./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-50_file-56.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_e019b0f5-930a-46af-9058-b669e4ff4fab/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e019b0f5-930a-46af-9058-b669e4ff4fab/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_e019b0f5-930a-46af-9058-b669e4ff4fab/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e019b0f5-930a-46af-9058-b669e4ff4fab/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-50_file-56.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e019b0f5-930a-46af-9058-b669e4ff4fab/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_e019b0f5-930a-46af-9058-b669e4ff4fab/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 25dee156812923f4009aa29b92f2684a119b1400910c74d3234b2f21dc5fd6b3 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-01 23:06:22,759 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-01 23:06:22,820 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e019b0f5-930a-46af-9058-b669e4ff4fab/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-01 23:06:22,826 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-01 23:06:22,827 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-01 23:06:22,849 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-01 23:06:22,850 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-01 23:06:22,850 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-01 23:06:22,850 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-01 23:06:22,850 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-01 23:06:22,850 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-01 23:06:22,851 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-01 23:06:22,851 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-01 23:06:22,851 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-01 23:06:22,851 INFO L153 SettingsManager]: * Use SBE=true [2024-12-01 23:06:22,851 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-01 23:06:22,851 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-01 23:06:22,851 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-01 23:06:22,852 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-01 23:06:22,852 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-01 23:06:22,852 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-01 23:06:22,852 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-01 23:06:22,852 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-01 23:06:22,852 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-01 23:06:22,852 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-01 23:06:22,852 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-01 23:06:22,852 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-01 23:06:22,852 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-01 23:06:22,852 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-01 23:06:22,852 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-01 23:06:22,853 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-01 23:06:22,853 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-01 23:06:22,853 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-01 23:06:22,853 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-01 23:06:22,853 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-01 23:06:22,853 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-01 23:06:22,853 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-01 23:06:22,853 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-01 23:06:22,853 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-01 23:06:22,853 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-01 23:06:22,853 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-01 23:06:22,854 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-01 23:06:22,854 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-01 23:06:22,854 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-01 23:06:22,854 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-01 23:06:22,854 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-01 23:06:22,854 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-01 23:06:22,854 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-01 23:06:22,854 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_e019b0f5-930a-46af-9058-b669e4ff4fab/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 -> 25dee156812923f4009aa29b92f2684a119b1400910c74d3234b2f21dc5fd6b3 [2024-12-01 23:06:23,080 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-01 23:06:23,088 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-01 23:06:23,090 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-01 23:06:23,091 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-01 23:06:23,092 INFO L274 PluginConnector]: CDTParser initialized [2024-12-01 23:06:23,093 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e019b0f5-930a-46af-9058-b669e4ff4fab/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-50_file-56.i [2024-12-01 23:06:25,853 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e019b0f5-930a-46af-9058-b669e4ff4fab/bin/uautomizer-verify-84ZbGMXZE1/data/fb1a34d12/01e74428a3dd4bf68b3e574ac2d12c05/FLAG1bdd66c89 [2024-12-01 23:06:26,117 INFO L384 CDTParser]: Found 1 translation units. [2024-12-01 23:06:26,117 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e019b0f5-930a-46af-9058-b669e4ff4fab/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-50_file-56.i [2024-12-01 23:06:26,127 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e019b0f5-930a-46af-9058-b669e4ff4fab/bin/uautomizer-verify-84ZbGMXZE1/data/fb1a34d12/01e74428a3dd4bf68b3e574ac2d12c05/FLAG1bdd66c89 [2024-12-01 23:06:26,449 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e019b0f5-930a-46af-9058-b669e4ff4fab/bin/uautomizer-verify-84ZbGMXZE1/data/fb1a34d12/01e74428a3dd4bf68b3e574ac2d12c05 [2024-12-01 23:06:26,451 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-01 23:06:26,452 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-01 23:06:26,453 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-01 23:06:26,453 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-01 23:06:26,457 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-01 23:06:26,458 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 11:06:26" (1/1) ... [2024-12-01 23:06:26,459 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f5eaae3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:06:26, skipping insertion in model container [2024-12-01 23:06:26,459 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 11:06:26" (1/1) ... [2024-12-01 23:06:26,478 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-01 23:06:26,571 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_e019b0f5-930a-46af-9058-b669e4ff4fab/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-50_file-56.i[915,928] [2024-12-01 23:06:26,631 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-01 23:06:26,641 INFO L200 MainTranslator]: Completed pre-run [2024-12-01 23:06:26,648 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_e019b0f5-930a-46af-9058-b669e4ff4fab/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-50_file-56.i[915,928] [2024-12-01 23:06:26,683 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-01 23:06:26,698 INFO L204 MainTranslator]: Completed translation [2024-12-01 23:06:26,698 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:06:26 WrapperNode [2024-12-01 23:06:26,699 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-01 23:06:26,700 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-01 23:06:26,700 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-01 23:06:26,700 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-01 23:06:26,706 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:06:26" (1/1) ... [2024-12-01 23:06:26,716 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:06:26" (1/1) ... [2024-12-01 23:06:26,758 INFO L138 Inliner]: procedures = 26, calls = 67, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 284 [2024-12-01 23:06:26,758 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-01 23:06:26,759 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-01 23:06:26,759 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-01 23:06:26,759 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-01 23:06:26,768 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:06:26" (1/1) ... [2024-12-01 23:06:26,768 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:06:26" (1/1) ... [2024-12-01 23:06:26,773 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:06:26" (1/1) ... [2024-12-01 23:06:26,794 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]. [2024-12-01 23:06:26,794 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:06:26" (1/1) ... [2024-12-01 23:06:26,794 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:06:26" (1/1) ... [2024-12-01 23:06:26,805 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:06:26" (1/1) ... [2024-12-01 23:06:26,807 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:06:26" (1/1) ... [2024-12-01 23:06:26,810 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:06:26" (1/1) ... [2024-12-01 23:06:26,813 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:06:26" (1/1) ... [2024-12-01 23:06:26,816 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:06:26" (1/1) ... [2024-12-01 23:06:26,821 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-01 23:06:26,822 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-01 23:06:26,822 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-01 23:06:26,822 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-01 23:06:26,823 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:06:26" (1/1) ... [2024-12-01 23:06:26,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-01 23:06:26,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e019b0f5-930a-46af-9058-b669e4ff4fab/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:06:26,853 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e019b0f5-930a-46af-9058-b669e4ff4fab/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-01 23:06:26,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e019b0f5-930a-46af-9058-b669e4ff4fab/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-01 23:06:26,878 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-01 23:06:26,878 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-01 23:06:26,878 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-01 23:06:26,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-01 23:06:26,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-01 23:06:26,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-01 23:06:26,959 INFO L234 CfgBuilder]: Building ICFG [2024-12-01 23:06:26,960 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-01 23:06:27,395 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2024-12-01 23:06:27,395 INFO L283 CfgBuilder]: Performing block encoding [2024-12-01 23:06:27,406 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-01 23:06:27,406 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-01 23:06:27,407 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:06:27 BoogieIcfgContainer [2024-12-01 23:06:27,407 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-01 23:06:27,409 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-01 23:06:27,409 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-01 23:06:27,414 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-01 23:06:27,414 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 11:06:26" (1/3) ... [2024-12-01 23:06:27,415 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f0e9300 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 11:06:27, skipping insertion in model container [2024-12-01 23:06:27,415 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:06:26" (2/3) ... [2024-12-01 23:06:27,415 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f0e9300 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 11:06:27, skipping insertion in model container [2024-12-01 23:06:27,415 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:06:27" (3/3) ... [2024-12-01 23:06:27,416 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-50_file-56.i [2024-12-01 23:06:27,432 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-01 23:06:27,435 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodesize_ps-cn-50_file-56.i that has 2 procedures, 127 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-01 23:06:27,493 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-01 23:06:27,505 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;@64d01bb5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-01 23:06:27,505 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-01 23:06:27,509 INFO L276 IsEmpty]: Start isEmpty. Operand has 127 states, 70 states have (on average 1.3428571428571427) internal successors, (94), 71 states have internal predecessors, (94), 54 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2024-12-01 23:06:27,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2024-12-01 23:06:27,524 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:06:27,525 INFO L218 NwaCegarLoop]: trace histogram [54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:06:27,525 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:06:27,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:06:27,530 INFO L85 PathProgramCache]: Analyzing trace with hash -911417843, now seen corresponding path program 1 times [2024-12-01 23:06:27,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:06:27,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393856392] [2024-12-01 23:06:27,537 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:06:27,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:06:27,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:06:29,412 INFO L134 CoverageAnalysis]: Checked inductivity of 5724 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5724 trivial. 0 not checked. [2024-12-01 23:06:29,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:06:29,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393856392] [2024-12-01 23:06:29,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393856392] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:06:29,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:06:29,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-01 23:06:29,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919560194] [2024-12-01 23:06:29,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:06:29,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-01 23:06:29,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:06:29,440 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-01 23:06:29,440 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-01 23:06:29,443 INFO L87 Difference]: Start difference. First operand has 127 states, 70 states have (on average 1.3428571428571427) internal successors, (94), 71 states have internal predecessors, (94), 54 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 1 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 1 states have call predecessors, (54), 1 states have call successors, (54) [2024-12-01 23:06:29,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:06:29,604 INFO L93 Difference]: Finished difference Result 289 states and 519 transitions. [2024-12-01 23:06:29,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-01 23:06:29,606 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 1 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 1 states have call predecessors, (54), 1 states have call successors, (54) Word has length 325 [2024-12-01 23:06:29,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:06:29,616 INFO L225 Difference]: With dead ends: 289 [2024-12-01 23:06:29,616 INFO L226 Difference]: Without dead ends: 165 [2024-12-01 23:06:29,620 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-01 23:06:29,623 INFO L435 NwaCegarLoop]: 203 mSDtfsCounter, 50 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 759 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 23:06:29,623 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 759 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 23:06:29,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2024-12-01 23:06:29,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 150. [2024-12-01 23:06:29,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 89 states have (on average 1.3146067415730338) internal successors, (117), 90 states have internal predecessors, (117), 58 states have call successors, (58), 2 states have call predecessors, (58), 2 states have return successors, (58), 57 states have call predecessors, (58), 58 states have call successors, (58) [2024-12-01 23:06:29,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 233 transitions. [2024-12-01 23:06:29,679 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 233 transitions. Word has length 325 [2024-12-01 23:06:29,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:06:29,681 INFO L471 AbstractCegarLoop]: Abstraction has 150 states and 233 transitions. [2024-12-01 23:06:29,681 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 1 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 1 states have call predecessors, (54), 1 states have call successors, (54) [2024-12-01 23:06:29,682 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 233 transitions. [2024-12-01 23:06:29,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2024-12-01 23:06:29,689 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:06:29,689 INFO L218 NwaCegarLoop]: trace histogram [54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:06:29,690 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-01 23:06:29,690 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:06:29,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:06:29,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1720764469, now seen corresponding path program 1 times [2024-12-01 23:06:29,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:06:29,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251222971] [2024-12-01 23:06:29,691 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:06:29,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:06:29,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:11:21,109 INFO L134 CoverageAnalysis]: Checked inductivity of 5724 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5724 trivial. 0 not checked. [2024-12-01 23:11:21,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:11:21,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251222971] [2024-12-01 23:11:21,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251222971] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:11:21,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:11:21,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-12-01 23:11:21,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320634726] [2024-12-01 23:11:21,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:11:21,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-12-01 23:11:21,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:11:21,112 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-12-01 23:11:21,113 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2024-12-01 23:11:21,113 INFO L87 Difference]: Start difference. First operand 150 states and 233 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 1 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 1 states have call predecessors, (54), 1 states have call successors, (54) [2024-12-01 23:11:24,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:11:24,043 INFO L93 Difference]: Finished difference Result 359 states and 539 transitions. [2024-12-01 23:11:24,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-12-01 23:11:24,045 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 1 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 1 states have call predecessors, (54), 1 states have call successors, (54) Word has length 325 [2024-12-01 23:11:24,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:11:24,048 INFO L225 Difference]: With dead ends: 359 [2024-12-01 23:11:24,048 INFO L226 Difference]: Without dead ends: 212 [2024-12-01 23:11:24,049 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2024-12-01 23:11:24,050 INFO L435 NwaCegarLoop]: 182 mSDtfsCounter, 131 mSDsluCounter, 1079 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 1261 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-01 23:11:24,050 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 1261 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-01 23:11:24,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2024-12-01 23:11:24,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 157. [2024-12-01 23:11:24,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 96 states have (on average 1.3020833333333333) internal successors, (125), 97 states have internal predecessors, (125), 58 states have call successors, (58), 2 states have call predecessors, (58), 2 states have return successors, (58), 57 states have call predecessors, (58), 58 states have call successors, (58) [2024-12-01 23:11:24,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 241 transitions. [2024-12-01 23:11:24,075 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 241 transitions. Word has length 325 [2024-12-01 23:11:24,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:11:24,077 INFO L471 AbstractCegarLoop]: Abstraction has 157 states and 241 transitions. [2024-12-01 23:11:24,077 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 1 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 1 states have call predecessors, (54), 1 states have call successors, (54) [2024-12-01 23:11:24,077 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 241 transitions. [2024-12-01 23:11:24,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2024-12-01 23:11:24,080 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:11:24,080 INFO L218 NwaCegarLoop]: trace histogram [54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:11:24,080 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-01 23:11:24,080 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:11:24,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:11:24,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1040706099, now seen corresponding path program 1 times [2024-12-01 23:11:24,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:11:24,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738516139] [2024-12-01 23:11:24,081 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:11:24,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:11:24,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:16:57,664 INFO L134 CoverageAnalysis]: Checked inductivity of 5724 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5724 trivial. 0 not checked. [2024-12-01 23:16:57,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:16:57,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738516139] [2024-12-01 23:16:57,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738516139] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:16:57,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:16:57,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-12-01 23:16:57,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229616507] [2024-12-01 23:16:57,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:16:57,666 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-12-01 23:16:57,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:16:57,667 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-12-01 23:16:57,667 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2024-12-01 23:16:57,667 INFO L87 Difference]: Start difference. First operand 157 states and 241 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 1 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 1 states have call predecessors, (54), 1 states have call successors, (54) [2024-12-01 23:17:01,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:17:01,004 INFO L93 Difference]: Finished difference Result 365 states and 546 transitions. [2024-12-01 23:17:01,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-01 23:17:01,006 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 1 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 1 states have call predecessors, (54), 1 states have call successors, (54) Word has length 325 [2024-12-01 23:17:01,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:17:01,009 INFO L225 Difference]: With dead ends: 365 [2024-12-01 23:17:01,010 INFO L226 Difference]: Without dead ends: 211 [2024-12-01 23:17:01,011 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2024-12-01 23:17:01,012 INFO L435 NwaCegarLoop]: 188 mSDtfsCounter, 90 mSDsluCounter, 1080 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 1268 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-01 23:17:01,012 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 1268 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-01 23:17:01,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2024-12-01 23:17:01,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 156. [2024-12-01 23:17:01,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 95 states have (on average 1.305263157894737) internal successors, (124), 96 states have internal predecessors, (124), 58 states have call successors, (58), 2 states have call predecessors, (58), 2 states have return successors, (58), 57 states have call predecessors, (58), 58 states have call successors, (58) [2024-12-01 23:17:01,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 240 transitions. [2024-12-01 23:17:01,039 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 240 transitions. Word has length 325 [2024-12-01 23:17:01,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:17:01,040 INFO L471 AbstractCegarLoop]: Abstraction has 156 states and 240 transitions. [2024-12-01 23:17:01,041 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 1 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 1 states have call predecessors, (54), 1 states have call successors, (54) [2024-12-01 23:17:01,041 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 240 transitions. [2024-12-01 23:17:01,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2024-12-01 23:17:01,043 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:17:01,043 INFO L218 NwaCegarLoop]: trace histogram [54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:17:01,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-01 23:17:01,044 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:17:01,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:17:01,044 INFO L85 PathProgramCache]: Analyzing trace with hash -210353265, now seen corresponding path program 1 times [2024-12-01 23:17:01,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:17:01,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603731929] [2024-12-01 23:17:01,045 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:17:01,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:17:01,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat