./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/zonotope_3.c.v+lhb-reducer.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_e2500156-d412-4ca2-9ce6-5b700360a7b7/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2500156-d412-4ca2-9ce6-5b700360a7b7/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_e2500156-d412-4ca2-9ce6-5b700360a7b7/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2500156-d412-4ca2-9ce6-5b700360a7b7/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/zonotope_3.c.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2500156-d412-4ca2-9ce6-5b700360a7b7/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_e2500156-d412-4ca2-9ce6-5b700360a7b7/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 8a7308dc5f86f1f4eda090a45a8f84359680ddfad7d17e2c5273bd494b2cbe5e --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 06:10:06,927 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 06:10:06,982 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2500156-d412-4ca2-9ce6-5b700360a7b7/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 06:10:06,987 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 06:10:06,987 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 06:10:07,008 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 06:10:07,009 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 06:10:07,009 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 06:10:07,009 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 06:10:07,010 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 06:10:07,010 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 06:10:07,010 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 06:10:07,010 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 06:10:07,010 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 06:10:07,010 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 06:10:07,010 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 06:10:07,011 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 06:10:07,011 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 06:10:07,011 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 06:10:07,011 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 06:10:07,011 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 06:10:07,011 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 06:10:07,011 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 06:10:07,011 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 06:10:07,011 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 06:10:07,011 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 06:10:07,011 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 06:10:07,011 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 06:10:07,011 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 06:10:07,011 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 06:10:07,012 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 06:10:07,012 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 06:10:07,012 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 06:10:07,012 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 06:10:07,012 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 06:10:07,012 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 06:10:07,012 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 06:10:07,012 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 06:10:07,012 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 06:10:07,013 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 06:10:07,013 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 06:10:07,013 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 06:10:07,013 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 06:10:07,013 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 06:10:07,013 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 06:10:07,013 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 06:10:07,013 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 06:10:07,013 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 06:10:07,013 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_e2500156-d412-4ca2-9ce6-5b700360a7b7/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 -> 8a7308dc5f86f1f4eda090a45a8f84359680ddfad7d17e2c5273bd494b2cbe5e [2024-12-02 06:10:07,240 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 06:10:07,248 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 06:10:07,250 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 06:10:07,251 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 06:10:07,252 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 06:10:07,253 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2500156-d412-4ca2-9ce6-5b700360a7b7/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/float-benchs/zonotope_3.c.v+lhb-reducer.c [2024-12-02 06:10:09,896 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2500156-d412-4ca2-9ce6-5b700360a7b7/bin/uautomizer-verify-84ZbGMXZE1/data/f3fe23285/85c4b0a440d94e17867080ff1c671477/FLAGc33f629ba [2024-12-02 06:10:10,136 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 06:10:10,137 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2500156-d412-4ca2-9ce6-5b700360a7b7/sv-benchmarks/c/float-benchs/zonotope_3.c.v+lhb-reducer.c [2024-12-02 06:10:10,147 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2500156-d412-4ca2-9ce6-5b700360a7b7/bin/uautomizer-verify-84ZbGMXZE1/data/f3fe23285/85c4b0a440d94e17867080ff1c671477/FLAGc33f629ba [2024-12-02 06:10:10,478 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2500156-d412-4ca2-9ce6-5b700360a7b7/bin/uautomizer-verify-84ZbGMXZE1/data/f3fe23285/85c4b0a440d94e17867080ff1c671477 [2024-12-02 06:10:10,480 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 06:10:10,481 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 06:10:10,482 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 06:10:10,482 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 06:10:10,485 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 06:10:10,485 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:10:10" (1/1) ... [2024-12-02 06:10:10,486 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ae820be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:10:10, skipping insertion in model container [2024-12-02 06:10:10,486 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:10:10" (1/1) ... [2024-12-02 06:10:10,509 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 06:10:10,701 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_e2500156-d412-4ca2-9ce6-5b700360a7b7/sv-benchmarks/c/float-benchs/zonotope_3.c.v+lhb-reducer.c[12131,12144] [2024-12-02 06:10:10,710 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 06:10:10,720 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 06:10:10,765 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_e2500156-d412-4ca2-9ce6-5b700360a7b7/sv-benchmarks/c/float-benchs/zonotope_3.c.v+lhb-reducer.c[12131,12144] [2024-12-02 06:10:10,770 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 06:10:10,783 INFO L204 MainTranslator]: Completed translation [2024-12-02 06:10:10,784 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:10:10 WrapperNode [2024-12-02 06:10:10,784 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 06:10:10,785 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 06:10:10,785 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 06:10:10,785 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 06:10:10,791 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:10:10" (1/1) ... [2024-12-02 06:10:10,800 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:10:10" (1/1) ... [2024-12-02 06:10:10,827 INFO L138 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 613 [2024-12-02 06:10:10,827 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 06:10:10,827 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 