./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_lcr.7.1.ufo.UNBOUNDED.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/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_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_lcr.7.1.ufo.UNBOUNDED.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/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_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/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 d52f31574095462f7bebf0d97516364dd650b64428a7b12e3aa21d1b47f96325 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 06:54:44,704 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 06:54:44,758 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 06:54:44,762 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 06:54:44,763 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 06:54:44,783 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 06:54:44,783 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 06:54:44,783 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 06:54:44,784 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 06:54:44,784 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 06:54:44,784 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 06:54:44,784 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 06:54:44,784 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 06:54:44,784 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 06:54:44,785 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 06:54:44,785 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 06:54:44,785 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 06:54:44,785 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 06:54:44,785 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 06:54:44,785 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 06:54:44,785 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 06:54:44,785 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 06:54:44,785 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 06:54:44,785 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 06:54:44,785 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 06:54:44,786 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 06:54:44,786 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 06:54:44,786 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 06:54:44,786 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 06:54:44,786 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 06:54:44,786 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 06:54:44,786 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 06:54:44,786 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 06:54:44,786 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 06:54:44,786 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 06:54:44,786 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 06:54:44,786 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 06:54:44,787 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 06:54:44,787 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 06:54:44,787 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 06:54:44,787 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 06:54:44,787 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 06:54:44,787 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 06:54:44,787 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 06:54:44,787 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 06:54:44,787 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 06:54:44,787 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 06:54:44,787 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 06:54:44,787 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_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/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 -> d52f31574095462f7bebf0d97516364dd650b64428a7b12e3aa21d1b47f96325 [2024-12-02 06:54:45,014 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 06:54:45,022 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 06:54:45,024 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 06:54:45,025 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 06:54:45,026 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 06:54:45,027 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/seq-mthreaded/pals_lcr.7.1.ufo.UNBOUNDED.pals.c [2024-12-02 06:54:47,622 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/data/c5985ec62/7c439a8487ca4ff68a4dbf273225ec1a/FLAGa5e940dca [2024-12-02 06:54:47,858 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 06:54:47,859 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/sv-benchmarks/c/seq-mthreaded/pals_lcr.7.1.ufo.UNBOUNDED.pals.c [2024-12-02 06:54:47,869 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/data/c5985ec62/7c439a8487ca4ff68a4dbf273225ec1a/FLAGa5e940dca [2024-12-02 06:54:48,205 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/data/c5985ec62/7c439a8487ca4ff68a4dbf273225ec1a [2024-12-02 06:54:48,207 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 06:54:48,209 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 06:54:48,210 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 06:54:48,210 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 06:54:48,214 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 06:54:48,215 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:54:48" (1/1) ... [2024-12-02 06:54:48,216 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f496c78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:54:48, skipping insertion in model container [2024-12-02 06:54:48,216 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:54:48" (1/1) ... [2024-12-02 06:54:48,239 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 06:54:48,445 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_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/sv-benchmarks/c/seq-mthreaded/pals_lcr.7.1.ufo.UNBOUNDED.pals.c[20084,20097] [2024-12-02 06:54:48,448 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 06:54:48,459 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 06:54:48,508 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_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/sv-benchmarks/c/seq-mthreaded/pals_lcr.7.1.ufo.UNBOUNDED.pals.c[20084,20097] [2024-12-02 06:54:48,508 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 06:54:48,523 INFO L204 MainTranslator]: Completed translation [2024-12-02 06:54:48,524 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:54:48 WrapperNode [2024-12-02 06:54:48,524 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 06:54:48,525 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 06:54:48,525 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 06:54:48,525 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 06:54:48,531 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:54:48" (1/1) ... [2024-12-02 06:54:48,540 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:54:48" (1/1) ... [2024-12-02 06:54:48,566 INFO L138 Inliner]: procedures = 27, calls = 18, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 458 [2024-12-02 06:54:48,566 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 06:54:48,567 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 06:54:48,567 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 06:54:48,567 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 06:54:48,576 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:54:48" (1/1) ... [2024-12-02 06:54:48,576 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:54:48" (1/1) ... [2024-12-02 06:54:48,579 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:54:48" (1/1) ... [2024-12-02 06:54:48,593 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 06:54:48,594 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:54:48" (1/1) ... [2024-12-02 06:54:48,594 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:54:48" (1/1) ... [2024-12-02 06:54:48,602 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:54:48" (1/1) ... [2024-12-02 06:54:48,603 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:54:48" (1/1) ... [2024-12-02 06:54:48,610 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:54:48" (1/1) ... [2024-12-02 06:54:48,612 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:54:48" (1/1) ... [2024-12-02 06:54:48,613 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:54:48" (1/1) ... [2024-12-02 06:54:48,617 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 06:54:48,617 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 06:54:48,618 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 06:54:48,618 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 06:54:48,619 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:54:48" (1/1) ... [2024-12-02 06:54:48,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 06:54:48,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:54:48,648 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 06:54:48,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 06:54:48,677 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 06:54:48,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 06:54:48,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 06:54:48,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 06:54:48,764 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 06:54:48,765 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 06:54:49,214 INFO L? ?]: Removed 50 outVars from TransFormulas that were not future-live. [2024-12-02 06:54:49,214 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 06:54:49,226 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 06:54:49,226 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 06:54:49,227 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:54:49 BoogieIcfgContainer [2024-12-02 06:54:49,227 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 06:54:49,229 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 06:54:49,229 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 06:54:49,234 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 06:54:49,234 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 06:54:48" (1/3) ... [2024-12-02 06:54:49,235 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@611b3257 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:54:49, skipping insertion in model container [2024-12-02 06:54:49,235 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:54:48" (2/3) ... [2024-12-02 06:54:49,235 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@611b3257 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:54:49, skipping insertion in model container [2024-12-02 06:54:49,235 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:54:49" (3/3) ... [2024-12-02 06:54:49,237 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.1.ufo.UNBOUNDED.pals.c [2024-12-02 06:54:49,252 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 06:54:49,255 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_lcr.7.1.ufo.UNBOUNDED.pals.c that has 1 procedures, 116 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 06:54:49,319 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 06:54:49,330 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;@2061f6d0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 06:54:49,330 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 06:54:49,334 INFO L276 IsEmpty]: Start isEmpty. Operand has 116 states, 114 states have (on average 1.780701754385965) internal successors, (203), 115 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:54:49,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-12-02 06:54:49,340 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:54:49,340 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 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 06:54:49,341 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:54:49,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:54:49,345 INFO L85 PathProgramCache]: Analyzing trace with hash 1728308088, now seen corresponding path program 1 times [2024-12-02 06:54:49,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:54:49,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409089499] [2024-12-02 06:54:49,351 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:54:49,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:54:49,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:54:49,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:54:49,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:54:49,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409089499] [2024-12-02 06:54:49,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409089499] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:54:49,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:54:49,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 06:54:49,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630277046] [2024-12-02 06:54:49,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:54:49,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 06:54:49,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:54:49,587 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 06:54:49,588 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 06:54:49,590 INFO L87 Difference]: Start difference. First operand has 116 states, 114 states have (on average 1.780701754385965) internal successors, (203), 115 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:54:49,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:54:49,608 INFO L93 Difference]: Finished difference Result 173 states and 297 transitions. [2024-12-02 06:54:49,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 06:54:49,609 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-12-02 06:54:49,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:54:49,614 INFO L225 Difference]: With dead ends: 173 [2024-12-02 06:54:49,614 INFO L226 Difference]: Without dead ends: 112 [2024-12-02 06:54:49,616 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 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 06:54:49,618 INFO L435 NwaCegarLoop]: 196 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, 196 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 06:54:49,619 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:54:49,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2024-12-02 06:54:49,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2024-12-02 06:54:49,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 1.7657657657657657) internal successors, (196), 111 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:54:49,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 196 transitions. [2024-12-02 06:54:49,643 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 196 transitions. Word has length 27 [2024-12-02 06:54:49,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:54:49,643 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 196 transitions. [2024-12-02 06:54:49,644 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:54:49,644 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 196 transitions. [2024-12-02 06:54:49,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-12-02 06:54:49,645 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:54:49,645 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 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 06:54:49,645 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 06:54:49,645 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:54:49,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:54:49,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1947162806, now seen corresponding path program 1 times [2024-12-02 06:54:49,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:54:49,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284909525] [2024-12-02 06:54:49,646 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:54:49,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:54:49,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:54:49,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:54:49,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:54:49,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284909525] [2024-12-02 06:54:49,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284909525] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:54:49,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:54:49,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 06:54:49,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480357885] [2024-12-02 06:54:49,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:54:49,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 06:54:49,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:54:49,868 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 06:54:49,868 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 06:54:49,868 INFO L87 Difference]: Start difference. First operand 112 states and 196 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:54:49,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:54:49,980 INFO L93 Difference]: Finished difference Result 172 states and 290 transitions. [2024-12-02 06:54:49,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 06:54:49,980 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-12-02 06:54:49,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:54:49,981 INFO L225 Difference]: With dead ends: 172 [2024-12-02 06:54:49,981 INFO L226 Difference]: Without dead ends: 112 [2024-12-02 06:54:49,982 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 06:54:49,982 INFO L435 NwaCegarLoop]: 194 mSDtfsCounter, 0 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 721 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 06:54:49,983 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 721 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 06:54:49,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2024-12-02 06:54:49,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2024-12-02 06:54:49,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 1.3153153153153154) internal successors, (146), 111 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:54:49,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 146 transitions. [2024-12-02 06:54:49,988 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 146 transitions. Word has length 27 [2024-12-02 06:54:49,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:54:49,988 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 146 transitions. [2024-12-02 06:54:49,988 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:54:49,988 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 146 transitions. [2024-12-02 06:54:49,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-12-02 06:54:49,989 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:54:49,989 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:54:49,990 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 06:54:49,990 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:54:49,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:54:49,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1738990554, now seen corresponding path program 1 times [2024-12-02 06:54:49,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:54:49,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872641193] [2024-12-02 06:54:49,990 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:54:49,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:54:50,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:54:50,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:54:50,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:54:50,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872641193] [2024-12-02 06:54:50,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872641193] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:54:50,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:54:50,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 06:54:50,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790880103] [2024-12-02 06:54:50,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:54:50,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 06:54:50,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:54:50,266 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 06:54:50,267 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-12-02 06:54:50,267 INFO L87 Difference]: Start difference. First operand 112 states and 146 transitions. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:54:50,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:54:50,725 INFO L93 Difference]: Finished difference Result 896 states and 1406 transitions. [2024-12-02 06:54:50,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-12-02 06:54:50,726 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2024-12-02 06:54:50,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:54:50,731 INFO L225 Difference]: With dead ends: 896 [2024-12-02 06:54:50,731 INFO L226 Difference]: Without dead ends: 840 [2024-12-02 06:54:50,732 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2024-12-02 06:54:50,733 INFO L435 NwaCegarLoop]: 140 mSDtfsCounter, 1616 mSDsluCounter, 2532 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1616 SdHoareTripleChecker+Valid, 2672 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 06:54:50,734 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1616 Valid, 2672 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 06:54:50,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 840 states. [2024-12-02 06:54:50,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 840 to 166. [2024-12-02 06:54:50,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 165 states have (on average 1.412121212121212) internal successors, (233), 165 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:54:50,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 233 transitions. [2024-12-02 06:54:50,757 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 233 transitions. Word has length 76 [2024-12-02 06:54:50,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:54:50,758 INFO L471 AbstractCegarLoop]: Abstraction has 166 states and 233 transitions. [2024-12-02 06:54:50,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:54:50,758 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 233 transitions. [2024-12-02 06:54:50,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-12-02 06:54:50,760 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:54:50,760 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:54:50,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 06:54:50,761 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:54:50,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:54:50,761 INFO L85 PathProgramCache]: Analyzing trace with hash -988047094, now seen corresponding path program 1 times [2024-12-02 06:54:50,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:54:50,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239833254] [2024-12-02 06:54:50,761 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:54:50,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:54:50,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:54:50,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:54:50,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:54:50,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239833254] [2024-12-02 06:54:50,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239833254] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:54:50,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:54:50,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:54:50,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097370969] [2024-12-02 06:54:50,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:54:50,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:54:50,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:54:50,899 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:54:50,899 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:54:50,899 INFO L87 Difference]: Start difference. First operand 166 states and 233 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:54:50,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:54:50,929 INFO L93 Difference]: Finished difference Result 375 states and 568 transitions. [2024-12-02 06:54:50,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:54:50,929 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2024-12-02 06:54:50,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:54:50,930 INFO L225 Difference]: With dead ends: 375 [2024-12-02 06:54:50,930 INFO L226 Difference]: Without dead ends: 265 [2024-12-02 06:54:50,931 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 06:54:50,932 INFO L435 NwaCegarLoop]: 142 mSDtfsCounter, 61 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:54:50,932 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 225 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:54:50,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2024-12-02 06:54:50,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 261. [2024-12-02 06:54:50,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 260 states have (on average 1.4730769230769232) internal successors, (383), 260 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:54:50,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 383 transitions. [2024-12-02 06:54:50,945 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 383 transitions. Word has length 78 [2024-12-02 06:54:50,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:54:50,945 INFO L471 AbstractCegarLoop]: Abstraction has 261 states and 383 transitions. [2024-12-02 06:54:50,946 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:54:50,946 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 383 transitions. [2024-12-02 06:54:50,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-12-02 06:54:50,948 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:54:50,948 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:54:50,948 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 06:54:50,948 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:54:50,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:54:50,948 INFO L85 PathProgramCache]: Analyzing trace with hash -921553582, now seen corresponding path program 1 times [2024-12-02 06:54:50,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:54:50,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70493098] [2024-12-02 06:54:50,949 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:54:50,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:54:50,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:54:51,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:54:51,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:54:51,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70493098] [2024-12-02 06:54:51,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70493098] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:54:51,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:54:51,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 06:54:51,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511692873] [2024-12-02 06:54:51,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:54:51,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 06:54:51,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:54:51,437 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 06:54:51,437 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-12-02 06:54:51,438 INFO L87 Difference]: Start difference. First operand 261 states and 383 transitions. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:54:51,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:54:51,837 INFO L93 Difference]: Finished difference Result 468 states and 711 transitions. [2024-12-02 06:54:51,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 06:54:51,838 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2024-12-02 06:54:51,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:54:51,839 INFO L225 Difference]: With dead ends: 468 [2024-12-02 06:54:51,839 INFO L226 Difference]: Without dead ends: 263 [2024-12-02 06:54:51,840 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2024-12-02 06:54:51,841 INFO L435 NwaCegarLoop]: 137 mSDtfsCounter, 123 mSDsluCounter, 616 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 753 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 06:54:51,841 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 753 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 06:54:51,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2024-12-02 06:54:51,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 261. [2024-12-02 06:54:51,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 260 states have (on average 1.4653846153846153) internal successors, (381), 260 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:54:51,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 381 transitions. [2024-12-02 06:54:51,855 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 381 transitions. Word has length 78 [2024-12-02 06:54:51,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:54:51,855 INFO L471 AbstractCegarLoop]: Abstraction has 261 states and 381 transitions. [2024-12-02 06:54:51,855 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:54:51,855 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 381 transitions. [2024-12-02 06:54:51,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-12-02 06:54:51,856 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:54:51,857 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:54:51,857 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 06:54:51,857 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:54:51,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:54:51,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1081887121, now seen corresponding path program 1 times [2024-12-02 06:54:51,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:54:51,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063115648] [2024-12-02 06:54:51,858 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:54:51,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:54:51,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:54:52,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:54:52,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:54:52,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063115648] [2024-12-02 06:54:52,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063115648] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:54:52,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:54:52,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 06:54:52,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832774023] [2024-12-02 06:54:52,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:54:52,125 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 06:54:52,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:54:52,126 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 06:54:52,126 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 06:54:52,126 INFO L87 Difference]: Start difference. First operand 261 states and 381 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:54:52,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:54:52,167 INFO L93 Difference]: Finished difference Result 269 states and 390 transitions. [2024-12-02 06:54:52,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 06:54:52,167 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2024-12-02 06:54:52,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:54:52,169 INFO L225 Difference]: With dead ends: 269 [2024-12-02 06:54:52,169 INFO L226 Difference]: Without dead ends: 267 [2024-12-02 06:54:52,169 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 06:54:52,170 INFO L435 NwaCegarLoop]: 140 mSDtfsCounter, 0 mSDsluCounter, 827 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 967 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:54:52,170 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 967 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:54:52,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2024-12-02 06:54:52,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 267. [2024-12-02 06:54:52,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 266 states have (on average 1.4511278195488722) internal successors, (386), 266 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:54:52,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 386 transitions. [2024-12-02 06:54:52,178 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 386 transitions. Word has length 79 [2024-12-02 06:54:52,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:54:52,178 INFO L471 AbstractCegarLoop]: Abstraction has 267 states and 386 transitions. [2024-12-02 06:54:52,178 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:54:52,178 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 386 transitions. [2024-12-02 06:54:52,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-12-02 06:54:52,179 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:54:52,179 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:54:52,179 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 06:54:52,179 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:54:52,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:54:52,180 INFO L85 PathProgramCache]: Analyzing trace with hash -610705390, now seen corresponding path program 1 times [2024-12-02 06:54:52,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:54:52,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296036451] [2024-12-02 06:54:52,180 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:54:52,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:54:52,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:54:52,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:54:52,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:54:52,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296036451] [2024-12-02 06:54:52,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296036451] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:54:52,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:54:52,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:54:52,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181500582] [2024-12-02 06:54:52,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:54:52,233 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:54:52,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:54:52,234 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:54:52,234 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:54:52,234 INFO L87 Difference]: Start difference. First operand 267 states and 386 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:54:52,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:54:52,254 INFO L93 Difference]: Finished difference Result 673 states and 1018 transitions. [2024-12-02 06:54:52,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:54:52,254 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2024-12-02 06:54:52,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:54:52,256 INFO L225 Difference]: With dead ends: 673 [2024-12-02 06:54:52,256 INFO L226 Difference]: Without dead ends: 462 [2024-12-02 06:54:52,256 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 06:54:52,257 INFO L435 NwaCegarLoop]: 213 mSDtfsCounter, 78 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:54:52,257 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 308 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:54:52,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2024-12-02 06:54:52,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 460. [2024-12-02 06:54:52,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 459 states have (on average 1.4880174291938997) internal successors, (683), 459 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:54:52,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 683 transitions. [2024-12-02 06:54:52,268 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 683 transitions. Word has length 80 [2024-12-02 06:54:52,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:54:52,269 INFO L471 AbstractCegarLoop]: Abstraction has 460 states and 683 transitions. [2024-12-02 06:54:52,269 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:54:52,269 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 683 transitions. [2024-12-02 06:54:52,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-12-02 06:54:52,269 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:54:52,269 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:54:52,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 06:54:52,270 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:54:52,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:54:52,270 INFO L85 PathProgramCache]: Analyzing trace with hash -183934446, now seen corresponding path program 1 times [2024-12-02 06:54:52,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:54:52,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959318110] [2024-12-02 06:54:52,270 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:54:52,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:54:52,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:54:52,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:54:52,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:54:52,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959318110] [2024-12-02 06:54:52,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959318110] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:54:52,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:54:52,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:54:52,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637562945] [2024-12-02 06:54:52,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:54:52,324 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:54:52,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:54:52,324 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:54:52,324 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:54:52,324 INFO L87 Difference]: Start difference. First operand 460 states and 683 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:54:52,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:54:52,347 INFO L93 Difference]: Finished difference Result 1236 states and 1881 transitions. [2024-12-02 06:54:52,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:54:52,348 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2024-12-02 06:54:52,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:54:52,351 INFO L225 Difference]: With dead ends: 1236 [2024-12-02 06:54:52,351 INFO L226 Difference]: Without dead ends: 832 [2024-12-02 06:54:52,351 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 06:54:52,352 INFO L435 NwaCegarLoop]: 201 mSDtfsCounter, 74 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:54:52,352 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 304 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:54:52,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 832 states. [2024-12-02 06:54:52,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 832 to 830. [2024-12-02 06:54:52,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 830 states, 829 states have (on average 1.5018094089264173) internal successors, (1245), 829 states have internal predecessors, (1245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:54:52,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 830 states and 1245 transitions. [2024-12-02 06:54:52,374 INFO L78 Accepts]: Start accepts. Automaton has 830 states and 1245 transitions. Word has length 80 [2024-12-02 06:54:52,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:54:52,374 INFO L471 AbstractCegarLoop]: Abstraction has 830 states and 1245 transitions. [2024-12-02 06:54:52,375 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:54:52,375 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states and 1245 transitions. [2024-12-02 06:54:52,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-12-02 06:54:52,375 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:54:52,376 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:54:52,376 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 06:54:52,376 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:54:52,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:54:52,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1054327570, now seen corresponding path program 1 times [2024-12-02 06:54:52,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:54:52,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381469776] [2024-12-02 06:54:52,376 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:54:52,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:54:52,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:54:52,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:54:52,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:54:52,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381469776] [2024-12-02 06:54:52,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381469776] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:54:52,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:54:52,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:54:52,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286415754] [2024-12-02 06:54:52,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:54:52,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:54:52,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:54:52,445 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:54:52,445 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:54:52,445 INFO L87 Difference]: Start difference. First operand 830 states and 1245 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:54:52,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:54:52,478 INFO L93 Difference]: Finished difference Result 2314 states and 3511 transitions. [2024-12-02 06:54:52,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:54:52,479 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2024-12-02 06:54:52,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:54:52,483 INFO L225 Difference]: With dead ends: 2314 [2024-12-02 06:54:52,483 INFO L226 Difference]: Without dead ends: 1540 [2024-12-02 06:54:52,484 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 06:54:52,484 INFO L435 NwaCegarLoop]: 199 mSDtfsCounter, 72 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:54:52,485 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 306 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:54:52,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1540 states. [2024-12-02 06:54:52,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1540 to 1538. [2024-12-02 06:54:52,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1538 states, 1537 states have (on average 1.4996746909564085) internal successors, (2305), 1537 states have internal predecessors, (2305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:54:52,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1538 states to 1538 states and 2305 transitions. [2024-12-02 06:54:52,517 INFO L78 Accepts]: Start accepts. Automaton has 1538 states and 2305 transitions. Word has length 80 [2024-12-02 06:54:52,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:54:52,517 INFO L471 AbstractCegarLoop]: Abstraction has 1538 states and 2305 transitions. [2024-12-02 06:54:52,518 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:54:52,518 INFO L276 IsEmpty]: Start isEmpty. Operand 1538 states and 2305 transitions. [2024-12-02 06:54:52,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-12-02 06:54:52,518 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:54:52,518 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:54:52,518 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 06:54:52,519 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:54:52,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:54:52,519 INFO L85 PathProgramCache]: Analyzing trace with hash 619791634, now seen corresponding path program 1 times [2024-12-02 06:54:52,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:54:52,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668230998] [2024-12-02 06:54:52,519 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:54:52,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:54:52,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:54:52,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:54:52,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:54:52,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668230998] [2024-12-02 06:54:52,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668230998] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:54:52,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:54:52,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:54:52,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795246452] [2024-12-02 06:54:52,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:54:52,570 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:54:52,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:54:52,570 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:54:52,571 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:54:52,571 INFO L87 Difference]: Start difference. First operand 