length 471 [2024-12-02 07:09:55,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:09:55,791 INFO L471 AbstractCegarLoop]: Abstraction has 30341 states and 49148 transitions. [2024-12-02 07:09:55,791 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2024-12-02 07:09:55,791 INFO L276 IsEmpty]: Start isEmpty. Operand 30341 states and 49148 transitions. [2024-12-02 07:09:55,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 472 [2024-12-02 07:09:55,802 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:09:55,803 INFO L218 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:09:55,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 07:09:55,803 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:09:55,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:09:55,803 INFO L85 PathProgramCache]: Analyzing trace with hash -965771461, now seen corresponding path program 1 times [2024-12-02 07:09:55,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:09:55,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478765886] [2024-12-02 07:09:55,804 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:09:55,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:09:55,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:09:56,394 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 69 proven. 156 refuted. 0 times theorem prover too weak. 11175 trivial. 0 not checked. [2024-12-02 07:09:56,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:09:56,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478765886] [2024-12-02 07:09:56,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478765886] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:09:56,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1460479266] [2024-12-02 07:09:56,395 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:09:56,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:09:56,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685df71c-cdbf-45c3-bacc-6a0467559349/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:09:56,397 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685df71c-cdbf-45c3-bacc-6a0467559349/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:09:56,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685df71c-cdbf-45c3-bacc-6a0467559349/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 07:09:56,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:09:56,671 INFO L256 TraceCheckSpWp]: Trace formula consists of 1041 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-12-02 07:09:56,683 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:09:57,922 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 5393 proven. 156 refuted. 0 times theorem prover too weak. 5851 trivial. 0 not checked. [2024-12-02 07:09:57,923 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:09:58,486 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 69 proven. 156 refuted. 0 times theorem prover too weak. 11175 trivial. 0 not checked. [2024-12-02 07:09:58,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1460479266] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:09:58,486 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:09:58,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-12-02 07:09:58,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693482220] [2024-12-02 07:09:58,487 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:09:58,488 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 07:09:58,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:09:58,489 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 07:09:58,489 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2024-12-02 07:09:58,490 INFO L87 Difference]: Start difference. First operand 30341 states and 49148 transitions. Second operand has 13 states, 13 states have (on average 19.153846153846153) internal successors, (249), 13 states have internal predecessors, (249), 6 states have call successors, (212), 3 states have call predecessors, (212), 6 states have return successors, (212), 6 states have call predecessors, (212), 6 states have call successors, (212) [2024-12-02 07:10:01,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:10:01,126 INFO L93 Difference]: Finished difference Result 62071 states and 99517 transitions. [2024-12-02 07:10:01,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 07:10:01,126 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 19.153846153846153) internal successors, (249), 13 states have internal predecessors, (249), 6 states have call successors, (212), 3 states have call predecessors, (212), 6 states have return successors, (212), 6 states have call predecessors, (212), 6 states have call successors, (212) Word has length 471 [2024-12-02 07:10:01,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:10:01,213 INFO L225 Difference]: With dead ends: 62071 [2024-12-02 07:10:01,213 INFO L226 Difference]: Without dead ends: 31733 [2024-12-02 07:10:01,276 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 949 GetRequests, 935 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=155, Unknown=0, NotChecked=0, Total=240 [2024-12-02 07:10:01,276 INFO L435 NwaCegarLoop]: 291 mSDtfsCounter, 478 mSDsluCounter, 433 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 501 SdHoareTripleChecker+Valid, 724 SdHoareTripleChecker+Invalid, 491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 07:10:01,277 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [501 Valid, 724 Invalid, 491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 07:10:01,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31733 states. [2024-12-02 07:10:03,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31733 to 31013. [2024-12-02 07:10:03,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31013 states, 21892 states have (on average 1.4754248127169742) internal successors, (32300), 22036 states have internal predecessors, (32300), 8592 states have call successors, (8592), 528 states have call predecessors, (8592), 528 states have return successors, (8592), 8448 states have call predecessors, (8592), 8592 states have call successors, (8592) [2024-12-02 07:10:03,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31013 states to 31013 states and 49484 transitions. [2024-12-02 07:10:03,586 INFO L78 Accepts]: Start accepts. Automaton has 31013 states and 49484 transitions. Word has length 471 [2024-12-02 07:10:03,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:10:03,587 INFO L471 AbstractCegarLoop]: Abstraction has 31013 states and 49484 transitions. [2024-12-02 07:10:03,587 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 19.153846153846153) internal successors, (249), 13 states have internal predecessors, (249), 6 states have call successors, (212), 3 states have call predecessors, (212), 6 states have return successors, (212), 6 states have call predecessors, (212), 6 states have call successors, (212) [2024-12-02 07:10:03,587 INFO L276 IsEmpty]: Start isEmpty. Operand 31013 states and 49484 transitions. [2024-12-02 07:10:03,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 473 [2024-12-02 07:10:03,593 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:10:03,593 INFO L218 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:10:03,603 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685df71c-cdbf-45c3-bacc-6a0467559349/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 07:10:03,794 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685df71c-cdbf-45c3-bacc-6a0467559349/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:10:03,794 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:10:03,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:10:03,795 INFO L85 PathProgramCache]: Analyzing trace with hash -104745010, now seen corresponding path program 1 times [2024-12-02 07:10:03,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:10:03,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250601545] [2024-12-02 07:10:03,795 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:10:03,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:10:03,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:10:04,977 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 138 proven. 87 refuted. 0 times theorem prover too weak. 11175 trivial. 0 not checked. [2024-12-02 07:10:04,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:10:04,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250601545] [2024-12-02 07:10:04,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250601545] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:10:04,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [384575745] [2024-12-02 07:10:04,978 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:10:04,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:10:04,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685df71c-cdbf-45c3-bacc-6a0467559349/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:10:04,982 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685df71c-cdbf-45c3-bacc-6a0467559349/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:10:04,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685df71c-cdbf-45c3-bacc-6a0467559349/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 07:10:05,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:10:05,373 INFO L256 TraceCheckSpWp]: Trace formula consists of 1039 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-12-02 07:10:05,382 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:10:06,072 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 5503 proven. 87 refuted. 0 times theorem prover too weak. 5810 trivial. 0 not checked. [2024-12-02 07:10:06,072 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:10:06,715 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 138 proven. 87 refuted. 0 times theorem prover too weak. 11175 trivial. 0 not checked. [2024-12-02 07:10:06,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [384575745] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:10:06,716 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:10:06,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 11] total 26 [2024-12-02 07:10:06,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109658468] [2024-12-02 07:10:06,716 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:10:06,717 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-12-02 07:10:06,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:10:06,717 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-12-02 07:10:06,717 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=534, Unknown=0, NotChecked=0, Total=650 [2024-12-02 07:10:06,718 INFO L87 Difference]: Start difference. First operand 31013 states and 49484 transitions. Second operand has 26 states, 26 states have (on average 6.3076923076923075) internal successors, (164), 26 states have internal predecessors, (164), 3 states have call successors, (134), 2 states have call predecessors, (134), 4 states have return successors, (135), 3 states have call predecessors, (135), 3 states have call successors, (135) [2024-12-02 07:10:49,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:10:49,631 INFO L93 Difference]: Finished difference Result 284962 states and 438999 transitions. [2024-12-02 07:10:49,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2024-12-02 07:10:49,632 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 6.3076923076923075) internal successors, (164), 26 states have internal predecessors, (164), 3 states have call successors, (134), 2 states have call predecessors, (134), 4 states have return successors, (135), 3 states have call predecessors, (135), 3 states have call successors, (135) Word has length 472 [2024-12-02 07:10:49,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:10:50,478 INFO L225 Difference]: With dead ends: 284962 [2024-12-02 07:10:50,478 INFO L226 Difference]: Without dead ends: 252128 [2024-12-02 07:10:50,611 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1064 GetRequests, 952 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4152 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=2917, Invalid=9965, Unknown=0, NotChecked=0, Total=12882 [2024-12-02 07:10:50,612 INFO L435 NwaCegarLoop]: 740 mSDtfsCounter, 6168 mSDsluCounter, 6564 mSDsCounter, 0 mSdLazyCounter, 7430 mSolverCounterSat, 4277 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6213 SdHoareTripleChecker+Valid, 7304 SdHoareTripleChecker+Invalid, 11707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4277 IncrementalHoareTripleChecker+Valid, 7430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2024-12-02 07:10:50,612 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6213 Valid, 7304 Invalid, 11707 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4277 Valid, 7430 Invalid, 0 Unknown, 0 Unchecked, 9.9s Time] [2024-12-02 07:10:50,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252128 states. [2024-12-02 07:11:02,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252128 to 78003. [2024-12-02 07:11:02,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78003 states, 56018 states have (on average 1.4787032739476598) internal successors, (82834), 56450 states have internal predecessors, (82834), 20432 states have call successors, (20432), 1552 states have call predecessors, (20432), 1552 states have return successors, (20432), 20000 states have call predecessors, (20432), 20432 states have call successors, (20432) [2024-12-02 07:11:03,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78003 states to 78003 states and 123698 transitions. [2024-12-02 07:11:03,319 INFO L78 Accepts]: Start accepts. Automaton has 78003 states and 123698 transitions. Word has length 472 [2024-12-02 07:11:03,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:11:03,320 INFO L471 AbstractCegarLoop]: Abstraction has 78003 states and 123698 transitions. [2024-12-02 07:11:03,320 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 6.3076923076923075) internal successors, (164), 26 states have internal predecessors, (164), 3 states have call successors, (134), 2 states have call predecessors, (134), 4 states have return successors, (135), 3 states have call predecessors, (135), 3 states have call successors, (135) [2024-12-02 07:11:03,320 INFO L276 IsEmpty]: Start isEmpty. Operand 78003 states and 123698 transitions. [2024-12-02 07:11:03,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 473 [2024-12-02 07:11:03,338 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:11:03,338 INFO L218 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:11:03,346 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685df71c-cdbf-45c3-bacc-6a0467559349/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 07:11:03,538 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685df71c-cdbf-45c3-bacc-6a0467559349/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:11:03,539 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:11:03,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:11:03,539 INFO L85 PathProgramCache]: Analyzing trace with hash -144673842, now seen corresponding path program 1 times [2024-12-02 07:11:03,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:11:03,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669113942] [2024-12-02 07:11:03,540 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:11:03,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:11:03,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:11:03,699 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11400 trivial. 0 not checked. [2024-12-02 07:11:03,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:11:03,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669113942] [2024-12-02 07:11:03,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669113942] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:11:03,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:11:03,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 07:11:03,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844097702] [2024-12-02 07:11:03,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:11:03,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 07:11:03,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:11:03,701 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 07:11:03,701 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 07:11:03,701 INFO L87 Difference]: Start difference. First operand 78003 states and 123698 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2024-12-02 07:11:20,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:11:20,134 INFO L93 Difference]: Finished difference Result 222563 states and 352387 transitions. [2024-12-02 07:11:20,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 07:11:20,135 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) Word has length 472 [2024-12-02 07:11:20,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:11:20,602 INFO L225 Difference]: With dead ends: 222563 [2024-12-02 07:11:20,602 INFO L226 Difference]: Without dead ends: 144563 [2024-12-02 07:11:20,763 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 07:11:20,763 INFO L435 NwaCegarLoop]: 854 mSDtfsCounter, 488 mSDsluCounter, 710 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 488 SdHoareTripleChecker+Valid, 1564 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 07:11:20,764 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [488 Valid, 1564 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 07:11:20,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144563 states. [2024-12-02 07:11:39,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144563 to 144199. [2024-12-02 07:11:39,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144199 states, 101478 states have (on average 1.4634304972506356) internal successors, (148506), 102326 states have internal predecessors, (148506), 39712 states have call successors, (39712), 3008 states have call predecessors, (39712), 3008 states have return successors, (39712), 38864 states have call predecessors, (39712), 39712 states have call successors, (39712) [2024-12-02 07:11:39,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144199 states to 144199 states and 227930 transitions. [2024-12-02 07:11:39,902 INFO L78 Accepts]: Start accepts. Automaton has 144199 states and 227930 transitions. Word has length 472 [2024-12-02 07:11:39,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:11:39,902 INFO L471 AbstractCegarLoop]: Abstraction has 144199 states and 227930 transitions. [2024-12-02 07:11:39,902 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2024-12-02 07:11:39,902 INFO L276 IsEmpty]: Start isEmpty. Operand 144199 states and 227930 transitions. [2024-12-02 07:11:39,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 473 [2024-12-02 07:11:39,920 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:11:39,921 INFO L218 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:11:39,921 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-02 07:11:39,921 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:11:39,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:11:39,922 INFO L85 PathProgramCache]: Analyzing trace with hash 2124340046, now seen corresponding path program 1 times [2024-12-02 07:11:39,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:11:39,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841395610] [2024-12-02 07:11:39,922 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:11:39,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:11:39,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:11:40,344 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11400 trivial. 0 not checked. [2024-12-02 07:11:40,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:11:40,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841395610] [2024-12-02 07:11:40,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841395610] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:11:40,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:11:40,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 07:11:40,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135326632] [2024-12-02 07:11:40,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:11:40,345 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 07:11:40,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:11:40,346 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 07:11:40,346 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 07:11:40,346 INFO L87 Difference]: Start difference. First operand 144199 states and 227930 transitions. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2024-12-02 07:12:38,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:12:38,333 INFO L93 Difference]: Finished difference Result 536828 states and 838647 transitions. [2024-12-02 07:12:38,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 07:12:38,334 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) Word has length 472 [2024-12-02 07:12:38,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:12:39,802 INFO L225 Difference]: With dead ends: 536828 [2024-12-02 07:12:39,802 INFO L226 Difference]: Without dead ends: 389944 [2024-12-02 07:12:40,107 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-12-02 07:12:40,108 INFO L435 NwaCegarLoop]: 582 mSDtfsCounter, 935 mSDsluCounter, 1705 mSDsCounter, 0 mSdLazyCounter, 680 mSolverCounterSat, 402 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 935 SdHoareTripleChecker+Valid, 2287 SdHoareTripleChecker+Invalid, 1082 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 402 IncrementalHoareTripleChecker+Valid, 680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-12-02 07:12:40,108 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [935 Valid, 2287 Invalid, 1082 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [402 Valid, 680 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-12-02 07:12:40,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389944 states. [2024-12-02 07:13:07,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389944 to 169771. [2024-12-02 07:13:08,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169771 states, 123938 states have (on average 1.4850005647985283) internal successors, (184048), 124874 states have internal predecessors, (184048), 42376 states have call successors, (42376), 3456 states have call predecessors, (42376), 3456 states have return successors, (42376), 41440 states have call predecessors, (42376), 42376 states have call successors, (42376) [2024-12-02 07:13:08,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169771 states to 169771 states and 268800 transitions. [2024-12-02 07:13:08,911 INFO L78 Accepts]: Start accepts. Automaton has 169771 states and 268800 transitions. Word has length 472 [2024-12-02 07:13:08,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:13:08,912 INFO L471 AbstractCegarLoop]: Abstraction has 169771 states and 268800 transitions. [2024-12-02 07:13:08,912 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2024-12-02 07:13:08,912 INFO L276 IsEmpty]: Start isEmpty. Operand 169771 states and 268800 transitions. [2024-12-02 07:13:08,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 473 [2024-12-02 07:13:08,932 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:13:08,933 INFO L218 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:13:08,933 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 07:13:08,933 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:13:08,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:13:08,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1136550162, now seen corresponding path program 1 times [2024-12-02 07:13:08,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:13:08,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688022565] [2024-12-02 07:13:08,933 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:13:08,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:13:08,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:13:09,118 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11400 trivial. 0 not checked. [2024-12-02 07:13:09,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:13:09,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688022565] [2024-12-02 07:13:09,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688022565] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:13:09,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:13:09,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 07:13:09,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746525195] [2024-12-02 07:13:09,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:13:09,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 07:13:09,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:13:09,120 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 07:13:09,121 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-12-02 07:13:09,121 INFO L87 Difference]: Start difference. First operand 169771 states and 268800 transitions. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 2 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 2 states have call predecessors, (76), 2 states have call successors, (76) [2024-12-02 07:13:47,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:13:47,004 INFO L93 Difference]: Finished difference Result 366254 states and 578687 transitions. [2024-12-02 07:13:47,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 07:13:47,004 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 2 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 2 states have call predecessors, (76), 2 states have call successors, (76) Word has length 472 [2024-12-02 07:13:47,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:13:47,707 INFO L225 Difference]: With dead ends: 366254 [2024-12-02 07:13:47,707 INFO L226 Difference]: Without dead ends: 251298 [2024-12-02 07:13:47,916 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-12-02 07:13:47,916 INFO L435 NwaCegarLoop]: 577 mSDtfsCounter, 942 mSDsluCounter, 1265 mSDsCounter, 0 mSdLazyCounter, 586 mSolverCounterSat, 424 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 942 SdHoareTripleChecker+Valid, 1842 SdHoareTripleChecker+Invalid, 1010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 424 IncrementalHoareTripleChecker+Valid, 586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-12-02 07:13:47,916 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [942 Valid, 1842 Invalid, 1010 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [424 Valid, 586 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-12-02 07:13:48,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251298 states. [2024-12-02 07:14:20,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251298 to 208459. [2024-12-02 07:14:21,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208459 states, 151240 states have (on average 1.4775588468659084) internal successors, (223466), 152409 states have internal predecessors, (223466), 52876 states have call successors, (52876), 4342 states have call predecessors, (52876), 4342 states have return successors, (52876), 51707 states have call predecessors, (52876), 52876 states have call successors, (52876) [2024-12-02 07:14:21,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208459 states to 208459 states and 329218 transitions. [2024-12-02 07:14:21,790 INFO L78 Accepts]: Start accepts. Automaton has 208459 states and 329218 transitions. Word has length 472 [2024-12-02 07:14:21,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:14:21,791 INFO L471 AbstractCegarLoop]: Abstraction has 208459 states and 329218 transitions. [2024-12-02 07:14:21,791 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 2 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 2 states have call predecessors, (76), 2 states have call successors, (76) [2024-12-02 07:14:21,791 INFO L276 IsEmpty]: Start isEmpty. Operand 208459 states and 329218 transitions. [2024-12-02 07:14:22,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 473 [2024-12-02 07:14:22,108 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:14:22,109 INFO L218 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:14:22,109 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-02 07:14:22,109 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:14:22,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:14:22,110 INFO L85 PathProgramCache]: Analyzing trace with hash 318901712, now seen corresponding path program 1 times [2024-12-02 07:14:22,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:14:22,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204440437] [2024-12-02 07:14:22,110 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:14:22,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:14:22,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:14:23,217 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11400 trivial. 0 not checked. [2024-12-02 07:14:23,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:14:23,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204440437] [2024-12-02 07:14:23,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204440437] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:14:23,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:14:23,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 07:14:23,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79577273] [2024-12-02 07:14:23,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:14:23,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 07:14:23,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:14:23,219 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 07:14:23,219 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-12-02 07:14:23,219 INFO L87 Difference]: Start difference. First operand 208459 states and 329218 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 2 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 2 states have call predecessors, (76), 2 states have call successors, (76) [2024-12-02 07:15:21,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:15:21,804 INFO L93 Difference]: Finished difference Result 429115 states and 676466 transitions. [2024-12-02 07:15:21,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 07:15:21,804 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 2 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 2 states have call predecessors, (76), 2 states have call successors, (76) Word has length 472 [2024-12-02 07:15:21,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:15:22,612 INFO L225 Difference]: With dead ends: 429115 [2024-12-02 07:15:22,612 INFO L226 Difference]: Without dead ends: 275577 [2024-12-02 07:15:22,898 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-12-02 07:15:22,899 INFO L435 NwaCegarLoop]: 509 mSDtfsCounter, 1226 mSDsluCounter, 1713 mSDsCounter, 0 mSdLazyCounter, 1305 mSolverCounterSat, 394 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1226 SdHoareTripleChecker+Valid, 2222 SdHoareTripleChecker+Invalid, 1699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 394 IncrementalHoareTripleChecker+Valid, 1305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-12-02 07:15:22,899 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1226 Valid, 2222 Invalid, 1699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [394 Valid, 1305 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-12-02 07:15:23,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275577 states. [2024-12-02 07:16:02,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275577 to 211163. [2024-12-02 07:16:02,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211163 states, 153943 states have (on average 1.4808403110242103) internal successors, (227965), 155112 states have internal predecessors, (227965), 52876 states have call successors, (52876), 4343 states have call predecessors, (52876), 4343 states have return successors, (52876), 51707 states have call predecessors, (52876), 52876 states have call successors, (52876) [2024-12-02 07:16:03,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211163 states to 211163 states and 333717 transitions. [2024-12-02 07:16:03,851 INFO L78 Accepts]: Start accepts. Automaton has 211163 states and 333717 transitions. Word has length 472 [2024-12-02 07:16:03,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:16:03,852 INFO L471 AbstractCegarLoop]: Abstraction has 211163 states and 333717 transitions. [2024-12-02 07:16:03,852 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 2 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 2 states have call predecessors, (76), 2 states have call successors, (76) [2024-12-02 07:16:03,853 INFO L276 IsEmpty]: Start isEmpty. Operand 211163 states and 333717 transitions. [2024-12-02 07:16:03,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 473 [2024-12-02 07:16:03,941 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:16:03,941 INFO L218 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:16:03,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-12-02 07:16:03,941 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:16:03,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:16:03,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1614866956, now seen corresponding path program 1 times [2024-12-02 07:16:03,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:16:03,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219185949] [2024-12-02 07:16:03,943 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:16:03,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:16:04,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:16:40,964 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 123 proven. 102 refuted. 0 times theorem prover too weak. 11175 trivial. 0 not checked. [2024-12-02 07:16:40,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:16:40,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219185949] [2024-12-02 07:16:40,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219185949] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:16:40,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [871958017] [2024-12-02 07:16:40,965 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:16:40,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:16:40,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685df71c-cdbf-45c3-bacc-6a0467559349/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:16:40,967 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685df71c-cdbf-45c3-bacc-6a0467559349/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:16:40,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685df71c-cdbf-45c3-bacc-6a0467559349/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 07:16:41,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:16:41,210 INFO L256 TraceCheckSpWp]: Trace formula consists of 1039 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-12-02 07:16:41,222 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:16:42,123 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 6693 proven. 102 refuted. 0 times theorem prover too weak. 4605 trivial. 0 not checked. [2024-12-02 07:16:42,123 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:16:42,841 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 123 proven. 102 refuted. 0 times theorem prover too weak. 11175 trivial. 0 not checked. [2024-12-02 07:16:42,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [871958017] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:16:42,841 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:16:42,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 10] total 26 [2024-12-02 07:16:42,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846570747] [2024-12-02 07:16:42,841 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:16:42,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-12-02 07:16:42,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:16:42,844 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-12-02 07:16:42,844 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=538, Unknown=0, NotChecked=0, Total=650 [2024-12-02 07:16:42,844 INFO L87 Difference]: Start difference. First operand 211163 states and 333717 transitions. Second operand has 26 states, 26 states have (on average 7.115384615384615) internal successors, (185), 26 states have internal predecessors, (185), 5 states have call successors, (144), 3 states have call predecessors, (144), 5 states have return successors, (145), 5 states have call predecessors, (145), 5 states have call successors, (145) [2024-12-02 07:17:18,567 WARN L286 SmtUtils]: Spent 5.56s on a formula simplification. DAG size of input: 111 DAG size of output: 58 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)