06:10:10,827 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 06:10:10,828 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 06:10:10,836 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:10:10" (1/1) ... [2024-12-02 06:10:10,836 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:10:10" (1/1) ... [2024-12-02 06:10:10,839 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:10:10" (1/1) ... [2024-12-02 06:10:10,852 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 06:10:10,852 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:10:10" (1/1) ... [2024-12-02 06:10:10,852 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:10:10" (1/1) ... [2024-12-02 06:10:10,862 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:10:10" (1/1) ... [2024-12-02 06:10:10,863 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:10:10" (1/1) ... [2024-12-02 06:10:10,866 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:10:10" (1/1) ... [2024-12-02 06:10:10,867 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:10:10" (1/1) ... [2024-12-02 06:10:10,868 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:10:10" (1/1) ... [2024-12-02 06:10:10,870 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 06:10:10,871 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 06:10:10,871 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 06:10:10,871 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 06:10:10,872 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:10:10" (1/1) ... [2024-12-02 06:10:10,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 06:10:10,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2500156-d412-4ca2-9ce6-5b700360a7b7/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:10:10,899 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2500156-d412-4ca2-9ce6-5b700360a7b7/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 06:10:10,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2500156-d412-4ca2-9ce6-5b700360a7b7/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 06:10:10,923 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 06:10:10,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 06:10:10,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 06:10:10,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 06:10:11,027 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 06:10:11,029 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 06:10:11,323 INFO L? ?]: Removed 179 outVars from TransFormulas that were not future-live. [2024-12-02 06:10:11,323 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 06:10:11,331 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 06:10:11,332 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-12-02 06:10:11,332 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:10:11 BoogieIcfgContainer [2024-12-02 06:10:11,332 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 06:10:11,334 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 06:10:11,334 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 06:10:11,339 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 06:10:11,339 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 06:10:10" (1/3) ... [2024-12-02 06:10:11,339 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@692144f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:10:11, skipping insertion in model container [2024-12-02 06:10:11,339 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:10:10" (2/3) ... [2024-12-02 06:10:11,340 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@692144f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:10:11, skipping insertion in model container [2024-12-02 06:10:11,340 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:10:11" (3/3) ... [2024-12-02 06:10:11,341 INFO L128 eAbstractionObserver]: Analyzing ICFG zonotope_3.c.v+lhb-reducer.c [2024-12-02 06:10:11,355 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 06:10:11,357 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG zonotope_3.c.v+lhb-reducer.c that has 1 procedures, 54 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-12-02 06:10:11,413 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 06:10:11,425 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;@ee3cfaa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 06:10:11,425 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 06:10:11,428 INFO L276 IsEmpty]: Start isEmpty. Operand has 54 states, 52 states have (on average 1.8461538461538463) internal successors, (96), 53 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 06:10:11,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-12-02 06:10:11,434 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:10:11,434 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] [2024-12-02 06:10:11,435 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:10:11,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:10:11,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1627818147, now seen corresponding path program 1 times [2024-12-02 06:10:11,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:10:11,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777258458] [2024-12-02 06:10:11,447 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:10:11,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:10:11,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:10:11,805 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 06:10:11,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:10:11,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777258458] [2024-12-02 06:10:11,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777258458] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:10:11,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:10:11,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 06:10:11,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336422569] [2024-12-02 06:10:11,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:10:11,812 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 06:10:11,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:10:11,828 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 06:10:11,829 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 06:10:11,830 INFO L87 Difference]: Start difference. First operand has 54 states, 52 states have (on average 1.8461538461538463) internal successors, (96), 53 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) Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 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 06:10:11,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:10:11,880 INFO L93 Difference]: Finished difference Result 61 states and 103 transitions. [2024-12-02 06:10:11,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 06:10:11,882 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2024-12-02 06:10:11,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:10:11,888 INFO L225 Difference]: With dead ends: 61 [2024-12-02 06:10:11,888 INFO L226 Difference]: Without dead ends: 51 [2024-12-02 06:10:11,891 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 06:10:11,893 INFO L435 NwaCegarLoop]: 91 mSDtfsCounter, 0 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:10:11,893 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 352 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:10:11,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-12-02 06:10:11,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2024-12-02 06:10:11,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.08) internal successors, (54), 50 states have internal predecessors, (54), 0 states have call successors, (0), 0 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 06:10:11,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 54 transitions. [2024-12-02 06:10:11,920 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 54 transitions. Word has length 45 [2024-12-02 06:10:11,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:10:11,920 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 54 transitions. [2024-12-02 06:10:11,920 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 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 06:10:11,920 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 54 transitions. [2024-12-02 06:10:11,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-12-02 06:10:11,921 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:10:11,921 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] [2024-12-02 06:10:11,921 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 06:10:11,922 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:10:11,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:10:11,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1610807486, now seen corresponding path program 1 times [2024-12-02 06:10:11,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:10:11,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881831025] [2024-12-02 06:10:11,922 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:10:11,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:10:11,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:10:12,228 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 06:10:12,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:10:12,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881831025] [2024-12-02 06:10:12,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881831025] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:10:12,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:10:12,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-12-02 06:10:12,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545325744] [2024-12-02 06:10:12,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:10:12,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-12-02 06:10:12,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:10:12,230 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-12-02 06:10:12,231 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2024-12-02 06:10:12,231 INFO L87 Difference]: Start difference. First operand 51 states and 54 transitions. Second operand has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 0 states have call successors, (0), 0 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 06:10:12,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:10:12,302 INFO L93 Difference]: Finished difference Result 64 states and 70 transitions. [2024-12-02 06:10:12,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 06:10:12,303 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2024-12-02 06:10:12,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:10:12,304 INFO L225 Difference]: With dead ends: 64 [2024-12-02 06:10:12,304 INFO L226 Difference]: Without dead ends: 57 [2024-12-02 06:10:12,304 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2024-12-02 06:10:12,305 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 6 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 06:10:12,305 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 134 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 06:10:12,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-12-02 06:10:12,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 53. [2024-12-02 06:10:12,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.0769230769230769) internal successors, (56), 52 states have internal predecessors, (56), 0 states have call successors, (0), 0 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 06:10:12,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 56 transitions. [2024-12-02 06:10:12,310 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 56 transitions. Word has length 45 [2024-12-02 06:10:12,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:10:12,310 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 56 transitions. [2024-12-02 06:10:12,311 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 0 states have call successors, (0), 0 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 06:10:12,311 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 56 transitions. [2024-12-02 06:10:12,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-12-02 06:10:12,312 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:10:12,312 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 06:10:12,312 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 06:10:12,312 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:10:12,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:10:12,313 INFO L85 PathProgramCache]: Analyzing trace with hash -234002152, now seen corresponding path program 1 times [2024-12-02 06:10:12,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:10:12,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353851920] [2024-12-02 06:10:12,313 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:10:12,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:10:12,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:10:12,377 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:10:12,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:10:12,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353851920] [2024-12-02 06:10:12,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353851920] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:10:12,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:10:12,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:10:12,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713398378] [2024-12-02 06:10:12,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:10:12,378 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:10:12,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:10:12,379 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:10:12,379 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:10:12,379 INFO L87 Difference]: Start difference. First operand 53 states and 56 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 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 06:10:12,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:10:12,389 INFO L93 Difference]: Finished difference Result 67 states and 73 transitions. [2024-12-02 06:10:12,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:10:12,389 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2024-12-02 06:10:12,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:10:12,390 INFO L225 Difference]: With dead ends: 67 [2024-12-02 06:10:12,390 INFO L226 Difference]: Without dead ends: 52 [2024-12-02 06:10:12,390 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 06:10:12,391 INFO L435 NwaCegarLoop]: 54 mSDtfsCounter, 0 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:10:12,391 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 103 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:10:12,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-12-02 06:10:12,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2024-12-02 06:10:12,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.0392156862745099) internal successors, (53), 51 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:10:12,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 53 transitions. [2024-12-02 06:10:12,395 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 53 transitions. Word has length 50 [2024-12-02 06:10:12,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:10:12,396 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 53 transitions. [2024-12-02 06:10:12,396 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 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 06:10:12,396 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 53 transitions. [2024-12-02 06:10:12,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-12-02 06:10:12,397 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:10:12,397 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 06:10:12,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 06:10:12,397 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:10:12,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:10:12,398 INFO L85 PathProgramCache]: Analyzing trace with hash -686591427, now seen corresponding path program 1 times [2024-12-02 06:10:12,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:10:12,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141432625] [2024-12-02 06:10:12,398 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:10:12,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:10:12,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:10:12,649 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:10:12,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:10:12,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141432625] [2024-12-02 06:10:12,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141432625] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:10:12,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608796710] [2024-12-02 06:10:12,650 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:10:12,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:10:12,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2500156-d412-4ca2-9ce6-5b700360a7b7/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:10:12,652 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2500156-d412-4ca2-9ce6-5b700360a7b7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:10:12,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2500156-d412-4ca2-9ce6-5b700360a7b7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 06:10:12,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:10:12,866 INFO L256 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-12-02 06:10:12,871 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:10:12,992 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:10:12,992 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:10:13,272 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:10:13,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1608796710] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:10:13,273 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:10:13,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-12-02 06:10:13,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254993407] [2024-12-02 06:10:13,273 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:10:13,274 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-12-02 06:10:13,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:10:13,275 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-12-02 06:10:13,275 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-12-02 06:10:13,275 INFO L87 Difference]: Start difference. First operand 52 states and 53 transitions. Second operand has 25 states, 25 states have (on average 3.96) internal successors, (99), 25 states have internal predecessors, (99), 0 states have call successors, (0), 0 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 06:10:13,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:10:13,389 INFO L93 Difference]: Finished difference Result 119 states and 132 transitions. [2024-12-02 06:10:13,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-12-02 06:10:13,389 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.96) internal successors, (99), 25 states have internal predecessors, (99), 0 states have call successors, (0), 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 50 [2024-12-02 06:10:13,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:10:13,390 INFO L225 Difference]: With dead ends: 119 [2024-12-02 06:10:13,390 INFO L226 Difference]: Without dead ends: 112 [2024-12-02 06:10:13,391 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-12-02 06:10:13,391 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 100 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 06:10:13,392 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 111 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 06:10:13,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2024-12-02 06:10:13,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2024-12-02 06:10:13,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 1.018018018018018) internal successors, (113), 111 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 06:10:13,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 113 transitions. [2024-12-02 06:10:13,398 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 113 transitions. Word has length 50 [2024-12-02 06:10:13,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:10:13,398 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 113 transitions. [2024-12-02 06:10:13,398 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.96) internal successors, (99), 25 states have internal predecessors, (99), 0 states have call successors, (0), 0 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 06:10:13,398 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 113 transitions. [2024-12-02 06:10:13,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-12-02 06:10:13,399 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:10:13,400 INFO L218 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:10:13,409 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2500156-d412-4ca2-9ce6-5b700360a7b7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 06:10:13,603 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2500156-d412-4ca2-9ce6-5b700360a7b7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:10:13,603 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:10:13,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:10:13,604 INFO L85 PathProgramCache]: Analyzing trace with hash 723240189, now seen corresponding path program 2 times [2024-12-02 06:10:13,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:10:13,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862936768] [2024-12-02 06:10:13,604 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 06:10:13,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:10:13,688 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 06:10:13,688 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:10:14,536 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 0 proven. 416 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:10:14,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:10:14,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862936768] [2024-12-02 06:10:14,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862936768] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:10:14,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1026994898] [2024-12-02 06:10:14,537 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 06:10:14,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:10:14,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2500156-d412-4ca2-9ce6-5b700360a7b7/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:10:14,539 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2500156-d412-4ca2-9ce6-5b700360a7b7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:10:14,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2500156-d412-4ca2-9ce6-5b700360a7b7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 06:10:14,865 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 06:10:14,865 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:10:14,870 INFO L256 TraceCheckSpWp]: Trace formula consists of 970 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-12-02 06:10:14,875 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:10:15,041 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 0 proven. 416 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:10:15,041 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:10:15,844 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 0 proven. 416 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:10:15,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1026994898] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:10:15,844 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:10:15,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2024-12-02 06:10:15,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042495779] [2024-12-02 06:10:15,845 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:10:15,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-12-02 06:10:15,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:10:15,846 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-12-02 06:10:15,847 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-12-02 06:10:15,847 INFO L87 Difference]: Start difference. First operand 112 states and 113 transitions. Second operand has 49 states, 49 states have (on average 4.469387755102041) internal successors, (219), 49 states have internal predecessors, (219), 0 states have call successors, (0), 0 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 06:10:16,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:10:16,070 INFO L93 Difference]: Finished difference Result 239 states and 264 transitions. [2024-12-02 06:10:16,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-12-02 06:10:16,071 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 4.469387755102041) internal successors, (219), 49 states have internal predecessors, (219), 0 states have call successors, (0), 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 06:10:16,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:10:16,072 INFO L225 Difference]: With dead ends: 239 [2024-12-02 06:10:16,072 INFO L226 Difference]: Without dead ends: 232 [2024-12-02 06:10:16,074 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-12-02 06:10:16,074 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 85 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 06:10:16,074 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 257 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 06:10:16,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2024-12-02 06:10:16,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 232. [2024-12-02 06:10:16,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 231 states have (on average 1.0086580086580086) internal successors, (233), 231 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 06:10:16,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 233 transitions. [2024-12-02 06:10:16,085 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 233 transitions. Word has length 110 [2024-12-02 06:10:16,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:10:16,086 INFO L471 AbstractCegarLoop]: Abstraction has 232 states and 233 transitions. [2024-12-02 06:10:16,086 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 4.469387755102041) internal successors, (219), 49 states have internal predecessors, (219), 0 states have call successors, (0), 0 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 06:10:16,086 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 233 transitions. [2024-12-02 06:10:16,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2024-12-02 06:10:16,088 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:10:16,088 INFO L218 NwaCegarLoop]: trace histogram [38, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:10:16,098 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2500156-d412-4ca2-9ce6-5b700360a7b7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 06:10:16,289 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2500156-d412-4ca2-9ce6-5b700360a7b7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:10:16,289 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:10:16,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:10:16,289 INFO L85 PathProgramCache]: Analyzing trace with hash -54490499, now seen corresponding path program 3 times [2024-12-02 06:10:16,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:10:16,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215293060] [2024-12-02 06:10:16,289 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 06:10:16,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:10:16,431 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 38 check-sat command(s) [2024-12-02 06:10:16,431 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:10:18,347 INFO L134 CoverageAnalysis]: Checked inductivity of 3404 backedges. 0 proven. 3404 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:10:18,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:10:18,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215293060] [2024-12-02 06:10:18,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215293060] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:10:18,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629485344] [2024-12-02 06:10:18,348 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 06:10:18,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:10:18,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2500156-d412-4ca2-9ce6-5b700360a7b7/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:10:18,349 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2500156-d412-4ca2-9ce6-5b700360a7b7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:10:18,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2500156-d412-4ca2-9ce6-5b700360a7b7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 06:10:18,859 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 38 check-sat command(s) [2024-12-02 06:10:18,859 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:10:18,865 INFO L256 TraceCheckSpWp]: Trace formula consists of 1930 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-12-02 06:10:18,871 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:10:19,114 INFO L134 CoverageAnalysis]: Checked inductivity of 3404 backedges. 0 proven. 3404 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:10:19,115 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:10:21,519 INFO L134 CoverageAnalysis]: Checked inductivity of 3404 backedges. 0 proven. 3404 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:10:21,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1629485344] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:10:21,520 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:10:21,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 97 [2024-12-02 06:10:21,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343212534] [2024-12-02 06:10:21,520 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:10:21,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2024-12-02 06:10:21,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:10:21,524 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2024-12-02 06:10:21,525 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2024-12-02 06:10:21,525 INFO L87 Difference]: Start difference. First operand 232 states and 233 transitions. Second operand has 97 states, 97 states have (on average 4.731958762886598) internal successors, (459), 97 states have internal predecessors, (459), 0 states have call successors, (0), 0 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 06:10:21,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:10:21,944 INFO L93 Difference]: Finished difference Result 479 states and 528 transitions. [2024-12-02 06:10:21,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2024-12-02 06:10:21,945 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 4.731958762886598) internal successors, (459), 97 states have internal predecessors, (459), 0 states have call successors, (0), 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 230 [2024-12-02 06:10:21,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:10:21,946 INFO L225 Difference]: With dead ends: 479 [2024-12-02 06:10:21,946 