1538 states and 2305 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:54:52,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:54:52,617 INFO L93 Difference]: Finished difference Result 4374 states and 6579 transitions. [2024-12-02 06:54:52,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:54:52,618 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2024-12-02 06:54:52,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:54:52,624 INFO L225 Difference]: With dead ends: 4374 [2024-12-02 06:54:52,624 INFO L226 Difference]: Without dead ends: 2892 [2024-12-02 06:54:52,626 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 06:54:52,626 INFO L435 NwaCegarLoop]: 187 mSDtfsCounter, 68 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:54:52,626 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 302 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:54:52,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2892 states. [2024-12-02 06:54:52,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2892 to 2890. [2024-12-02 06:54:52,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2890 states, 2889 states have (on average 1.4873658705434407) internal successors, (4297), 2889 states have internal predecessors, (4297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:54:52,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2890 states to 2890 states and 4297 transitions. [2024-12-02 06:54:52,690 INFO L78 Accepts]: Start accepts. Automaton has 2890 states and 4297 transitions. Word has length 80 [2024-12-02 06:54:52,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:54:52,690 INFO L471 AbstractCegarLoop]: Abstraction has 2890 states and 4297 transitions. [2024-12-02 06:54:52,690 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:54:52,690 INFO L276 IsEmpty]: Start isEmpty. Operand 2890 states and 4297 transitions. [2024-12-02 06:54:52,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-12-02 06:54:52,691 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:54:52,691 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:54:52,691 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 06:54:52,691 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:54:52,691 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:54:52,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1161141230, now seen corresponding path program 1 times [2024-12-02 06:54:52,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:54:52,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791621986] [2024-12-02 06:54:52,692 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:54:52,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:54:52,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:54:52,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:54:52,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:54:52,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791621986] [2024-12-02 06:54:52,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791621986] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:54:52,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:54:52,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:54:52,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853779298] [2024-12-02 06:54:52,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:54:52,741 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:54:52,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:54:52,741 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:54:52,741 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:54:52,742 INFO L87 Difference]: Start difference. First operand 2890 states and 4297 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:54:52,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:54:52,835 INFO L93 Difference]: Finished difference Result 8302 states and 12331 transitions. [2024-12-02 06:54:52,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:54:52,836 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2024-12-02 06:54:52,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:54:52,848 INFO L225 Difference]: With dead ends: 8302 [2024-12-02 06:54:52,848 INFO L226 Difference]: Without dead ends: 5468 [2024-12-02 06:54:52,850 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 06:54:52,851 INFO L435 NwaCegarLoop]: 197 mSDtfsCounter, 70 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:54:52,851 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 308 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:54:52,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5468 states. [2024-12-02 06:54:52,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5468 to 5466. [2024-12-02 06:54:52,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5466 states, 5465 states have (on average 1.4684354986276305) internal successors, (8025), 5465 states have internal predecessors, (8025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:54:52,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5466 states to 5466 states and 8025 transitions. [2024-12-02 06:54:52,967 INFO L78 Accepts]: Start accepts. Automaton has 5466 states and 8025 transitions. Word has length 80 [2024-12-02 06:54:52,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:54:52,967 INFO L471 AbstractCegarLoop]: Abstraction has 5466 states and 8025 transitions. [2024-12-02 06:54:52,967 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:54:52,967 INFO L276 IsEmpty]: Start isEmpty. Operand 5466 states and 8025 transitions. [2024-12-02 06:54:52,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-12-02 06:54:52,968 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:54:52,968 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:54:52,968 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 06:54:52,968 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:54:52,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:54:52,969 INFO L85 PathProgramCache]: Analyzing trace with hash -447790830, now seen corresponding path program 1 times [2024-12-02 06:54:52,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:54:52,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604368313] [2024-12-02 06:54:52,969 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:54:52,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:54:52,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:54:53,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:54:53,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:54:53,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604368313] [2024-12-02 06:54:53,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604368313] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:54:53,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:54:53,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:54:53,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089204542] [2024-12-02 06:54:53,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:54:53,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:54:53,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:54:53,015 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:54:53,015 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:54:53,015 INFO L87 Difference]: Start difference. First operand 5466 states and 8025 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:54:53,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:54:53,176 INFO L93 Difference]: Finished difference Result 15774 states and 23067 transitions. [2024-12-02 06:54:53,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:54:53,176 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2024-12-02 06:54:53,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:54:53,197 INFO L225 Difference]: With dead ends: 15774 [2024-12-02 06:54:53,198 INFO L226 Difference]: Without dead ends: 10364 [2024-12-02 06:54:53,202 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 06:54:53,203 INFO L435 NwaCegarLoop]: 211 mSDtfsCounter, 76 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:54:53,203 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 310 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:54:53,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10364 states. [2024-12-02 06:54:53,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10364 to 10362. [2024-12-02 06:54:53,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10362 states, 10361 states have (on average 1.444744715761027) internal successors, (14969), 10361 states have internal predecessors, (14969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:54:53,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10362 states to 10362 states and 14969 transitions. [2024-12-02 06:54:53,470 INFO L78 Accepts]: Start accepts. Automaton has 10362 states and 14969 transitions. Word has length 80 [2024-12-02 06:54:53,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:54:53,470 INFO L471 AbstractCegarLoop]: Abstraction has 10362 states and 14969 transitions. [2024-12-02 06:54:53,471 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:54:53,471 INFO L276 IsEmpty]: Start isEmpty. Operand 10362 states and 14969 transitions. [2024-12-02 06:54:53,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-12-02 06:54:53,471 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:54:53,471 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:54:53,472 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-02 06:54:53,472 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:54:53,472 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:54:53,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1597757267, now seen corresponding path program 1 times [2024-12-02 06:54:53,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:54:53,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109336511] [2024-12-02 06:54:53,472 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:54:53,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:54:53,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:54:53,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:54:53,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:54:53,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109336511] [2024-12-02 06:54:53,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109336511] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:54:53,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:54:53,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:54:53,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109725427] [2024-12-02 06:54:53,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:54:53,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:54:53,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:54:53,521 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:54:53,521 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:54:53,521 INFO L87 Difference]: Start difference. First operand 10362 states and 14969 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:54:53,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:54:53,710 INFO L93 Difference]: Finished difference Result 21121 states and 30719 transitions. [2024-12-02 06:54:53,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:54:53,710 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2024-12-02 06:54:53,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:54:53,746 INFO L225 Difference]: With dead ends: 21121 [2024-12-02 06:54:53,746 INFO L226 Difference]: Without dead ends: 15358 [2024-12-02 06:54:53,752 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 06:54:53,753 INFO L435 NwaCegarLoop]: 218 mSDtfsCounter, 77 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:54:53,753 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 309 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:54:53,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15358 states. [2024-12-02 06:54:54,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15358 to 15356. [2024-12-02 06:54:54,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15356 states, 15355 states have (on average 1.4376424617388472) internal successors, (22075), 15355 states have internal predecessors, (22075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:54:54,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15356 states to 15356 states and 22075 transitions. [2024-12-02 06:54:54,153 INFO L78 Accepts]: Start accepts. Automaton has 15356 states and 22075 transitions. Word has length 82 [2024-12-02 06:54:54,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:54:54,153 INFO L471 AbstractCegarLoop]: Abstraction has 15356 states and 22075 transitions. [2024-12-02 06:54:54,154 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:54:54,154 INFO L276 IsEmpty]: Start isEmpty. Operand 15356 states and 22075 transitions. [2024-12-02 06:54:54,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-12-02 06:54:54,158 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:54:54,158 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:54:54,158 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 06:54:54,159 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:54:54,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:54:54,159 INFO L85 PathProgramCache]: Analyzing trace with hash -314401999, now seen corresponding path program 1 times [2024-12-02 06:54:54,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:54:54,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705863874] [2024-12-02 06:54:54,159 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:54:54,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:54:54,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:54:54,419 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 06:54:54,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:54:54,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705863874] [2024-12-02 06:54:54,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705863874] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:54:54,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:54:54,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 06:54:54,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868091337] [2024-12-02 06:54:54,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:54:54,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 06:54:54,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:54:54,420 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 06:54:54,421 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-12-02 06:54:54,421 INFO L87 Difference]: Start difference. First operand 15356 states and 22075 transitions. Second operand has 9 states, 9 states have (on average 11.11111111111111) internal successors, (100), 9 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:54:56,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:54:56,596 INFO L93 Difference]: Finished difference Result 125580 states and 180547 transitions. [2024-12-02 06:54:56,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 06:54:56,597 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.11111111111111) internal successors, (100), 9 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2024-12-02 06:54:56,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:54:56,875 INFO L225 Difference]: With dead ends: 125580 [2024-12-02 06:54:56,876 INFO L226 Difference]: Without dead ends: 110282 [2024-12-02 06:54:56,911 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2024-12-02 06:54:56,911 INFO L435 NwaCegarLoop]: 233 mSDtfsCounter, 1342 mSDsluCounter, 1174 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1342 SdHoareTripleChecker+Valid, 1407 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 06:54:56,911 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1342 Valid, 1407 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 06:54:56,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110282 states. [2024-12-02 06:54:58,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110282 to 30652. [2024-12-02 06:54:58,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30652 states, 30651 states have (on average 1.432220808456494) internal successors, (43899), 30651 states have internal predecessors, (43899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:54:58,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30652 states to 30652 states and 43899 transitions. [2024-12-02 06:54:58,313 INFO L78 Accepts]: Start accepts. Automaton has 30652 states and 43899 transitions. Word has length 103 [2024-12-02 06:54:58,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:54:58,313 INFO L471 AbstractCegarLoop]: Abstraction has 30652 states and 43899 transitions. [2024-12-02 06:54:58,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.11111111111111) internal successors, (100), 9 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:54:58,314 INFO L276 IsEmpty]: Start isEmpty. Operand 30652 states and 43899 transitions. [2024-12-02 06:54:58,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-12-02 06:54:58,319 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:54:58,319 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:54:58,319 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-02 06:54:58,319 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:54:58,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:54:58,320 INFO L85 PathProgramCache]: Analyzing trace with hash 112368945, now seen corresponding path program 1 times [2024-12-02 06:54:58,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:54:58,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797793723] [2024-12-02 06:54:58,320 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:54:58,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:54:58,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:54:58,565 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-02 06:54:58,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:54:58,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797793723] [2024-12-02 06:54:58,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797793723] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:54:58,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:54:58,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 06:54:58,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357176808] [2024-12-02 06:54:58,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:54:58,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 06:54:58,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:54:58,566 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 06:54:58,566 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-12-02 06:54:58,567 INFO L87 Difference]: Start difference. First operand 30652 states and 43899 transitions. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:55:00,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:55:00,449 INFO L93 Difference]: Finished difference Result 140876 states and 202371 transitions. [2024-12-02 06:55:00,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 06:55:00,450 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2024-12-02 06:55:00,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:55:00,645 INFO L225 Difference]: With dead ends: 140876 [2024-12-02 06:55:00,645 INFO L226 Difference]: Without dead ends: 125578 [2024-12-02 06:55:00,669 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2024-12-02 06:55:00,670 INFO L435 NwaCegarLoop]: 230 mSDtfsCounter, 1386 mSDsluCounter, 1163 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1386 SdHoareTripleChecker+Valid, 1393 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 06:55:00,670 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1386 Valid, 1393 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 06:55:00,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125578 states. [2024-12-02 06:55:01,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125578 to 53628. [2024-12-02 06:55:01,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53628 states, 53627 states have (on average 1.4260540399425663) internal successors, (76475), 53627 states have internal predecessors, (76475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:55:02,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53628 states to 53628 states and 76475 transitions. [2024-12-02 06:55:02,063 INFO L78 Accepts]: Start accepts. Automaton has 53628 states and 76475 transitions. Word has length 103 [2024-12-02 06:55:02,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:55:02,064 INFO L471 AbstractCegarLoop]: Abstraction has 53628 states and 76475 transitions. [2024-12-02 06:55:02,064 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:55:02,064 INFO L276 IsEmpty]: Start isEmpty. Operand 53628 states and 76475 transitions. [2024-12-02 06:55:02,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-12-02 06:55:02,068 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:55:02,068 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:55:02,068 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-12-02 06:55:02,068 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:55:02,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:55:02,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1350630961, now seen corresponding path program 1 times [2024-12-02 06:55:02,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:55:02,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372545479] [2024-12-02 06:55:02,069 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:55:02,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:55:02,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:55:02,429 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-02 06:55:02,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:55:02,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372545479] [2024-12-02 06:55:02,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372545479] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:55:02,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:55:02,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 06:55:02,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936589136] [2024-12-02 06:55:02,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:55:02,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 06:55:02,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:55:02,430 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 06:55:02,430 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-12-02 06:55:02,430 INFO L87 Difference]: Start difference. First operand 53628 states and 76475 transitions. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:55:04,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:55:04,988 INFO L93 Difference]: Finished difference Result 156172 states and 224195 transitions. [2024-12-02 06:55:04,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 06:55:04,989 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2024-12-02 06:55:04,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:55:05,127 INFO L225 Difference]: With dead ends: 156172 [2024-12-02 06:55:05,127 INFO L226 Difference]: Without dead ends: 140874 [2024-12-02 06:55:05,152 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2024-12-02 06:55:05,153 INFO L435 NwaCegarLoop]: 227 mSDtfsCounter, 1548 mSDsluCounter, 1079 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1548 SdHoareTripleChecker+Valid, 1306 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 06:55:05,153 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1548 Valid, 1306 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 06:55:05,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140874 states. [2024-12-02 06:55:06,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140874 to 68924. [2024-12-02 06:55:06,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68924 states, 68923 states have (on average 1.4262147614004033) internal successors, (98299), 68923 states have internal predecessors, (98299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:55:06,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68924 states to 68924 states and 98299 transitions. [2024-12-02 06:55:06,753 INFO L78 Accepts]: Start accepts. Automaton has 68924 states and 98299 transitions. Word has length 103 [2024-12-02 06:55:06,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:55:06,753 INFO L471 AbstractCegarLoop]: Abstraction has 68924 states and 98299 transitions. [2024-12-02 06:55:06,753 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:55:06,753 INFO L276 IsEmpty]: Start isEmpty. Operand 68924 states and 98299 transitions. [2024-12-02 06:55:06,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-12-02 06:55:06,757 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:55:06,757 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:55:06,757 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-12-02 06:55:06,757 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:55:06,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:55:06,758 INFO L85 PathProgramCache]: Analyzing trace with hash 916095025, now seen corresponding path program 1 times [2024-12-02 06:55:06,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:55:06,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892179835] [2024-12-02 06:55:06,758 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:55:06,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:55:06,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:55:06,928 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-12-02 06:55:06,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:55:06,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892179835] [2024-12-02 06:55:06,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892179835] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:55:06,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:55:06,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 06:55:06,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753215670] [2024-12-02 06:55:06,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:55:06,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 06:55:06,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:55:06,930 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 06:55:06,930 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-12-02 06:55:06,930 INFO L87 Difference]: Start difference. First operand 68924 states and 98299 transitions. Second operand has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:55:09,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:55:09,793 INFO L93 Difference]: Finished difference Result 171468 states and 246019 transitions. [2024-12-02 06:55:09,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 06:55:09,794 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2024-12-02 06:55:09,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:55:09,971 INFO L225 Difference]: With dead ends: 171468 [2024-12-02 06:55:09,971 INFO L226 Difference]: Without dead ends: 156170 [2024-12-02 06:55:10,003 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2024-12-02 06:55:10,004 INFO L435 NwaCegarLoop]: 226 mSDtfsCounter, 1439 mSDsluCounter, 1152 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1439 SdHoareTripleChecker+Valid, 1378 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 06:55:10,004 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1439 Valid, 1378 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 06:55:10,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156170 states. [2024-12-02 06:55:12,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156170 to 84220. [2024-12-02 06:55:12,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84220 states, 84219 states have (on average 1.4263171018416272) internal successors, (120123), 84219 states have internal predecessors, (120123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:55:12,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84220 states to 84220 states and 120123 transitions. [2024-12-02 06:55:12,347 INFO L78 Accepts]: Start accepts. Automaton has 84220 states and 120123 transitions. Word has length 103 [2024-12-02 06:55:12,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:55:12,347 INFO L471 AbstractCegarLoop]: Abstraction has 84220 states and 120123 transitions. [2024-12-02 06:55:12,347 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:55:12,347 INFO L276 IsEmpty]: Start isEmpty. Operand 84220 states and 120123 transitions. [2024-12-02 06:55:12,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-12-02 06:55:12,350 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:55:12,351 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:55:12,351 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-12-02 06:55:12,351 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:55:12,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:55:12,351 INFO L85 PathProgramCache]: Analyzing trace with hash -864837839, now seen corresponding path program 1 times [2024-12-02 06:55:12,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:55:12,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238854955] [2024-12-02 06:55:12,351 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:55:12,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:55:12,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:55:12,509 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-02 06:55:12,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:55:12,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238854955] [2024-12-02 06:55:12,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238854955] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:55:12,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:55:12,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 06:55:12,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299266192] [2024-12-02 06:55:12,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:55:12,510 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 06:55:12,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:55:12,510 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 06:55:12,510 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-12-02 06:55:12,510 INFO L87 Difference]: Start difference. First operand 84220 states and 120123 transitions. Second operand has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 9 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:55:15,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:55:15,307 INFO L93 Difference]: Finished difference Result 186764 states and 267843 transitions. [2024-12-02 06:55:15,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 06:55:15,308 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 9 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2024-12-02 06:55:15,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:55:15,471 INFO L225 Difference]: With dead ends: 186764 [2024-12-02 06:55:15,471 INFO L226 Difference]: Without dead ends: 171466 [2024-12-02 06:55:15,498 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2024-12-02 06:55:15,499 INFO L435 NwaCegarLoop]: 232 mSDtfsCounter, 1272 mSDsluCounter, 1276 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1272 SdHoareTripleChecker+Valid, 1508 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 06:55:15,499 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1272 Valid, 1508 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 06:55:15,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171466 states. [2024-12-02 06:55:18,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171466 to 99516. [2024-12-02 06:55:18,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99516 states, 99515 states have (on average 1.4263879817112999) internal successors, (141947), 99515 states have internal predecessors, (141947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:55:18,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99516 states to 99516 states and 141947 transitions. [2024-12-02 06:55:18,378 INFO L78 Accepts]: Start accepts. Automaton has 99516 states and 141947 transitions. Word has length 103 [2024-12-02 06:55:18,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:55:18,378 INFO L471 AbstractCegarLoop]: Abstraction has 99516 states and 141947 transitions. [2024-12-02 06:55:18,378 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 9 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:55:18,378 INFO L276 IsEmpty]: Start isEmpty. Operand 99516 states and 141947 transitions. [2024-12-02 06:55:18,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-12-02 06:55:18,383 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:55:18,384 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:55:18,384 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-12-02 06:55:18,384 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:55:18,384 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:55:18,384 INFO L85 PathProgramCache]: Analyzing trace with hash -151487439, now seen corresponding path program 1 times [2024-12-02 06:55:18,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:55:18,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098305922] [2024-12-02 06:55:18,385 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:55:18,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:55:18,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:55:18,596 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 06:55:18,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:55:18,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098305922] [2024-12-02 06:55:18,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098305922] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:55:18,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:55:18,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 06:55:18,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075119497] [2024-12-02 06:55:18,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:55:18,597 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 06:55:18,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:55:18,597 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 06:55:18,597 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-12-02 06:55:18,597 INFO L87 Difference]: Start difference. First operand 99516 states and 141947 transitions. Second operand has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 9 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:55:22,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:55:22,356 INFO L93 Difference]: Finished difference Result 202060 states and 289667 transitions. [2024-12-02 06:55:22,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 06:55:22,357 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 9 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2024-12-02 06:55:22,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:55:22,540 INFO L225 Difference]: With dead ends: 202060 [2024-12-02 06:55:22,540 INFO L226 Difference]: Without dead ends: 186762 [2024-12-02 06:55:22,571 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2024-12-02 06:55:22,571 INFO L435 NwaCegarLoop]: 235 mSDtfsCounter, 1267 mSDsluCounter, 1439 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1267 SdHoareTripleChecker+Valid, 1674 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 06:55:22,571 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1267 Valid, 1674 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 06:55:22,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186762 states. [2024-12-02 06:55:25,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186762 to 114812. [2024-12-02 06:55:25,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114812 states, 114811 states have (on average 1.4264399752636943) internal successors, (163771), 114811 states have internal predecessors, (163771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:55:25,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114812 states to 114812 states and 163771 transitions. [2024-12-02 06:55:25,653 INFO L78 Accepts]: Start accepts. Automaton has 114812 states and 163771 transitions. Word has length 103 [2024-12-02 06:55:25,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:55:25,654 INFO L471 AbstractCegarLoop]: Abstraction has 114812 states and 163771 transitions. [2024-12-02 06:55:25,654 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 9 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:55:25,654 INFO L276 IsEmpty]: Start isEmpty. Operand 114812 states and 163771 transitions. [2024-12-02 06:55:25,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-12-02 06:55:25,660 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:55:25,660 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:55:25,660 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-12-02 06:55:25,661 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:55:25,661 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:55:25,661 INFO L85 PathProgramCache]: Analyzing trace with hash -318040052, now seen corresponding path program 1 times [2024-12-02 06:55:25,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:55:25,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770785649] [2024-12-02 06:55:25,661 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:55:25,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:55:25,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:55:25,864 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 06:55:25,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:55:25,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770785649] [2024-12-02 06:55:25,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770785649] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:55:25,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:55:25,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 06:55:25,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55485753] [2024-12-02 06:55:25,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:55:25,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 06:55:25,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:55:25,865 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 06:55:25,865 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-12-02 06:55:25,865 INFO L87 Difference]: Start difference. First operand 114812 states and 163771 transitions. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:55:30,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:55:30,261 INFO L93 Difference]: Finished difference Result 208268 states and 298691 transitions. [2024-12-02 06:55:30,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 06:55:30,262 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2024-12-02 06:55:30,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:55:30,671 INFO L225 Difference]: With dead ends: 208268 [2024-12-02 06:55:30,671 INFO L226 Difference]: Without dead ends: 197514 [2024-12-02 06:55:30,705 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2024-12-02 06:55:30,706 INFO L435 NwaCegarLoop]: 234 mSDtfsCounter, 1333 mSDsluCounter, 1451 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1333 SdHoareTripleChecker+Valid, 1685 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 06:55:30,706 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1333 Valid, 1685 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 06:55:30,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197514 states. [2024-12-02 06:55:34,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197514 to 125564. [2024-12-02 06:55:34,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125564 states, 125563 states have (on average 1.4276419008784436) internal successors, (179259), 125563 states have internal predecessors, (179259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:55:34,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125564 states to 125564 states and 179259 transitions. [2024-12-02 06:55:34,408 INFO L78 Accepts]: Start accepts. Automaton has 125564 states and 179259 transitions. Word has length 105 [2024-12-02 06:55:34,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:55:34,408 INFO L471 AbstractCegarLoop]: Abstraction has 125564 states and 179259 transitions. [2024-12-02 06:55:34,408 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:55:34,408 INFO L276 IsEmpty]: Start isEmpty. Operand 125564 states and 179259 transitions. [2024-12-02 06:55:34,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-12-02 06:55:34,416 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:55:34,416 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:55:34,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-12-02 06:55:34,416 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:55:34,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:55:34,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1453159145, now seen corresponding path program 1 times [2024-12-02 06:55:34,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:55:34,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901644775] [2024-12-02 06:55:34,417 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:55:34,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:55:34,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:55:34,524 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:55:34,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:55:34,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901644775] [2024-12-02 06:55:34,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901644775] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:55:34,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:55:34,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:55:34,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897509734] [2024-12-02 06:55:34,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:55:34,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:55:34,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:55:34,526 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:55:34,526 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:55:34,526 INFO L87 Difference]: Start difference. First operand 125564 states and 179259 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:55:36,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:55:36,608 INFO L93 Difference]: Finished difference Result 216984 states and 310934 transitions. [2024-12-02 06:55:36,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:55:36,609 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2024-12-02 06:55:36,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:55:36,697 INFO L225 Difference]: With dead ends: 216984 [2024-12-02 06:55:36,697 INFO L226 Difference]: Without dead ends: 91478 [2024-12-02 06:55:36,754 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 06:55:36,755 INFO L435 NwaCegarLoop]: 202 mSDtfsCounter, 66 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:55:36,755 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 333 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:55:36,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91478 states. [2024-12-02 06:55:39,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91478 to 91476. [2024-12-02 06:55:39,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91476 states, 91475 states have (on average 1.4281825635419514) internal successors, (130643), 91475 states have internal predecessors, (130643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:55:39,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91476 states to 91476 states and 130643 transitions. [2024-12-02 06:55:39,206 INFO L78 Accepts]: Start accepts. Automaton has 91476 states and 130643 transitions. Word has length 105 [2024-12-02 06:55:39,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:55:39,206 INFO L471 AbstractCegarLoop]: Abstraction has 91476 states and 130643 transitions. [2024-12-02 06:55:39,206 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:55:39,206 INFO L276 IsEmpty]: Start isEmpty. Operand 91476 states and 130643 transitions. [2024-12-02 06:55:39,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-12-02 06:55:39,209 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:55:39,209 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:55:39,209 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-12-02 06:55:39,209 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:55:39,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:55:39,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1147535880, now seen corresponding path program 1 times [2024-12-02 06:55:39,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:55:39,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33406004] [2024-12-02 06:55:39,210 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:55:39,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:55:39,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:55:39,279 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:55:39,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:55:39,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33406004] [2024-12-02 06:55:39,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33406004] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:55:39,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:55:39,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:55:39,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121367291] [2024-12-02 06:55:39,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:55:39,280 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:55:39,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:55:39,280 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:55:39,281 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:55:39,281 INFO L87 Difference]: Start difference. First operand 91476 states and 130643 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:55:40,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:55:40,236 INFO L93 Difference]: Finished difference Result 137176 states and 195925 transitions. [2024-12-02 06:55:40,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:55:40,236 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2024-12-02 06:55:40,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:55:40,276 INFO L225 Difference]: With dead ends: 137176 [2024-12-02 06:55:40,277 INFO L226 Difference]: Without dead ends: 45782 [2024-12-02 06:55:40,315 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 06:55:40,317 INFO L435 NwaCegarLoop]: 195 mSDtfsCounter, 61 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:55:40,317 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 318 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:55:40,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45782 states. [2024-12-02 06:55:41,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45782 to 45780. [2024-12-02 06:55:41,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45780 states, 45779 states have (on average 1.4159112256711592) internal successors, (64819), 45779 states have internal predecessors, (64819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:55:41,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45780 states to 45780 states and 64819 transitions. [2024-12-02 06:55:41,480 INFO L78 Accepts]: Start accepts. Automaton has 45780 states and 64819 transitions. Word has length 106 [2024-12-02 06:55:41,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:55:41,480 INFO L471 AbstractCegarLoop]: Abstraction has 45780 states and 64819 transitions. [2024-12-02 06:55:41,480 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:55:41,480 INFO L276 IsEmpty]: Start isEmpty. Operand 45780 states and 64819 transitions. [2024-12-02 06:55:41,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-12-02 06:55:41,482 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:55:41,482 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:55:41,482 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-12-02 06:55:41,482 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:55:41,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:55:41,483 INFO L85 PathProgramCache]: Analyzing trace with hash 641769338, now seen corresponding path program 1 times [2024-12-02 06:55:41,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:55:41,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969199472] [2024-12-02 06:55:41,483 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:55:41,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:55:41,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:55:41,565 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:55:41,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:55:41,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969199472] [2024-12-02 06:55:41,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969199472] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:55:41,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:55:41,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:55:41,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584552565] [2024-12-02 06:55:41,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:55:41,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:55:41,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:55:41,566 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:55:41,566 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:55:41,567 INFO L87 Difference]: Start difference. First operand 45780 states and 64819 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:55:42,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:55:42,159 INFO L93 Difference]: Finished difference Result 68632 states and 97189 transitions. [2024-12-02 06:55:42,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:55:42,160 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2024-12-02 06:55:42,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:55:42,176 INFO L225 Difference]: With dead ends: 68632 [2024-12-02 06:55:42,177 INFO L226 Difference]: Without dead ends: 22934 [2024-12-02 06:55:42,195 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 06:55:42,195 INFO L435 NwaCegarLoop]: 188 mSDtfsCounter, 58 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:55:42,195 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 303 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:55:42,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22934 states. [2024-12-02 06:55:42,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22934 to 22932. [2024-12-02 06:55:42,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22932 states, 22931 states have (on average 1.403296847062928) internal successors, (32179), 22931 states have internal predecessors, (32179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:55:42,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22932 states to 22932 states and 32179 transitions. [2024-12-02 06:55:42,706 INFO L78 Accepts]: Start accepts. Automaton has 22932 states and 32179 transitions. Word has length 108 [2024-12-02 06:55:42,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:55:42,707 INFO L471 AbstractCegarLoop]: Abstraction has 22932 states and 32179 transitions. [2024-12-02 06:55:42,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:55:42,707 INFO L276 IsEmpty]: Start isEmpty. Operand 22932 states and 32179 transitions. [2024-12-02 06:55:42,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-12-02 06:55:42,708 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:55:42,708 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:55:42,708 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-12-02 06:55:42,708 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:55:42,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:55:42,709 INFO L85 PathProgramCache]: Analyzing trace with hash -837082260, now seen corresponding path program 1 times [2024-12-02 06:55:42,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:55:42,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992968706] [2024-12-02 06:55:42,709 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:55:42,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:55:42,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:55:42,808 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:55:42,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:55:42,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992968706] [2024-12-02 06:55:42,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992968706] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:55:42,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:55:42,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:55:42,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495376916] [2024-12-02 06:55:42,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:55:42,809 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:55:42,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:55:42,810 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:55:42,810 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:55:42,810 INFO L87 Difference]: Start difference. First operand 22932 states and 32179 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:55:43,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:55:43,051 INFO L93 Difference]: Finished difference Result 34360 states and 48229 transitions. [2024-12-02 06:55:43,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:55:43,052 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2024-12-02 06:55:43,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:55:43,062 INFO L225 Difference]: With dead ends: 34360 [2024-12-02 06:55:43,062 INFO L226 Difference]: Without dead ends: 11510 [2024-12-02 06:55:43,072 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 06:55:43,073 INFO L435 NwaCegarLoop]: 181 mSDtfsCounter, 55 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:55:43,073 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 288 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:55:43,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11510 states. [2024-12-02 06:55:43,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11510 to 11508. [2024-12-02 06:55:43,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11508 states, 11507 states have (on average 1.390023463978448) internal successors, (15995), 11507 states have internal predecessors, (15995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:55:43,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11508 states to 11508 states and 15995 transitions. [2024-12-02 06:55:43,321 INFO L78 Accepts]: Start accepts. Automaton has 11508 states and 15995 transitions. Word has length 110 [2024-12-02 06:55:43,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:55:43,321 INFO L471 AbstractCegarLoop]: Abstraction has 11508 states and 15995 transitions. [2024-12-02 06:55:43,321 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:55:43,321 INFO L276 IsEmpty]: Start isEmpty. Operand 11508 states and 15995 transitions. [2024-12-02 06:55:43,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-12-02 06:55:43,322 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:55:43,322 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:55:43,322 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-12-02 06:55:43,322 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:55:43,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:55:43,323 INFO L85 PathProgramCache]: Analyzing trace with hash -4674082, now seen corresponding path program 1 times [2024-12-02 06:55:43,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:55:43,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150521502] [2024-12-02 06:55:43,323 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:55:43,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:55:43,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:55:43,413 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:55:43,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:55:43,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150521502] [2024-12-02 06:55:43,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150521502] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:55:43,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:55:43,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:55:43,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920708892] [2024-12-02 06:55:43,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:55:43,414 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:55:43,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:55:43,414 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:55:43,414 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:55:43,415 INFO L87 Difference]: Start difference. First operand 11508 states and 15995 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:55:43,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:55:43,532 INFO L93 Difference]: Finished difference Result 17224 states and 23953 transitions. [2024-12-02 06:55:43,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:55:43,532 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2024-12-02 06:55:43,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:55:43,539 INFO L225 Difference]: With dead ends: 17224 [2024-12-02 06:55:43,539 INFO L226 Difference]: Without dead ends: 5798 [2024-12-02 06:55:43,544 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 06:55:43,544 INFO L435 NwaCegarLoop]: 174 mSDtfsCounter, 52 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:55:43,544 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 273 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:55:43,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5798 states. [2024-12-02 06:55:43,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5798 to 5796. [2024-12-02 06:55:43,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5796 states, 5795 states have (on average 1.3754961173425366) internal successors, (7971), 5795 states have internal predecessors, (7971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:55:43,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5796 states to 5796 states and 7971 transitions. [2024-12-02 06:55:43,668 INFO L78 Accepts]: Start accepts. Automaton has 5796 states and 7971 transitions. Word has length 112 [2024-12-02 06:55:43,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:55:43,668 INFO L471 AbstractCegarLoop]: Abstraction has 5796 states and 7971 transitions. [2024-12-02 06:55:43,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:55:43,668 INFO L276 IsEmpty]: Start isEmpty. Operand 5796 states and 7971 transitions. [2024-12-02 06:55:43,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-12-02 06:55:43,668 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:55:43,669 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:55:43,669 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-12-02 06:55:43,669 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:55:43,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:55:43,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1002152240, now seen corresponding path program 1 times [2024-12-02 06:55:43,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:55:43,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019083531] [2024-12-02 06:55:43,669 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:55:43,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:55:43,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:55:43,736 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:55:43,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:55:43,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019083531] [2024-12-02 06:55:43,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019083531] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:55:43,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:55:43,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:55:43,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107151268] [2024-12-02 06:55:43,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:55:43,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:55:43,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:55:43,737 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:55:43,737 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:55:43,737 INFO L87 Difference]: Start difference. First operand 5796 states and 7971 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:55:43,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:55:43,799 INFO L93 Difference]: Finished difference Result 8656 states and 11917 transitions. [2024-12-02 06:55:43,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:55:43,799 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2024-12-02 06:55:43,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:55:43,804 INFO L225 Difference]: With dead ends: 8656 [2024-12-02 06:55:43,804 INFO L226 Difference]: Without dead ends: 2942 [2024-12-02 06:55:43,807 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 06:55:43,807 INFO L435 NwaCegarLoop]: 167 mSDtfsCounter, 49 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:55:43,808 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 258 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:55:43,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2942 states. [2024-12-02 06:55:43,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2942 to 2940. [2024-12-02 06:55:43,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2940 states, 2939 states have (on average 1.3586253827832595) internal successors, (3993), 2939 states have internal predecessors, (3993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:55:43,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2940 states to 2940 states and 3993 transitions. [2024-12-02 06:55:43,870 INFO L78 Accepts]: Start accepts. Automaton has 2940 states and 3993 transitions. Word has length 114 [2024-12-02 06:55:43,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:55:43,870 INFO L471 AbstractCegarLoop]: Abstraction has 2940 states and 3993 transitions. [2024-12-02 06:55:43,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:55:43,870 INFO L276 IsEmpty]: Start isEmpty. Operand 2940 states and 3993 transitions. [2024-12-02 06:55:43,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-12-02 06:55:43,870 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:55:43,870 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:55:43,871 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-12-02 06:55:43,871 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:55:43,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:55:43,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1548834370, now seen corresponding path program 1 times [2024-12-02 06:55:43,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:55:43,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266986830] [2024-12-02 06:55:43,871 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:55:43,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:55:43,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:55:43,934 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:55:43,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:55:43,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266986830] [2024-12-02 06:55:43,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266986830] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:55:43,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:55:43,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:55:43,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601940859] [2024-12-02 06:55:43,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:55:43,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:55:43,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:55:43,935 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:55:43,935 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:55:43,936 INFO L87 Difference]: Start difference. First operand 2940 states and 3993 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:55:43,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:55:43,975 INFO L93 Difference]: Finished difference Result 4372 states and 5950 transitions. [2024-12-02 06:55:43,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:55:43,975 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2024-12-02 06:55:43,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:55:43,979 INFO L225 Difference]: With dead ends: 4372 [2024-12-02 06:55:43,979 INFO L226 Difference]: Without dead ends: 1514 [2024-12-02 06:55:43,980 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 06:55:43,981 INFO L435 NwaCegarLoop]: 160 mSDtfsCounter, 46 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:55:43,981 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 243 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:55:43,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1514 states. [2024-12-02 06:55:44,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1514 to 1512. [2024-12-02 06:55:44,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1512 states, 1511 states have (on average 1.3375248180013237) internal successors, (2021), 1511 states have internal predecessors, (2021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:55:44,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1512 states to 1512 states and 2021 transitions. [2024-12-02 06:55:44,016 INFO L78 Accepts]: Start accepts. Automaton has 1512 states and 2021 transitions. Word has length 116 [2024-12-02 06:55:44,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:55:44,016 INFO L471 AbstractCegarLoop]: Abstraction has 1512 states and 2021 transitions. [2024-12-02 06:55:44,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:55:44,016 INFO L276 IsEmpty]: Start isEmpty. Operand 1512 states and 2021 transitions. [2024-12-02 06:55:44,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-12-02 06:55:44,017 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:55:44,017 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:55:44,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-12-02 06:55:44,017 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:55:44,017 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:55:44,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1311067084, now seen corresponding path program 1 times [2024-12-02 06:55:44,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:55:44,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808695899] [2024-12-02 06:55:44,018 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:55:44,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:55:44,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:55:44,376 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:55:44,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:55:44,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808695899] [2024-12-02 06:55:44,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808695899] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:55:44,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599058788] [2024-12-02 06:55:44,377 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:55:44,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:55:44,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:55:44,379 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:55:44,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 06:55:44,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:55:44,534 INFO L256 TraceCheckSpWp]: Trace formula consists of 533 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-12-02 06:55:44,540 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:55:45,125 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:55:45,125 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:55:46,210 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:55:46,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [599058788] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:55:46,211 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:55:46,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-12-02 06:55:46,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860376361] [2024-12-02 06:55:46,211 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:55:46,212 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-12-02 06:55:46,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:55:46,212 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-12-02 06:55:46,212 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2024-12-02 06:55:46,212 INFO L87 Difference]: Start difference. First operand 1512 states and 2021 transitions. Second operand has 25 states, 25 states have (on average 12.04) internal successors, (301), 24 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:55:47,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:55:47,495 INFO L93 Difference]: Finished difference Result 7442 states and 10086 transitions. [2024-12-02 06:55:47,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-12-02 06:55:47,495 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 12.04) internal successors, (301), 24 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2024-12-02 06:55:47,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:55:47,501 INFO L225 Difference]: With dead ends: 7442 [2024-12-02 06:55:47,501 INFO L226 Difference]: Without dead ends: 6012 [2024-12-02 06:55:47,503 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 551 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=574, Invalid=2288, Unknown=0, NotChecked=0, Total=2862 [2024-12-02 06:55:47,503 INFO L435 NwaCegarLoop]: 87 mSDtfsCounter, 2376 mSDsluCounter, 843 mSDsCounter, 0 mSdLazyCounter, 834 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2376 SdHoareTripleChecker+Valid, 930 SdHoareTripleChecker+Invalid, 858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 834 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 06:55:47,503 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2376 Valid, 930 Invalid, 858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 834 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 06:55:47,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6012 states. [2024-12-02 06:55:47,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6012 to 5932. [2024-12-02 06:55:47,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5932 states, 5931 states have (on average 1.332490305176193) internal successors, (7903), 5931 states have internal predecessors, (7903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:55:47,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5932 states to 5932 states and 7903 transitions. [2024-12-02 06:55:47,634 INFO L78 Accepts]: Start accepts. Automaton has 5932 states and 7903 transitions. Word has length 118 [2024-12-02 06:55:47,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:55:47,634 INFO L471 AbstractCegarLoop]: Abstraction has 5932 states and 7903 transitions. [2024-12-02 06:55:47,634 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 12.04) internal successors, (301), 24 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:55:47,634 INFO L276 IsEmpty]: Start isEmpty. Operand 5932 states and 7903 transitions. [2024-12-02 06:55:47,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-12-02 06:55:47,635 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:55:47,635 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:55:47,642 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 06:55:47,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-12-02 06:55:47,836 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:55:47,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:55:47,836 INFO L85 PathProgramCache]: Analyzing trace with hash 372169418, now seen corresponding path program 1 times [2024-12-02 06:55:47,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:55:47,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478829028] [2024-12-02 06:55:47,836 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:55:47,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:55:47,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:55:49,239 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:55:49,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:55:49,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478829028] [2024-12-02 06:55:49,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478829028] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:55:49,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715290104] [2024-12-02 06:55:49,239 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:55:49,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:55:49,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:55:49,241 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:55:49,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 06:55:49,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:55:49,376 INFO L256 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-12-02 06:55:49,379 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:55:49,865 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:55:49,865 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:55:50,917 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:55:50,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1715290104] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:55:50,918 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:55:50,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 27 [2024-12-02 06:55:50,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182909413] [2024-12-02 06:55:50,918 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:55:50,918 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-12-02 06:55:50,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:55:50,919 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-12-02 06:55:50,919 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=669, Unknown=0, NotChecked=0, Total=756 [2024-12-02 06:55:50,920 INFO L87 Difference]: Start difference. First operand 5932 states and 7903 transitions. Second operand has 28 states, 28 states have (on average 11.928571428571429) internal successors, (334), 27 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:55:54,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:55:54,196 INFO L93 Difference]: Finished difference Result 32874 states and 44154 transitions. [2024-12-02 06:55:54,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-12-02 06:55:54,197 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 11.928571428571429) internal successors, (334), 27 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 119 [2024-12-02 06:55:54,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:55:54,215 INFO L225 Difference]: With dead ends: 32874 [2024-12-02 06:55:54,215 INFO L226 Difference]: Without dead ends: 27024 [2024-12-02 06:55:54,221 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 889 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=880, Invalid=3410, Unknown=0, NotChecked=0, Total=4290 [2024-12-02 06:55:54,222 INFO L435 NwaCegarLoop]: 101 mSDtfsCounter, 2438 mSDsluCounter, 1321 mSDsCounter, 0 mSdLazyCounter, 1317 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2438 SdHoareTripleChecker+Valid, 1422 SdHoareTripleChecker+Invalid, 1354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-12-02 06:55:54,222 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2438 Valid, 1422 Invalid, 1354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1317 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-12-02 06:55:54,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27024 states. [2024-12-02 06:55:54,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27024 to 26740. [2024-12-02 06:55:54,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26740 states, 26739 states have (on average 1.31788772953364) internal successors, (35239), 26739 states have internal predecessors, (35239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:55:54,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26740 states to 26740 states and 35239 transitions. [2024-12-02 06:55:54,831 INFO L78 Accepts]: Start accepts. Automaton has 26740 states and 35239 transitions. Word has length 119 [2024-12-02 06:55:54,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:55:54,831 INFO L471 AbstractCegarLoop]: Abstraction has 26740 states and 35239 transitions. [2024-12-02 06:55:54,831 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 11.928571428571429) internal successors, (334), 27 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:55:54,831 INFO L276 IsEmpty]: Start isEmpty. Operand 26740 states and 35239 transitions. [2024-12-02 06:55:54,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-12-02 06:55:54,833 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:55:54,833 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:55:54,840 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 06:55:55,034 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-12-02 06:55:55,034 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:55:55,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:55:55,034 INFO L85 PathProgramCache]: Analyzing trace with hash -326747606, now seen corresponding path program 1 times [2024-12-02 06:55:55,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:55:55,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644689066] [2024-12-02 06:55:55,035 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:55:55,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:55:55,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:55:55,924 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:55:55,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:55:55,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644689066] [2024-12-02 06:55:55,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644689066] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:55:55,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263289413] [2024-12-02 06:55:55,925 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:55:55,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:55:55,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:55:55,926 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:55:55,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 06:55:56,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:55:56,077 INFO L256 TraceCheckSpWp]: Trace formula consists of 542 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-12-02 06:55:56,079 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:56:01,581 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:56:01,582 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:56:04,731 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:56:04,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [263289413] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:56:04,732 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:56:04,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 16, 19] total 44 [2024-12-02 06:56:04,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198436332] [2024-12-02 06:56:04,732 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:56:04,732 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-12-02 06:56:04,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:56:04,733 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-12-02 06:56:04,733 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=265, Invalid=1627, Unknown=0, NotChecked=0, Total=1892 [2024-12-02 06:56:04,733 INFO L87 Difference]: Start difference. First operand 26740 states and 35239 transitions. Second operand has 44 states, 44 states have (on average 7.818181818181818) internal successors, (344), 44 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:56:33,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:56:33,263 INFO L93 Difference]: Finished difference Result 157948 states and 209807 transitions. [2024-12-02 06:56:33,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states. [2024-12-02 06:56:33,263 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 7.818181818181818) internal successors, (344), 44 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2024-12-02 06:56:33,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:56:33,374 INFO L225 Difference]: With dead ends: 157948 [2024-12-02 06:56:33,374 INFO L226 Difference]: Without dead ends: 131290 [2024-12-02 06:56:33,410 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14745 ImplicationChecksByTransitivity, 22.0s TimeCoverageRelationStatistics Valid=7241, Invalid=34171, Unknown=0, NotChecked=0, Total=41412 [2024-12-02 06:56:33,411 INFO L435 NwaCegarLoop]: 202 mSDtfsCounter, 5942 mSDsluCounter, 4031 mSDsCounter, 0 mSdLazyCounter, 6158 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5942 SdHoareTripleChecker+Valid, 4233 SdHoareTripleChecker+Invalid, 6288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 6158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2024-12-02 06:56:33,411 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5942 Valid, 4233 Invalid, 6288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 6158 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2024-12-02 06:56:33,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131290 states. [2024-12-02 06:56:36,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131290 to 106606. [2024-12-02 06:56:36,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106606 states, 106605 states have (on average 1.3141222269124337) internal successors, (140092), 106605 states have internal predecessors, (140092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:56:36,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106606 states to 106606 states and 140092 transitions. [2024-12-02 06:56:36,415 INFO L78 Accepts]: Start accepts. Automaton has 106606 states and 140092 transitions. Word has length 121 [2024-12-02 06:56:36,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:56:36,415 INFO L471 AbstractCegarLoop]: Abstraction has 106606 states and 140092 transitions. [2024-12-02 06:56:36,415 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 7.818181818181818) internal successors, (344), 44 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:56:36,415 INFO L276 IsEmpty]: Start isEmpty. Operand 106606 states and 140092 transitions. [2024-12-02 06:56:36,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-12-02 06:56:36,418 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:56:36,418 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:56:36,429 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 06:56:36,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:56:36,619 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:56:36,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:56:36,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1361776466, now seen corresponding path program 1 times [2024-12-02 06:56:36,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:56:36,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650679800] [2024-12-02 06:56:36,619 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:56:36,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:56:36,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:56:36,845 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:56:36,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:56:36,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650679800] [2024-12-02 06:56:36,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650679800] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:56:36,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049829835] [2024-12-02 06:56:36,846 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:56:36,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:56:36,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:56:36,847 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:56:36,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 06:56:36,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:56:36,981 INFO L256 TraceCheckSpWp]: Trace formula consists of 542 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-12-02 06:56:36,984 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:56:37,421 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:56:37,421 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:56:38,490 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:56:38,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049829835] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:56:38,490 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:56:38,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 25 [2024-12-02 06:56:38,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552847376] [2024-12-02 06:56:38,490 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:56:38,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-12-02 06:56:38,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:56:38,491 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-12-02 06:56:38,491 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=550, Unknown=0, NotChecked=0, Total=650 [2024-12-02 06:56:38,491 INFO L87 Difference]: Start difference. First operand 106606 states and 140092 transitions. Second operand has 26 states, 26 states have (on average 13.076923076923077) internal successors, (340), 25 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:56:42,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:56:42,342 INFO L93 Difference]: Finished difference Result 218028 states and 287333 transitions. [2024-12-02 06:56:42,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-12-02 06:56:42,343 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 13.076923076923077) internal successors, (340), 25 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2024-12-02 06:56:42,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:56:42,618 INFO L225 Difference]: With dead ends: 218028 [2024-12-02 06:56:42,618 INFO L226 Difference]: Without dead ends: 111778 [2024-12-02 06:56:42,656 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 651 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=653, Invalid=2539, Unknown=0, NotChecked=0, Total=3192 [2024-12-02 06:56:42,656 INFO L435 NwaCegarLoop]: 106 mSDtfsCounter, 1848 mSDsluCounter, 1407 mSDsCounter, 0 mSdLazyCounter, 1350 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1848 SdHoareTripleChecker+Valid, 1513 SdHoareTripleChecker+Invalid, 1371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-12-02 06:56:42,656 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1848 Valid, 1513 Invalid, 1371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1350 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-12-02 06:56:42,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111778 states. [2024-12-02 06:56:45,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111778 to 95446. [2024-12-02 06:56:45,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95446 states, 95445 states have (on average 1.3002462150977003) internal successors, (124102), 95445 states have internal predecessors, (124102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:56:45,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95446 states to 95446 states and 124102 transitions. [2024-12-02 06:56:45,307 INFO L78 Accepts]: Start accepts. Automaton has 95446 states and 124102 transitions. Word has length 121 [2024-12-02 06:56:45,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:56:45,307 INFO L471 AbstractCegarLoop]: Abstraction has 95446 states and 124102 transitions. [2024-12-02 06:56:45,307 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 13.076923076923077) internal successors, (340), 25 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:56:45,307 INFO L276 IsEmpty]: Start isEmpty. Operand 95446 states and 124102 transitions. [2024-12-02 06:56:45,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-12-02 06:56:45,310 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:56:45,310 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:56:45,317 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 06:56:45,511 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:56:45,511 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:56:45,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:56:45,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1730854646, now seen corresponding path program 1 times [2024-12-02 06:56:45,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:56:45,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143541890] [2024-12-02 06:56:45,511 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:56:45,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:56:45,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:56:46,632 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:56:46,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:56:46,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143541890] [2024-12-02 06:56:46,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143541890] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:56:46,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2044486926] [2024-12-02 06:56:46,633 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:56:46,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:56:46,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:56:46,638 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:56:46,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 06:56:46,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:56:46,825 INFO L256 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-12-02 06:56:46,827 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:56:47,284 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:56:47,284 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:56:48,231 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:56:48,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2044486926] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:56:48,232 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:56:48,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 27 [2024-12-02 06:56:48,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271583782] [2024-12-02 06:56:48,232 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:56:48,232 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-12-02 06:56:48,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:56:48,232 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-12-02 06:56:48,233 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=659, Unknown=0, NotChecked=0, Total=756 [2024-12-02 06:56:48,233 INFO L87 Difference]: Start difference. First operand 95446 states and 124102 transitions. Second operand has 28 states, 28 states have (on average 12.035714285714286) internal successors, (337), 27 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:56:55,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:56:55,464 INFO L93 Difference]: Finished difference Result 302850 states and 392920 transitions. [2024-12-02 06:56:55,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-12-02 06:56:55,464 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 12.035714285714286) internal successors, (337), 27 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 123 [2024-12-02 06:56:55,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:56:55,668 INFO L225 Difference]: With dead ends: 302850 [2024-12-02 06:56:55,668 INFO L226 Difference]: Without dead ends: 209886 [2024-12-02 06:56:55,723 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1019 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=858, Invalid=3432, Unknown=0, NotChecked=0, Total=4290 [2024-12-02 06:56:55,724 INFO L435 NwaCegarLoop]: 132 mSDtfsCounter, 1855 mSDsluCounter, 1307 mSDsCounter, 0 mSdLazyCounter, 1455 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1855 SdHoareTripleChecker+Valid, 1439 SdHoareTripleChecker+Invalid, 1485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-12-02 06:56:55,724 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1855 Valid, 1439 Invalid, 1485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1455 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-12-02 06:56:55,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209886 states. [2024-12-02 06:57:01,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209886 to 185528. [2024-12-02 06:57:01,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185528 states, 185527 states have (on average 1.2833334231675173) internal successors, (238093), 185527 states have internal predecessors, (238093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:57:02,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185528 states to 185528 states and 238093 transitions. [2024-12-02 06:57:02,091 INFO L78 Accepts]: Start accepts. Automaton has 185528 states and 238093 transitions. Word has length 123 [2024-12-02 06:57:02,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:57:02,091 INFO L471 AbstractCegarLoop]: Abstraction has 185528 states and 238093 transitions. [2024-12-02 06:57:02,091 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 12.035714285714286) internal successors, (337), 27 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:57:02,091 INFO L276 IsEmpty]: Start isEmpty. Operand 185528 states and 238093 transitions. [2024-12-02 06:57:02,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-12-02 06:57:02,099 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:57:02,099 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:57:02,105 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 06:57:02,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-12-02 06:57:02,299 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:57:02,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:57:02,300 INFO L85 PathProgramCache]: Analyzing trace with hash -11604586, now seen corresponding path program 1 times [2024-12-02 06:57:02,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:57:02,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561856367] [2024-12-02 06:57:02,300 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:57:02,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:57:02,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:57:03,792 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:57:03,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:57:03,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561856367] [2024-12-02 06:57:03,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561856367] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:57:03,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [615781851] [2024-12-02 06:57:03,792 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:57:03,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:57:03,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:57:03,794 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:57:03,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 06:57:03,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:57:04,001 INFO L256 TraceCheckSpWp]: Trace formula consists of 548 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-12-02 06:57:04,004 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:57:05,069 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:57:05,070 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:57:06,820 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:57:06,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [615781851] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:57:06,820 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:57:06,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 15] total 36 [2024-12-02 06:57:06,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946269193] [2024-12-02 06:57:06,821 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:57:06,821 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-12-02 06:57:06,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:57:06,822 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-12-02 06:57:06,822 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=1120, Unknown=0, NotChecked=0, Total=1260 [2024-12-02 06:57:06,822 INFO L87 Difference]: Start difference. First operand 185528 states and 238093 transitions. Second operand has 36 states, 36 states have (on average 9.36111111111111) internal successors, (337), 36 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:57:17,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:57:17,378 INFO L93 Difference]: Finished difference Result 333754 states and 425858 transitions. [2024-12-02 06:57:17,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2024-12-02 06:57:17,379 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 9.36111111111111) internal successors, (337), 36 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2024-12-02 06:57:17,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:57:17,623 INFO L225 Difference]: With dead ends: 333754 [2024-12-02 06:57:17,623 INFO L226 Difference]: Without dead ends: 258352 [2024-12-02 06:57:17,672 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2560 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1759, Invalid=7361, Unknown=0, NotChecked=0, Total=9120 [2024-12-02 06:57:17,672 INFO L435 NwaCegarLoop]: 145 mSDtfsCounter, 2718 mSDsluCounter, 2409 mSDsCounter, 0 mSdLazyCounter, 2434 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2718 SdHoareTripleChecker+Valid, 2554 SdHoareTripleChecker+Invalid, 2481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 2434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-12-02 06:57:17,673 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2718 Valid, 2554 Invalid, 2481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 2434 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-12-02 06:57:17,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258352 states. [2024-12-02 06:57:23,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258352 to 167664. [2024-12-02 06:57:23,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167664 states, 167663 states have (on average 1.278141271479098) internal successors, (214297), 167663 states have internal predecessors, (214297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:57:23,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167664 states to 167664 states and 214297 transitions. [2024-12-02 06:57:23,454 INFO L78 Accepts]: Start accepts. Automaton has 167664 states and 214297 transitions. Word has length 124 [2024-12-02 06:57:23,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:57:23,455 INFO L471 AbstractCegarLoop]: Abstraction has 167664 states and 214297 transitions. [2024-12-02 06:57:23,455 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 9.36111111111111) internal successors, (337), 36 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:57:23,455 INFO L276 IsEmpty]: Start isEmpty. Operand 167664 states and 214297 transitions. [2024-12-02 06:57:23,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-12-02 06:57:23,460 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:57:23,460 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:57:23,467 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-02 06:57:23,661 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-12-02 06:57:23,661 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:57:23,661 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:57:23,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1102192790, now seen corresponding path program 1 times [2024-12-02 06:57:23,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:57:23,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598121648] [2024-12-02 06:57:23,662 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:57:23,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:57:23,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:57:24,379 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:57:24,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:57:24,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598121648] [2024-12-02 06:57:24,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598121648] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:57:24,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1180250121] [2024-12-02 06:57:24,380 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:57:24,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:57:24,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:57:24,381 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:57:24,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 06:57:24,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:57:24,554 INFO L256 TraceCheckSpWp]: Trace formula consists of 548 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-12-02 06:57:24,556 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:57:25,470 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:57:25,470 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:57:26,882 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:57:26,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1180250121] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:57:26,882 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:57:26,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 36 [2024-12-02 06:57:26,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633473015] [2024-12-02 06:57:26,882 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:57:26,883 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-12-02 06:57:26,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:57:26,884 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-12-02 06:57:26,884 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1144, Unknown=0, NotChecked=0, Total=1260 [2024-12-02 06:57:26,884 INFO L87 Difference]: Start difference. First operand 167664 states and 214297 transitions. Second operand has 36 states, 36 states have (on average 8.63888888888889) internal successors, (311), 36 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:57:48,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:57:48,125 INFO L93 Difference]: Finished difference Result 522857 states and 669593 transitions. [2024-12-02 06:57:48,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2024-12-02 06:57:48,126 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 8.63888888888889) internal successors, (311), 36 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2024-12-02 06:57:48,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:57:48,533 INFO L225 Difference]: With dead ends: 522857 [2024-12-02 06:57:48,533 INFO L226 Difference]: Without dead ends: 431537 [2024-12-02 06:57:48,593 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3186 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=2343, Invalid=8577, Unknown=0, NotChecked=0, Total=10920 [2024-12-02 06:57:48,593 INFO L435 NwaCegarLoop]: 191 mSDtfsCounter, 8364 mSDsluCounter, 2412 mSDsCounter, 0 mSdLazyCounter, 2478 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8364 SdHoareTripleChecker+Valid, 2603 SdHoareTripleChecker+Invalid, 2559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 2478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-12-02 06:57:48,593 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8364 Valid, 2603 Invalid, 2559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 2478 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-12-02 06:57:48,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431537 states. [2024-12-02 06:57:55,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431537 to 149620. [2024-12-02 06:57:55,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149620 states, 149619 states have (on average 1.2723851917203028) internal successors, (190373), 149619 states have internal predecessors, (190373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:57:55,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149620 states to 149620 states and 190373 transitions. [2024-12-02 06:57:55,353 INFO L78 Accepts]: Start accepts. Automaton has 149620 states and 190373 transitions. Word has length 124 [2024-12-02 06:57:55,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:57:55,353 INFO L471 AbstractCegarLoop]: Abstraction has 149620 states and 190373 transitions. [2024-12-02 06:57:55,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 8.63888888888889) internal successors, (311), 36 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:57:55,353 INFO L276 IsEmpty]: Start isEmpty. Operand 149620 states and 190373 transitions. [2024-12-02 06:57:55,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-12-02 06:57:55,356 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:57:55,356 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:57:55,364 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-12-02 06:57:55,556 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-12-02 06:57:55,557 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:57:55,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:57:55,557 INFO L85 PathProgramCache]: Analyzing trace with hash -5243656, now seen corresponding path program 1 times [2024-12-02 06:57:55,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:57:55,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742449590] [2024-12-02 06:57:55,557 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:57:55,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:57:55,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:58:00,835 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:58:00,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:58:00,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742449590] [2024-12-02 06:58:00,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742449590] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:58:00,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882984963] [2024-12-02 06:58:00,836 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:58:00,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:58:00,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:58:00,837 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:58:00,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 06:58:00,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:58:00,987 INFO L256 TraceCheckSpWp]: Trace formula consists of 547 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-12-02 06:58:00,989 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:58:01,287 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 06:58:01,287 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:58:01,572 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 06:58:01,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [882984963] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:58:01,572 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:58:01,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 6, 4] total 45 [2024-12-02 06:58:01,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308992355] [2024-12-02 06:58:01,572 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:58:01,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-12-02 06:58:01,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:58:01,573 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-12-02 06:58:01,573 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=1846, Unknown=0, NotChecked=0, Total=1980 [2024-12-02 06:58:01,574 INFO L87 Difference]: Start difference. First operand 149620 states and 190373 transitions. Second operand has 45 states, 45 states have (on average 7.977777777777778) internal successors, (359), 45 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:01:27,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:01:27,553 INFO L93 Difference]: Finished difference Result 517308 states and 651800 transitions. [2024-12-02 07:01:27,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 612 states. [2024-12-02 07:01:27,554 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 7.977777777777778) internal successors, (359), 45 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2024-12-02 07:01:27,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:01:28,493 INFO L225 Difference]: With dead ends: 517308 [2024-12-02 07:01:28,494 INFO L226 Difference]: Without dead ends: 368088 [2024-12-02 07:01:28,633 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 896 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 652 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208723 ImplicationChecksByTransitivity, 170.8s TimeCoverageRelationStatistics Valid=56847, Invalid=370215, Unknown=0, NotChecked=0, Total=427062 [2024-12-02 07:01:28,635 INFO L435 NwaCegarLoop]: 355 mSDtfsCounter, 11882 mSDsluCounter, 8975 mSDsCounter, 0 mSdLazyCounter, 21207 mSolverCounterSat, 498 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11882 SdHoareTripleChecker+Valid, 9330 SdHoareTripleChecker+Invalid, 21705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 498 IncrementalHoareTripleChecker+Valid, 21207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.1s IncrementalHoareTripleChecker+Time [2024-12-02 07:01:28,635 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11882 Valid, 9330 Invalid, 21705 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [498 Valid, 21207 Invalid, 0 Unknown, 0 Unchecked, 19.1s Time] [2024-12-02 07:01:28,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368088 states. [2024-12-02 07:01:47,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368088 to 360216. [2024-12-02 07:01:48,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360216 states, 360215 states have (on average 1.22765015338062) internal successors, (442218), 360215 states have internal predecessors, (442218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:01:48,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360216 states to 360216 states and 442218 transitions. [2024-12-02 07:01:48,961 INFO L78 Accepts]: Start accepts. Automaton has 360216 states and 442218 transitions. Word has length 125 [2024-12-02 07:01:48,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:01:48,962 INFO L471 AbstractCegarLoop]: Abstraction has 360216 states and 442218 transitions. [2024-12-02 07:01:48,963 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 7.977777777777778) internal successors, (359), 45 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:01:48,963 INFO L276 IsEmpty]: Start isEmpty. Operand 360216 states and 442218 transitions. [2024-12-02 07:01:48,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-12-02 07:01:48,983 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:01:48,984 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:01:48,996 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-12-02 07:01:49,185 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:01:49,187 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:01:49,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:01:49,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1701899432, now seen corresponding path program 1 times [2024-12-02 07:01:49,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:01:49,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715066767] [2024-12-02 07:01:49,193 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:01:49,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:01:49,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:01:51,369 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:01:51,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:01:51,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715066767] [2024-12-02 07:01:51,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715066767] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:01:51,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1226208657] [2024-12-02 07:01:51,370 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:01:51,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:01:51,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:01:51,374 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:01:51,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-02 07:01:51,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:01:51,649 INFO L256 TraceCheckSpWp]: Trace formula consists of 548 conjuncts, 98 conjuncts are in the unsatisfiable core [2024-12-02 07:01:51,657 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:02:54,664 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 101 [2024-12-02 07:02:54,665 WARN L249 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory") [2024-12-02 07:02:54,666 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2024-12-02 07:02:54,674 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-12-02 07:02:54,867 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-12-02 07:02:54,869 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:281) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.checkSat(ManagedScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:85) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:947) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:786) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:374) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:323) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:555) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:416) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:195) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:291) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:181) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:160) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:106) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:317) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:428) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:314) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:275) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:132) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 45 more [2024-12-02 07:02:54,877 INFO L158 Benchmark]: Toolchain (without parser) took 486667.65ms. Allocated memory was 142.6MB in the beginning and 3.5GB in the end (delta: 3.4GB). Free memory was 116.3MB in the beginning and 2.3GB in the end (delta: -2.2GB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. [2024-12-02 07:02:54,877 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 142.6MB. Free memory is still 82.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 07:02:54,878 INFO L158 Benchmark]: CACSL2BoogieTranslator took 314.65ms. Allocated memory is still 142.6MB. Free memory was 116.3MB in the beginning and 98.8MB in the end (delta: 17.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-12-02 07:02:54,878 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.17ms. Allocated memory is still 142.6MB. Free memory was 98.8MB in the beginning and 96.0MB in the end (delta: 2.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 07:02:54,879 INFO L158 Benchmark]: Boogie Preprocessor took 50.32ms. Allocated memory is still 142.6MB. Free memory was 95.8MB in the beginning and 92.7MB in the end (delta: 3.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-02 07:02:54,879 INFO L158 Benchmark]: RCFGBuilder took 609.49ms. Allocated memory is still 142.6MB. Free memory was 92.7MB in the beginning and 56.2MB in the end (delta: 36.5MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-12-02 07:02:54,880 INFO L158 Benchmark]: TraceAbstraction took 485646.20ms. Allocated memory was 142.6MB in the beginning and 3.5GB in the end (delta: 3.4GB). Free memory was 55.6MB in the beginning and 2.3GB in the end (delta: -2.3GB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. [2024-12-02 07:02:54,883 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 142.6MB. Free memory is still 82.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 314.65ms. Allocated memory is still 142.6MB. Free memory was 116.3MB in the beginning and 98.8MB in the end (delta: 17.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.17ms. Allocated memory is still 142.6MB. Free memory was 98.8MB in the beginning and 96.0MB in the end (delta: 2.8MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 50.32ms. Allocated memory is still 142.6MB. Free memory was 95.8MB in the beginning and 92.7MB in the end (delta: 3.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 609.49ms. Allocated memory is still 142.6MB. Free memory was 92.7MB in the beginning and 56.2MB in the end (delta: 36.5MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * TraceAbstraction took 485646.20ms. Allocated memory was 142.6MB in the beginning and 3.5GB in the end (delta: 3.4GB). Free memory was 55.6MB in the beginning and 2.3GB in the end (delta: -2.3GB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/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_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_lcr.7.1.ufo.UNBOUNDED.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/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 d52f31574095462f7bebf0d97516364dd650b64428a7b12e3aa21d1b47f96325 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 07:02:56,861 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 07:02:56,940 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-12-02 07:02:56,946 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 07:02:56,946 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 07:02:56,967 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 07:02:56,968 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 07:02:56,968 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 07:02:56,968 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 07:02:56,968 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 07:02:56,968 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 07:02:56,969 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 07:02:56,969 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 07:02:56,969 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 07:02:56,969 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 07:02:56,969 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 07:02:56,969 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 07:02:56,969 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 07:02:56,969 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 07:02:56,970 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 07:02:56,970 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 07:02:56,970 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 07:02:56,970 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 07:02:56,970 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-12-02 07:02:56,970 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-12-02 07:02:56,970 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-12-02 07:02:56,970 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 07:02:56,970 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 07:02:56,970 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 07:02:56,970 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 07:02:56,970 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 07:02:56,970 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 07:02:56,970 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 07:02:56,970 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 07:02:56,971 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:02:56,971 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 07:02:56,971 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 07:02:56,971 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 07:02:56,971 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 07:02:56,971 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:02:56,971 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 07:02:56,971 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 07:02:56,971 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 07:02:56,971 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 07:02:56,971 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-12-02 07:02:56,971 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-12-02 07:02:56,972 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 07:02:56,972 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 07:02:56,972 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 07:02:56,972 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 07:02:56,972 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_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/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 -> d52f31574095462f7bebf0d97516364dd650b64428a7b12e3aa21d1b47f96325 [2024-12-02 07:02:57,199 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 07:02:57,207 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 07:02:57,210 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 07:02:57,211 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 07:02:57,211 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 07:02:57,212 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/seq-mthreaded/pals_lcr.7.1.ufo.UNBOUNDED.pals.c [2024-12-02 07:03:00,031 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/data/564e37137/d7cbd319fb33446eb4b66d2154dd8add/FLAGfefe93cff [2024-12-02 07:03:00,235 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 07:03:00,236 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/sv-benchmarks/c/seq-mthreaded/pals_lcr.7.1.ufo.UNBOUNDED.pals.c [2024-12-02 07:03:00,244 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/data/564e37137/d7cbd319fb33446eb4b66d2154dd8add/FLAGfefe93cff [2024-12-02 07:03:00,255 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/data/564e37137/d7cbd319fb33446eb4b66d2154dd8add [2024-12-02 07:03:00,257 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 07:03:00,258 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 07:03:00,259 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 07:03:00,259 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 07:03:00,262 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 07:03:00,263 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:03:00" (1/1) ... [2024-12-02 07:03:00,263 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7993683b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:03:00, skipping insertion in model container [2024-12-02 07:03:00,263 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:03:00" (1/1) ... [2024-12-02 07:03:00,284 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 07:03:00,472 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_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/sv-benchmarks/c/seq-mthreaded/pals_lcr.7.1.ufo.UNBOUNDED.pals.c[20084,20097] [2024-12-02 07:03:00,474 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 07:03:00,486 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 07:03:00,540 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_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/sv-benchmarks/c/seq-mthreaded/pals_lcr.7.1.ufo.UNBOUNDED.pals.c[20084,20097] [2024-12-02 07:03:00,540 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 07:03:00,553 INFO L204 MainTranslator]: Completed translation [2024-12-02 07:03:00,554 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:03:00 WrapperNode [2024-12-02 07:03:00,554 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 07:03:00,554 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 07:03:00,554 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 07:03:00,555 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 07:03:00,559 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:03:00" (1/1) ... [2024-12-02 07:03:00,568 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:03:00" (1/1) ... [2024-12-02 07:03:00,593 INFO L138 Inliner]: procedures = 27, calls = 18, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 435 [2024-12-02 07:03:00,593 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 07:03:00,594 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 07:03:00,594 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 07:03:00,594 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 07:03:00,603 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:03:00" (1/1) ... [2024-12-02 07:03:00,603 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:03:00" (1/1) ... [2024-12-02 07:03:00,607 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:03:00" (1/1) ... [2024-12-02 07:03:00,620 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 07:03:00,620 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:03:00" (1/1) ... [2024-12-02 07:03:00,620 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:03:00" (1/1) ... [2024-12-02 07:03:00,630 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:03:00" (1/1) ... [2024-12-02 07:03:00,631 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:03:00" (1/1) ... [2024-12-02 07:03:00,638 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:03:00" (1/1) ... [2024-12-02 07:03:00,640 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:03:00" (1/1) ... [2024-12-02 07:03:00,641 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:03:00" (1/1) ... [2024-12-02 07:03:00,644 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 07:03:00,645 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 07:03:00,645 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 07:03:00,645 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 07:03:00,646 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:03:00" (1/1) ... [2024-12-02 07:03:00,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:03:00,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:03:00,671 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 07:03:00,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 07:03:00,693 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 07:03:00,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-12-02 07:03:00,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 07:03:00,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 07:03:00,778 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 07:03:00,780 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 07:03:01,283 INFO L? ?]: Removed 50 outVars from TransFormulas that were not future-live. [2024-12-02 07:03:01,283 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 07:03:01,293 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 07:03:01,293 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 07:03:01,294 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:03:01 BoogieIcfgContainer [2024-12-02 07:03:01,294 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 07:03:01,296 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 07:03:01,296 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 07:03:01,301 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 07:03:01,301 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 07:03:00" (1/3) ... [2024-12-02 07:03:01,301 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@428676a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:03:01, skipping insertion in model container [2024-12-02 07:03:01,302 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:03:00" (2/3) ... [2024-12-02 07:03:01,302 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@428676a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:03:01, skipping insertion in model container [2024-12-02 07:03:01,302 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:03:01" (3/3) ... [2024-12-02 07:03:01,310 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.1.ufo.UNBOUNDED.pals.c [2024-12-02 07:03:01,325 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 07:03:01,328 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_lcr.7.1.ufo.UNBOUNDED.pals.c that has 1 procedures, 116 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 07:03:01,375 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 07:03:01,383 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;@663bcf0f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 07:03:01,383 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 07:03:01,387 INFO L276 IsEmpty]: Start isEmpty. Operand has 116 states, 114 states have (on average 1.780701754385965) internal successors, (203), 115 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:03:01,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-12-02 07:03:01,392 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:03:01,392 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 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 07:03:01,393 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:03:01,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:03:01,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1728308088, now seen corresponding path program 1 times [2024-12-02 07:03:01,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 07:03:01,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [60321047] [2024-12-02 07:03:01,404 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:03:01,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:03:01,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:03:01,406 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:03:01,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 07:03:01,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:03:01,541 INFO L256 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 07:03:01,545 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:03:01,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:03:01,564 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:03:01,564 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 07:03:01,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [60321047] [2024-12-02 07:03:01,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [60321047] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:03:01,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:03:01,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 07:03:01,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467874620] [2024-12-02 07:03:01,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:03:01,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 07:03:01,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 07:03:01,588 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 07:03:01,589 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 07:03:01,591 INFO L87 Difference]: Start difference. First operand has 116 states, 114 states have (on average 1.780701754385965) internal successors, (203), 115 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:03:01,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:03:01,612 INFO L93 Difference]: Finished difference Result 173 states and 297 transitions. [2024-12-02 07:03:01,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 07:03:01,614 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-12-02 07:03:01,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:03:01,622 INFO L225 Difference]: With dead ends: 173 [2024-12-02 07:03:01,622 INFO L226 Difference]: Without dead ends: 112 [2024-12-02 07:03:01,625 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 26 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 07:03:01,627 INFO L435 NwaCegarLoop]: 196 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, 196 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 07:03:01,628 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:03:01,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2024-12-02 07:03:01,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2024-12-02 07:03:01,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 1.7657657657657657) internal successors, (196), 111 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:03:01,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 196 transitions. [2024-12-02 07:03:01,661 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 196 transitions. Word has length 27 [2024-12-02 07:03:01,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:03:01,661 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 196 transitions. [2024-12-02 07:03:01,662 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:03:01,662 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 196 transitions. [2024-12-02 07:03:01,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-12-02 07:03:01,663 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:03:01,663 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 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 07:03:01,670 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 07:03:01,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:03:01,864 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:03:01,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:03:01,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1947162806, now seen corresponding path program 1 times [2024-12-02 07:03:01,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 07:03:01,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1256037825] [2024-12-02 07:03:01,865 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:03:01,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:03:01,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:03:01,867 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:03:01,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 07:03:01,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:03:01,976 INFO L256 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 07:03:01,978 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:03:02,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:03:02,027 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:03:02,027 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 07:03:02,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1256037825] [2024-12-02 07:03:02,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1256037825] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:03:02,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:03:02,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 07:03:02,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286384021] [2024-12-02 07:03:02,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:03:02,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 07:03:02,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 07:03:02,029 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 07:03:02,029 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 07:03:02,029 INFO L87 Difference]: Start difference. First operand 112 states and 196 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:03:02,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:03:02,144 INFO L93 Difference]: Finished difference Result 172 states and 290 transitions. [2024-12-02 07:03:02,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 07:03:02,145 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-12-02 07:03:02,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:03:02,146 INFO L225 Difference]: With dead ends: 172 [2024-12-02 07:03:02,146 INFO L226 Difference]: Without dead ends: 112 [2024-12-02 07:03:02,146 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 07:03:02,147 INFO L435 NwaCegarLoop]: 194 mSDtfsCounter, 0 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 721 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 07:03:02,147 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 721 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 07:03:02,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2024-12-02 07:03:02,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2024-12-02 07:03:02,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 1.3153153153153154) internal successors, (146), 111 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:03:02,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 146 transitions. [2024-12-02 07:03:02,155 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 146 transitions. Word has length 27 [2024-12-02 07:03:02,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:03:02,155 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 146 transitions. [2024-12-02 07:03:02,156 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:03:02,156 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 146 transitions. [2024-12-02 07:03:02,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-12-02 07:03:02,157 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:03:02,158 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:03:02,166 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 07:03:02,358 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:03:02,358 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:03:02,359 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:03:02,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1738990554, now seen corresponding path program 1 times [2024-12-02 07:03:02,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 07:03:02,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [16067623] [2024-12-02 07:03:02,359 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:03:02,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:03:02,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:03:02,361 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:03:02,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 07:03:02,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:03:02,474 INFO L256 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-12-02 07:03:02,477 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:03:04,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:03:04,110 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:03:04,110 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 07:03:04,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [16067623] [2024-12-02 07:03:04,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [16067623] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:03:04,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:03:04,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 07:03:04,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471699128] [2024-12-02 07:03:04,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:03:04,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 07:03:04,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 07:03:04,112 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 07:03:04,112 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-12-02 07:03:04,112 INFO L87 Difference]: Start difference. First operand 112 states and 146 transitions. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:03:04,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:03:04,457 INFO L93 Difference]: Finished difference Result 560 states and 866 transitions. [2024-12-02 07:03:04,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 07:03:04,458 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2024-12-02 07:03:04,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:03:04,461 INFO L225 Difference]: With dead ends: 560 [2024-12-02 07:03:04,461 INFO L226 Difference]: Without dead ends: 504 [2024-12-02 07:03:04,461 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-12-02 07:03:04,462 INFO L435 NwaCegarLoop]: 140 mSDtfsCounter, 868 mSDsluCounter, 766 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 868 SdHoareTripleChecker+Valid, 906 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 07:03:04,462 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [868 Valid, 906 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 07:03:04,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2024-12-02 07:03:04,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 220. [2024-12-02 07:03:04,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 219 states have (on average 1.4657534246575343) internal successors, (321), 219 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:03:04,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 321 transitions. [2024-12-02 07:03:04,481 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 321 transitions. Word has length 76 [2024-12-02 07:03:04,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:03:04,482 INFO L471 AbstractCegarLoop]: Abstraction has 220 states and 321 transitions. [2024-12-02 07:03:04,482 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:03:04,482 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 321 transitions. [2024-12-02 07:03:04,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-12-02 07:03:04,484 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:03:04,484 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:03:04,491 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 07:03:04,685 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:03:04,685 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:03:04,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:03:04,685 INFO L85 PathProgramCache]: Analyzing trace with hash -988047094, now seen corresponding path program 1 times [2024-12-02 07:03:04,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 07:03:04,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1132746862] [2024-12-02 07:03:04,686 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:03:04,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:03:04,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:03:04,687 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:03:04,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 07:03:04,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:03:04,790 INFO L256 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 07:03:04,792 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:03:04,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:03:04,813 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:03:04,813 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 07:03:04,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1132746862] [2024-12-02 07:03:04,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1132746862] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:03:04,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:03:04,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:03:04,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730738976] [2024-12-02 07:03:04,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:03:04,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:03:04,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 07:03:04,815 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:03:04,815 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:03:04,815 INFO L87 Difference]: Start difference. First operand 220 states and 321 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:03:04,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:03:04,844 INFO L93 Difference]: Finished difference Result 529 states and 818 transitions. [2024-12-02 07:03:04,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:03:04,844 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2024-12-02 07:03:04,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:03:04,846 INFO L225 Difference]: With dead ends: 529 [2024-12-02 07:03:04,846 INFO L226 Difference]: Without dead ends: 365 [2024-12-02 07:03:04,847 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 76 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 07:03:04,847 INFO L435 NwaCegarLoop]: 211 mSDtfsCounter, 76 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:03:04,848 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 345 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:03:04,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2024-12-02 07:03:04,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 357. [2024-12-02 07:03:04,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 356 states have (on average 1.5084269662921348) internal successors, (537), 356 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:03:04,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 537 transitions. [2024-12-02 07:03:04,866 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 537 transitions. Word has length 78 [2024-12-02 07:03:04,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:03:04,866 INFO L471 AbstractCegarLoop]: Abstraction has 357 states and 537 transitions. [2024-12-02 07:03:04,866 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:03:04,866 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 537 transitions. [2024-12-02 07:03:04,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-12-02 07:03:04,868 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:03:04,868 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:03:04,877 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 07:03:05,068 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:03:05,069 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:03:05,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:03:05,069 INFO L85 PathProgramCache]: Analyzing trace with hash -514880688, now seen corresponding path program 1 times [2024-12-02 07:03:05,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 07:03:05,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2145777778] [2024-12-02 07:03:05,070 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:03:05,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:03:05,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:03:05,072 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:03:05,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 07:03:05,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:03:05,174 INFO L256 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 07:03:05,176 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:03:05,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:03:05,288 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:03:05,288 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 07:03:05,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2145777778] [2024-12-02 07:03:05,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2145777778] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:03:05,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:03:05,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:03:05,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745807888] [2024-12-02 07:03:05,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:03:05,289 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:03:05,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 07:03:05,289 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:03:05,289 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:03:05,289 INFO L87 Difference]: Start difference. First operand 357 states and 537 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:03:05,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:03:05,318 INFO L93 Difference]: Finished difference Result 806 states and 1255 transitions. [2024-12-02 07:03:05,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:03:05,319 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2024-12-02 07:03:05,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:03:05,321 INFO L225 Difference]: With dead ends: 806 [2024-12-02 07:03:05,322 INFO L226 Difference]: Without dead ends: 505 [2024-12-02 07:03:05,322 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 77 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 07:03:05,323 INFO L435 NwaCegarLoop]: 142 mSDtfsCounter, 61 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:03:05,324 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 225 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:03:05,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2024-12-02 07:03:05,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 500. [2024-12-02 07:03:05,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 499 states have (on average 1.5270541082164328) internal successors, (762), 499 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:03:05,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 762 transitions. [2024-12-02 07:03:05,342 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 762 transitions. Word has length 79 [2024-12-02 07:03:05,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:03:05,343 INFO L471 AbstractCegarLoop]: Abstraction has 500 states and 762 transitions. [2024-12-02 07:03:05,343 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:03:05,343 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 762 transitions. [2024-12-02 07:03:05,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-12-02 07:03:05,344 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:03:05,344 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:03:05,354 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 07:03:05,545 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:03:05,545 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:03:05,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:03:05,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1081887121, now seen corresponding path program 1 times [2024-12-02 07:03:05,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 07:03:05,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [434433332] [2024-12-02 07:03:05,546 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:03:05,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:03:05,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:03:05,548 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:03:05,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 07:03:05,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:03:05,643 INFO L256 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-12-02 07:03:05,646 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:03:05,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:03:05,702 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:03:05,702 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 07:03:05,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [434433332] [2024-12-02 07:03:05,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [434433332] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:03:05,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:03:05,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 07:03:05,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208254493] [2024-12-02 07:03:05,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:03:05,703 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 07:03:05,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 07:03:05,703 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 07:03:05,703 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 07:03:05,703 INFO L87 Difference]: Start difference. First operand 500 states and 762 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:03:05,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:03:05,768 INFO L93 Difference]: Finished difference Result 514 states and 779 transitions. [2024-12-02 07:03:05,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 07:03:05,769 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2024-12-02 07:03:05,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:03:05,771 INFO L225 Difference]: With dead ends: 514 [2024-12-02 07:03:05,771 INFO L226 Difference]: Without dead ends: 512 [2024-12-02 07:03:05,771 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 07:03:05,772 INFO L435 NwaCegarLoop]: 140 mSDtfsCounter, 0 mSDsluCounter, 827 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 967 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 07:03:05,772 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 967 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 07:03:05,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2024-12-02 07:03:05,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 512. [2024-12-02 07:03:05,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 512 states, 511 states have (on average 1.5107632093933463) internal successors, (772), 511 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:03:05,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 772 transitions. [2024-12-02 07:03:05,791 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 772 transitions. Word has length 79 [2024-12-02 07:03:05,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:03:05,792 INFO L471 AbstractCegarLoop]: Abstraction has 512 states and 772 transitions. [2024-12-02 07:03:05,792 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:03:05,792 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 772 transitions. [2024-12-02 07:03:05,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-12-02 07:03:05,793 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:03:05,793 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:03:05,802 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-02 07:03:05,993 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:03:05,994 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:03:05,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:03:05,994 INFO L85 PathProgramCache]: Analyzing trace with hash -610705390, now seen corresponding path program 1 times [2024-12-02 07:03:05,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 07:03:05,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [598621796] [2024-12-02 07:03:05,995 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:03:05,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:03:05,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:03:05,997 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:03:05,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 07:03:06,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:03:06,095 INFO L256 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 07:03:06,097 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:03:06,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:03:06,180 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:03:06,180 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 07:03:06,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598621796] [2024-12-02 07:03:06,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [598621796] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:03:06,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:03:06,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:03:06,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294566248] [2024-12-02 07:03:06,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:03:06,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:03:06,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 07:03:06,181 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:03:06,181 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:03:06,181 INFO L87 Difference]: Start difference. First operand 512 states and 772 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:03:06,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:03:06,209 INFO L93 Difference]: Finished difference Result 1388 states and 2141 transitions. [2024-12-02 07:03:06,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:03:06,209 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2024-12-02 07:03:06,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:03:06,213 INFO L225 Difference]: With dead ends: 1388 [2024-12-02 07:03:06,213 INFO L226 Difference]: Without dead ends: 932 [2024-12-02 07:03:06,214 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 78 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 07:03:06,214 INFO L435 NwaCegarLoop]: 213 mSDtfsCounter, 78 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:03:06,215 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 308 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:03:06,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 932 states. [2024-12-02 07:03:06,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 932 to 930. [2024-12-02 07:03:06,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 930 states, 929 states have (on average 1.5231431646932185) internal successors, (1415), 929 states have internal predecessors, (1415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:03:06,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 930 states to 930 states and 1415 transitions. [2024-12-02 07:03:06,246 INFO L78 Accepts]: Start accepts. Automaton has 930 states and 1415 transitions. Word has length 80 [2024-12-02 07:03:06,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:03:06,247 INFO L471 AbstractCegarLoop]: Abstraction has 930 states and 1415 transitions. [2024-12-02 07:03:06,247 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:03:06,247 INFO L276 IsEmpty]: Start isEmpty. Operand 930 states and 1415 transitions. [2024-12-02 07:03:06,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-12-02 07:03:06,248 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:03:06,248 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:03:06,254 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-12-02 07:03:06,448 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:03:06,448 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:03:06,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:03:06,449 INFO L85 PathProgramCache]: Analyzing trace with hash -183934446, now seen corresponding path program 1 times [2024-12-02 07:03:06,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 07:03:06,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2112400554] [2024-12-02 07:03:06,449 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:03:06,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:03:06,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:03:06,451 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:03:06,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 07:03:06,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:03:06,539 INFO L256 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 07:03:06,540 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:03:06,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:03:06,596 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:03:06,596 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 07:03:06,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2112400554] [2024-12-02 07:03:06,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2112400554] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:03:06,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:03:06,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:03:06,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677245831] [2024-12-02 07:03:06,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:03:06,597 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:03:06,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 07:03:06,598 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:03:06,598 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:03:06,598 INFO L87 Difference]: Start difference. First operand 930 states and 1415 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:03:06,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:03:06,625 INFO L93 Difference]: Finished difference Result 2606 states and 4007 transitions. [2024-12-02 07:03:06,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:03:06,625 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2024-12-02 07:03:06,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:03:06,630 INFO L225 Difference]: With dead ends: 2606 [2024-12-02 07:03:06,630 INFO L226 Difference]: Without dead ends: 1732 [2024-12-02 07:03:06,631 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 78 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 07:03:06,632 INFO L435 NwaCegarLoop]: 201 mSDtfsCounter, 74 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:03:06,632 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 304 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:03:06,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1732 states. [2024-12-02 07:03:06,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1732 to 1730. [2024-12-02 07:03:06,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1730 states, 1729 states have (on average 1.520532099479468) internal successors, (2629), 1729 states have internal predecessors, (2629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:03:06,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1730 states to 1730 states and 2629 transitions. [2024-12-02 07:03:06,671 INFO L78 Accepts]: Start accepts. Automaton has 1730 states and 2629 transitions. Word has length 80 [2024-12-02 07:03:06,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:03:06,671 INFO L471 AbstractCegarLoop]: Abstraction has 1730 states and 2629 transitions. [2024-12-02 07:03:06,671 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:03:06,671 INFO L276 IsEmpty]: Start isEmpty. Operand 1730 states and 2629 transitions. [2024-12-02 07:03:06,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-12-02 07:03:06,671 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:03:06,672 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:03:06,677 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-12-02 07:03:06,872 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:03:06,872 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:03:06,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:03:06,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1054327570, now seen corresponding path program 1 times [2024-12-02 07:03:06,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 07:03:06,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2091055735] [2024-12-02 07:03:06,873 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:03:06,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:03:06,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:03:06,874 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:03:06,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-02 07:03:06,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:03:06,960 INFO L256 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 07:03:06,962 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:03:07,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:03:07,021 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:03:07,021 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 07:03:07,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2091055735] [2024-12-02 07:03:07,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2091055735] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:03:07,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:03:07,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:03:07,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823515857] [2024-12-02 07:03:07,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:03:07,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:03:07,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 07:03:07,023 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:03:07,023 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:03:07,023 INFO L87 Difference]: Start difference. First operand 1730 states and 2629 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:03:07,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:03:07,060 INFO L93 Difference]: Finished difference Result 4934 states and 7523 transitions. [2024-12-02 07:03:07,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:03:07,061 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2024-12-02 07:03:07,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:03:07,067 INFO L225 Difference]: With dead ends: 4934 [2024-12-02 07:03:07,067 INFO L226 Difference]: Without dead ends: 3260 [2024-12-02 07:03:07,070 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 78 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 07:03:07,070 INFO L435 NwaCegarLoop]: 199 mSDtfsCounter, 72 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:03:07,070 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 306 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:03:07,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3260 states. [2024-12-02 07:03:07,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3260 to 3258. [2024-12-02 07:03:07,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3258 states, 3257 states have (on average 1.5084433527786307) internal successors, (4913), 3257 states have internal predecessors, (4913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:03:07,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3258 states to 3258 states and 4913 transitions. [2024-12-02 07:03:07,140 INFO L78 Accepts]: Start accepts. Automaton has 3258 states and 4913 transitions. Word has length 80 [2024-12-02 07:03:07,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:03:07,140 INFO L471 AbstractCegarLoop]: Abstraction has 3258 states and 4913 transitions. [2024-12-02 07:03:07,141 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:03:07,141 INFO L276 IsEmpty]: Start isEmpty. Operand 3258 states and 4913 transitions. [2024-12-02 07:03:07,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-12-02 07:03:07,141 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:03:07,141 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:03:07,148 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-12-02 07:03:07,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:03:07,342 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:03:07,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:03:07,342 INFO L85 PathProgramCache]: Analyzing trace with hash 619791634, now seen corresponding path program 1 times [2024-12-02 07:03:07,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 07:03:07,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2013179016] [2024-12-02 07:03:07,343 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:03:07,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:03:07,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:03:07,345 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:03:07,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-12-02 07:03:07,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:03:07,447 INFO L256 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 07:03:07,448 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:03:07,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:03:07,506 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:03:07,506 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 07:03:07,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013179016] [2024-12-02 07:03:07,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2013179016] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:03:07,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:03:07,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:03:07,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148458705] [2024-12-02 07:03:07,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:03:07,507 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:03:07,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 07:03:07,507 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:03:07,507 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:03:07,507 INFO L87 Difference]: Start difference. First operand 3258 states and 4913 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:03:07,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:03:07,606 INFO L93 Difference]: Finished difference Result 9374 states and 14123 transitions. [2024-12-02 07:03:07,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:03:07,606 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2024-12-02 07:03:07,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:03:07,626 INFO L225 Difference]: With dead ends: 9374 [2024-12-02 07:03:07,626 INFO L226 Difference]: Without dead ends: 6172 [2024-12-02 07:03:07,629 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 78 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 07:03:07,630 INFO L435 NwaCegarLoop]: 187 mSDtfsCounter, 68 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:03:07,630 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 302 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:03:07,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6172 states. [2024-12-02 07:03:07,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6172 to 6170. [2024-12-02 07:03:07,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6170 states, 6169 states have (on average 1.49019289998379) internal successors, (9193), 6169 states have internal predecessors, (9193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:03:07,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6170 states to 6170 states and 9193 transitions. [2024-12-02 07:03:07,828 INFO L78 Accepts]: Start accepts. Automaton has 6170 states and 9193 transitions. Word has length 80 [2024-12-02 07:03:07,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:03:07,828 INFO L471 AbstractCegarLoop]: Abstraction has 6170 states and 9193 transitions. [2024-12-02 07:03:07,828 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:03:07,828 INFO L276 IsEmpty]: Start isEmpty. Operand 6170 states and 9193 transitions. [2024-12-02 07:03:07,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-12-02 07:03:07,829 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:03:07,829 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:03:07,838 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-12-02 07:03:08,030 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:03:08,030 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:03:08,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:03:08,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1161141230, now seen corresponding path program 1 times [2024-12-02 07:03:08,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 07:03:08,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [524446063] [2024-12-02 07:03:08,031 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:03:08,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:03:08,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:03:08,032 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:03:08,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-12-02 07:03:08,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:03:08,132 INFO L256 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 07:03:08,133 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:03:08,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:03:08,190 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:03:08,190 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 07:03:08,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [524446063] [2024-12-02 07:03:08,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [524446063] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:03:08,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:03:08,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:03:08,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814927727] [2024-12-02 07:03:08,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:03:08,191 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:03:08,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 07:03:08,191 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:03:08,191 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:03:08,191 INFO L87 Difference]: Start difference. First operand 6170 states and 9193 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:03:08,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:03:08,396 INFO L93 Difference]: Finished difference Result 17822 states and 26459 transitions. [2024-12-02 07:03:08,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:03:08,396 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2024-12-02 07:03:08,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:03:08,434 INFO L225 Difference]: With dead ends: 17822 [2024-12-02 07:03:08,434 INFO L226 Difference]: Without dead ends: 11708 [2024-12-02 07:03:08,442 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 78 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 07:03:08,443 INFO L435 NwaCegarLoop]: 197 mSDtfsCounter, 70 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:03:08,443 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 308 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:03:08,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11708 states. [2024-12-02 07:03:08,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11708 to 11706. [2024-12-02 07:03:08,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11706 states, 11705 states have (on average 1.4674925245621528) internal successors, (17177), 11705 states have internal predecessors, (17177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:03:08,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11706 states to 11706 states and 17177 transitions. [2024-12-02 07:03:08,758 INFO L78 Accepts]: Start accepts. Automaton has 11706 states and 17177 transitions. Word has length 80 [2024-12-02 07:03:08,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:03:08,758 INFO L471 AbstractCegarLoop]: Abstraction has 11706 states and 17177 transitions. [2024-12-02 07:03:08,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:03:08,758 INFO L276 IsEmpty]: Start isEmpty. Operand 11706 states and 17177 transitions. [2024-12-02 07:03:08,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-12-02 07:03:08,759 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:03:08,759 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:03:08,768 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-12-02 07:03:08,959 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:03:08,960 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:03:08,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:03:08,960 INFO L85 PathProgramCache]: Analyzing trace with hash -447790830, now seen corresponding path program 1 times [2024-12-02 07:03:08,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 07:03:08,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1751705466] [2024-12-02 07:03:08,960 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:03:08,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:03:08,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:03:08,962 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:03:08,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-12-02 07:03:09,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:03:09,047 INFO L256 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 07:03:09,048 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:03:09,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:03:09,109 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:03:09,109 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 07:03:09,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1751705466] [2024-12-02 07:03:09,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1751705466] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:03:09,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:03:09,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:03:09,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917248378] [2024-12-02 07:03:09,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:03:09,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:03:09,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 07:03:09,110 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:03:09,110 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:03:09,111 INFO L87 Difference]: Start difference. First operand 11706 states and 17177 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:03:09,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:03:09,299 INFO L93 Difference]: Finished difference Result 33854 states and 49403 transitions. [2024-12-02 07:03:09,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:03:09,300 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2024-12-02 07:03:09,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:03:09,336 INFO L225 Difference]: With dead ends: 33854 [2024-12-02 07:03:09,336 INFO L226 Difference]: Without dead ends: 22204 [2024-12-02 07:03:09,344 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 78 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 07:03:09,345 INFO L435 NwaCegarLoop]: 211 mSDtfsCounter, 76 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:03:09,345 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 310 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:03:09,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22204 states. [2024-12-02 07:03:09,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22204 to 22202. [2024-12-02 07:03:09,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22202 states, 22201 states have (on average 1.4410612134588532) internal successors, (31993), 22201 states have internal predecessors, (31993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:03:09,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22202 states to 22202 states and 31993 transitions. [2024-12-02 07:03:09,729 INFO L78 Accepts]: Start accepts. Automaton has 22202 states and 31993 transitions. Word has length 80 [2024-12-02 07:03:09,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:03:09,729 INFO L471 AbstractCegarLoop]: Abstraction has 22202 states and 31993 transitions. [2024-12-02 07:03:09,730 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:03:09,730 INFO L276 IsEmpty]: Start isEmpty. Operand 22202 states and 31993 transitions. [2024-12-02 07:03:09,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-12-02 07:03:09,731 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:03:09,731 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:03:09,741 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-12-02 07:03:09,931 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:03:09,931 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:03:09,932 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:03:09,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1597757267, now seen corresponding path program 1 times [2024-12-02 07:03:09,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 07:03:09,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1562306277] [2024-12-02 07:03:09,932 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:03:09,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:03:09,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:03:09,934 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:03:09,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-12-02 07:03:10,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:03:10,030 INFO L256 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 07:03:10,032 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:03:10,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:03:10,122 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:03:10,122 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 07:03:10,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562306277] [2024-12-02 07:03:10,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1562306277] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:03:10,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:03:10,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:03:10,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816572719] [2024-12-02 07:03:10,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:03:10,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:03:10,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 07:03:10,123 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:03:10,123 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:03:10,123 INFO L87 Difference]: Start difference. First operand 22202 states and 31993 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:03:10,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:03:10,471 INFO L93 Difference]: Finished difference Result 46081 states and 66495 transitions. [2024-12-02 07:03:10,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:03:10,472 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2024-12-02 07:03:10,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:03:10,544 INFO L225 Difference]: With dead ends: 46081 [2024-12-02 07:03:10,544 INFO L226 Difference]: Without dead ends: 30974 [2024-12-02 07:03:10,556 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 80 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 07:03:10,557 INFO L435 NwaCegarLoop]: 218 mSDtfsCounter, 77 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:03:10,557 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 309 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:03:10,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30974 states. [2024-12-02 07:03:11,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30974 to 30972. [2024-12-02 07:03:11,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30972 states, 30971 states have (on average 1.4236220980917633) internal successors, (44091), 30971 states have internal predecessors, (44091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:03:11,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30972 states to 30972 states and 44091 transitions. [2024-12-02 07:03:11,190 INFO L78 Accepts]: Start accepts. Automaton has 30972 states and 44091 transitions. Word has length 82 [2024-12-02 07:03:11,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:03:11,190 INFO L471 AbstractCegarLoop]: Abstraction has 30972 states and 44091 transitions. [2024-12-02 07:03:11,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:03:11,190 INFO L276 IsEmpty]: Start isEmpty. Operand 30972 states and 44091 transitions. [2024-12-02 07:03:11,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-12-02 07:03:11,193 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:03:11,193 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:03:11,200 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-12-02 07:03:11,394 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:03:11,394 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:03:11,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:03:11,394 INFO L85 PathProgramCache]: Analyzing trace with hash -314401999, now seen corresponding path program 1 times [2024-12-02 07:03:11,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 07:03:11,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [931127651] [2024-12-02 07:03:11,395 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:03:11,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:03:11,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:03:11,396 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:03:11,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-12-02 07:03:11,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:03:11,503 INFO L256 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 07:03:11,505 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:03:11,535 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:03:11,536 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:03:11,536 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 07:03:11,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [931127651] [2024-12-02 07:03:11,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [931127651] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:03:11,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:03:11,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:03:11,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800200345] [2024-12-02 07:03:11,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:03:11,536 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:03:11,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 07:03:11,537 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:03:11,537 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:03:11,537 INFO L87 Difference]: Start difference. First operand 30972 states and 44091 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:03:11,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:03:11,822 INFO L93 Difference]: Finished difference Result 54872 states and 78230 transitions. [2024-12-02 07:03:11,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:03:11,823 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2024-12-02 07:03:11,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:03:11,846 INFO L225 Difference]: With dead ends: 54872 [2024-12-02 07:03:11,846 INFO L226 Difference]: Without dead ends: 23958 [2024-12-02 07:03:11,859 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 101 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 07:03:11,860 INFO L435 NwaCegarLoop]: 202 mSDtfsCounter, 66 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:03:11,860 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 333 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:03:11,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23958 states. [2024-12-02 07:03:12,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23958 to 22804. [2024-12-02 07:03:12,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22804 states, 22803 states have (on average 1.4266105337017059) internal successors, (32531), 22803 states have internal predecessors, (32531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:03:12,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22804 states to 22804 states and 32531 transitions. [2024-12-02 07:03:12,211 INFO L78 Accepts]: Start accepts. Automaton has 22804 states and 32531 transitions. Word has length 103 [2024-12-02 07:03:12,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:03:12,212 INFO L471 AbstractCegarLoop]: Abstraction has 22804 states and 32531 transitions. [2024-12-02 07:03:12,212 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:03:12,212 INFO L276 IsEmpty]: Start isEmpty. Operand 22804 states and 32531 transitions. [2024-12-02 07:03:12,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-12-02 07:03:12,213 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:03:12,214 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:03:12,220 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-12-02 07:03:12,414 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:03:12,414 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:03:12,414 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:03:12,414 INFO L85 PathProgramCache]: Analyzing trace with hash -318040052, now seen corresponding path program 1 times [2024-12-02 07:03:12,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 07:03:12,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [743229603] [2024-12-02 07:03:12,415 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:03:12,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:03:12,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:03:12,416 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:03:12,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-12-02 07:03:12,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:03:12,532 INFO L256 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 07:03:12,533 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:03:12,569 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:03:12,569 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:03:12,569 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 07:03:12,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [743229603] [2024-12-02 07:03:12,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [743229603] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:03:12,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:03:12,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:03:12,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590896605] [2024-12-02 07:03:12,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:03:12,570 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:03:12,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 07:03:12,570 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:03:12,571 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:03:12,571 INFO L87 Difference]: Start difference. First operand 22804 states and 32531 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:03:12,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:03:12,688 INFO L93 Difference]: Finished difference Result 33976 states and 48373 transitions. [2024-12-02 07:03:12,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:03:12,689 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2024-12-02 07:03:12,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:03:12,699 INFO L225 Difference]: With dead ends: 33976 [2024-12-02 07:03:12,699 INFO L226 Difference]: Without dead ends: 11254 [2024-12-02 07:03:12,708 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 103 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 07:03:12,709 INFO L435 NwaCegarLoop]: 195 mSDtfsCounter, 59 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:03:12,709 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 318 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:03:12,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11254 states. [2024-12-02 07:03:12,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11254 to 11252. [2024-12-02 07:03:12,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11252 states, 11251 states have (on average 1.4067194027197583) internal successors, (15827), 11251 states have internal predecessors, (15827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:03:12,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11252 states to 11252 states and 15827 transitions. [2024-12-02 07:03:12,955 INFO L78 Accepts]: Start accepts. Automaton has 11252 states and 15827 transitions. Word has length 105 [2024-12-02 07:03:12,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:03:12,955 INFO L471 AbstractCegarLoop]: Abstraction has 11252 states and 15827 transitions. [2024-12-02 07:03:12,955 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:03:12,955 INFO L276 IsEmpty]: Start isEmpty. Operand 11252 states and 15827 transitions. [2024-12-02 07:03:12,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-12-02 07:03:12,957 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:03:12,957 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:03:12,966 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-12-02 07:03:13,157 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:03:13,158 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:03:13,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:03:13,158 INFO L85 PathProgramCache]: Analyzing trace with hash -615399334, now seen corresponding path program 1 times [2024-12-02 07:03:13,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 07:03:13,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2114983599] [2024-12-02 07:03:13,158 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:03:13,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:03:13,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:03:13,160 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:03:13,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-12-02 07:03:13,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:03:13,274 INFO L256 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 07:03:13,276 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:03:13,320 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:03:13,320 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:03:13,320 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 07:03:13,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2114983599] [2024-12-02 07:03:13,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2114983599] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:03:13,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:03:13,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:03:13,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602850868] [2024-12-02 07:03:13,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:03:13,321 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:03:13,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 07:03:13,321 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:03:13,321 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:03:13,321 INFO L87 Difference]: Start difference. First operand 11252 states and 15827 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:03:13,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:03:13,415 INFO L93 Difference]: Finished difference Result 16744 states and 23509 transitions. [2024-12-02 07:03:13,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:03:13,416 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2024-12-02 07:03:13,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:03:13,421 INFO L225 Difference]: With dead ends: 16744 [2024-12-02 07:03:13,421 INFO L226 Difference]: Without dead ends: 5574 [2024-12-02 07:03:13,426 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 105 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 07:03:13,426 INFO L435 NwaCegarLoop]: 188 mSDtfsCounter, 56 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:03:13,427 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 303 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:03:13,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5574 states. [2024-12-02 07:03:13,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5574 to 5572. [2024-12-02 07:03:13,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5572 states, 5571 states have (on average 1.3848501166756417) internal successors, (7715), 5571 states have internal predecessors, (7715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:03:13,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5572 states to 5572 states and 7715 transitions. [2024-12-02 07:03:13,545 INFO L78 Accepts]: Start accepts. Automaton has 5572 states and 7715 transitions. Word has length 107 [2024-12-02 07:03:13,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:03:13,546 INFO L471 AbstractCegarLoop]: Abstraction has 5572 states and 7715 transitions. [2024-12-02 07:03:13,546 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:03:13,546 INFO L276 IsEmpty]: Start isEmpty. Operand 5572 states and 7715 transitions. [2024-12-02 07:03:13,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-12-02 07:03:13,547 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:03:13,547 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:03:13,556 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-12-02 07:03:13,747 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:03:13,748 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:03:13,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:03:13,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1048621608, now seen corresponding path program 1 times [2024-12-02 07:03:13,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 07:03:13,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1655377728] [2024-12-02 07:03:13,748 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:03:13,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:03:13,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:03:13,750 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:03:13,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-12-02 07:03:13,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:03:13,860 INFO L256 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 07:03:13,861 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:03:13,902 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:03:13,902 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:03:13,902 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 07:03:13,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655377728] [2024-12-02 07:03:13,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1655377728] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:03:13,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:03:13,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:03:13,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353581273] [2024-12-02 07:03:13,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:03:13,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:03:13,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 07:03:13,903 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:03:13,904 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:03:13,904 INFO L87 Difference]: Start difference. First operand 5572 states and 7715 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:03:13,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:03:13,956 INFO L93 Difference]: Finished difference Result 8272 states and 11437 transitions. [2024-12-02 07:03:13,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:03:13,957 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2024-12-02 07:03:13,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:03:13,960 INFO L225 Difference]: With dead ends: 8272 [2024-12-02 07:03:13,960 INFO L226 Difference]: Without dead ends: 2782 [2024-12-02 07:03:13,962 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 107 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 07:03:13,963 INFO L435 NwaCegarLoop]: 181 mSDtfsCounter, 53 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:03:13,963 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 288 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:03:13,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2782 states. [2024-12-02 07:03:14,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2782 to 2780. [2024-12-02 07:03:14,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2780 states, 2779 states have (on average 1.3598416696653473) internal successors, (3779), 2779 states have internal predecessors, (3779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:03:14,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2780 states to 2780 states and 3779 transitions. [2024-12-02 07:03:14,023 INFO L78 Accepts]: Start accepts. Automaton has 2780 states and 3779 transitions. Word has length 109 [2024-12-02 07:03:14,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:03:14,023 INFO L471 AbstractCegarLoop]: Abstraction has 2780 states and 3779 transitions. [2024-12-02 07:03:14,024 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:03:14,024 INFO L276 IsEmpty]: Start isEmpty. Operand 2780 states and 3779 transitions. [2024-12-02 07:03:14,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-12-02 07:03:14,025 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:03:14,025 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:03:14,031 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-12-02 07:03:14,225 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:03:14,225 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:03:14,226 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:03:14,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1790573174, now seen corresponding path program 1 times [2024-12-02 07:03:14,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 07:03:14,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1908154867] [2024-12-02 07:03:14,226 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:03:14,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:03:14,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:03:14,228 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:03:14,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-12-02 07:03:14,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:03:14,338 INFO L256 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 07:03:14,339 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:03:14,384 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:03:14,384 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:03:14,384 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 07:03:14,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1908154867] [2024-12-02 07:03:14,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1908154867] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:03:14,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:03:14,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:03:14,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084930854] [2024-12-02 07:03:14,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:03:14,385 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:03:14,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 07:03:14,385 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:03:14,385 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:03:14,385 INFO L87 Difference]: Start difference. First operand 2780 states and 3779 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:03:14,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:03:14,418 INFO L93 Difference]: Finished difference Result 4108 states and 5581 transitions. [2024-12-02 07:03:14,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:03:14,418 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2024-12-02 07:03:14,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:03:14,420 INFO L225 Difference]: With dead ends: 4108 [2024-12-02 07:03:14,421 INFO L226 Difference]: Without dead ends: 1410 [2024-12-02 07:03:14,422 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 109 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 07:03:14,422 INFO L435 NwaCegarLoop]: 174 mSDtfsCounter, 50 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:03:14,422 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 273 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:03:14,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1410 states. [2024-12-02 07:03:14,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1410 to 1408. [2024-12-02 07:03:14,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1408 states, 1407 states have (on average 1.3297796730632552) internal successors, (1871), 1407 states have internal predecessors, (1871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:03:14,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1408 states to 1408 states and 1871 transitions. [2024-12-02 07:03:14,453 INFO L78 Accepts]: Start accepts. Automaton has 1408 states and 1871 transitions. Word has length 111 [2024-12-02 07:03:14,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:03:14,453 INFO L471 AbstractCegarLoop]: Abstraction has 1408 states and 1871 transitions. [2024-12-02 07:03:14,453 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:03:14,453 INFO L276 IsEmpty]: Start isEmpty. Operand 1408 states and 1871 transitions. [2024-12-02 07:03:14,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-12-02 07:03:14,454 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:03:14,454 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:03:14,463 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-12-02 07:03:14,654 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:03:14,655 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:03:14,655 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:03:14,655 INFO L85 PathProgramCache]: Analyzing trace with hash 2088062020, now seen corresponding path program 1 times [2024-12-02 07:03:14,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 07:03:14,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [51337933] [2024-12-02 07:03:14,655 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:03:14,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:03:14,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:03:14,657 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:03:14,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-12-02 07:03:14,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:03:14,770 INFO L256 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 07:03:14,772 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:03:14,818 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:03:14,818 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:03:14,818 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 07:03:14,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [51337933] [2024-12-02 07:03:14,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [51337933] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:03:14,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:03:14,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:03:14,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532214610] [2024-12-02 07:03:14,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:03:14,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:03:14,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 07:03:14,819 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:03:14,819 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:03:14,819 INFO L87 Difference]: Start difference. First operand 1408 states and 1871 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:03:14,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:03:14,848 INFO L93 Difference]: Finished difference Result 2062 states and 2743 transitions. [2024-12-02 07:03:14,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:03:14,849 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2024-12-02 07:03:14,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:03:14,851 INFO L225 Difference]: With dead ends: 2062 [2024-12-02 07:03:14,851 INFO L226 Difference]: Without dead ends: 736 [2024-12-02 07:03:14,852 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 111 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 07:03:14,852 INFO L435 NwaCegarLoop]: 167 mSDtfsCounter, 47 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:03:14,853 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 258 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:03:14,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2024-12-02 07:03:14,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 734. [2024-12-02 07:03:14,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 734 states, 733 states have (on average 1.2919508867667122) internal successors, (947), 733 states have internal predecessors, (947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:03:14,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 734 states and 947 transitions. [2024-12-02 07:03:14,879 INFO L78 Accepts]: Start accepts. Automaton has 734 states and 947 transitions. Word has length 113 [2024-12-02 07:03:14,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:03:14,879 INFO L471 AbstractCegarLoop]: Abstraction has 734 states and 947 transitions. [2024-12-02 07:03:14,879 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:03:14,880 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 947 transitions. [2024-12-02 07:03:14,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-12-02 07:03:14,880 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:03:14,881 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:03:14,890 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-12-02 07:03:15,081 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:03:15,081 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:03:15,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:03:15,081 INFO L85 PathProgramCache]: Analyzing trace with hash -2067036270, now seen corresponding path program 1 times [2024-12-02 07:03:15,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 07:03:15,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1716745717] [2024-12-02 07:03:15,082 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:03:15,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:03:15,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:03:15,083 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:03:15,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-12-02 07:03:15,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:03:15,192 INFO L256 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 07:03:15,194 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:03:15,241 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:03:15,241 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:03:15,242 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 07:03:15,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716745717] [2024-12-02 07:03:15,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1716745717] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:03:15,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:03:15,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:03:15,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875050025] [2024-12-02 07:03:15,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:03:15,242 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:03:15,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 07:03:15,243 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:03:15,243 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:03:15,243 INFO L87 Difference]: Start difference. First operand 734 states and 947 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:03:15,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:03:15,259 INFO L93 Difference]: Finished difference Result 1057 states and 1369 transitions. [2024-12-02 07:03:15,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:03:15,259 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2024-12-02 07:03:15,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:03:15,261 INFO L225 Difference]: With dead ends: 1057 [2024-12-02 07:03:15,261 INFO L226 Difference]: Without dead ends: 405 [2024-12-02 07:03:15,261 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 113 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 07:03:15,262 INFO L435 NwaCegarLoop]: 160 mSDtfsCounter, 44 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:03:15,262 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 243 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:03:15,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2024-12-02 07:03:15,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 403. [2024-12-02 07:03:15,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 402 states have (on average 1.243781094527363) internal successors, (500), 402 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:03:15,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 500 transitions. [2024-12-02 07:03:15,278 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 500 transitions. Word has length 115 [2024-12-02 07:03:15,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:03:15,278 INFO L471 AbstractCegarLoop]: Abstraction has 403 states and 500 transitions. [2024-12-02 07:03:15,278 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:03:15,278 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 500 transitions. [2024-12-02 07:03:15,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-12-02 07:03:15,279 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:03:15,279 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:03:15,287 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-12-02 07:03:15,480 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:03:15,480 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:03:15,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:03:15,480 INFO L85 PathProgramCache]: Analyzing trace with hash 242060384, now seen corresponding path program 1 times [2024-12-02 07:03:15,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 07:03:15,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [731719671] [2024-12-02 07:03:15,480 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:03:15,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:03:15,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:03:15,482 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:03:15,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-12-02 07:03:15,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:03:15,590 INFO L256 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-12-02 07:03:15,592 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:03:17,140 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 07:03:17,140 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:03:17,140 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 07:03:17,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [731719671] [2024-12-02 07:03:17,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [731719671] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:03:17,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:03:17,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 07:03:17,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967278241] [2024-12-02 07:03:17,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:03:17,141 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 07:03:17,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 07:03:17,141 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 07:03:17,141 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-12-02 07:03:17,141 INFO L87 Difference]: Start difference. First operand 403 states and 500 transitions. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:03:17,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:03:17,367 INFO L93 Difference]: Finished difference Result 1285 states and 1651 transitions. [2024-12-02 07:03:17,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 07:03:17,367 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2024-12-02 07:03:17,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:03:17,370 INFO L225 Difference]: With dead ends: 1285 [2024-12-02 07:03:17,370 INFO L226 Difference]: Without dead ends: 1173 [2024-12-02 07:03:17,370 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-12-02 07:03:17,371 INFO L435 NwaCegarLoop]: 228 mSDtfsCounter, 814 mSDsluCounter, 734 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 814 SdHoareTripleChecker+Valid, 962 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 07:03:17,371 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [814 Valid, 962 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 07:03:17,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1173 states. [2024-12-02 07:03:17,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1173 to 609. [2024-12-02 07:03:17,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 609 states, 608 states have (on average 1.25) internal successors, (760), 608 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:03:17,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 760 transitions. [2024-12-02 07:03:17,387 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 760 transitions. Word has length 117 [2024-12-02 07:03:17,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:03:17,388 INFO L471 AbstractCegarLoop]: Abstraction has 609 states and 760 transitions. [2024-12-02 07:03:17,388 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:03:17,388 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 760 transitions. [2024-12-02 07:03:17,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-12-02 07:03:17,388 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:03:17,388 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:03:17,396 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-12-02 07:03:17,589 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:03:17,589 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:03:17,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:03:17,589 INFO L85 PathProgramCache]: Analyzing trace with hash -388512416, now seen corresponding path program 1 times [2024-12-02 07:03:17,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 07:03:17,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [277028757] [2024-12-02 07:03:17,589 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:03:17,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:03:17,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:03:17,591 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:03:17,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-12-02 07:03:17,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:03:17,691 INFO L256 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-12-02 07:03:17,693 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:03:19,256 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-02 07:03:19,256 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:03:19,256 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 07:03:19,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [277028757] [2024-12-02 07:03:19,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [277028757] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:03:19,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:03:19,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 07:03:19,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801539055] [2024-12-02 07:03:19,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:03:19,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 07:03:19,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 07:03:19,258 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 07:03:19,258 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-12-02 07:03:19,258 INFO L87 Difference]: Start difference. First operand 609 states and 760 transitions. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:03:19,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:03:19,477 INFO L93 Difference]: Finished difference Result 1387 states and 1779 transitions. [2024-12-02 07:03:19,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 07:03:19,478 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2024-12-02 07:03:19,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:03:19,480 INFO L225 Difference]: With dead ends: 1387 [2024-12-02 07:03:19,480 INFO L226 Difference]: Without dead ends: 1275 [2024-12-02 07:03:19,481 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-12-02 07:03:19,482 INFO L435 NwaCegarLoop]: 225 mSDtfsCounter, 639 mSDsluCounter, 765 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 639 SdHoareTripleChecker+Valid, 990 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 07:03:19,482 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [639 Valid, 990 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 07:03:19,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1275 states. [2024-12-02 07:03:19,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1275 to 711. [2024-12-02 07:03:19,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 711 states, 710 states have (on average 1.2507042253521128) internal successors, (888), 710 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:03:19,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 711 states to 711 states and 888 transitions. [2024-12-02 07:03:19,502 INFO L78 Accepts]: Start accepts. Automaton has 711 states and 888 transitions. Word has length 117 [2024-12-02 07:03:19,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:03:19,502 INFO L471 AbstractCegarLoop]: Abstraction has 711 states and 888 transitions. [2024-12-02 07:03:19,502 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:03:19,502 INFO L276 IsEmpty]: Start isEmpty. Operand 711 states and 888 transitions. [2024-12-02 07:03:19,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-12-02 07:03:19,503 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:03:19,503 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:03:19,509 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-12-02 07:03:19,703 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:03:19,703 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:03:19,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:03:19,704 INFO L85 PathProgramCache]: Analyzing trace with hash 170448992, now seen corresponding path program 1 times [2024-12-02 07:03:19,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 07:03:19,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [762744773] [2024-12-02 07:03:19,704 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:03:19,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:03:19,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:03:19,706 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:03:19,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-12-02 07:03:19,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:03:19,804 INFO L256 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-12-02 07:03:19,805 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:03:21,277 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-12-02 07:03:21,278 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:03:21,278 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 07:03:21,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [762744773] [2024-12-02 07:03:21,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [762744773] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:03:21,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:03:21,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 07:03:21,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108234319] [2024-12-02 07:03:21,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:03:21,278 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 07:03:21,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 07:03:21,279 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 07:03:21,279 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-12-02 07:03:21,279 INFO L87 Difference]: Start difference. First operand 711 states and 888 transitions. Second operand has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:03:21,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:03:21,494 INFO L93 Difference]: Finished difference Result 1489 states and 1907 transitions. [2024-12-02 07:03:21,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 07:03:21,495 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2024-12-02 07:03:21,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:03:21,496 INFO L225 Difference]: With dead ends: 1489 [2024-12-02 07:03:21,496 INFO L226 Difference]: Without dead ends: 1168 [2024-12-02 07:03:21,497 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-12-02 07:03:21,497 INFO L435 NwaCegarLoop]: 227 mSDtfsCounter, 688 mSDsluCounter, 781 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 688 SdHoareTripleChecker+Valid, 1008 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 07:03:21,497 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [688 Valid, 1008 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 07:03:21,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2024-12-02 07:03:21,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 604. [2024-12-02 07:03:21,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 604 states, 603 states have (on average 1.2354892205638475) internal successors, (745), 603 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:03:21,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 745 transitions. [2024-12-02 07:03:21,507 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 745 transitions. Word has length 117 [2024-12-02 07:03:21,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:03:21,507 INFO L471 AbstractCegarLoop]: Abstraction has 604 states and 745 transitions. [2024-12-02 07:03:21,507 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:03:21,507 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 745 transitions. [2024-12-02 07:03:21,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-12-02 07:03:21,508 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:03:21,508 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:03:21,518 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-12-02 07:03:21,708 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:03:21,708 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:03:21,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:03:21,709 INFO L85 PathProgramCache]: Analyzing trace with hash -867683744, now seen corresponding path program 1 times [2024-12-02 07:03:21,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 07:03:21,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1084824484] [2024-12-02 07:03:21,709 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:03:21,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:03:21,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:03:21,710 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:03:21,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-12-02 07:03:21,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:03:21,821 INFO L256 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-12-02 07:03:21,823 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:03:23,284 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-02 07:03:23,284 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:03:23,284 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 07:03:23,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084824484] [2024-12-02 07:03:23,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1084824484] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:03:23,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:03:23,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 07:03:23,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818504881] [2024-12-02 07:03:23,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:03:23,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 07:03:23,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 07:03:23,285 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 07:03:23,285 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-12-02 07:03:23,285 INFO L87 Difference]: Start difference. First operand 604 states and 745 transitions. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:03:23,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:03:23,523 INFO L93 Difference]: Finished difference Result 1382 states and 1764 transitions. [2024-12-02 07:03:23,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 07:03:23,523 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2024-12-02 07:03:23,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:03:23,525 INFO L225 Difference]: With dead ends: 1382 [2024-12-02 07:03:23,525 INFO L226 Difference]: Without dead ends: 1270 [2024-12-02 07:03:23,526 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-12-02 07:03:23,526 INFO L435 NwaCegarLoop]: 228 mSDtfsCounter, 679 mSDsluCounter, 887 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 679 SdHoareTripleChecker+Valid, 1115 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 07:03:23,526 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [679 Valid, 1115 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 07:03:23,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1270 states. [2024-12-02 07:03:23,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1270 to 706. [2024-12-02 07:03:23,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 706 states, 705 states have (on average 1.2382978723404254) internal successors, (873), 705 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:03:23,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 873 transitions. [2024-12-02 07:03:23,538 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 873 transitions. Word has length 117 [2024-12-02 07:03:23,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:03:23,539 INFO L471 AbstractCegarLoop]: Abstraction has 706 states and 873 transitions. [2024-12-02 07:03:23,539 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:03:23,539 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 873 transitions. [2024-12-02 07:03:23,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-12-02 07:03:23,539 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:03:23,539 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:03:23,545 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-12-02 07:03:23,739 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:03:23,740 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:03:23,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:03:23,740 INFO L85 PathProgramCache]: Analyzing trace with hash 2008686432, now seen corresponding path program 1 times [2024-12-02 07:03:23,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 07:03:23,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [575516347] [2024-12-02 07:03:23,740 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:03:23,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:03:23,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:03:23,742 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:03:23,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-12-02 07:03:23,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:03:23,854 INFO L256 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-12-02 07:03:23,856 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:03:25,363 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-02 07:03:25,363 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:03:25,364 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 07:03:25,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575516347] [2024-12-02 07:03:25,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [575516347] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:03:25,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:03:25,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 07:03:25,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887766171] [2024-12-02 07:03:25,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:03:25,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 07:03:25,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 07:03:25,365 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 07:03:25,365 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-12-02 07:03:25,365 INFO L87 Difference]: Start difference. First operand 706 states and 873 transitions. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:03:25,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:03:25,622 INFO L93 Difference]: Finished difference Result 1484 states and 1892 transitions. [2024-12-02 07:03:25,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 07:03:25,623 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2024-12-02 07:03:25,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:03:25,625 INFO L225 Difference]: With dead ends: 1484 [2024-12-02 07:03:25,625 INFO L226 Difference]: Without dead ends: 1372 [2024-12-02 07:03:25,626 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-12-02 07:03:25,626 INFO L435 NwaCegarLoop]: 229 mSDtfsCounter, 597 mSDsluCounter, 878 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 597 SdHoareTripleChecker+Valid, 1107 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 07:03:25,626 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [597 Valid, 1107 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 07:03:25,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1372 states. [2024-12-02 07:03:25,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1372 to 808. [2024-12-02 07:03:25,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 808 states, 807 states have (on average 1.2403965303593556) internal successors, (1001), 807 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:03:25,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 1001 transitions. [2024-12-02 07:03:25,650 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 1001 transitions. Word has length 117 [2024-12-02 07:03:25,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:03:25,650 INFO L471 AbstractCegarLoop]: Abstraction has 808 states and 1001 transitions. [2024-12-02 07:03:25,650 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:03:25,650 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 1001 transitions. [2024-12-02 07:03:25,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-12-02 07:03:25,651 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:03:25,651 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:03:25,660 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-12-02 07:03:25,851 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:03:25,852 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:03:25,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:03:25,852 INFO L85 PathProgramCache]: Analyzing trace with hash 329415008, now seen corresponding path program 1 times [2024-12-02 07:03:25,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 07:03:25,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1116976188] [2024-12-02 07:03:25,852 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:03:25,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:03:25,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:03:25,854 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:03:25,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-12-02 07:03:25,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:03:25,958 INFO L256 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-12-02 07:03:25,959 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:03:27,391 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 07:03:27,392 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:03:27,392 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 07:03:27,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116976188] [2024-12-02 07:03:27,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1116976188] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:03:27,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:03:27,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 07:03:27,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365553528] [2024-12-02 07:03:27,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:03:27,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 07:03:27,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 07:03:27,393 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 07:03:27,393 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-12-02 07:03:27,393 INFO L87 Difference]: Start difference. First operand 808 states and 1001 transitions. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:03:27,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:03:27,600 INFO L93 Difference]: Finished difference Result 1586 states and 2020 transitions. [2024-12-02 07:03:27,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 07:03:27,600 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2024-12-02 07:03:27,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:03:27,602 INFO L225 Difference]: With dead ends: 1586 [2024-12-02 07:03:27,602 INFO L226 Difference]: Without dead ends: 1474 [2024-12-02 07:03:27,602 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-12-02 07:03:27,602 INFO L435 NwaCegarLoop]: 230 mSDtfsCounter, 829 mSDsluCounter, 754 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 829 SdHoareTripleChecker+Valid, 984 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 07:03:27,603 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [829 Valid, 984 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 07:03:27,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2024-12-02 07:03:27,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 910. [2024-12-02 07:03:27,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 910 states, 909 states have (on average 1.242024202420242) internal successors, (1129), 909 states have internal predecessors, (1129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:03:27,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 910 states to 910 states and 1129 transitions. [2024-12-02 07:03:27,631 INFO L78 Accepts]: Start accepts. Automaton has 910 states and 1129 transitions. Word has length 117 [2024-12-02 07:03:27,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:03:27,631 INFO L471 AbstractCegarLoop]: Abstraction has 910 states and 1129 transitions. [2024-12-02 07:03:27,631 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:03:27,631 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states and 1129 transitions. [2024-12-02 07:03:27,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-12-02 07:03:27,632 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:03:27,632 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:03:27,638 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-12-02 07:03:27,832 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:03:27,832 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:03:27,833 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:03:27,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1788405344, now seen corresponding path program 1 times [2024-12-02 07:03:27,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 07:03:27,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1773123273] [2024-12-02 07:03:27,833 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:03:27,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:03:27,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:03:27,835 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:03:27,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-12-02 07:03:27,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:03:27,940 INFO L256 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-12-02 07:03:27,941 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:03:29,392 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 07:03:29,392 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:03:29,392 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 07:03:29,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1773123273] [2024-12-02 07:03:29,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1773123273] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:03:29,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:03:29,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 07:03:29,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168827740] [2024-12-02 07:03:29,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:03:29,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 07:03:29,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 07:03:29,393 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 07:03:29,393 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-12-02 07:03:29,393 INFO L87 Difference]: Start difference. First operand 910 states and 1129 transitions. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:03:29,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:03:29,592 INFO L93 Difference]: Finished difference Result 1688 states and 2148 transitions. [2024-12-02 07:03:29,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 07:03:29,593 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2024-12-02 07:03:29,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:03:29,595 INFO L225 Difference]: With dead ends: 1688 [2024-12-02 07:03:29,595 INFO L226 Difference]: Without dead ends: 1576 [2024-12-02 07:03:29,596 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-12-02 07:03:29,596 INFO L435 NwaCegarLoop]: 226 mSDtfsCounter, 731 mSDsluCounter, 731 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 731 SdHoareTripleChecker+Valid, 957 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 07:03:29,596 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [731 Valid, 957 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 07:03:29,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1576 states. [2024-12-02 07:03:29,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1576 to 1012. [2024-12-02 07:03:29,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1012 states, 1011 states have (on average 1.2433234421364985) internal successors, (1257), 1011 states have internal predecessors, (1257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:03:29,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1012 states to 1012 states and 1257 transitions. [2024-12-02 07:03:29,616 INFO L78 Accepts]: Start accepts. Automaton has 1012 states and 1257 transitions. Word has length 117 [2024-12-02 07:03:29,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:03:29,616 INFO L471 AbstractCegarLoop]: Abstraction has 1012 states and 1257 transitions. [2024-12-02 07:03:29,616 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:03:29,616 INFO L276 IsEmpty]: Start isEmpty. Operand 1012 states and 1257 transitions. [2024-12-02 07:03:29,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-12-02 07:03:29,616 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:03:29,616 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:03:29,622 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-12-02 07:03:29,817 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:03:29,817 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:03:29,817 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:03:29,817 INFO L85 PathProgramCache]: Analyzing trace with hash -1311067084, now seen corresponding path program 1 times [2024-12-02 07:03:29,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 07:03:29,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1965255709] [2024-12-02 07:03:29,818 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:03:29,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:03:29,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:03:29,819 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:03:29,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-12-02 07:03:29,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:03:29,932 INFO L256 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 07:03:29,934 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:03:30,047 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 07:03:30,047 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:03:30,369 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:03:30,369 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 07:03:30,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965255709] [2024-12-02 07:03:30,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965255709] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:03:30,369 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 07:03:30,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 7 [2024-12-02 07:03:30,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015835425] [2024-12-02 07:03:30,369 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 07:03:30,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 07:03:30,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 07:03:30,370 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 07:03:30,370 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-12-02 07:03:30,370 INFO L87 Difference]: Start difference. First operand 1012 states and 1257 transitions. Second operand has 7 states, 7 states have (on average 32.42857142857143) internal successors, (227), 7 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:03:30,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:03:30,476 INFO L93 Difference]: Finished difference Result 3614 states and 4704 transitions. [2024-12-02 07:03:30,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 07:03:30,477 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 32.42857142857143) internal successors, (227), 7 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2024-12-02 07:03:30,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:03:30,480 INFO L225 Difference]: With dead ends: 3614 [2024-12-02 07:03:30,480 INFO L226 Difference]: Without dead ends: 2684 [2024-12-02 07:03:30,481 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-12-02 07:03:30,481 INFO L435 NwaCegarLoop]: 163 mSDtfsCounter, 313 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:03:30,481 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [313 Valid, 592 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:03:30,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2684 states. [2024-12-02 07:03:30,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2684 to 2659. [2024-12-02 07:03:30,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2659 states, 2658 states have (on average 1.2840481565086532) internal successors, (3413), 2658 states have internal predecessors, (3413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:03:30,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2659 states to 2659 states and 3413 transitions. [2024-12-02 07:03:30,563 INFO L78 Accepts]: Start accepts. Automaton has 2659 states and 3413 transitions. Word has length 118 [2024-12-02 07:03:30,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:03:30,564 INFO L471 AbstractCegarLoop]: Abstraction has 2659 states and 3413 transitions. [2024-12-02 07:03:30,564 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 32.42857142857143) internal successors, (227), 7 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:03:30,564 INFO L276 IsEmpty]: Start isEmpty. Operand 2659 states and 3413 transitions. [2024-12-02 07:03:30,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-12-02 07:03:30,564 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:03:30,564 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:03:30,570 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-12-02 07:03:30,765 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:03:30,765 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:03:30,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:03:30,765 INFO L85 PathProgramCache]: Analyzing trace with hash -237225526, now seen corresponding path program 1 times [2024-12-02 07:03:30,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 07:03:30,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1506959536] [2024-12-02 07:03:30,765 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:03:30,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:03:30,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:03:30,767 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:03:30,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-12-02 07:03:30,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:03:30,878 INFO L256 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-12-02 07:03:30,880 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:03:31,928 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:03:31,928 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:03:32,312 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:03:32,312 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 07:03:32,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1506959536] [2024-12-02 07:03:32,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1506959536] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:03:32,313 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 07:03:32,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 18 [2024-12-02 07:03:32,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035512175] [2024-12-02 07:03:32,313 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 07:03:32,313 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-12-02 07:03:32,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 07:03:32,314 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-12-02 07:03:32,314 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2024-12-02 07:03:32,314 INFO L87 Difference]: Start difference. First operand 2659 states and 3413 transitions. Second operand has 18 states, 18 states have (on average 11.833333333333334) internal successors, (213), 18 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:03:33,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:03:33,221 INFO L93 Difference]: Finished difference Result 8655 states and 11141 transitions. [2024-12-02 07:03:33,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-12-02 07:03:33,221 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 11.833333333333334) internal successors, (213), 18 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 119 [2024-12-02 07:03:33,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:03:33,227 INFO L225 Difference]: With dead ends: 8655 [2024-12-02 07:03:33,227 INFO L226 Difference]: Without dead ends: 6118 [2024-12-02 07:03:33,229 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=172, Invalid=530, Unknown=0, NotChecked=0, Total=702 [2024-12-02 07:03:33,230 INFO L435 NwaCegarLoop]: 102 mSDtfsCounter, 825 mSDsluCounter, 877 mSDsCounter, 0 mSdLazyCounter, 688 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 825 SdHoareTripleChecker+Valid, 979 SdHoareTripleChecker+Invalid, 699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 07:03:33,230 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [825 Valid, 979 Invalid, 699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 688 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 07:03:33,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6118 states. [2024-12-02 07:03:33,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6118 to 4920. [2024-12-02 07:03:33,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4920 states, 4919 states have (on average 1.2703801585688148) internal successors, (6249), 4919 states have internal predecessors, (6249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:03:33,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4920 states to 4920 states and 6249 transitions. [2024-12-02 07:03:33,384 INFO L78 Accepts]: Start accepts. Automaton has 4920 states and 6249 transitions. Word has length 119 [2024-12-02 07:03:33,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:03:33,384 INFO L471 AbstractCegarLoop]: Abstraction has 4920 states and 6249 transitions. [2024-12-02 07:03:33,384 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 11.833333333333334) internal successors, (213), 18 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:03:33,384 INFO L276 IsEmpty]: Start isEmpty. Operand 4920 states and 6249 transitions. [2024-12-02 07:03:33,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-12-02 07:03:33,385 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:03:33,385 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:03:33,391 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-12-02 07:03:33,585 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:03:33,585 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:03:33,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:03:33,586 INFO L85 PathProgramCache]: Analyzing trace with hash -278890204, now seen corresponding path program 1 times [2024-12-02 07:03:33,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 07:03:33,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [906145672] [2024-12-02 07:03:33,586 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:03:33,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:03:33,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:03:33,588 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:03:33,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-12-02 07:03:33,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:03:33,699 INFO L256 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-12-02 07:03:33,701 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:03:34,653 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:03:34,653 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:03:35,020 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:03:35,021 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 07:03:35,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [906145672] [2024-12-02 07:03:35,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [906145672] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:03:35,021 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 07:03:35,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 18 [2024-12-02 07:03:35,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887708112] [2024-12-02 07:03:35,021 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 07:03:35,021 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-12-02 07:03:35,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 07:03:35,022 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-12-02 07:03:35,022 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2024-12-02 07:03:35,022 INFO L87 Difference]: Start difference. First operand 4920 states and 6249 transitions. Second operand has 18 states, 18 states have (on average 12.61111111111111) internal successors, (227), 18 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:03:35,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:03:35,986 INFO L93 Difference]: Finished difference Result 15095 states and 19021 transitions. [2024-12-02 07:03:35,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-12-02 07:03:35,986 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 12.61111111111111) internal successors, (227), 18 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2024-12-02 07:03:35,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:03:35,993 INFO L225 Difference]: With dead ends: 15095 [2024-12-02 07:03:35,993 INFO L226 Difference]: Without dead ends: 10465 [2024-12-02 07:03:35,996 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=172, Invalid=530, Unknown=0, NotChecked=0, Total=702 [2024-12-02 07:03:35,996 INFO L435 NwaCegarLoop]: 102 mSDtfsCounter, 1121 mSDsluCounter, 887 mSDsCounter, 0 mSdLazyCounter, 667 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1121 SdHoareTripleChecker+Valid, 989 SdHoareTripleChecker+Invalid, 681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 07:03:35,996 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1121 Valid, 989 Invalid, 681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 667 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 07:03:36,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10465 states. [2024-12-02 07:03:36,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10465 to 9030. [2024-12-02 07:03:36,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9030 states, 9029 states have (on average 1.252519658876952) internal successors, (11309), 9029 states have internal predecessors, (11309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:03:36,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9030 states to 9030 states and 11309 transitions. [2024-12-02 07:03:36,215 INFO L78 Accepts]: Start accepts. Automaton has 9030 states and 11309 transitions. Word has length 120 [2024-12-02 07:03:36,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:03:36,215 INFO L471 AbstractCegarLoop]: Abstraction has 9030 states and 11309 transitions. [2024-12-02 07:03:36,215 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 12.61111111111111) internal successors, (227), 18 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:03:36,215 INFO L276 IsEmpty]: Start isEmpty. Operand 9030 states and 11309 transitions. [2024-12-02 07:03:36,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-12-02 07:03:36,216 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:03:36,216 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:03:36,222 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-12-02 07:03:36,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:03:36,416 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:03:36,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:03:36,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1653831976, now seen corresponding path program 1 times [2024-12-02 07:03:36,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 07:03:36,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1089130489] [2024-12-02 07:03:36,417 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:03:36,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:03:36,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:03:36,419 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:03:36,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-12-02 07:03:36,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:03:36,535 INFO L256 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-12-02 07:03:36,537 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:03:37,450 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:03:37,450 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:03:37,786 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:03:37,786 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 07:03:37,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089130489] [2024-12-02 07:03:37,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1089130489] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:03:37,787 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 07:03:37,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 18 [2024-12-02 07:03:37,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383334267] [2024-12-02 07:03:37,787 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 07:03:37,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-12-02 07:03:37,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 07:03:37,788 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-12-02 07:03:37,788 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2024-12-02 07:03:37,788 INFO L87 Difference]: Start difference. First operand 9030 states and 11309 transitions. Second operand has 18 states, 18 states have (on average 12.944444444444445) internal successors, (233), 18 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:03:38,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:03:38,952 INFO L93 Difference]: Finished difference Result 27478 states and 34089 transitions. [2024-12-02 07:03:38,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-12-02 07:03:38,953 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 12.944444444444445) internal successors, (233), 18 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2024-12-02 07:03:38,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:03:38,970 INFO L225 Difference]: With dead ends: 27478 [2024-12-02 07:03:38,970 INFO L226 Difference]: Without dead ends: 18912 [2024-12-02 07:03:38,976 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=172, Invalid=530, Unknown=0, NotChecked=0, Total=702 [2024-12-02 07:03:38,976 INFO L435 NwaCegarLoop]: 109 mSDtfsCounter, 525 mSDsluCounter, 841 mSDsCounter, 0 mSdLazyCounter, 667 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 525 SdHoareTripleChecker+Valid, 950 SdHoareTripleChecker+Invalid, 676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 07:03:38,976 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [525 Valid, 950 Invalid, 676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 667 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 07:03:38,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18912 states. [2024-12-02 07:03:39,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18912 to 16782. [2024-12-02 07:03:39,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16782 states, 16781 states have (on average 1.2356236219533996) internal successors, (20735), 16781 states have internal predecessors, (20735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:03:39,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16782 states to 16782 states and 20735 transitions. [2024-12-02 07:03:39,574 INFO L78 Accepts]: Start accepts. Automaton has 16782 states and 20735 transitions. Word has length 121 [2024-12-02 07:03:39,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:03:39,574 INFO L471 AbstractCegarLoop]: Abstraction has 16782 states and 20735 transitions. [2024-12-02 07:03:39,574 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 12.944444444444445) internal successors, (233), 18 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:03:39,574 INFO L276 IsEmpty]: Start isEmpty. Operand 16782 states and 20735 transitions. [2024-12-02 07:03:39,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-12-02 07:03:39,575 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:03:39,575 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:03:39,581 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2024-12-02 07:03:39,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:03:39,776 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:03:39,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:03:39,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1690487444, now seen corresponding path program 1 times [2024-12-02 07:03:39,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 07:03:39,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1262170289] [2024-12-02 07:03:39,776 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:03:39,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:03:39,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:03:39,778 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:03:39,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-12-02 07:03:39,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:03:39,887 INFO L256 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-12-02 07:03:39,888 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:03:40,761 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:03:40,761 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:03:41,067 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:03:41,067 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 07:03:41,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1262170289] [2024-12-02 07:03:41,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1262170289] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:03:41,067 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 07:03:41,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 18 [2024-12-02 07:03:41,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851171333] [2024-12-02 07:03:41,068 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 07:03:41,068 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-12-02 07:03:41,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 07:03:41,068 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-12-02 07:03:41,068 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2024-12-02 07:03:41,068 INFO L87 Difference]: Start difference. First operand 16782 states and 20735 transitions. Second operand has 18 states, 18 states have (on average 12.5) internal successors, (225), 18 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:03:42,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:03:42,638 INFO L93 Difference]: Finished difference Result 52916 states and 65000 transitions. [2024-12-02 07:03:42,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-12-02 07:03:42,638 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 12.5) internal successors, (225), 18 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2024-12-02 07:03:42,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:03:42,660 INFO L225 Difference]: With dead ends: 52916 [2024-12-02 07:03:42,660 INFO L226 Difference]: Without dead ends: 37796 [2024-12-02 07:03:42,667 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=172, Invalid=530, Unknown=0, NotChecked=0, Total=702 [2024-12-02 07:03:42,667 INFO L435 NwaCegarLoop]: 102 mSDtfsCounter, 959 mSDsluCounter, 809 mSDsCounter, 0 mSdLazyCounter, 629 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 959 SdHoareTripleChecker+Valid, 911 SdHoareTripleChecker+Invalid, 644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 07:03:42,667 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [959 Valid, 911 Invalid, 644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 629 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 07:03:42,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37796 states. [2024-12-02 07:03:43,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37796 to 31098. [2024-12-02 07:03:43,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31098 states, 31097 states have (on average 1.2240087468244525) internal successors, (38063), 31097 states have internal predecessors, (38063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:03:43,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31098 states to 31098 states and 38063 transitions. [2024-12-02 07:03:43,603 INFO L78 Accepts]: Start accepts. Automaton has 31098 states and 38063 transitions. Word has length 122 [2024-12-02 07:03:43,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:03:43,603 INFO L471 AbstractCegarLoop]: Abstraction has 31098 states and 38063 transitions. [2024-12-02 07:03:43,603 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 12.5) internal successors, (225), 18 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:03:43,603 INFO L276 IsEmpty]: Start isEmpty. Operand 31098 states and 38063 transitions. [2024-12-02 07:03:43,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-12-02 07:03:43,604 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:03:43,604 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:03:43,612 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2024-12-02 07:03:43,805 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:03:43,805 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:03:43,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:03:43,805 INFO L85 PathProgramCache]: Analyzing trace with hash 337345428, now seen corresponding path program 1 times [2024-12-02 07:03:43,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 07:03:43,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1507532674] [2024-12-02 07:03:43,805 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:03:43,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:03:43,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:03:43,807 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:03:43,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-12-02 07:03:43,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:03:43,919 INFO L256 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-12-02 07:03:43,920 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:03:44,955 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 13 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:03:44,955 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:03:45,294 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 13 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:03:45,294 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 07:03:45,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507532674] [2024-12-02 07:03:45,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1507532674] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:03:45,294 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 07:03:45,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 18 [2024-12-02 07:03:45,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635476686] [2024-12-02 07:03:45,294 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 07:03:45,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-12-02 07:03:45,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 07:03:45,295 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-12-02 07:03:45,295 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2024-12-02 07:03:45,295 INFO L87 Difference]: Start difference. First operand 31098 states and 38063 transitions. Second operand has 18 states, 18 states have (on average 12.333333333333334) internal successors, (222), 18 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:03:48,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:03:48,135 INFO L93 Difference]: Finished difference Result 101514 states and 123907 transitions. [2024-12-02 07:03:48,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-12-02 07:03:48,135 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 12.333333333333334) internal successors, (222), 18 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 123 [2024-12-02 07:03:48,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:03:48,186 INFO L225 Difference]: With dead ends: 101514 [2024-12-02 07:03:48,186 INFO L226 Difference]: Without dead ends: 72446 [2024-12-02 07:03:48,199 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=172, Invalid=530, Unknown=0, NotChecked=0, Total=702 [2024-12-02 07:03:48,199 INFO L435 NwaCegarLoop]: 126 mSDtfsCounter, 987 mSDsluCounter, 864 mSDsCounter, 0 mSdLazyCounter, 712 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 987 SdHoareTripleChecker+Valid, 990 SdHoareTripleChecker+Invalid, 725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 07:03:48,199 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [987 Valid, 990 Invalid, 725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 712 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 07:03:48,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72446 states. [2024-12-02 07:03:50,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72446 to 58176. [2024-12-02 07:03:50,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58176 states, 58175 states have (on average 1.2137516115169746) internal successors, (70610), 58175 states have internal predecessors, (70610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:03:50,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58176 states to 58176 states and 70610 transitions. [2024-12-02 07:03:50,086 INFO L78 Accepts]: Start accepts. Automaton has 58176 states and 70610 transitions. Word has length 123 [2024-12-02 07:03:50,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:03:50,087 INFO L471 AbstractCegarLoop]: Abstraction has 58176 states and 70610 transitions. [2024-12-02 07:03:50,087 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 12.333333333333334) internal successors, (222), 18 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:03:50,087 INFO L276 IsEmpty]: Start isEmpty. Operand 58176 states and 70610 transitions. [2024-12-02 07:03:50,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-12-02 07:03:50,089 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:03:50,089 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:03:50,098 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2024-12-02 07:03:50,289 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:03:50,289 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:03:50,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:03:50,290 INFO L85 PathProgramCache]: Analyzing trace with hash -2038536848, now seen corresponding path program 1 times [2024-12-02 07:03:50,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 07:03:50,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1073594017] [2024-12-02 07:03:50,290 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:03:50,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:03:50,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:03:50,292 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:03:50,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-12-02 07:03:50,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:03:50,404 INFO L256 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-12-02 07:03:50,405 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:03:51,189 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:03:51,190 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:03:51,448 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:03:51,448 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 07:03:51,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1073594017] [2024-12-02 07:03:51,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1073594017] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:03:51,448 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 07:03:51,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 18 [2024-12-02 07:03:51,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353746640] [2024-12-02 07:03:51,448 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 07:03:51,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-12-02 07:03:51,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 07:03:51,449 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-12-02 07:03:51,449 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2024-12-02 07:03:51,449 INFO L87 Difference]: Start difference. First operand 58176 states and 70610 transitions. Second operand has 18 states, 18 states have (on average 11.88888888888889) internal successors, (214), 18 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:03:56,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:03:56,587 INFO L93 Difference]: Finished difference Result 194124 states and 235945 transitions. [2024-12-02 07:03:56,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-12-02 07:03:56,588 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 11.88888888888889) internal successors, (214), 18 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2024-12-02 07:03:56,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:03:56,710 INFO L225 Difference]: With dead ends: 194124 [2024-12-02 07:03:56,710 INFO L226 Difference]: Without dead ends: 137858 [2024-12-02 07:03:56,739 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=172, Invalid=530, Unknown=0, NotChecked=0, Total=702 [2024-12-02 07:03:56,740 INFO L435 NwaCegarLoop]: 102 mSDtfsCounter, 915 mSDsluCounter, 920 mSDsCounter, 0 mSdLazyCounter, 748 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 915 SdHoareTripleChecker+Valid, 1022 SdHoareTripleChecker+Invalid, 758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 07:03:56,740 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [915 Valid, 1022 Invalid, 758 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 748 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 07:03:56,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137858 states. [2024-12-02 07:04:00,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137858 to 103923. [2024-12-02 07:04:00,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103923 states, 103922 states have (on average 1.206164238563538) internal successors, (125347), 103922 states have internal predecessors, (125347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:04:00,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103923 states to 103923 states and 125347 transitions. [2024-12-02 07:04:00,403 INFO L78 Accepts]: Start accepts. Automaton has 103923 states and 125347 transitions. Word has length 124 [2024-12-02 07:04:00,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:04:00,403 INFO L471 AbstractCegarLoop]: Abstraction has 103923 states and 125347 transitions. [2024-12-02 07:04:00,404 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 11.88888888888889) internal successors, (214), 18 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:04:00,404 INFO L276 IsEmpty]: Start isEmpty. Operand 103923 states and 125347 transitions. [2024-12-02 07:04:00,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-12-02 07:04:00,405 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:04:00,405 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:04:00,412 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2024-12-02 07:04:00,606 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:04:00,606 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:04:00,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:04:00,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1701899432, now seen corresponding path program 1 times [2024-12-02 07:04:00,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 07:04:00,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1042319505] [2024-12-02 07:04:00,606 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:04:00,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:04:00,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:04:00,608 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:04:00,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-12-02 07:04:00,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:04:00,729 INFO L256 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-12-02 07:04:00,731 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:04:01,490 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:04:01,490 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:04:01,766 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:04:01,766 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 07:04:01,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1042319505] [2024-12-02 07:04:01,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1042319505] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:04:01,766 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 07:04:01,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 17 [2024-12-02 07:04:01,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119460262] [2024-12-02 07:04:01,766 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 07:04:01,767 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-12-02 07:04:01,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 07:04:01,767 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-12-02 07:04:01,767 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2024-12-02 07:04:01,767 INFO L87 Difference]: Start difference. First operand 103923 states and 125347 transitions. Second operand has 17 states, 17 states have (on average 12.411764705882353) internal successors, (211), 17 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:04:06,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:04:06,118 INFO L93 Difference]: Finished difference Result 201364 states and 244063 transitions. [2024-12-02 07:04:06,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-02 07:04:06,119 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 12.411764705882353) internal successors, (211), 17 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2024-12-02 07:04:06,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:04:06,197 INFO L225 Difference]: With dead ends: 201364 [2024-12-02 07:04:06,198 INFO L226 Difference]: Without dead ends: 99185 [2024-12-02 07:04:06,239 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=156, Invalid=444, Unknown=0, NotChecked=0, Total=600 [2024-12-02 07:04:06,239 INFO L435 NwaCegarLoop]: 111 mSDtfsCounter, 718 mSDsluCounter, 761 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 718 SdHoareTripleChecker+Valid, 872 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 07:04:06,239 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [718 Valid, 872 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 567 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 07:04:06,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99185 states. [2024-12-02 07:04:09,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99185 to 99179. [2024-12-02 07:04:09,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99179 states, 99178 states have (on average 1.2084635705499203) internal successors, (119853), 99178 states have internal predecessors, (119853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:04:09,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99179 states to 99179 states and 119853 transitions. [2024-12-02 07:04:09,773 INFO L78 Accepts]: Start accepts. Automaton has 99179 states and 119853 transitions. Word has length 125 [2024-12-02 07:04:09,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:04:09,773 INFO L471 AbstractCegarLoop]: Abstraction has 99179 states and 119853 transitions. [2024-12-02 07:04:09,773 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 12.411764705882353) internal successors, (211), 17 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:04:09,773 INFO L276 IsEmpty]: Start isEmpty. Operand 99179 states and 119853 transitions. [2024-12-02 07:04:09,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2024-12-02 07:04:09,787 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:04:09,787 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:04:09,795 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2024-12-02 07:04:09,988 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:04:09,988 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:04:09,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:04:09,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1892236509, now seen corresponding path program 1 times [2024-12-02 07:04:09,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 07:04:09,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1003790869] [2024-12-02 07:04:09,989 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:04:09,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:04:09,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:04:09,990 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:04:09,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-12-02 07:04:10,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:04:10,142 INFO L256 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-12-02 07:04:10,144 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:04:12,810 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 24 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:04:12,810 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:04:14,201 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 24 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:04:14,201 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 07:04:14,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003790869] [2024-12-02 07:04:14,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1003790869] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:04:14,201 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 07:04:14,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15] total 31 [2024-12-02 07:04:14,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558226522] [2024-12-02 07:04:14,201 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 07:04:14,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-12-02 07:04:14,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 07:04:14,202 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-12-02 07:04:14,202 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=824, Unknown=0, NotChecked=0, Total=930 [2024-12-02 07:04:14,203 INFO L87 Difference]: Start difference. First operand 99179 states and 119853 transitions. Second operand has 31 states, 31 states have (on average 11.774193548387096) internal successors, (365), 31 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:04:25,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:04:25,572 INFO L93 Difference]: Finished difference Result 185435 states and 223333 transitions. [2024-12-02 07:04:25,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-12-02 07:04:25,572 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 11.774193548387096) internal successors, (365), 31 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2024-12-02 07:04:25,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:04:25,700 INFO L225 Difference]: With dead ends: 185435 [2024-12-02 07:04:25,700 INFO L226 Difference]: Without dead ends: 139897 [2024-12-02 07:04:25,731 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 415 GetRequests, 344 SyntacticMatches, 2 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1025 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=1025, Invalid=3945, Unknown=0, NotChecked=0, Total=4970 [2024-12-02 07:04:25,731 INFO L435 NwaCegarLoop]: 180 mSDtfsCounter, 2252 mSDsluCounter, 2019 mSDsCounter, 0 mSdLazyCounter, 2480 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2252 SdHoareTripleChecker+Valid, 2199 SdHoareTripleChecker+Invalid, 2514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 2480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:04:25,732 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2252 Valid, 2199 Invalid, 2514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 2480 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-12-02 07:04:25,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139897 states. [2024-12-02 07:04:28,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139897 to 67673. [2024-12-02 07:04:28,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67673 states, 67672 states have (on average 1.2045159002246129) internal successors, (81512), 67672 states have internal predecessors, (81512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:04:28,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67673 states to 67673 states and 81512 transitions. [2024-12-02 07:04:28,707 INFO L78 Accepts]: Start accepts. Automaton has 67673 states and 81512 transitions. Word has length 188 [2024-12-02 07:04:28,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:04:28,707 INFO L471 AbstractCegarLoop]: Abstraction has 67673 states and 81512 transitions. [2024-12-02 07:04:28,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 11.774193548387096) internal successors, (365), 31 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:04:28,707 INFO L276 IsEmpty]: Start isEmpty. Operand 67673 states and 81512 transitions. [2024-12-02 07:04:28,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2024-12-02 07:04:28,722 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:04:28,722 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:04:28,728 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2024-12-02 07:04:28,922 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:04:28,922 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:04:28,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:04:28,922 INFO L85 PathProgramCache]: Analyzing trace with hash -277758809, now seen corresponding path program 1 times [2024-12-02 07:04:28,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 07:04:28,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [628665592] [2024-12-02 07:04:28,923 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:04:28,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:04:28,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:04:28,924 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:04:28,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-12-02 07:04:29,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:04:29,077 INFO L256 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-12-02 07:04:29,079 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:04:29,851 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 72 proven. 64 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-12-02 07:04:29,851 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:04:30,553 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 72 proven. 64 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-12-02 07:04:30,553 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 07:04:30,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [628665592] [2024-12-02 07:04:30,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [628665592] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:04:30,554 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 07:04:30,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2024-12-02 07:04:30,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477202910] [2024-12-02 07:04:30,554 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 07:04:30,554 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-12-02 07:04:30,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 07:04:30,554 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-12-02 07:04:30,555 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2024-12-02 07:04:30,555 INFO L87 Difference]: Start difference. First operand 67673 states and 81512 transitions. Second operand has 16 states, 16 states have (on average 20.5) internal successors, (328), 15 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:04:34,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:04:34,231 INFO L93 Difference]: Finished difference Result 102541 states and 123728 transitions. [2024-12-02 07:04:34,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-02 07:04:34,232 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 20.5) internal successors, (328), 15 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 189 [2024-12-02 07:04:34,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:04:34,283 INFO L225 Difference]: With dead ends: 102541 [2024-12-02 07:04:34,283 INFO L226 Difference]: Without dead ends: 68403 [2024-12-02 07:04:34,297 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 362 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=192, Invalid=564, Unknown=0, NotChecked=0, Total=756 [2024-12-02 07:04:34,297 INFO L435 NwaCegarLoop]: 142 mSDtfsCounter, 579 mSDsluCounter, 844 mSDsCounter, 0 mSdLazyCounter, 628 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 579 SdHoareTripleChecker+Valid, 986 SdHoareTripleChecker+Invalid, 636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-02 07:04:34,297 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [579 Valid, 986 Invalid, 636 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 628 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-02 07:04:34,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68403 states. [2024-12-02 07:04:37,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68403 to 67673. [2024-12-02 07:04:37,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67673 states, 67672 states have (on average 1.1999054261733066) internal successors, (81200), 67672 states have internal predecessors, (81200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:04:37,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67673 states to 67673 states and 81200 transitions. [2024-12-02 07:04:37,262 INFO L78 Accepts]: Start accepts. Automaton has 67673 states and 81200 transitions. Word has length 189 [2024-12-02 07:04:37,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:04:37,262 INFO L471 AbstractCegarLoop]: Abstraction has 67673 states and 81200 transitions. [2024-12-02 07:04:37,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 20.5) internal successors, (328), 15 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:04:37,262 INFO L276 IsEmpty]: Start isEmpty. Operand 67673 states and 81200 transitions. [2024-12-02 07:04:37,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2024-12-02 07:04:37,270 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:04:37,270 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:04:37,277 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2024-12-02 07:04:37,470 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:04:37,471 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:04:37,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:04:37,471 INFO L85 PathProgramCache]: Analyzing trace with hash 853996933, now seen corresponding path program 1 times [2024-12-02 07:04:37,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 07:04:37,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1275152759] [2024-12-02 07:04:37,471 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:04:37,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:04:37,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:04:37,473 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:04:37,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-12-02 07:04:37,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:04:37,636 INFO L256 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-12-02 07:04:37,637 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:04:39,914 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 66 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:04:39,914 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:04:41,020 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 66 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:04:41,021 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 07:04:41,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1275152759] [2024-12-02 07:04:41,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1275152759] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:04:41,021 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 07:04:41,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14] total 29 [2024-12-02 07:04:41,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348019037] [2024-12-02 07:04:41,021 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 07:04:41,021 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-12-02 07:04:41,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 07:04:41,022 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-12-02 07:04:41,022 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=707, Unknown=0, NotChecked=0, Total=812 [2024-12-02 07:04:41,022 INFO L87 Difference]: Start difference. First operand 67673 states and 81200 transitions. Second operand has 29 states, 29 states have (on average 11.862068965517242) internal successors, (344), 29 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:04:49,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:04:49,618 INFO L93 Difference]: Finished difference Result 89968 states and 108164 transitions. [2024-12-02 07:04:49,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-12-02 07:04:49,619 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 11.862068965517242) internal successors, (344), 29 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 189 [2024-12-02 07:04:49,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:04:49,679 INFO L225 Difference]: With dead ends: 89968 [2024-12-02 07:04:49,679 INFO L226 Difference]: Without dead ends: 77222 [2024-12-02 07:04:49,690 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 348 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 825 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=841, Invalid=3065, Unknown=0, NotChecked=0, Total=3906 [2024-12-02 07:04:49,690 INFO L435 NwaCegarLoop]: 185 mSDtfsCounter, 2003 mSDsluCounter, 1778 mSDsCounter, 0 mSdLazyCounter, 1838 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2003 SdHoareTripleChecker+Valid, 1963 SdHoareTripleChecker+Invalid, 1870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1838 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-12-02 07:04:49,690 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2003 Valid, 1963 Invalid, 1870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1838 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-12-02 07:04:49,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77222 states. [2024-12-02 07:04:51,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77222 to 46161. [2024-12-02 07:04:51,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46161 states, 46160 states have (on average 1.1998266897746968) internal successors, (55384), 46160 states have internal predecessors, (55384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:04:52,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46161 states to 46161 states and 55384 transitions. [2024-12-02 07:04:52,013 INFO L78 Accepts]: Start accepts. Automaton has 46161 states and 55384 transitions. Word has length 189 [2024-12-02 07:04:52,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:04:52,013 INFO L471 AbstractCegarLoop]: Abstraction has 46161 states and 55384 transitions. [2024-12-02 07:04:52,014 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 11.862068965517242) internal successors, (344), 29 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:04:52,014 INFO L276 IsEmpty]: Start isEmpty. Operand 46161 states and 55384 transitions. [2024-12-02 07:04:52,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2024-12-02 07:04:52,017 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:04:52,017 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:04:52,024 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2024-12-02 07:04:52,217 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:04:52,218 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:04:52,218 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:04:52,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1385570163, now seen corresponding path program 1 times [2024-12-02 07:04:52,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 07:04:52,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [621600209] [2024-12-02 07:04:52,218 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:04:52,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:04:52,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:04:52,220 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:04:52,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-12-02 07:04:52,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:04:52,371 INFO L256 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-12-02 07:04:52,373 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:04:55,007 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 55 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:04:55,007 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:04:56,024 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 55 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:04:56,024 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 07:04:56,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [621600209] [2024-12-02 07:04:56,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [621600209] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:04:56,024 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 07:04:56,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15] total 31 [2024-12-02 07:04:56,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836566711] [2024-12-02 07:04:56,024 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 07:04:56,025 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-12-02 07:04:56,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 07:04:56,026 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-12-02 07:04:56,026 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=817, Unknown=0, NotChecked=0, Total=930 [2024-12-02 07:04:56,026 INFO L87 Difference]: Start difference. First operand 46161 states and 55384 transitions. Second operand has 31 states, 31 states have (on average 11.419354838709678) internal successors, (354), 31 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:05:02,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:05:02,896 INFO L93 Difference]: Finished difference Result 100494 states and 121146 transitions. [2024-12-02 07:05:02,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-12-02 07:05:02,897 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 11.419354838709678) internal successors, (354), 31 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 190 [2024-12-02 07:05:02,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:05:02,949 INFO L225 Difference]: With dead ends: 100494 [2024-12-02 07:05:02,949 INFO L226 Difference]: Without dead ends: 76378 [2024-12-02 07:05:02,968 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 348 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 650 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=454, Invalid=2408, Unknown=0, NotChecked=0, Total=2862 [2024-12-02 07:05:02,968 INFO L435 NwaCegarLoop]: 126 mSDtfsCounter, 1441 mSDsluCounter, 1914 mSDsCounter, 0 mSdLazyCounter, 2018 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1441 SdHoareTripleChecker+Valid, 2040 SdHoareTripleChecker+Invalid, 2043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 2018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-12-02 07:05:02,969 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1441 Valid, 2040 Invalid, 2043 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 2018 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-12-02 07:05:03,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76378 states. [2024-12-02 07:05:05,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76378 to 42313. [2024-12-02 07:05:05,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42313 states, 42312 states have (on average 1.2003923236906788) internal successors, (50791), 42312 states have internal predecessors, (50791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:05:05,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42313 states to 42313 states and 50791 transitions. [2024-12-02 07:05:05,192 INFO L78 Accepts]: Start accepts. Automaton has 42313 states and 50791 transitions. Word has length 190 [2024-12-02 07:05:05,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:05:05,192 INFO L471 AbstractCegarLoop]: Abstraction has 42313 states and 50791 transitions. [2024-12-02 07:05:05,192 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 11.419354838709678) internal successors, (354), 31 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:05:05,192 INFO L276 IsEmpty]: Start isEmpty. Operand 42313 states and 50791 transitions. [2024-12-02 07:05:05,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2024-12-02 07:05:05,194 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:05:05,194 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:05:05,206 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2024-12-02 07:05:05,395 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:05:05,395 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:05:05,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:05:05,395 INFO L85 PathProgramCache]: Analyzing trace with hash 343763227, now seen corresponding path program 1 times [2024-12-02 07:05:05,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 07:05:05,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1561469574] [2024-12-02 07:05:05,396 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:05:05,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:05:05,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:05:05,398 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:05:05,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2024-12-02 07:05:05,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:05:05,556 INFO L256 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-12-02 07:05:05,558 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:05:07,655 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 22 proven. 130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:05:07,655 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:05:08,457 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 22 proven. 130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:05:08,458 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 07:05:08,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1561469574] [2024-12-02 07:05:08,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1561469574] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:05:08,458 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 07:05:08,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 28 [2024-12-02 07:05:08,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345706709] [2024-12-02 07:05:08,458 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 07:05:08,459 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-12-02 07:05:08,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 07:05:08,459 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-12-02 07:05:08,459 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=666, Unknown=0, NotChecked=0, Total=756 [2024-12-02 07:05:08,459 INFO L87 Difference]: Start difference. First operand 42313 states and 50791 transitions. Second operand has 28 states, 28 states have (on average 13.321428571428571) internal successors, (373), 28 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:05:16,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:05:16,974 INFO L93 Difference]: Finished difference Result 130503 states and 155304 transitions. [2024-12-02 07:05:16,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-12-02 07:05:16,974 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 13.321428571428571) internal successors, (373), 28 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 191 [2024-12-02 07:05:16,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:05:17,044 INFO L225 Difference]: With dead ends: 130503 [2024-12-02 07:05:17,044 INFO L226 Difference]: Without dead ends: 106159 [2024-12-02 07:05:17,059 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 413 GetRequests, 354 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 727 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=759, Invalid=2901, Unknown=0, NotChecked=0, Total=3660 [2024-12-02 07:05:17,059 INFO L435 NwaCegarLoop]: 208 mSDtfsCounter, 1687 mSDsluCounter, 2687 mSDsCounter, 0 mSdLazyCounter, 2475 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1687 SdHoareTripleChecker+Valid, 2895 SdHoareTripleChecker+Invalid, 2502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 2475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-12-02 07:05:17,060 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1687 Valid, 2895 Invalid, 2502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 2475 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-12-02 07:05:17,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106159 states. [2024-12-02 07:05:21,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106159 to 93073. [2024-12-02 07:05:21,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93073 states, 93072 states have (on average 1.1906695891352932) internal successors, (110818), 93072 states have internal predecessors, (110818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:05:21,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93073 states to 93073 states and 110818 transitions. [2024-12-02 07:05:21,806 INFO L78 Accepts]: Start accepts. Automaton has 93073 states and 110818 transitions. Word has length 191 [2024-12-02 07:05:21,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:05:21,807 INFO L471 AbstractCegarLoop]: Abstraction has 93073 states and 110818 transitions. [2024-12-02 07:05:21,807 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 13.321428571428571) internal successors, (373), 28 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:05:21,807 INFO L276 IsEmpty]: Start isEmpty. Operand 93073 states and 110818 transitions. [2024-12-02 07:05:21,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2024-12-02 07:05:21,811 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:05:21,811 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:05:21,818 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2024-12-02 07:05:22,012 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:05:22,012 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:05:22,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:05:22,012 INFO L85 PathProgramCache]: Analyzing trace with hash -266938111, now seen corresponding path program 1 times [2024-12-02 07:05:22,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 07:05:22,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [843566504] [2024-12-02 07:05:22,012 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:05:22,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:05:22,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:05:22,014 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:05:22,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2024-12-02 07:05:22,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:05:22,164 INFO L256 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-12-02 07:05:22,166 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:05:23,097 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 66 proven. 85 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 07:05:23,097 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:05:23,589 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 66 proven. 85 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 07:05:23,590 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 07:05:23,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [843566504] [2024-12-02 07:05:23,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [843566504] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:05:23,590 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 07:05:23,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2024-12-02 07:05:23,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427876247] [2024-12-02 07:05:23,590 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 07:05:23,590 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-12-02 07:05:23,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 07:05:23,591 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-12-02 07:05:23,591 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2024-12-02 07:05:23,591 INFO L87 Difference]: Start difference. First operand 93073 states and 110818 transitions. Second operand has 16 states, 16 states have (on average 21.75) internal successors, (348), 15 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:05:34,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:05:34,050 INFO L93 Difference]: Finished difference Result 316322 states and 382169 transitions. [2024-12-02 07:05:34,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-12-02 07:05:34,051 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 21.75) internal successors, (348), 15 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 192 [2024-12-02 07:05:34,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:05:34,234 INFO L225 Difference]: With dead ends: 316322 [2024-12-02 07:05:34,234 INFO L226 Difference]: Without dead ends: 236307 [2024-12-02 07:05:34,272 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 368 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=249, Invalid=807, Unknown=0, NotChecked=0, Total=1056 [2024-12-02 07:05:34,273 INFO L435 NwaCegarLoop]: 142 mSDtfsCounter, 726 mSDsluCounter, 897 mSDsCounter, 0 mSdLazyCounter, 788 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 726 SdHoareTripleChecker+Valid, 1039 SdHoareTripleChecker+Invalid, 799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 788 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-12-02 07:05:34,273 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [726 Valid, 1039 Invalid, 799 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 788 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-12-02 07:05:34,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236307 states. [2024-12-02 07:05:45,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236307 to 191762. [2024-12-02 07:05:45,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191762 states, 191761 states have (on average 1.1848446764462013) internal successors, (227207), 191761 states have internal predecessors, (227207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:05:45,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191762 states to 191762 states and 227207 transitions. [2024-12-02 07:05:45,462 INFO L78 Accepts]: Start accepts. Automaton has 191762 states and 227207 transitions. Word has length 192 [2024-12-02 07:05:45,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:05:45,463 INFO L471 AbstractCegarLoop]: Abstraction has 191762 states and 227207 transitions. [2024-12-02 07:05:45,463 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 21.75) internal successors, (348), 15 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:05:45,463 INFO L276 IsEmpty]: Start isEmpty. Operand 191762 states and 227207 transitions. [2024-12-02 07:05:45,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2024-12-02 07:05:45,470 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:05:45,470 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:05:45,477 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2024-12-02 07:05:45,670 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:05:45,671 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:05:45,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:05:45,671 INFO L85 PathProgramCache]: Analyzing trace with hash -859807123, now seen corresponding path program 1 times [2024-12-02 07:05:45,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 07:05:45,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [428032904] [2024-12-02 07:05:45,671 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:05:45,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:05:45,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:05:45,673 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:05:45,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2024-12-02 07:05:45,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:05:45,836 INFO L256 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-12-02 07:05:45,838 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:05:48,050 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 65 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:05:48,050 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:05:49,025 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 65 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:05:49,025 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 07:05:49,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [428032904] [2024-12-02 07:05:49,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [428032904] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:05:49,025 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 07:05:49,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13] total 28 [2024-12-02 07:05:49,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273502671] [2024-12-02 07:05:49,026 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 07:05:49,026 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-12-02 07:05:49,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 07:05:49,027 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-12-02 07:05:49,027 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=655, Unknown=0, NotChecked=0, Total=756 [2024-12-02 07:05:49,027 INFO L87 Difference]: Start difference. First operand 191762 states and 227207 transitions. Second operand has 28 states, 28 states have (on average 12.571428571428571) internal successors, (352), 28 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:06:14,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:06:14,869 INFO L93 Difference]: Finished difference Result 449751 states and 533403 transitions. [2024-12-02 07:06:14,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2024-12-02 07:06:14,870 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 12.571428571428571) internal successors, (352), 28 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 192 [2024-12-02 07:06:14,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:06:15,156 INFO L225 Difference]: With dead ends: 449751 [2024-12-02 07:06:15,156 INFO L226 Difference]: Without dead ends: 377907 [2024-12-02 07:06:15,204 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 355 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1374 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=1254, Invalid=4296, Unknown=0, NotChecked=0, Total=5550 [2024-12-02 07:06:15,204 INFO L435 NwaCegarLoop]: 168 mSDtfsCounter, 2927 mSDsluCounter, 1746 mSDsCounter, 0 mSdLazyCounter, 1748 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2927 SdHoareTripleChecker+Valid, 1914 SdHoareTripleChecker+Invalid, 1794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-12-02 07:06:15,204 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2927 Valid, 1914 Invalid, 1794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1748 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-12-02 07:06:15,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377907 states. [2024-12-02 07:06:36,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377907 to 354486. [2024-12-02 07:06:36,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354486 states, 354485 states have (on average 1.1676601266626232) internal successors, (413918), 354485 states have internal predecessors, (413918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:06:36,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354486 states to 354486 states and 413918 transitions. [2024-12-02 07:06:36,923 INFO L78 Accepts]: Start accepts. Automaton has 354486 states and 413918 transitions. Word has length 192 [2024-12-02 07:06:36,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:06:36,923 INFO L471 AbstractCegarLoop]: Abstraction has 354486 states and 413918 transitions. [2024-12-02 07:06:36,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 12.571428571428571) internal successors, (352), 28 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:06:36,923 INFO L276 IsEmpty]: Start isEmpty. Operand 354486 states and 413918 transitions. [2024-12-02 07:06:36,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2024-12-02 07:06:36,935 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:06:36,935 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:06:36,943 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2024-12-02 07:06:37,135 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:06:37,135 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:06:37,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:06:37,136 INFO L85 PathProgramCache]: Analyzing trace with hash 836496107, now seen corresponding path program 1 times [2024-12-02 07:06:37,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 07:06:37,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [171320267] [2024-12-02 07:06:37,136 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:06:37,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:06:37,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:06:37,138 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:06:37,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac2c441-a633-4185-b7ff-fcf8ff3d91d1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2024-12-02 07:06:37,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:06:37,287 INFO L256 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-12-02 07:06:37,289 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:06:39,903 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 40 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:06:39,903 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:06:41,041 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 40 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:06:41,041 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 07:06:41,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [171320267] [2024-12-02 07:06:41,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [171320267] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:06:41,041 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 07:06:41,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15] total 32 [2024-12-02 07:06:41,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109696854] [2024-12-02 07:06:41,041 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 07:06:41,042 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-12-02 07:06:41,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 07:06:41,042 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-12-02 07:06:41,043 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=876, Unknown=0, NotChecked=0, Total=992 [2024-12-02 07:06:41,043 INFO L87 Difference]: Start difference. First operand 354486 states and 413918 transitions. Second operand has 32 states, 32 states have (on average 11.46875) internal successors, (367), 32 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)