INFO L226 Difference]: Without dead ends: 472 [2024-12-02 06:10:21,947 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 507 GetRequests, 412 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2024-12-02 06:10:21,948 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 88 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 06:10:21,948 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 401 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 06:10:21,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2024-12-02 06:10:21,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 472. [2024-12-02 06:10:21,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 472 states, 471 states have (on average 1.0042462845010616) internal successors, (473), 471 states have internal predecessors, (473), 0 states have call successors, (0), 0 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 06:10:21,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 473 transitions. [2024-12-02 06:10:21,962 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 473 transitions. Word has length 230 [2024-12-02 06:10:21,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:10:21,962 INFO L471 AbstractCegarLoop]: Abstraction has 472 states and 473 transitions. [2024-12-02 06:10:21,963 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 4.731958762886598) internal successors, (459), 97 states have internal predecessors, (459), 0 states have call successors, (0), 0 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 06:10:21,963 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 473 transitions. [2024-12-02 06:10:21,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2024-12-02 06:10:21,968 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:10:21,968 INFO L218 NwaCegarLoop]: trace histogram [86, 85, 85, 85, 85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:10:21,980 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2500156-d412-4ca2-9ce6-5b700360a7b7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 06:10:22,168 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2500156-d412-4ca2-9ce6-5b700360a7b7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:10:22,169 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:10:22,169 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:10:22,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1315269251, now seen corresponding path program 4 times [2024-12-02 06:10:22,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:10:22,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683876160] [2024-12-02 06:10:22,170 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 06:10:22,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:10:22,450 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 06:10:22,450 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:10:28,440 INFO L134 CoverageAnalysis]: Checked inductivity of 18020 backedges. 0 proven. 18020 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:10:28,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:10:28,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683876160] [2024-12-02 06:10:28,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683876160] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:10:28,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [662597762] [2024-12-02 06:10:28,441 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 06:10:28,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:10:28,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2500156-d412-4ca2-9ce6-5b700360a7b7/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:10:28,442 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2500156-d412-4ca2-9ce6-5b700360a7b7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:10:28,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2500156-d412-4ca2-9ce6-5b700360a7b7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 06:10:29,213 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 06:10:29,213 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:10:29,225 INFO L256 TraceCheckSpWp]: Trace formula consists of 3850 conjuncts, 96 conjuncts are in the unsatisfiable core [2024-12-02 06:10:29,233 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:10:29,667 INFO L134 CoverageAnalysis]: Checked inductivity of 18020 backedges. 0 proven. 18020 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:10:29,667 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:10:38,397 INFO L134 CoverageAnalysis]: Checked inductivity of 18020 backedges. 0 proven. 18020 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:10:38,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [662597762] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:10:38,398 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:10:38,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97, 97] total 192 [2024-12-02 06:10:38,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536162461] [2024-12-02 06:10:38,398 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:10:38,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2024-12-02 06:10:38,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:10:38,405 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2024-12-02 06:10:38,413 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18336, Invalid=18336, Unknown=0, NotChecked=0, Total=36672 [2024-12-02 06:10:38,413 INFO L87 Difference]: Start difference. First operand 472 states and 473 transitions. Second operand has 192 states, 192 states have (on average 4.864583333333333) internal successors, (934), 192 states have internal predecessors, (934), 0 states have call successors, (0), 0 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 06:10:40,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:10:40,053 INFO L93 Difference]: Finished difference Result 959 states and 1056 transitions. [2024-12-02 06:10:40,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2024-12-02 06:10:40,054 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 192 states have (on average 4.864583333333333) internal successors, (934), 192 states have internal predecessors, (934), 0 states have call successors, (0), 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 470 [2024-12-02 06:10:40,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:10:40,056 INFO L225 Difference]: With dead ends: 959 [2024-12-02 06:10:40,056 INFO L226 Difference]: Without dead ends: 952 [2024-12-02 06:10:40,059 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1035 GetRequests, 845 SyntacticMatches, 0 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.2s TimeCoverageRelationStatistics Valid=18336, Invalid=18336, Unknown=0, NotChecked=0, Total=36672 [2024-12-02 06:10:40,060 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 79 mSDsluCounter, 610 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 06:10:40,060 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 641 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 428 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 06:10:40,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 952 states. [2024-12-02 06:10:40,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 952 to 952. [2024-12-02 06:10:40,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 952 states, 951 states have (on average 1.0021030494216614) internal successors, (953), 951 states have internal predecessors, (953), 0 states have call successors, (0), 0 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 06:10:40,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 952 states to 952 states and 953 transitions. [2024-12-02 06:10:40,076 INFO L78 Accepts]: Start accepts. Automaton has 952 states and 953 transitions. Word has length 470 [2024-12-02 06:10:40,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:10:40,077 INFO L471 AbstractCegarLoop]: Abstraction has 952 states and 953 transitions. [2024-12-02 06:10:40,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 192 states have (on average 4.864583333333333) internal successors, (934), 192 states have internal predecessors, (934), 0 states have call successors, (0), 0 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 06:10:40,078 INFO L276 IsEmpty]: Start isEmpty. Operand 952 states and 953 transitions. [2024-12-02 06:10:40,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 951 [2024-12-02 06:10:40,096 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:10:40,097 INFO L218 NwaCegarLoop]: trace histogram [182, 181, 181, 181, 181, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:10:40,107 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2500156-d412-4ca2-9ce6-5b700360a7b7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 06:10:40,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2500156-d412-4ca2-9ce6-5b700360a7b7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:10:40,297 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:10:40,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:10:40,298 INFO L85 PathProgramCache]: Analyzing trace with hash 2073078653, now seen corresponding path program 5 times [2024-12-02 06:10:40,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:10:40,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654978085] [2024-12-02 06:10:40,298 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 06:10:40,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:10:41,282 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 182 check-sat command(s) [2024-12-02 06:10:41,283 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:11:07,254 INFO L134 CoverageAnalysis]: Checked inductivity of 81812 backedges. 0 proven. 81812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:11:07,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:11:07,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654978085] [2024-12-02 06:11:07,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654978085] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:11:07,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627197553] [2024-12-02 06:11:07,255 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 06:11:07,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:11:07,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2500156-d412-4ca2-9ce6-5b700360a7b7/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:11:07,256 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2500156-d412-4ca2-9ce6-5b700360a7b7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:11:07,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2500156-d412-4ca2-9ce6-5b700360a7b7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 06:11:10,053 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 182 check-sat command(s) [2024-12-02 06:11:10,053 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:11:10,081 INFO L256 TraceCheckSpWp]: Trace formula consists of 7690 conjuncts, 192 conjuncts are in the unsatisfiable core [2024-12-02 06:11:10,094 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:11:10,973 INFO L134 CoverageAnalysis]: Checked inductivity of 81812 backedges. 0 proven. 81812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:11:10,973 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:11:45,451 INFO L134 CoverageAnalysis]: Checked inductivity of 81812 backedges. 0 proven. 81812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:11:45,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [627197553] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:11:45,451 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:11:45,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [193, 193, 193] total 385 [2024-12-02 06:11:45,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576296753] [2024-12-02 06:11:45,451 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:11:45,452 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 385 states [2024-12-02 06:11:45,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:11:45,464 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 385 interpolants. [2024-12-02 06:11:45,472 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=73920, Invalid=73920, Unknown=0, NotChecked=0, Total=147840 [2024-12-02 06:11:45,472 INFO L87 Difference]: Start difference. First operand 952 states and 953 transitions. Second operand has 385 states, 385 states have (on average 4.932467532467532) internal successors, (1899), 385 states have internal predecessors, (1899), 0 states have call successors, (0), 0 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 06:11:55,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:11:55,708 INFO L93 Difference]: Finished difference Result 1919 states and 2112 transitions. [2024-12-02 06:11:55,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 384 states. [2024-12-02 06:11:55,709 INFO L78 Accepts]: Start accepts. Automaton has has 385 states, 385 states have (on average 4.932467532467532) internal successors, (1899), 385 states have internal predecessors, (1899), 0 states have call successors, (0), 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 950 [2024-12-02 06:11:55,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:11:55,714 INFO L225 Difference]: With dead ends: 1919 [2024-12-02 06:11:55,714 INFO L226 Difference]: Without dead ends: 1912 [2024-12-02 06:11:55,718 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2091 GetRequests, 1708 SyntacticMatches, 0 SemanticMatches, 383 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 760 ImplicationChecksByTransitivity, 44.7s TimeCoverageRelationStatistics Valid=73920, Invalid=73920, Unknown=0, NotChecked=0, Total=147840 [2024-12-02 06:11:55,719 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 80 mSDsluCounter, 1242 mSDsCounter, 0 mSdLazyCounter, 820 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 1273 SdHoareTripleChecker+Invalid, 839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 820 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:11:55,719 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 1273 Invalid, 839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 820 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-12-02 06:11:55,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1912 states. [2024-12-02 06:11:55,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1912 to 1912. [2024-12-02 06:11:55,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1912 states, 1911 states have (on average 1.0010465724751438) internal successors, (1913), 1911 states have internal predecessors, (1913), 0 states have call successors, (0), 0 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 06:11:55,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1912 states to 1912 states and 1913 transitions. [2024-12-02 06:11:55,739 INFO L78 Accepts]: Start accepts. Automaton has 1912 states and 1913 transitions. Word has length 950 [2024-12-02 06:11:55,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:11:55,740 INFO L471 AbstractCegarLoop]: Abstraction has 1912 states and 1913 transitions. [2024-12-02 06:11:55,741 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 385 states, 385 states have (on average 4.932467532467532) internal successors, (1899), 385 states have internal predecessors, (1899), 0 states have call successors, (0), 0 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 06:11:55,741 INFO L276 IsEmpty]: Start isEmpty. Operand 1912 states and 1913 transitions. [2024-12-02 06:11:55,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1911 [2024-12-02 06:11:55,756 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:11:55,756 INFO L218 NwaCegarLoop]: trace histogram [374, 373, 373, 373, 373, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:11:55,772 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2500156-d412-4ca2-9ce6-5b700360a7b7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-12-02 06:11:55,957 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2500156-d412-4ca2-9ce6-5b700360a7b7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:11:55,957 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:11:55,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:11:55,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1619318653, now seen corresponding path program 6 times [2024-12-02 06:11:55,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:11:55,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402273577] [2024-12-02 06:11:55,958 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 06:11:55,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:11:57,302 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 374 check-sat command(s) [2024-12-02 06:11:57,302 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:14:17,024 INFO L134 CoverageAnalysis]: Checked inductivity of 347636 backedges. 0 proven. 347636 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:14:17,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:14:17,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402273577] [2024-12-02 06:14:17,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402273577] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:14:17,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1839808301] [2024-12-02 06:14:17,025 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 06:14:17,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:14:17,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2500156-d412-4ca2-9ce6-5b700360a7b7/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:14:17,026 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2500156-d412-4ca2-9ce6-5b700360a7b7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:14:17,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2500156-d412-4ca2-9ce6-5b700360a7b7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 06:14:26,928 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 374 check-sat command(s) [2024-12-02 06:14:26,928 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:14:26,996 INFO L256 TraceCheckSpWp]: Trace formula consists of 15370 conjuncts, 384 conjuncts are in the unsatisfiable core [2024-12-02 06:14:27,033 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:14:28,591 INFO L134 CoverageAnalysis]: Checked inductivity of 347636 backedges. 0 proven. 347636 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:14:28,591 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:16:48,544 INFO L134 CoverageAnalysis]: Checked inductivity of 347636 backedges. 0 proven. 347636 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:16:48,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1839808301] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:16:48,544 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:16:48,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [385, 385, 385] total 769 [2024-12-02 06:16:48,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419597435] [2024-12-02 06:16:48,545 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:16:48,547 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 769 states [2024-12-02 06:16:48,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:16:48,578 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 769 interpolants. [2024-12-02 06:16:48,593 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=295296, Invalid=295296, Unknown=0, NotChecked=0, Total=590592 [2024-12-02 06:16:48,595 INFO L87 Difference]: Start difference. First operand 1912 states and 1913 transitions. Second operand has 769 states, 769 states have (on average 4.9661898569570875) internal successors, (3819), 769 states have internal predecessors, (3819), 0 states have call successors, (0), 0 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 06:18:05,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:18:05,628 INFO L93 Difference]: Finished difference Result 3839 states and 4224 transitions. [2024-12-02 06:18:05,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 768 states. [2024-12-02 06:18:05,629 INFO L78 Accepts]: Start accepts. Automaton has has 769 states, 769 states have (on average 4.9661898569570875) internal successors, (3819), 769 states have internal predecessors, (3819), 0 states have call successors, (0), 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 1910 [2024-12-02 06:18:05,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:18:05,641 INFO L225 Difference]: With dead ends: 3839 [2024-12-02 06:18:05,642 INFO L226 Difference]: Without dead ends: 3832 [2024-12-02 06:18:05,663 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4203 GetRequests, 3436 SyntacticMatches, 0 SemanticMatches, 767 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1528 ImplicationChecksByTransitivity, 183.5s TimeCoverageRelationStatistics Valid=295296, Invalid=295296, Unknown=0, NotChecked=0, Total=590592 [2024-12-02 06:18:05,664 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 64 mSDsluCounter, 2398 mSDsCounter, 0 mSdLazyCounter, 1606 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 2429 SdHoareTripleChecker+Invalid, 1621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:18:05,664 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 2429 Invalid, 1621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1606 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-12-02 06:18:05,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3832 states. [2024-12-02 06:18:05,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3832 to 3832. [2024-12-02 06:18:05,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3832 states, 3831 states have (on average 1.0005220569042026) internal successors, (3833), 3831 states have internal predecessors, (3833), 0 states have call successors, (0), 0 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 06:18:05,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3832 states to 3832 states and 3833 transitions. [2024-12-02 06:18:05,724 INFO L78 Accepts]: Start accepts. Automaton has 3832 states and 3833 transitions. Word has length 1910 [2024-12-02 06:18:05,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:18:05,726 INFO L471 AbstractCegarLoop]: Abstraction has 3832 states and 3833 transitions. [2024-12-02 06:18:05,728 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 769 states, 769 states have (on average 4.9661898569570875) internal successors, (3819), 769 states have internal predecessors, (3819), 0 states have call successors, (0), 0 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 06:18:05,728 INFO L276 IsEmpty]: Start isEmpty. Operand 3832 states and 3833 transitions. [2024-12-02 06:18:05,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3831 [2024-12-02 06:18:05,818 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:18:05,819 INFO L218 NwaCegarLoop]: trace histogram [758, 757, 757, 757, 757, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:18:05,900 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2500156-d412-4ca2-9ce6-5b700360a7b7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-12-02 06:18:06,019 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2500156-d412-4ca2-9ce6-5b700360a7b7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:18:06,019 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:18:06,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:18:06,021 INFO L85 PathProgramCache]: Analyzing trace with hash -292737155, now seen corresponding path program 7 times [2024-12-02 06:18:06,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:18:06,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127398833] [2024-12-02 06:18:06,021 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-12-02 06:18:06,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:18:08,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat