./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/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_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/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_015372eb-d1a5-4438-970b-d5529eda1c18/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 e3fe12f9ba7a27693660ab3b9c436489448c0880075d8a5a83d98427fc7a74d3 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 06:41:16,523 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 06:41:16,582 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 06:41:16,587 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 06:41:16,587 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 06:41:16,607 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 06:41:16,608 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 06:41:16,608 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 06:41:16,608 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 06:41:16,608 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 06:41:16,608 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 06:41:16,609 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 06:41:16,609 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 06:41:16,609 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 06:41:16,609 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 06:41:16,609 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 06:41:16,609 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 06:41:16,609 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 06:41:16,609 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 06:41:16,610 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 06:41:16,610 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 06:41:16,610 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 06:41:16,610 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 06:41:16,610 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 06:41:16,610 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 06:41:16,610 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 06:41:16,610 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 06:41:16,610 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 06:41:16,610 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 06:41:16,610 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 06:41:16,610 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 06:41:16,611 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 06:41:16,611 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 06:41:16,611 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 06:41:16,611 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 06:41:16,611 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 06:41:16,611 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 06:41:16,611 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 06:41:16,611 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 06:41:16,611 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 06:41:16,611 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 06:41:16,611 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 06:41:16,612 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 06:41:16,612 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 06:41:16,612 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 06:41:16,612 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 06:41:16,612 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 06:41:16,612 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 06:41:16,612 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_015372eb-d1a5-4438-970b-d5529eda1c18/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 -> e3fe12f9ba7a27693660ab3b9c436489448c0880075d8a5a83d98427fc7a74d3 [2024-12-02 06:41:16,852 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 06:41:16,861 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 06:41:16,863 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 06:41:16,865 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 06:41:16,865 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 06:41:16,866 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c [2024-12-02 06:41:19,494 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/data/f5e228703/01e9bd986bde4922a2a33c05bd1aa98d/FLAG839f73446 [2024-12-02 06:41:19,721 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 06:41:19,722 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c [2024-12-02 06:41:19,728 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/data/f5e228703/01e9bd986bde4922a2a33c05bd1aa98d/FLAG839f73446 [2024-12-02 06:41:20,057 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/data/f5e228703/01e9bd986bde4922a2a33c05bd1aa98d [2024-12-02 06:41:20,059 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 06:41:20,060 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 06:41:20,060 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 06:41:20,061 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 06:41:20,063 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 06:41:20,064 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:41:20" (1/1) ... [2024-12-02 06:41:20,064 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74e88cc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:41:20, skipping insertion in model container [2024-12-02 06:41:20,065 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:41:20" (1/1) ... [2024-12-02 06:41:20,077 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 06:41:20,231 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_015372eb-d1a5-4438-970b-d5529eda1c18/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c[6899,6912] [2024-12-02 06:41:20,233 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 06:41:20,241 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 06:41:20,276 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_015372eb-d1a5-4438-970b-d5529eda1c18/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c[6899,6912] [2024-12-02 06:41:20,276 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 06:41:20,289 INFO L204 MainTranslator]: Completed translation [2024-12-02 06:41:20,289 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:41:20 WrapperNode [2024-12-02 06:41:20,290 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 06:41:20,290 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 06:41:20,290 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 06:41:20,290 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 06:41:20,295 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:41:20" (1/1) ... [2024-12-02 06:41:20,301 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:41:20" (1/1) ... [2024-12-02 06:41:20,323 INFO L138 Inliner]: procedures = 23, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 248 [2024-12-02 06:41:20,324 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 06:41:20,324 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 06:41:20,324 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 06:41:20,324 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 06:41:20,333 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:41:20" (1/1) ... [2024-12-02 06:41:20,334 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:41:20" (1/1) ... [2024-12-02 06:41:20,336 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:41:20" (1/1) ... [2024-12-02 06:41:20,349 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 06:41:20,349 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:41:20" (1/1) ... [2024-12-02 06:41:20,349 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:41:20" (1/1) ... [2024-12-02 06:41:20,354 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:41:20" (1/1) ... [2024-12-02 06:41:20,355 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:41:20" (1/1) ... [2024-12-02 06:41:20,360 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:41:20" (1/1) ... [2024-12-02 06:41:20,361 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:41:20" (1/1) ... [2024-12-02 06:41:20,362 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:41:20" (1/1) ... [2024-12-02 06:41:20,365 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 06:41:20,366 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 06:41:20,366 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 06:41:20,366 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 06:41:20,367 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:41:20" (1/1) ... [2024-12-02 06:41:20,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 06:41:20,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:41:20,393 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 06:41:20,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 06:41:20,413 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 06:41:20,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 06:41:20,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 06:41:20,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 06:41:20,480 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 06:41:20,482 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 06:41:20,778 INFO L? ?]: Removed 33 outVars from TransFormulas that were not future-live. [2024-12-02 06:41:20,778 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 06:41:20,788 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 06:41:20,788 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 06:41:20,788 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:41:20 BoogieIcfgContainer [2024-12-02 06:41:20,789 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 06:41:20,790 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 06:41:20,791 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 06:41:20,795 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 06:41:20,795 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 06:41:20" (1/3) ... [2024-12-02 06:41:20,795 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fe7632 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:41:20, skipping insertion in model container [2024-12-02 06:41:20,795 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:41:20" (2/3) ... [2024-12-02 06:41:20,795 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fe7632 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:41:20, skipping insertion in model container [2024-12-02 06:41:20,796 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:41:20" (3/3) ... [2024-12-02 06:41:20,796 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c [2024-12-02 06:41:20,810 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 06:41:20,811 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c that has 1 procedures, 69 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 06:41:20,853 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 06:41:20,863 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;@36e9a644, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 06:41:20,863 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 06:41:20,866 INFO L276 IsEmpty]: Start isEmpty. Operand has 69 states, 67 states have (on average 1.7014925373134329) internal successors, (114), 68 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:41:20,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-12-02 06:41:20,872 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:41:20,873 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] [2024-12-02 06:41:20,873 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:41:20,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:41:20,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1425545932, now seen corresponding path program 1 times [2024-12-02 06:41:20,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:41:20,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506035198] [2024-12-02 06:41:20,885 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:41:20,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:41:20,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:41:21,222 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 06:41:21,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:41:21,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506035198] [2024-12-02 06:41:21,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506035198] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:41:21,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:41:21,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 06:41:21,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135577339] [2024-12-02 06:41:21,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:41:21,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 06:41:21,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:41:21,241 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 06:41:21,242 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 06:41:21,243 INFO L87 Difference]: Start difference. First operand has 69 states, 67 states have (on average 1.7014925373134329) internal successors, (114), 68 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:41:21,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:41:21,308 INFO L93 Difference]: Finished difference Result 115 states and 189 transitions. [2024-12-02 06:41:21,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 06:41:21,310 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 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 25 [2024-12-02 06:41:21,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:41:21,317 INFO L225 Difference]: With dead ends: 115 [2024-12-02 06:41:21,317 INFO L226 Difference]: Without dead ends: 65 [2024-12-02 06:41:21,319 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 06:41:21,321 INFO L435 NwaCegarLoop]: 105 mSDtfsCounter, 0 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:41:21,322 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 398 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:41:21,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-12-02 06:41:21,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2024-12-02 06:41:21,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.40625) internal successors, (90), 64 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:41:21,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 90 transitions. [2024-12-02 06:41:21,350 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 90 transitions. Word has length 25 [2024-12-02 06:41:21,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:41:21,350 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 90 transitions. [2024-12-02 06:41:21,351 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:41:21,351 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 90 transitions. [2024-12-02 06:41:21,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-12-02 06:41:21,352 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:41:21,352 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] [2024-12-02 06:41:21,352 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 06:41:21,352 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:41:21,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:41:21,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1477219222, now seen corresponding path program 1 times [2024-12-02 06:41:21,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:41:21,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854597585] [2024-12-02 06:41:21,353 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:41:21,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:41:21,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:41:21,450 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 06:41:21,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:41:21,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854597585] [2024-12-02 06:41:21,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854597585] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:41:21,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:41:21,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:41:21,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734643114] [2024-12-02 06:41:21,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:41:21,452 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:41:21,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:41:21,453 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:41:21,453 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:41:21,453 INFO L87 Difference]: Start difference. First operand 65 states and 90 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:41:21,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:41:21,482 INFO L93 Difference]: Finished difference Result 141 states and 210 transitions. [2024-12-02 06:41:21,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:41:21,483 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2024-12-02 06:41:21,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:41:21,483 INFO L225 Difference]: With dead ends: 141 [2024-12-02 06:41:21,483 INFO L226 Difference]: Without dead ends: 99 [2024-12-02 06:41:21,484 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:41:21,485 INFO L435 NwaCegarLoop]: 119 mSDtfsCounter, 51 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:41:21,485 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 187 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:41:21,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-12-02 06:41:21,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 97. [2024-12-02 06:41:21,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 96 states have (on average 1.46875) internal successors, (141), 96 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:41:21,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 141 transitions. [2024-12-02 06:41:21,493 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 141 transitions. Word has length 41 [2024-12-02 06:41:21,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:41:21,493 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 141 transitions. [2024-12-02 06:41:21,493 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:41:21,494 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 141 transitions. [2024-12-02 06:41:21,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-12-02 06:41:21,494 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:41:21,494 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] [2024-12-02 06:41:21,495 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 06:41:21,495 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:41:21,495 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:41:21,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1000300971, now seen corresponding path program 1 times [2024-12-02 06:41:21,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:41:21,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079723688] [2024-12-02 06:41:21,495 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:41:21,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:41:21,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:41:21,619 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 06:41:21,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:41:21,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079723688] [2024-12-02 06:41:21,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079723688] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:41:21,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:41:21,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 06:41:21,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283043930] [2024-12-02 06:41:21,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:41:21,620 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 06:41:21,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:41:21,621 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 06:41:21,621 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 06:41:21,621 INFO L87 Difference]: Start difference. First operand 97 states and 141 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:41:21,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:41:21,708 INFO L93 Difference]: Finished difference Result 393 states and 613 transitions. [2024-12-02 06:41:21,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 06:41:21,708 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2024-12-02 06:41:21,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:41:21,710 INFO L225 Difference]: With dead ends: 393 [2024-12-02 06:41:21,711 INFO L226 Difference]: Without dead ends: 319 [2024-12-02 06:41:21,711 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-12-02 06:41:21,712 INFO L435 NwaCegarLoop]: 86 mSDtfsCounter, 397 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:41:21,712 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [397 Valid, 370 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:41:21,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2024-12-02 06:41:21,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 169. [2024-12-02 06:41:21,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 168 states have (on average 1.5119047619047619) internal successors, (254), 168 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:41:21,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 254 transitions. [2024-12-02 06:41:21,728 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 254 transitions. Word has length 41 [2024-12-02 06:41:21,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:41:21,728 INFO L471 AbstractCegarLoop]: Abstraction has 169 states and 254 transitions. [2024-12-02 06:41:21,729 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:41:21,729 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 254 transitions. [2024-12-02 06:41:21,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-12-02 06:41:21,730 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:41:21,730 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] [2024-12-02 06:41:21,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 06:41:21,730 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:41:21,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:41:21,731 INFO L85 PathProgramCache]: Analyzing trace with hash 561235574, now seen corresponding path program 1 times [2024-12-02 06:41:21,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:41:21,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876209635] [2024-12-02 06:41:21,731 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:41:21,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:41:21,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:41:21,957 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 06:41:21,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:41:21,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876209635] [2024-12-02 06:41:21,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876209635] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:41:21,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:41:21,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 06:41:21,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619784009] [2024-12-02 06:41:21,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:41:21,958 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 06:41:21,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:41:21,959 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 06:41:21,959 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 06:41:21,959 INFO L87 Difference]: Start difference. First operand 169 states and 254 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:41:21,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:41:21,985 INFO L93 Difference]: Finished difference Result 183 states and 271 transitions. [2024-12-02 06:41:21,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 06:41:21,985 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2024-12-02 06:41:21,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:41:21,987 INFO L225 Difference]: With dead ends: 183 [2024-12-02 06:41:21,987 INFO L226 Difference]: Without dead ends: 181 [2024-12-02 06:41:21,987 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 06:41:21,988 INFO L435 NwaCegarLoop]: 87 mSDtfsCounter, 0 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:41:21,988 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 340 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:41:21,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2024-12-02 06:41:21,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2024-12-02 06:41:21,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 180 states have (on average 1.4777777777777779) internal successors, (266), 180 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:41:21,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 266 transitions. [2024-12-02 06:41:21,999 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 266 transitions. Word has length 42 [2024-12-02 06:41:21,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:41:21,999 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 266 transitions. [2024-12-02 06:41:21,999 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:41:21,999 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 266 transitions. [2024-12-02 06:41:22,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-12-02 06:41:22,000 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:41:22,000 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] [2024-12-02 06:41:22,000 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 06:41:22,000 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:41:22,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:41:22,001 INFO L85 PathProgramCache]: Analyzing trace with hash 271012067, now seen corresponding path program 1 times [2024-12-02 06:41:22,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:41:22,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373347814] [2024-12-02 06:41:22,001 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:41:22,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:41:22,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:41:22,076 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 06:41:22,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:41:22,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373347814] [2024-12-02 06:41:22,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373347814] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:41:22,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:41:22,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:41:22,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606828263] [2024-12-02 06:41:22,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:41:22,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:41:22,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:41:22,078 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:41:22,078 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:41:22,078 INFO L87 Difference]: Start difference. First operand 181 states and 266 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:41:22,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:41:22,102 INFO L93 Difference]: Finished difference Result 467 states and 702 transitions. [2024-12-02 06:41:22,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:41:22,103 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2024-12-02 06:41:22,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:41:22,104 INFO L225 Difference]: With dead ends: 467 [2024-12-02 06:41:22,105 INFO L226 Difference]: Without dead ends: 309 [2024-12-02 06:41:22,105 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 06:41:22,106 INFO L435 NwaCegarLoop]: 87 mSDtfsCounter, 39 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:41:22,106 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 149 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:41:22,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2024-12-02 06:41:22,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 303. [2024-12-02 06:41:22,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 302 states have (on average 1.4768211920529801) internal successors, (446), 302 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:41:22,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 446 transitions. [2024-12-02 06:41:22,122 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 446 transitions. Word has length 43 [2024-12-02 06:41:22,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:41:22,122 INFO L471 AbstractCegarLoop]: Abstraction has 303 states and 446 transitions. [2024-12-02 06:41:22,122 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:41:22,123 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 446 transitions. [2024-12-02 06:41:22,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-12-02 06:41:22,124 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:41:22,124 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] [2024-12-02 06:41:22,124 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 06:41:22,124 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:41:22,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:41:22,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1222671217, now seen corresponding path program 1 times [2024-12-02 06:41:22,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:41:22,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265086746] [2024-12-02 06:41:22,125 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:41:22,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:41:22,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:41:22,191 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 06:41:22,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:41:22,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265086746] [2024-12-02 06:41:22,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265086746] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:41:22,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:41:22,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:41:22,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173586256] [2024-12-02 06:41:22,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:41:22,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:41:22,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:41:22,193 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:41:22,193 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:41:22,193 INFO L87 Difference]: Start difference. First operand 303 states and 446 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:41:22,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:41:22,227 INFO L93 Difference]: Finished difference Result 799 states and 1180 transitions. [2024-12-02 06:41:22,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:41:22,227 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2024-12-02 06:41:22,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:41:22,229 INFO L225 Difference]: With dead ends: 799 [2024-12-02 06:41:22,229 INFO L226 Difference]: Without dead ends: 519 [2024-12-02 06:41:22,230 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 06:41:22,231 INFO L435 NwaCegarLoop]: 113 mSDtfsCounter, 47 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:41:22,231 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 185 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:41:22,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2024-12-02 06:41:22,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 517. [2024-12-02 06:41:22,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 517 states, 516 states have (on average 1.449612403100775) internal successors, (748), 516 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:41:22,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 748 transitions. [2024-12-02 06:41:22,252 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 748 transitions. Word has length 44 [2024-12-02 06:41:22,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:41:22,252 INFO L471 AbstractCegarLoop]: Abstraction has 517 states and 748 transitions. [2024-12-02 06:41:22,252 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:41:22,252 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 748 transitions. [2024-12-02 06:41:22,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-12-02 06:41:22,253 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:41:22,253 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 06:41:22,253 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 06:41:22,253 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:41:22,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:41:22,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1273029565, now seen corresponding path program 1 times [2024-12-02 06:41:22,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:41:22,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468186172] [2024-12-02 06:41:22,254 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:41:22,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:41:22,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:41:22,304 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 06:41:22,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:41:22,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468186172] [2024-12-02 06:41:22,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468186172] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:41:22,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:41:22,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:41:22,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107658131] [2024-12-02 06:41:22,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:41:22,305 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:41:22,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:41:22,305 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:41:22,305 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:41:22,306 INFO L87 Difference]: Start difference. First operand 517 states and 748 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 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 06:41:22,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:41:22,337 INFO L93 Difference]: Finished difference Result 1004 states and 1466 transitions. [2024-12-02 06:41:22,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:41:22,337 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 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 06:41:22,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:41:22,340 INFO L225 Difference]: With dead ends: 1004 [2024-12-02 06:41:22,340 INFO L226 Difference]: Without dead ends: 721 [2024-12-02 06:41:22,341 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 06:41:22,341 INFO L435 NwaCegarLoop]: 133 mSDtfsCounter, 52 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:41:22,342 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 197 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:41:22,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2024-12-02 06:41:22,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 719. [2024-12-02 06:41:22,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 719 states, 718 states have (on average 1.434540389972145) internal successors, (1030), 718 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:41:22,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 719 states to 719 states and 1030 transitions. [2024-12-02 06:41:22,369 INFO L78 Accepts]: Start accepts. Automaton has 719 states and 1030 transitions. Word has length 45 [2024-12-02 06:41:22,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:41:22,370 INFO L471 AbstractCegarLoop]: Abstraction has 719 states and 1030 transitions. [2024-12-02 06:41:22,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 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 06:41:22,370 INFO L276 IsEmpty]: Start isEmpty. Operand 719 states and 1030 transitions. [2024-12-02 06:41:22,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-12-02 06:41:22,371 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:41:22,371 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:41:22,371 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 06:41:22,372 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:41:22,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:41:22,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1258504631, now seen corresponding path program 1 times [2024-12-02 06:41:22,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:41:22,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588596082] [2024-12-02 06:41:22,372 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:41:22,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:41:22,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:41:22,501 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 06:41:22,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:41:22,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588596082] [2024-12-02 06:41:22,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588596082] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:41:22,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:41:22,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 06:41:22,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541081145] [2024-12-02 06:41:22,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:41:22,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 06:41:22,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:41:22,503 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 06:41:22,503 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 06:41:22,503 INFO L87 Difference]: Start difference. First operand 719 states and 1030 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:41:22,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:41:22,593 INFO L93 Difference]: Finished difference Result 1659 states and 2418 transitions. [2024-12-02 06:41:22,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 06:41:22,593 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 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 63 [2024-12-02 06:41:22,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:41:22,598 INFO L225 Difference]: With dead ends: 1659 [2024-12-02 06:41:22,598 INFO L226 Difference]: Without dead ends: 1305 [2024-12-02 06:41:22,599 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-12-02 06:41:22,600 INFO L435 NwaCegarLoop]: 152 mSDtfsCounter, 236 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:41:22,600 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 392 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:41:22,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1305 states. [2024-12-02 06:41:22,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1305 to 1059. [2024-12-02 06:41:22,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1059 states, 1058 states have (on average 1.438563327032136) internal successors, (1522), 1058 states have internal predecessors, (1522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:41:22,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1059 states to 1059 states and 1522 transitions. [2024-12-02 06:41:22,647 INFO L78 Accepts]: Start accepts. Automaton has 1059 states and 1522 transitions. Word has length 63 [2024-12-02 06:41:22,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:41:22,647 INFO L471 AbstractCegarLoop]: Abstraction has 1059 states and 1522 transitions. [2024-12-02 06:41:22,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:41:22,648 INFO L276 IsEmpty]: Start isEmpty. Operand 1059 states and 1522 transitions. [2024-12-02 06:41:22,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-12-02 06:41:22,649 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:41:22,649 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:41:22,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 06:41:22,649 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:41:22,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:41:22,649 INFO L85 PathProgramCache]: Analyzing trace with hash -26861640, now seen corresponding path program 1 times [2024-12-02 06:41:22,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:41:22,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472512486] [2024-12-02 06:41:22,650 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:41:22,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:41:22,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:41:22,761 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-02 06:41:22,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:41:22,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472512486] [2024-12-02 06:41:22,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472512486] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:41:22,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:41:22,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 06:41:22,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450807761] [2024-12-02 06:41:22,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:41:22,762 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 06:41:22,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:41:22,762 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 06:41:22,762 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 06:41:22,763 INFO L87 Difference]: Start difference. First operand 1059 states and 1522 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:41:22,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:41:22,859 INFO L93 Difference]: Finished difference Result 1999 states and 2910 transitions. [2024-12-02 06:41:22,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 06:41:22,859 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 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 63 [2024-12-02 06:41:22,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:41:22,865 INFO L225 Difference]: With dead ends: 1999 [2024-12-02 06:41:22,866 INFO L226 Difference]: Without dead ends: 1645 [2024-12-02 06:41:22,866 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-12-02 06:41:22,867 INFO L435 NwaCegarLoop]: 151 mSDtfsCounter, 241 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:41:22,867 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 381 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:41:22,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1645 states. [2024-12-02 06:41:22,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1645 to 1399. [2024-12-02 06:41:22,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1399 states, 1398 states have (on average 1.4406294706723892) internal successors, (2014), 1398 states have internal predecessors, (2014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:41:22,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1399 states to 1399 states and 2014 transitions. [2024-12-02 06:41:22,934 INFO L78 Accepts]: Start accepts. Automaton has 1399 states and 2014 transitions. Word has length 63 [2024-12-02 06:41:22,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:41:22,934 INFO L471 AbstractCegarLoop]: Abstraction has 1399 states and 2014 transitions. [2024-12-02 06:41:22,934 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:41:22,934 INFO L276 IsEmpty]: Start isEmpty. Operand 1399 states and 2014 transitions. [2024-12-02 06:41:22,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-12-02 06:41:22,935 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:41:22,935 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:41:22,936 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 06:41:22,936 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:41:22,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:41:22,936 INFO L85 PathProgramCache]: Analyzing trace with hash -618172044, now seen corresponding path program 1 times [2024-12-02 06:41:22,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:41:22,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507268638] [2024-12-02 06:41:22,936 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:41:22,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:41:22,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:41:23,056 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:41:23,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:41:23,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507268638] [2024-12-02 06:41:23,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507268638] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:41:23,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:41:23,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:41:23,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381145342] [2024-12-02 06:41:23,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:41:23,058 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:41:23,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:41:23,058 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:41:23,058 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:41:23,058 INFO L87 Difference]: Start difference. First operand 1399 states and 2014 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:41:23,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:41:23,110 INFO L93 Difference]: Finished difference Result 2775 states and 4004 transitions. [2024-12-02 06:41:23,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:41:23,110 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2024-12-02 06:41:23,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:41:23,116 INFO L225 Difference]: With dead ends: 2775 [2024-12-02 06:41:23,116 INFO L226 Difference]: Without dead ends: 1401 [2024-12-02 06:41:23,118 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 06:41:23,118 INFO L435 NwaCegarLoop]: 110 mSDtfsCounter, 42 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:41:23,119 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 185 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:41:23,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1401 states. [2024-12-02 06:41:23,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1401 to 1399. [2024-12-02 06:41:23,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1399 states, 1398 states have (on average 1.4234620886981402) internal successors, (1990), 1398 states have internal predecessors, (1990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:41:23,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1399 states to 1399 states and 1990 transitions. [2024-12-02 06:41:23,185 INFO L78 Accepts]: Start accepts. Automaton has 1399 states and 1990 transitions. Word has length 64 [2024-12-02 06:41:23,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:41:23,185 INFO L471 AbstractCegarLoop]: Abstraction has 1399 states and 1990 transitions. [2024-12-02 06:41:23,185 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:41:23,185 INFO L276 IsEmpty]: Start isEmpty. Operand 1399 states and 1990 transitions. [2024-12-02 06:41:23,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-12-02 06:41:23,186 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:41:23,186 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:41:23,186 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 06:41:23,187 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:41:23,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:41:23,187 INFO L85 PathProgramCache]: Analyzing trace with hash -231923725, now seen corresponding path program 1 times [2024-12-02 06:41:23,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:41:23,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410357770] [2024-12-02 06:41:23,187 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:41:23,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:41:23,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:41:23,735 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:41:23,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:41:23,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410357770] [2024-12-02 06:41:23,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410357770] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:41:23,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23414555] [2024-12-02 06:41:23,736 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:41:23,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:41:23,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:41:23,738 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:41:23,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 06:41:23,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:41:23,855 INFO L256 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-12-02 06:41:23,861 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:41:24,581 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:41:24,581 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:41:25,189 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:41:25,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [23414555] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:41:25,190 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:41:25,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 14, 11] total 31 [2024-12-02 06:41:25,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470452928] [2024-12-02 06:41:25,190 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:41:25,191 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-12-02 06:41:25,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:41:25,191 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-12-02 06:41:25,192 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=740, Unknown=0, NotChecked=0, Total=930 [2024-12-02 06:41:25,192 INFO L87 Difference]: Start difference. First operand 1399 states and 1990 transitions. Second operand has 31 states, 31 states have (on average 5.838709677419355) internal successors, (181), 31 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:41:31,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:41:31,653 INFO L93 Difference]: Finished difference Result 13165 states and 18494 transitions. [2024-12-02 06:41:31,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2024-12-02 06:41:31,654 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.838709677419355) internal successors, (181), 31 states have internal predecessors, (181), 0 states have call successors, (0), 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 64 [2024-12-02 06:41:31,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:41:31,681 INFO L225 Difference]: With dead ends: 13165 [2024-12-02 06:41:31,681 INFO L226 Difference]: Without dead ends: 11791 [2024-12-02 06:41:31,686 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6661 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=3548, Invalid=14542, Unknown=0, NotChecked=0, Total=18090 [2024-12-02 06:41:31,687 INFO L435 NwaCegarLoop]: 99 mSDtfsCounter, 4527 mSDsluCounter, 1499 mSDsCounter, 0 mSdLazyCounter, 1934 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4527 SdHoareTripleChecker+Valid, 1598 SdHoareTripleChecker+Invalid, 2054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 1934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-12-02 06:41:31,687 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4527 Valid, 1598 Invalid, 2054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 1934 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-12-02 06:41:31,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11791 states. [2024-12-02 06:41:31,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11791 to 8925. [2024-12-02 06:41:31,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8925 states, 8924 states have (on average 1.382787987449574) internal successors, (12340), 8924 states have internal predecessors, (12340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:41:31,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8925 states to 8925 states and 12340 transitions. [2024-12-02 06:41:31,937 INFO L78 Accepts]: Start accepts. Automaton has 8925 states and 12340 transitions. Word has length 64 [2024-12-02 06:41:31,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:41:31,937 INFO L471 AbstractCegarLoop]: Abstraction has 8925 states and 12340 transitions. [2024-12-02 06:41:31,937 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.838709677419355) internal successors, (181), 31 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:41:31,937 INFO L276 IsEmpty]: Start isEmpty. Operand 8925 states and 12340 transitions. [2024-12-02 06:41:31,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-12-02 06:41:31,938 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:41:31,938 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:41:31,947 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 06:41:32,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-12-02 06:41:32,140 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:41:32,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:41:32,141 INFO L85 PathProgramCache]: Analyzing trace with hash -812650598, now seen corresponding path program 1 times [2024-12-02 06:41:32,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:41:32,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708779518] [2024-12-02 06:41:32,141 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:41:32,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:41:32,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:41:32,263 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 06:41:32,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:41:32,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708779518] [2024-12-02 06:41:32,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708779518] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:41:32,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:41:32,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 06:41:32,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946976044] [2024-12-02 06:41:32,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:41:32,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 06:41:32,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:41:32,265 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 06:41:32,265 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 06:41:32,265 INFO L87 Difference]: Start difference. First operand 8925 states and 12340 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:41:32,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:41:32,593 INFO L93 Difference]: Finished difference Result 15784 states and 22029 transitions. [2024-12-02 06:41:32,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 06:41:32,594 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 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 65 [2024-12-02 06:41:32,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:41:32,615 INFO L225 Difference]: With dead ends: 15784 [2024-12-02 06:41:32,615 INFO L226 Difference]: Without dead ends: 13452 [2024-12-02 06:41:32,619 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-12-02 06:41:32,620 INFO L435 NwaCegarLoop]: 157 mSDtfsCounter, 229 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:41:32,620 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 419 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:41:32,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13452 states. [2024-12-02 06:41:32,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13452 to 11127. [2024-12-02 06:41:32,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11127 states, 11126 states have (on average 1.3807298220384685) internal successors, (15362), 11126 states have internal predecessors, (15362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:41:32,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11127 states to 11127 states and 15362 transitions. [2024-12-02 06:41:32,969 INFO L78 Accepts]: Start accepts. Automaton has 11127 states and 15362 transitions. Word has length 65 [2024-12-02 06:41:32,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:41:32,969 INFO L471 AbstractCegarLoop]: Abstraction has 11127 states and 15362 transitions. [2024-12-02 06:41:32,970 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:41:32,970 INFO L276 IsEmpty]: Start isEmpty. Operand 11127 states and 15362 transitions. [2024-12-02 06:41:32,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-12-02 06:41:32,971 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:41:32,971 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:41:32,971 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-02 06:41:32,971 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:41:32,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:41:32,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1441709853, now seen corresponding path program 1 times [2024-12-02 06:41:32,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:41:32,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759776796] [2024-12-02 06:41:32,972 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:41:32,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:41:32,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:41:33,273 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:41:33,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:41:33,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759776796] [2024-12-02 06:41:33,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759776796] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:41:33,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1016846762] [2024-12-02 06:41:33,274 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:41:33,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:41:33,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:41:33,276 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:41:33,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 06:41:33,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:41:33,377 INFO L256 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-12-02 06:41:33,379 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:41:34,750 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:41:34,750 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:41:35,982 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:41:35,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1016846762] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:41:35,982 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:41:35,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 14, 12] total 31 [2024-12-02 06:41:35,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440693733] [2024-12-02 06:41:35,983 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:41:35,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-12-02 06:41:35,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:41:35,983 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-12-02 06:41:35,984 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=755, Unknown=0, NotChecked=0, Total=930 [2024-12-02 06:41:35,984 INFO L87 Difference]: Start difference. First operand 11127 states and 15362 transitions. Second operand has 31 states, 31 states have (on average 6.0) internal successors, (186), 31 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:41:40,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:41:40,957 INFO L93 Difference]: Finished difference Result 114075 states and 158349 transitions. [2024-12-02 06:41:40,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2024-12-02 06:41:40,958 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 6.0) internal successors, (186), 31 states have internal predecessors, (186), 0 states have call successors, (0), 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 68 [2024-12-02 06:41:40,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:41:41,161 INFO L225 Difference]: With dead ends: 114075 [2024-12-02 06:41:41,161 INFO L226 Difference]: Without dead ends: 102980 [2024-12-02 06:41:41,177 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5419 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=3003, Invalid=12249, Unknown=0, NotChecked=0, Total=15252 [2024-12-02 06:41:41,178 INFO L435 NwaCegarLoop]: 95 mSDtfsCounter, 3631 mSDsluCounter, 1380 mSDsCounter, 0 mSdLazyCounter, 1350 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3631 SdHoareTripleChecker+Valid, 1475 SdHoareTripleChecker+Invalid, 1503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 1350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:41:41,178 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3631 Valid, 1475 Invalid, 1503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 1350 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-12-02 06:41:41,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102980 states. [2024-12-02 06:41:42,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102980 to 40935. [2024-12-02 06:41:42,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40935 states, 40934 states have (on average 1.3767528216152831) internal successors, (56356), 40934 states have internal predecessors, (56356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:41:42,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40935 states to 40935 states and 56356 transitions. [2024-12-02 06:41:42,600 INFO L78 Accepts]: Start accepts. Automaton has 40935 states and 56356 transitions. Word has length 68 [2024-12-02 06:41:42,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:41:42,600 INFO L471 AbstractCegarLoop]: Abstraction has 40935 states and 56356 transitions. [2024-12-02 06:41:42,600 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 6.0) internal successors, (186), 31 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:41:42,600 INFO L276 IsEmpty]: Start isEmpty. Operand 40935 states and 56356 transitions. [2024-12-02 06:41:42,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-12-02 06:41:42,602 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:41:42,602 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:41:42,610 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 06:41:42,802 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-12-02 06:41:42,802 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:41:42,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:41:42,803 INFO L85 PathProgramCache]: Analyzing trace with hash -737912097, now seen corresponding path program 1 times [2024-12-02 06:41:42,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:41:42,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379224831] [2024-12-02 06:41:42,803 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:41:42,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:41:42,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:41:43,395 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:41:43,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:41:43,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379224831] [2024-12-02 06:41:43,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379224831] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:41:43,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1122119956] [2024-12-02 06:41:43,396 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:41:43,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:41:43,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:41:43,398 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:41:43,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 06:41:43,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:41:43,505 INFO L256 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-12-02 06:41:43,508 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:41:43,837 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:41:43,837 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:41:44,357 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:41:44,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1122119956] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:41:44,357 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:41:44,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2024-12-02 06:41:44,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61219480] [2024-12-02 06:41:44,357 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:41:44,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-12-02 06:41:44,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:41:44,358 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-12-02 06:41:44,358 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2024-12-02 06:41:44,358 INFO L87 Difference]: Start difference. First operand 40935 states and 56356 transitions. Second operand has 21 states, 21 states have (on average 6.857142857142857) internal successors, (144), 20 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:41:46,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:41:46,710 INFO L93 Difference]: Finished difference Result 173641 states and 241883 transitions. [2024-12-02 06:41:46,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-12-02 06:41:46,710 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 6.857142857142857) internal successors, (144), 20 states have internal predecessors, (144), 0 states have call successors, (0), 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 68 [2024-12-02 06:41:46,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:41:46,849 INFO L225 Difference]: With dead ends: 173641 [2024-12-02 06:41:46,849 INFO L226 Difference]: Without dead ends: 133274 [2024-12-02 06:41:46,879 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=323, Invalid=937, Unknown=0, NotChecked=0, Total=1260 [2024-12-02 06:41:46,879 INFO L435 NwaCegarLoop]: 117 mSDtfsCounter, 1543 mSDsluCounter, 642 mSDsCounter, 0 mSdLazyCounter, 618 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1543 SdHoareTripleChecker+Valid, 759 SdHoareTripleChecker+Invalid, 639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 06:41:46,880 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1543 Valid, 759 Invalid, 639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 618 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 06:41:46,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133274 states. [2024-12-02 06:41:49,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133274 to 90687. [2024-12-02 06:41:49,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90687 states, 90686 states have (on average 1.3757801645237413) internal successors, (124764), 90686 states have internal predecessors, (124764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:41:49,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90687 states to 90687 states and 124764 transitions. [2024-12-02 06:41:49,577 INFO L78 Accepts]: Start accepts. Automaton has 90687 states and 124764 transitions. Word has length 68 [2024-12-02 06:41:49,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:41:49,578 INFO L471 AbstractCegarLoop]: Abstraction has 90687 states and 124764 transitions. [2024-12-02 06:41:49,578 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 6.857142857142857) internal successors, (144), 20 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:41:49,578 INFO L276 IsEmpty]: Start isEmpty. Operand 90687 states and 124764 transitions. [2024-12-02 06:41:49,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-12-02 06:41:49,580 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:41:49,580 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:41:49,585 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 06:41:49,780 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-12-02 06:41:49,780 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:41:49,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:41:49,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1946824194, now seen corresponding path program 1 times [2024-12-02 06:41:49,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:41:49,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297217142] [2024-12-02 06:41:49,781 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:41:49,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:41:49,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:41:49,855 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:41:49,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:41:49,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297217142] [2024-12-02 06:41:49,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297217142] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:41:49,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:41:49,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:41:49,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593779287] [2024-12-02 06:41:49,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:41:49,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:41:49,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:41:49,856 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:41:49,856 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:41:49,856 INFO L87 Difference]: Start difference. First operand 90687 states and 124764 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:41:50,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:41:50,901 INFO L93 Difference]: Finished difference Result 136251 states and 187456 transitions. [2024-12-02 06:41:50,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:41:50,901 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2024-12-02 06:41:50,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:41:50,942 INFO L225 Difference]: With dead ends: 136251 [2024-12-02 06:41:50,942 INFO L226 Difference]: Without dead ends: 46265 [2024-12-02 06:41:50,977 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 06:41:50,978 INFO L435 NwaCegarLoop]: 103 mSDtfsCounter, 29 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:41:50,978 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 172 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:41:50,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46265 states. [2024-12-02 06:41:51,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46265 to 45063. [2024-12-02 06:41:52,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45063 states, 45062 states have (on average 1.3489858417291731) internal successors, (60788), 45062 states have internal predecessors, (60788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:41:52,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45063 states to 45063 states and 60788 transitions. [2024-12-02 06:41:52,065 INFO L78 Accepts]: Start accepts. Automaton has 45063 states and 60788 transitions. Word has length 68 [2024-12-02 06:41:52,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:41:52,065 INFO L471 AbstractCegarLoop]: Abstraction has 45063 states and 60788 transitions. [2024-12-02 06:41:52,065 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:41:52,065 INFO L276 IsEmpty]: Start isEmpty. Operand 45063 states and 60788 transitions. [2024-12-02 06:41:52,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-12-02 06:41:52,066 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:41:52,066 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:41:52,066 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-12-02 06:41:52,066 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:41:52,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:41:52,066 INFO L85 PathProgramCache]: Analyzing trace with hash -316968284, now seen corresponding path program 1 times [2024-12-02 06:41:52,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:41:52,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764499959] [2024-12-02 06:41:52,067 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:41:52,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:41:52,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:41:52,096 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:41:52,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:41:52,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764499959] [2024-12-02 06:41:52,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764499959] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:41:52,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:41:52,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:41:52,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362538080] [2024-12-02 06:41:52,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:41:52,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:41:52,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:41:52,097 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:41:52,097 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:41:52,097 INFO L87 Difference]: Start difference. First operand 45063 states and 60788 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:41:53,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:41:53,248 INFO L93 Difference]: Finished difference Result 91942 states and 123604 transitions. [2024-12-02 06:41:53,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:41:53,249 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2024-12-02 06:41:53,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:41:53,297 INFO L225 Difference]: With dead ends: 91942 [2024-12-02 06:41:53,297 INFO L226 Difference]: Without dead ends: 47241 [2024-12-02 06:41:53,317 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 06:41:53,318 INFO L435 NwaCegarLoop]: 133 mSDtfsCounter, 34 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:41:53,318 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 214 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:41:53,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47241 states. [2024-12-02 06:41:54,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47241 to 42680. [2024-12-02 06:41:54,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42680 states, 42679 states have (on average 1.3225473886454697) internal successors, (56445), 42679 states have internal predecessors, (56445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:41:54,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42680 states to 42680 states and 56445 transitions. [2024-12-02 06:41:54,901 INFO L78 Accepts]: Start accepts. Automaton has 42680 states and 56445 transitions. Word has length 69 [2024-12-02 06:41:54,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:41:54,902 INFO L471 AbstractCegarLoop]: Abstraction has 42680 states and 56445 transitions. [2024-12-02 06:41:54,902 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:41:54,902 INFO L276 IsEmpty]: Start isEmpty. Operand 42680 states and 56445 transitions. [2024-12-02 06:41:54,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-12-02 06:41:54,903 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:41:54,903 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:41:54,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-12-02 06:41:54,903 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:41:54,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:41:54,904 INFO L85 PathProgramCache]: Analyzing trace with hash 524526898, now seen corresponding path program 1 times [2024-12-02 06:41:54,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:41:54,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158296402] [2024-12-02 06:41:54,904 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:41:54,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:41:54,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:41:54,957 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:41:54,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:41:54,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158296402] [2024-12-02 06:41:54,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158296402] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:41:54,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:41:54,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:41:54,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703050492] [2024-12-02 06:41:54,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:41:54,958 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:41:54,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:41:54,958 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:41:54,958 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:41:54,959 INFO L87 Difference]: Start difference. First operand 42680 states and 56445 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:41:56,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:41:56,455 INFO L93 Difference]: Finished difference Result 111632 states and 146918 transitions. [2024-12-02 06:41:56,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:41:56,456 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2024-12-02 06:41:56,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:41:56,618 INFO L225 Difference]: With dead ends: 111632 [2024-12-02 06:41:56,619 INFO L226 Difference]: Without dead ends: 69642 [2024-12-02 06:41:56,638 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 06:41:56,638 INFO L435 NwaCegarLoop]: 92 mSDtfsCounter, 41 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:41:56,639 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 171 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:41:56,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69642 states. [2024-12-02 06:41:58,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69642 to 69640. [2024-12-02 06:41:58,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69640 states, 69639 states have (on average 1.292609026551214) internal successors, (90016), 69639 states have internal predecessors, (90016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:41:58,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69640 states to 69640 states and 90016 transitions. [2024-12-02 06:41:58,335 INFO L78 Accepts]: Start accepts. Automaton has 69640 states and 90016 transitions. Word has length 69 [2024-12-02 06:41:58,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:41:58,335 INFO L471 AbstractCegarLoop]: Abstraction has 69640 states and 90016 transitions. [2024-12-02 06:41:58,335 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:41:58,335 INFO L276 IsEmpty]: Start isEmpty. Operand 69640 states and 90016 transitions. [2024-12-02 06:41:58,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-12-02 06:41:58,337 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:41:58,337 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:41:58,337 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-12-02 06:41:58,337 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:41:58,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:41:58,338 INFO L85 PathProgramCache]: Analyzing trace with hash 1554454534, now seen corresponding path program 1 times [2024-12-02 06:41:58,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:41:58,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950665810] [2024-12-02 06:41:58,338 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:41:58,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:41:58,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:41:58,367 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:41:58,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:41:58,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950665810] [2024-12-02 06:41:58,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950665810] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:41:58,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:41:58,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:41:58,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610050542] [2024-12-02 06:41:58,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:41:58,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:41:58,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:41:58,368 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:41:58,368 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:41:58,369 INFO L87 Difference]: Start difference. First operand 69640 states and 90016 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:41:59,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:41:59,556 INFO L93 Difference]: Finished difference Result 82296 states and 106141 transitions. [2024-12-02 06:41:59,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:41:59,557 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2024-12-02 06:41:59,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:41:59,621 INFO L225 Difference]: With dead ends: 82296 [2024-12-02 06:41:59,621 INFO L226 Difference]: Without dead ends: 49835 [2024-12-02 06:41:59,638 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 06:41:59,638 INFO L435 NwaCegarLoop]: 100 mSDtfsCounter, 38 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:41:59,639 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 179 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:41:59,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49835 states. [2024-12-02 06:42:01,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49835 to 49833. [2024-12-02 06:42:01,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49833 states, 49832 states have (on average 1.276489003050249) internal successors, (63610), 49832 states have internal predecessors, (63610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:42:01,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49833 states to 49833 states and 63610 transitions. [2024-12-02 06:42:01,598 INFO L78 Accepts]: Start accepts. Automaton has 49833 states and 63610 transitions. Word has length 69 [2024-12-02 06:42:01,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:42:01,599 INFO L471 AbstractCegarLoop]: Abstraction has 49833 states and 63610 transitions. [2024-12-02 06:42:01,599 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:42:01,599 INFO L276 IsEmpty]: Start isEmpty. Operand 49833 states and 63610 transitions. [2024-12-02 06:42:01,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-12-02 06:42:01,600 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:42:01,600 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:42:01,600 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-12-02 06:42:01,600 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:42:01,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:42:01,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1061524558, now seen corresponding path program 1 times [2024-12-02 06:42:01,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:42:01,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131664280] [2024-12-02 06:42:01,601 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:42:01,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:42:01,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:42:01,635 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:42:01,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:42:01,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131664280] [2024-12-02 06:42:01,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131664280] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:42:01,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:42:01,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:42:01,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852940034] [2024-12-02 06:42:01,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:42:01,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:42:01,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:42:01,636 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:42:01,636 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:42:01,636 INFO L87 Difference]: Start difference. First operand 49833 states and 63610 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:42:02,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:42:02,985 INFO L93 Difference]: Finished difference Result 118274 states and 149978 transitions. [2024-12-02 06:42:02,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:42:02,985 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2024-12-02 06:42:02,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:42:03,037 INFO L225 Difference]: With dead ends: 118274 [2024-12-02 06:42:03,037 INFO L226 Difference]: Without dead ends: 69511 [2024-12-02 06:42:03,056 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 06:42:03,056 INFO L435 NwaCegarLoop]: 117 mSDtfsCounter, 35 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:42:03,056 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 196 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:42:03,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69511 states. [2024-12-02 06:42:04,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69511 to 69509. [2024-12-02 06:42:04,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69509 states, 69508 states have (on average 1.237483455141854) internal successors, (86015), 69508 states have internal predecessors, (86015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:42:04,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69509 states to 69509 states and 86015 transitions. [2024-12-02 06:42:04,660 INFO L78 Accepts]: Start accepts. Automaton has 69509 states and 86015 transitions. Word has length 69 [2024-12-02 06:42:04,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:42:04,660 INFO L471 AbstractCegarLoop]: Abstraction has 69509 states and 86015 transitions. [2024-12-02 06:42:04,661 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:42:04,661 INFO L276 IsEmpty]: Start isEmpty. Operand 69509 states and 86015 transitions. [2024-12-02 06:42:04,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-12-02 06:42:04,662 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:42:04,662 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:42:04,662 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-12-02 06:42:04,663 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:42:04,663 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:42:04,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1094010052, now seen corresponding path program 1 times [2024-12-02 06:42:04,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:42:04,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570595113] [2024-12-02 06:42:04,663 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:42:04,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:42:04,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:42:04,704 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:42:04,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:42:04,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570595113] [2024-12-02 06:42:04,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570595113] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:42:04,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:42:04,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:42:04,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862461759] [2024-12-02 06:42:04,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:42:04,705 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:42:04,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:42:04,705 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:42:04,705 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:42:04,705 INFO L87 Difference]: Start difference. First operand 69509 states and 86015 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:42:06,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:42:06,568 INFO L93 Difference]: Finished difference Result 113364 states and 140061 transitions. [2024-12-02 06:42:06,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:42:06,569 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2024-12-02 06:42:06,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:42:06,630 INFO L225 Difference]: With dead ends: 113364 [2024-12-02 06:42:06,630 INFO L226 Difference]: Without dead ends: 68938 [2024-12-02 06:42:06,656 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 06:42:06,656 INFO L435 NwaCegarLoop]: 133 mSDtfsCounter, 35 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:42:06,656 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 214 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:42:06,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68938 states. [2024-12-02 06:42:08,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68938 to 64973. [2024-12-02 06:42:08,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64973 states, 64972 states have (on average 1.2265591331650558) internal successors, (79692), 64972 states have internal predecessors, (79692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:42:08,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64973 states to 64973 states and 79692 transitions. [2024-12-02 06:42:08,309 INFO L78 Accepts]: Start accepts. Automaton has 64973 states and 79692 transitions. Word has length 69 [2024-12-02 06:42:08,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:42:08,310 INFO L471 AbstractCegarLoop]: Abstraction has 64973 states and 79692 transitions. [2024-12-02 06:42:08,310 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:42:08,310 INFO L276 IsEmpty]: Start isEmpty. Operand 64973 states and 79692 transitions. [2024-12-02 06:42:08,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-12-02 06:42:08,312 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:42:08,312 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:42:08,312 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-12-02 06:42:08,313 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:42:08,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:42:08,313 INFO L85 PathProgramCache]: Analyzing trace with hash -275378682, now seen corresponding path program 1 times [2024-12-02 06:42:08,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:42:08,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723989589] [2024-12-02 06:42:08,313 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:42:08,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:42:08,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:42:08,341 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:42:08,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:42:08,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723989589] [2024-12-02 06:42:08,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723989589] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:42:08,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:42:08,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:42:08,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686323630] [2024-12-02 06:42:08,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:42:08,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:42:08,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:42:08,342 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:42:08,342 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:42:08,342 INFO L87 Difference]: Start difference. First operand 64973 states and 79692 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:42:09,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:42:09,449 INFO L93 Difference]: Finished difference Result 100531 states and 122698 transitions. [2024-12-02 06:42:09,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:42:09,449 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2024-12-02 06:42:09,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:42:09,502 INFO L225 Difference]: With dead ends: 100531 [2024-12-02 06:42:09,502 INFO L226 Difference]: Without dead ends: 62817 [2024-12-02 06:42:09,523 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 06:42:09,524 INFO L435 NwaCegarLoop]: 136 mSDtfsCounter, 38 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:42:09,524 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 217 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:42:09,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62817 states. [2024-12-02 06:42:10,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62817 to 62565. [2024-12-02 06:42:10,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62565 states, 62564 states have (on average 1.2063486989322934) internal successors, (75474), 62564 states have internal predecessors, (75474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:42:11,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62565 states to 62565 states and 75474 transitions. [2024-12-02 06:42:11,047 INFO L78 Accepts]: Start accepts. Automaton has 62565 states and 75474 transitions. Word has length 69 [2024-12-02 06:42:11,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:42:11,047 INFO L471 AbstractCegarLoop]: Abstraction has 62565 states and 75474 transitions. [2024-12-02 06:42:11,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:42:11,047 INFO L276 IsEmpty]: Start isEmpty. Operand 62565 states and 75474 transitions. [2024-12-02 06:42:11,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-12-02 06:42:11,048 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:42:11,048 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:42:11,048 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-12-02 06:42:11,048 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:42:11,049 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:42:11,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1424960161, now seen corresponding path program 1 times [2024-12-02 06:42:11,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:42:11,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167901303] [2024-12-02 06:42:11,049 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:42:11,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:42:11,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:42:11,118 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:42:11,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:42:11,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167901303] [2024-12-02 06:42:11,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167901303] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:42:11,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592358544] [2024-12-02 06:42:11,118 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:42:11,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:42:11,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:42:11,120 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:42:11,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 06:42:11,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:42:11,221 INFO L256 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 06:42:11,223 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:42:11,391 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:42:11,391 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:42:11,474 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:42:11,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1592358544] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:42:11,474 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:42:11,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-12-02 06:42:11,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323467452] [2024-12-02 06:42:11,474 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:42:11,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 06:42:11,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:42:11,475 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 06:42:11,475 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-12-02 06:42:11,475 INFO L87 Difference]: Start difference. First operand 62565 states and 75474 transitions. Second operand has 11 states, 11 states have (on average 11.0) internal successors, (121), 10 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:42:12,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:42:12,813 INFO L93 Difference]: Finished difference Result 73636 states and 88907 transitions. [2024-12-02 06:42:12,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 06:42:12,814 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.0) internal successors, (121), 10 states have internal predecessors, (121), 0 states have call successors, (0), 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 70 [2024-12-02 06:42:12,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:42:12,863 INFO L225 Difference]: With dead ends: 73636 [2024-12-02 06:42:12,863 INFO L226 Difference]: Without dead ends: 65400 [2024-12-02 06:42:12,873 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 130 SyntacticMatches, 5 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-12-02 06:42:12,875 INFO L435 NwaCegarLoop]: 84 mSDtfsCounter, 227 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 06:42:12,875 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 351 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 06:42:12,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65400 states. [2024-12-02 06:42:14,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65400 to 64418. [2024-12-02 06:42:14,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64418 states, 64417 states have (on average 1.2014996041417638) internal successors, (77397), 64417 states have internal predecessors, (77397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:42:14,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64418 states to 64418 states and 77397 transitions. [2024-12-02 06:42:14,484 INFO L78 Accepts]: Start accepts. Automaton has 64418 states and 77397 transitions. Word has length 70 [2024-12-02 06:42:14,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:42:14,485 INFO L471 AbstractCegarLoop]: Abstraction has 64418 states and 77397 transitions. [2024-12-02 06:42:14,485 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.0) internal successors, (121), 10 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:42:14,485 INFO L276 IsEmpty]: Start isEmpty. Operand 64418 states and 77397 transitions. [2024-12-02 06:42:14,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-12-02 06:42:14,486 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:42:14,486 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:42:14,492 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 06:42:14,686 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-12-02 06:42:14,687 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:42:14,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:42:14,687 INFO L85 PathProgramCache]: Analyzing trace with hash -1355477905, now seen corresponding path program 1 times [2024-12-02 06:42:14,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:42:14,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290211584] [2024-12-02 06:42:14,687 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:42:14,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:42:14,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:42:15,987 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:42:15,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:42:15,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290211584] [2024-12-02 06:42:15,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290211584] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:42:15,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757558151] [2024-12-02 06:42:15,987 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:42:15,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:42:15,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:42:15,989 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:42:15,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 06:42:16,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:42:16,075 INFO L256 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-12-02 06:42:16,077 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:42:19,341 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:42:19,341 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:42:21,840 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:42:21,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [757558151] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:42:21,840 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:42:21,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 17, 15] total 49 [2024-12-02 06:42:21,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513227372] [2024-12-02 06:42:21,840 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:42:21,841 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-12-02 06:42:21,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:42:21,841 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-12-02 06:42:21,841 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=2142, Unknown=0, NotChecked=0, Total=2352 [2024-12-02 06:42:21,842 INFO L87 Difference]: Start difference. First operand 64418 states and 77397 transitions. Second operand has 49 states, 49 states have (on average 3.9591836734693877) internal successors, (194), 49 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:45:01,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:45:01,903 INFO L93 Difference]: Finished difference Result 203975 states and 242584 transitions. [2024-12-02 06:45:01,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 747 states. [2024-12-02 06:45:01,903 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 3.9591836734693877) internal successors, (194), 49 states have internal predecessors, (194), 0 states have call successors, (0), 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 70 [2024-12-02 06:45:01,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:45:02,025 INFO L225 Difference]: With dead ends: 203975 [2024-12-02 06:45:02,025 INFO L226 Difference]: Without dead ends: 165094 [2024-12-02 06:45:02,080 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 903 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 791 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308640 ImplicationChecksByTransitivity, 146.4s TimeCoverageRelationStatistics Valid=84292, Invalid=543764, Unknown=0, NotChecked=0, Total=628056 [2024-12-02 06:45:02,081 INFO L435 NwaCegarLoop]: 140 mSDtfsCounter, 12856 mSDsluCounter, 7600 mSDsCounter, 0 mSdLazyCounter, 8572 mSolverCounterSat, 656 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12856 SdHoareTripleChecker+Valid, 7740 SdHoareTripleChecker+Invalid, 9228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 656 IncrementalHoareTripleChecker+Valid, 8572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2024-12-02 06:45:02,081 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12856 Valid, 7740 Invalid, 9228 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [656 Valid, 8572 Invalid, 0 Unknown, 0 Unchecked, 9.3s Time] [2024-12-02 06:45:02,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165094 states. [2024-12-02 06:45:04,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165094 to 66987. [2024-12-02 06:45:04,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66987 states, 66986 states have (on average 1.2007732959125788) internal successors, (80435), 66986 states have internal predecessors, (80435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:45:04,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66987 states to 66987 states and 80435 transitions. [2024-12-02 06:45:04,734 INFO L78 Accepts]: Start accepts. Automaton has 66987 states and 80435 transitions. Word has length 70 [2024-12-02 06:45:04,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:45:04,735 INFO L471 AbstractCegarLoop]: Abstraction has 66987 states and 80435 transitions. [2024-12-02 06:45:04,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 3.9591836734693877) internal successors, (194), 49 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:45:04,735 INFO L276 IsEmpty]: Start isEmpty. Operand 66987 states and 80435 transitions. [2024-12-02 06:45:04,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-12-02 06:45:04,736 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:45:04,736 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:45:04,743 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-12-02 06:45:04,936 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-12-02 06:45:04,937 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:45:04,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:45:04,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1786772309, now seen corresponding path program 1 times [2024-12-02 06:45:04,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:45:04,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410631288] [2024-12-02 06:45:04,937 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:45:04,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:45:04,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:45:05,004 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:45:05,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:45:05,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410631288] [2024-12-02 06:45:05,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410631288] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:45:05,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559392998] [2024-12-02 06:45:05,004 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:45:05,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:45:05,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:45:05,006 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:45:05,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 06:45:05,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:45:05,109 INFO L256 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 06:45:05,110 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:45:05,273 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:45:05,273 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:45:05,359 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:45:05,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1559392998] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:45:05,359 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:45:05,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-12-02 06:45:05,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933772781] [2024-12-02 06:45:05,359 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:45:05,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 06:45:05,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:45:05,360 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 06:45:05,360 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-12-02 06:45:05,360 INFO L87 Difference]: Start difference. First operand 66987 states and 80435 transitions. Second operand has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:45:07,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:45:07,757 INFO L93 Difference]: Finished difference Result 92319 states and 111172 transitions. [2024-12-02 06:45:07,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 06:45:07,758 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 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 70 [2024-12-02 06:45:07,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:45:07,812 INFO L225 Difference]: With dead ends: 92319 [2024-12-02 06:45:07,812 INFO L226 Difference]: Without dead ends: 68133 [2024-12-02 06:45:07,829 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 130 SyntacticMatches, 5 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-12-02 06:45:07,830 INFO L435 NwaCegarLoop]: 74 mSDtfsCounter, 449 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 06:45:07,830 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [449 Valid, 275 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 06:45:07,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68133 states. [2024-12-02 06:45:10,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68133 to 64178. [2024-12-02 06:45:10,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64178 states, 64177 states have (on average 1.195241285818907) internal successors, (76707), 64177 states have internal predecessors, (76707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:45:10,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64178 states to 64178 states and 76707 transitions. [2024-12-02 06:45:10,189 INFO L78 Accepts]: Start accepts. Automaton has 64178 states and 76707 transitions. Word has length 70 [2024-12-02 06:45:10,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:45:10,190 INFO L471 AbstractCegarLoop]: Abstraction has 64178 states and 76707 transitions. [2024-12-02 06:45:10,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:45:10,190 INFO L276 IsEmpty]: Start isEmpty. Operand 64178 states and 76707 transitions. [2024-12-02 06:45:10,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-12-02 06:45:10,195 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:45:10,195 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:45:10,201 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-02 06:45:10,395 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-12-02 06:45:10,395 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:45:10,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:45:10,396 INFO L85 PathProgramCache]: Analyzing trace with hash 468276667, now seen corresponding path program 1 times [2024-12-02 06:45:10,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:45:10,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923067425] [2024-12-02 06:45:10,396 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:45:10,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:45:10,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:45:10,485 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-12-02 06:45:10,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:45:10,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923067425] [2024-12-02 06:45:10,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923067425] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:45:10,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:45:10,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:45:10,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742431509] [2024-12-02 06:45:10,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:45:10,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:45:10,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:45:10,486 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:45:10,486 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:45:10,486 INFO L87 Difference]: Start difference. First operand 64178 states and 76707 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:45:11,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:45:11,835 INFO L93 Difference]: Finished difference Result 89206 states and 106483 transitions. [2024-12-02 06:45:11,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:45:11,836 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 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 06:45:11,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:45:11,859 INFO L225 Difference]: With dead ends: 89206 [2024-12-02 06:45:11,859 INFO L226 Difference]: Without dead ends: 26028 [2024-12-02 06:45:11,878 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 06:45:11,878 INFO L435 NwaCegarLoop]: 96 mSDtfsCounter, 23 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:45:11,878 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 156 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:45:11,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26028 states. [2024-12-02 06:45:12,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26028 to 25473. [2024-12-02 06:45:12,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25473 states, 25472 states have (on average 1.1613536432160805) internal successors, (29582), 25472 states have internal predecessors, (29582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:45:12,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25473 states to 25473 states and 29582 transitions. [2024-12-02 06:45:12,821 INFO L78 Accepts]: Start accepts. Automaton has 25473 states and 29582 transitions. Word has length 110 [2024-12-02 06:45:12,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:45:12,821 INFO L471 AbstractCegarLoop]: Abstraction has 25473 states and 29582 transitions. [2024-12-02 06:45:12,821 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:45:12,821 INFO L276 IsEmpty]: Start isEmpty. Operand 25473 states and 29582 transitions. [2024-12-02 06:45:12,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-12-02 06:45:12,825 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:45:12,825 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:45:12,825 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-12-02 06:45:12,825 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:45:12,826 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:45:12,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1879087429, now seen corresponding path program 1 times [2024-12-02 06:45:12,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:45:12,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760887366] [2024-12-02 06:45:12,826 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:45:12,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:45:12,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:45:13,647 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 16 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:45:13,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:45:13,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760887366] [2024-12-02 06:45:13,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760887366] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:45:13,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127143036] [2024-12-02 06:45:13,647 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:45:13,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:45:13,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:45:13,649 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:45:13,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 06:45:13,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:45:13,761 INFO L256 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-12-02 06:45:13,763 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:45:14,646 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 23 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:45:14,646 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:45:15,731 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 17 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:45:15,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2127143036] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:45:15,731 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:45:15,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 11] total 37 [2024-12-02 06:45:15,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715290908] [2024-12-02 06:45:15,731 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:45:15,732 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-12-02 06:45:15,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:45:15,732 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-12-02 06:45:15,733 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=1200, Unknown=0, NotChecked=0, Total=1332 [2024-12-02 06:45:15,733 INFO L87 Difference]: Start difference. First operand 25473 states and 29582 transitions. Second operand has 37 states, 37 states have (on average 8.64864864864865) internal successors, (320), 37 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:45:19,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:45:19,668 INFO L93 Difference]: Finished difference Result 45902 states and 53122 transitions. [2024-12-02 06:45:19,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-12-02 06:45:19,668 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 8.64864864864865) internal successors, (320), 37 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2024-12-02 06:45:19,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:45:19,694 INFO L225 Difference]: With dead ends: 45902 [2024-12-02 06:45:19,694 INFO L226 Difference]: Without dead ends: 37970 [2024-12-02 06:45:19,700 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1182 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1087, Invalid=4613, Unknown=0, NotChecked=0, Total=5700 [2024-12-02 06:45:19,700 INFO L435 NwaCegarLoop]: 137 mSDtfsCounter, 2040 mSDsluCounter, 2623 mSDsCounter, 0 mSdLazyCounter, 1997 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2040 SdHoareTripleChecker+Valid, 2760 SdHoareTripleChecker+Invalid, 2060 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1997 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-12-02 06:45:19,700 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2040 Valid, 2760 Invalid, 2060 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1997 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-12-02 06:45:19,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37970 states. [2024-12-02 06:45:20,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37970 to 26920. [2024-12-02 06:45:20,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26920 states, 26919 states have (on average 1.1578439020766003) internal successors, (31168), 26919 states have internal predecessors, (31168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:45:20,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26920 states to 26920 states and 31168 transitions. [2024-12-02 06:45:20,782 INFO L78 Accepts]: Start accepts. Automaton has 26920 states and 31168 transitions. Word has length 112 [2024-12-02 06:45:20,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:45:20,783 INFO L471 AbstractCegarLoop]: Abstraction has 26920 states and 31168 transitions. [2024-12-02 06:45:20,783 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 8.64864864864865) internal successors, (320), 37 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:45:20,783 INFO L276 IsEmpty]: Start isEmpty. Operand 26920 states and 31168 transitions. [2024-12-02 06:45:20,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-12-02 06:45:20,787 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:45:20,787 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:45:20,793 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-12-02 06:45:20,987 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-12-02 06:45:20,987 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:45:20,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:45:20,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1168603397, now seen corresponding path program 1 times [2024-12-02 06:45:20,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:45:20,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768476889] [2024-12-02 06:45:20,988 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:45:20,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:45:21,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:45:21,645 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 46 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:45:21,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:45:21,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768476889] [2024-12-02 06:45:21,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768476889] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:45:21,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073865243] [2024-12-02 06:45:21,645 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:45:21,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:45:21,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:45:21,647 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:45:21,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 06:45:21,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:45:21,766 INFO L256 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-12-02 06:45:21,768 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:45:23,069 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 49 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:45:23,070 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:45:25,371 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 21 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:45:25,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2073865243] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:45:25,371 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:45:25,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 15] total 42 [2024-12-02 06:45:25,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158543385] [2024-12-02 06:45:25,372 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:45:25,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-12-02 06:45:25,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:45:25,373 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-12-02 06:45:25,373 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=1555, Unknown=0, NotChecked=0, Total=1722 [2024-12-02 06:45:25,373 INFO L87 Difference]: Start difference. First operand 26920 states and 31168 transitions. Second operand has 42 states, 42 states have (on average 7.5) internal successors, (315), 42 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:45:36,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:45:36,731 INFO L93 Difference]: Finished difference Result 79807 states and 93260 transitions. [2024-12-02 06:45:36,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2024-12-02 06:45:36,732 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 7.5) internal successors, (315), 42 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2024-12-02 06:45:36,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:45:36,791 INFO L225 Difference]: With dead ends: 79807 [2024-12-02 06:45:36,791 INFO L226 Difference]: Without dead ends: 69819 [2024-12-02 06:45:36,807 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3718 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=3084, Invalid=11922, Unknown=0, NotChecked=0, Total=15006 [2024-12-02 06:45:36,807 INFO L435 NwaCegarLoop]: 138 mSDtfsCounter, 3213 mSDsluCounter, 3587 mSDsCounter, 0 mSdLazyCounter, 2898 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3213 SdHoareTripleChecker+Valid, 3725 SdHoareTripleChecker+Invalid, 3010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 2898 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-12-02 06:45:36,808 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3213 Valid, 3725 Invalid, 3010 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 2898 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-12-02 06:45:36,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69819 states. [2024-12-02 06:45:38,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69819 to 30848. [2024-12-02 06:45:38,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30848 states, 30847 states have (on average 1.1554121956754304) internal successors, (35641), 30847 states have internal predecessors, (35641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:45:38,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30848 states to 30848 states and 35641 transitions. [2024-12-02 06:45:38,378 INFO L78 Accepts]: Start accepts. Automaton has 30848 states and 35641 transitions. Word has length 114 [2024-12-02 06:45:38,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:45:38,379 INFO L471 AbstractCegarLoop]: Abstraction has 30848 states and 35641 transitions. [2024-12-02 06:45:38,379 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 7.5) internal successors, (315), 42 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:45:38,379 INFO L276 IsEmpty]: Start isEmpty. Operand 30848 states and 35641 transitions. [2024-12-02 06:45:38,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-12-02 06:45:38,383 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:45:38,383 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:45:38,391 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-12-02 06:45:38,583 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-12-02 06:45:38,583 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:45:38,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:45:38,584 INFO L85 PathProgramCache]: Analyzing trace with hash 446744775, now seen corresponding path program 1 times [2024-12-02 06:45:38,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:45:38,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969292050] [2024-12-02 06:45:38,584 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:45:38,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:45:38,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:45:39,234 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 26 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:45:39,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:45:39,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969292050] [2024-12-02 06:45:39,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969292050] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:45:39,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1325526711] [2024-12-02 06:45:39,234 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:45:39,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:45:39,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:45:39,236 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:45:39,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-02 06:45:39,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:45:39,337 INFO L256 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-12-02 06:45:39,339 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:45:41,265 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 16 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:45:41,265 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:45:44,878 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 16 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:45:44,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1325526711] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:45:44,878 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:45:44,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 18, 18] total 46 [2024-12-02 06:45:44,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545151823] [2024-12-02 06:45:44,879 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:45:44,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-12-02 06:45:44,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:45:44,879 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-12-02 06:45:44,880 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=1893, Unknown=0, NotChecked=0, Total=2070 [2024-12-02 06:45:44,880 INFO L87 Difference]: Start difference. First operand 30848 states and 35641 transitions. Second operand has 46 states, 46 states have (on average 7.021739130434782) internal successors, (323), 46 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:46:33,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:46:33,401 INFO L93 Difference]: Finished difference Result 58359 states and 67152 transitions. [2024-12-02 06:46:33,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 290 states. [2024-12-02 06:46:33,401 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 7.021739130434782) internal successors, (323), 46 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2024-12-02 06:46:33,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:46:33,429 INFO L225 Difference]: With dead ends: 58359 [2024-12-02 06:46:33,429 INFO L226 Difference]: Without dead ends: 42824 [2024-12-02 06:46:33,442 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 527 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 332 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45239 ImplicationChecksByTransitivity, 40.8s TimeCoverageRelationStatistics Valid=14010, Invalid=97212, Unknown=0, NotChecked=0, Total=111222 [2024-12-02 06:46:33,442 INFO L435 NwaCegarLoop]: 388 mSDtfsCounter, 4299 mSDsluCounter, 7814 mSDsCounter, 0 mSdLazyCounter, 8099 mSolverCounterSat, 187 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4299 SdHoareTripleChecker+Valid, 8202 SdHoareTripleChecker+Invalid, 8286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 187 IncrementalHoareTripleChecker+Valid, 8099 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2024-12-02 06:46:33,442 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4299 Valid, 8202 Invalid, 8286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [187 Valid, 8099 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2024-12-02 06:46:33,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42824 states. [2024-12-02 06:46:34,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42824 to 20303. [2024-12-02 06:46:34,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20303 states, 20302 states have (on average 1.152053984829081) internal successors, (23389), 20302 states have internal predecessors, (23389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:46:34,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20303 states to 20303 states and 23389 transitions. [2024-12-02 06:46:34,746 INFO L78 Accepts]: Start accepts. Automaton has 20303 states and 23389 transitions. Word has length 114 [2024-12-02 06:46:34,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:46:34,747 INFO L471 AbstractCegarLoop]: Abstraction has 20303 states and 23389 transitions. [2024-12-02 06:46:34,747 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 7.021739130434782) internal successors, (323), 46 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:46:34,747 INFO L276 IsEmpty]: Start isEmpty. Operand 20303 states and 23389 transitions. [2024-12-02 06:46:34,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-12-02 06:46:34,749 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:46:34,749 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:46:34,757 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-12-02 06:46:34,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-12-02 06:46:34,950 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:46:34,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:46:34,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1488828505, now seen corresponding path program 1 times [2024-12-02 06:46:34,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:46:34,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987646674] [2024-12-02 06:46:34,950 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:46:34,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:46:34,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:46:35,997 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 35 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:46:35,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:46:35,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987646674] [2024-12-02 06:46:35,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987646674] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:46:35,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077707381] [2024-12-02 06:46:35,997 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:46:35,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:46:35,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:46:35,999 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:46:36,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-12-02 06:46:36,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:46:36,096 INFO L256 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-12-02 06:46:36,098 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:46:37,164 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 28 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:46:37,164 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:46:39,401 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 28 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:46:39,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077707381] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:46:39,401 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:46:39,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 15, 16] total 49 [2024-12-02 06:46:39,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863328488] [2024-12-02 06:46:39,401 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:46:39,402 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-12-02 06:46:39,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:46:39,402 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-12-02 06:46:39,403 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=2169, Unknown=0, NotChecked=0, Total=2352 [2024-12-02 06:46:39,403 INFO L87 Difference]: Start difference. First operand 20303 states and 23389 transitions. Second operand has 49 states, 49 states have (on average 6.346938775510204) internal successors, (311), 49 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:47:08,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:47:08,226 INFO L93 Difference]: Finished difference Result 54347 states and 62676 transitions. [2024-12-02 06:47:08,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 184 states. [2024-12-02 06:47:08,227 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 6.346938775510204) internal successors, (311), 49 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2024-12-02 06:47:08,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:47:08,259 INFO L225 Difference]: With dead ends: 54347 [2024-12-02 06:47:08,259 INFO L226 Difference]: Without dead ends: 38616 [2024-12-02 06:47:08,267 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 226 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19515 ImplicationChecksByTransitivity, 23.0s TimeCoverageRelationStatistics Valid=8346, Invalid=43410, Unknown=0, NotChecked=0, Total=51756 [2024-12-02 06:47:08,267 INFO L435 NwaCegarLoop]: 186 mSDtfsCounter, 5062 mSDsluCounter, 6817 mSDsCounter, 0 mSdLazyCounter, 5274 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5062 SdHoareTripleChecker+Valid, 7003 SdHoareTripleChecker+Invalid, 5465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 5274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2024-12-02 06:47:08,267 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5062 Valid, 7003 Invalid, 5465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 5274 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2024-12-02 06:47:08,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38616 states. [2024-12-02 06:47:10,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38616 to 26068. [2024-12-02 06:47:10,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26068 states, 26067 states have (on average 1.1504584340353703) internal successors, (29989), 26067 states have internal predecessors, (29989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:47:10,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26068 states to 26068 states and 29989 transitions. [2024-12-02 06:47:10,392 INFO L78 Accepts]: Start accepts. Automaton has 26068 states and 29989 transitions. Word has length 114 [2024-12-02 06:47:10,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:47:10,392 INFO L471 AbstractCegarLoop]: Abstraction has 26068 states and 29989 transitions. [2024-12-02 06:47:10,392 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 6.346938775510204) internal successors, (311), 49 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:47:10,393 INFO L276 IsEmpty]: Start isEmpty. Operand 26068 states and 29989 transitions. [2024-12-02 06:47:10,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-12-02 06:47:10,395 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:47:10,395 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:47:10,401 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-12-02 06:47:10,595 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-12-02 06:47:10,596 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:47:10,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:47:10,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1203973610, now seen corresponding path program 1 times [2024-12-02 06:47:10,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:47:10,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516617267] [2024-12-02 06:47:10,596 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:47:10,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:47:10,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:47:11,179 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 37 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:47:11,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:47:11,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516617267] [2024-12-02 06:47:11,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516617267] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:47:11,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [811795549] [2024-12-02 06:47:11,179 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:47:11,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:47:11,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:47:11,180 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:47:11,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-12-02 06:47:11,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:47:11,296 INFO L256 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-12-02 06:47:11,298 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:47:12,361 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 49 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:47:12,361 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:47:14,550 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 21 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:47:14,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [811795549] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:47:14,550 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:47:14,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15, 16] total 45 [2024-12-02 06:47:14,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079048181] [2024-12-02 06:47:14,550 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:47:14,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-12-02 06:47:14,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:47:14,551 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-12-02 06:47:14,551 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=1799, Unknown=0, NotChecked=0, Total=1980 [2024-12-02 06:47:14,551 INFO L87 Difference]: Start difference. First operand 26068 states and 29989 transitions. Second operand has 45 states, 45 states have (on average 7.066666666666666) internal successors, (318), 45 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:47:23,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:47:23,563 INFO L93 Difference]: Finished difference Result 55269 states and 63561 transitions. [2024-12-02 06:47:23,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2024-12-02 06:47:23,563 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 7.066666666666666) internal successors, (318), 45 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2024-12-02 06:47:23,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:47:23,595 INFO L225 Difference]: With dead ends: 55269 [2024-12-02 06:47:23,595 INFO L226 Difference]: Without dead ends: 45496 [2024-12-02 06:47:23,602 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2861 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=2059, Invalid=9497, Unknown=0, NotChecked=0, Total=11556 [2024-12-02 06:47:23,603 INFO L435 NwaCegarLoop]: 111 mSDtfsCounter, 3520 mSDsluCounter, 3144 mSDsCounter, 0 mSdLazyCounter, 2311 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3520 SdHoareTripleChecker+Valid, 3255 SdHoareTripleChecker+Invalid, 2462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 2311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-12-02 06:47:23,603 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3520 Valid, 3255 Invalid, 2462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 2311 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-12-02 06:47:23,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45496 states. [2024-12-02 06:47:25,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45496 to 25587. [2024-12-02 06:47:25,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25587 states, 25586 states have (on average 1.1492613147815212) internal successors, (29405), 25586 states have internal predecessors, (29405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:47:25,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25587 states to 25587 states and 29405 transitions. [2024-12-02 06:47:25,717 INFO L78 Accepts]: Start accepts. Automaton has 25587 states and 29405 transitions. Word has length 115 [2024-12-02 06:47:25,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:47:25,717 INFO L471 AbstractCegarLoop]: Abstraction has 25587 states and 29405 transitions. [2024-12-02 06:47:25,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 7.066666666666666) internal successors, (318), 45 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:47:25,717 INFO L276 IsEmpty]: Start isEmpty. Operand 25587 states and 29405 transitions. [2024-12-02 06:47:25,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-12-02 06:47:25,720 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:47:25,720 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:47:25,725 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-12-02 06:47:25,920 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:47:25,920 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:47:25,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:47:25,921 INFO L85 PathProgramCache]: Analyzing trace with hash -921279642, now seen corresponding path program 1 times [2024-12-02 06:47:25,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:47:25,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854369985] [2024-12-02 06:47:25,921 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:47:25,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:47:25,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:47:26,646 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 16 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:47:26,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:47:26,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854369985] [2024-12-02 06:47:26,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854369985] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:47:26,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425364935] [2024-12-02 06:47:26,646 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:47:26,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:47:26,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:47:26,647 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:47:26,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-12-02 06:47:26,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:47:26,749 INFO L256 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-12-02 06:47:26,751 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:47:27,885 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 51 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:47:27,885 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:47:30,544 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 41 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:47:30,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1425364935] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:47:30,544 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:47:30,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 14, 12] total 43 [2024-12-02 06:47:30,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602613145] [2024-12-02 06:47:30,544 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:47:30,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-12-02 06:47:30,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:47:30,545 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-12-02 06:47:30,545 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=1648, Unknown=0, NotChecked=0, Total=1806 [2024-12-02 06:47:30,545 INFO L87 Difference]: Start difference. First operand 25587 states and 29405 transitions. Second operand has 43 states, 43 states have (on average 7.441860465116279) internal successors, (320), 43 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:48:16,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:48:16,924 INFO L93 Difference]: Finished difference Result 49045 states and 56187 transitions. [2024-12-02 06:48:16,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 357 states. [2024-12-02 06:48:16,925 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 7.441860465116279) internal successors, (320), 43 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2024-12-02 06:48:16,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:48:16,952 INFO L225 Difference]: With dead ends: 49045 [2024-12-02 06:48:16,952 INFO L226 Difference]: Without dead ends: 42318 [2024-12-02 06:48:16,962 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 604 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 392 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64885 ImplicationChecksByTransitivity, 38.5s TimeCoverageRelationStatistics Valid=15885, Invalid=138957, Unknown=0, NotChecked=0, Total=154842 [2024-12-02 06:48:16,962 INFO L435 NwaCegarLoop]: 410 mSDtfsCounter, 6597 mSDsluCounter, 7888 mSDsCounter, 0 mSdLazyCounter, 7181 mSolverCounterSat, 225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6597 SdHoareTripleChecker+Valid, 8298 SdHoareTripleChecker+Invalid, 7406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 7181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2024-12-02 06:48:16,962 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6597 Valid, 8298 Invalid, 7406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [225 Valid, 7181 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2024-12-02 06:48:16,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42318 states. [2024-12-02 06:48:19,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42318 to 25438. [2024-12-02 06:48:19,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25438 states, 25437 states have (on average 1.1478161732908756) internal successors, (29197), 25437 states have internal predecessors, (29197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:48:19,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25438 states to 25438 states and 29197 transitions. [2024-12-02 06:48:19,228 INFO L78 Accepts]: Start accepts. Automaton has 25438 states and 29197 transitions. Word has length 117 [2024-12-02 06:48:19,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:48:19,229 INFO L471 AbstractCegarLoop]: Abstraction has 25438 states and 29197 transitions. [2024-12-02 06:48:19,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 7.441860465116279) internal successors, (320), 43 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:48:19,229 INFO L276 IsEmpty]: Start isEmpty. Operand 25438 states and 29197 transitions. [2024-12-02 06:48:19,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-12-02 06:48:19,231 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:48:19,231 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 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 06:48:19,237 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-12-02 06:48:19,432 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:48:19,432 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:48:19,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:48:19,432 INFO L85 PathProgramCache]: Analyzing trace with hash -48380028, now seen corresponding path program 1 times [2024-12-02 06:48:19,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:48:19,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047989678] [2024-12-02 06:48:19,432 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:48:19,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:48:19,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:48:20,092 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 37 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:48:20,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:48:20,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047989678] [2024-12-02 06:48:20,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047989678] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:48:20,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [450908858] [2024-12-02 06:48:20,092 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:48:20,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:48:20,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:48:20,094 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:48:20,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-12-02 06:48:20,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:48:20,208 INFO L256 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-12-02 06:48:20,210 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:48:22,957 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 37 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:48:22,958 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:48:29,396 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 25 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:48:29,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [450908858] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:48:29,396 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:48:29,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 24] total 62 [2024-12-02 06:48:29,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606369405] [2024-12-02 06:48:29,396 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:48:29,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-12-02 06:48:29,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:48:29,397 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-12-02 06:48:29,397 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=459, Invalid=3323, Unknown=0, NotChecked=0, Total=3782 [2024-12-02 06:48:29,398 INFO L87 Difference]: Start difference. First operand 25438 states and 29197 transitions. Second operand has 62 states, 62 states have (on average 5.225806451612903) internal successors, (324), 62 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:49:14,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:49:14,346 INFO L93 Difference]: Finished difference Result 40288 states and 46170 transitions. [2024-12-02 06:49:14,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 227 states. [2024-12-02 06:49:14,346 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 5.225806451612903) internal successors, (324), 62 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2024-12-02 06:49:14,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:49:14,371 INFO L225 Difference]: With dead ends: 40288 [2024-12-02 06:49:14,371 INFO L226 Difference]: Without dead ends: 35580 [2024-12-02 06:49:14,377 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 282 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30434 ImplicationChecksByTransitivity, 40.0s TimeCoverageRelationStatistics Valid=13625, Invalid=66747, Unknown=0, NotChecked=0, Total=80372 [2024-12-02 06:49:14,377 INFO L435 NwaCegarLoop]: 236 mSDtfsCounter, 5473 mSDsluCounter, 4990 mSDsCounter, 0 mSdLazyCounter, 4441 mSolverCounterSat, 341 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5473 SdHoareTripleChecker+Valid, 5226 SdHoareTripleChecker+Invalid, 4782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 341 IncrementalHoareTripleChecker+Valid, 4441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2024-12-02 06:49:14,378 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5473 Valid, 5226 Invalid, 4782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [341 Valid, 4441 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2024-12-02 06:49:14,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35580 states. [2024-12-02 06:49:17,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35580 to 29396. [2024-12-02 06:49:17,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29396 states, 29395 states have (on average 1.148222486817486) internal successors, (33752), 29395 states have internal predecessors, (33752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:49:17,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29396 states to 29396 states and 33752 transitions. [2024-12-02 06:49:17,189 INFO L78 Accepts]: Start accepts. Automaton has 29396 states and 33752 transitions. Word has length 117 [2024-12-02 06:49:17,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:49:17,190 INFO L471 AbstractCegarLoop]: Abstraction has 29396 states and 33752 transitions. [2024-12-02 06:49:17,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 5.225806451612903) internal successors, (324), 62 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:49:17,190 INFO L276 IsEmpty]: Start isEmpty. Operand 29396 states and 33752 transitions. [2024-12-02 06:49:17,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-12-02 06:49:17,192 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:49:17,192 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:49:17,198 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-12-02 06:49:17,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-12-02 06:49:17,393 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:49:17,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:49:17,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1118251352, now seen corresponding path program 1 times [2024-12-02 06:49:17,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:49:17,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945166570] [2024-12-02 06:49:17,393 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:49:17,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:49:17,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:49:17,475 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 56 proven. 4 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-12-02 06:49:17,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:49:17,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945166570] [2024-12-02 06:49:17,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945166570] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:49:17,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [344874334] [2024-12-02 06:49:17,475 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:49:17,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:49:17,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:49:17,477 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:49:17,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-12-02 06:49:17,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:49:17,582 INFO L256 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 06:49:17,583 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:49:17,701 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 56 proven. 4 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-12-02 06:49:17,701 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:49:17,775 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 56 proven. 4 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-12-02 06:49:17,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [344874334] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:49:17,775 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:49:17,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2024-12-02 06:49:17,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085922639] [2024-12-02 06:49:17,776 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:49:17,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-12-02 06:49:17,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:49:17,776 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-12-02 06:49:17,776 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2024-12-02 06:49:17,776 INFO L87 Difference]: Start difference. First operand 29396 states and 33752 transitions. Second operand has 16 states, 16 states have (on average 12.4375) internal successors, (199), 15 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:49:20,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:49:20,362 INFO L93 Difference]: Finished difference Result 33933 states and 39047 transitions. [2024-12-02 06:49:20,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 06:49:20,362 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 12.4375) internal successors, (199), 15 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2024-12-02 06:49:20,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:49:20,383 INFO L225 Difference]: With dead ends: 33933 [2024-12-02 06:49:20,383 INFO L226 Difference]: Without dead ends: 27020 [2024-12-02 06:49:20,389 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=128, Invalid=334, Unknown=0, NotChecked=0, Total=462 [2024-12-02 06:49:20,389 INFO L435 NwaCegarLoop]: 81 mSDtfsCounter, 447 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 447 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 06:49:20,389 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [447 Valid, 325 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 06:49:20,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27020 states. [2024-12-02 06:49:22,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27020 to 26550. [2024-12-02 06:49:22,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26550 states, 26549 states have (on average 1.1435082300651624) internal successors, (30359), 26549 states have internal predecessors, (30359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:49:22,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26550 states to 26550 states and 30359 transitions. [2024-12-02 06:49:22,948 INFO L78 Accepts]: Start accepts. Automaton has 26550 states and 30359 transitions. Word has length 117 [2024-12-02 06:49:22,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:49:22,948 INFO L471 AbstractCegarLoop]: Abstraction has 26550 states and 30359 transitions. [2024-12-02 06:49:22,949 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 12.4375) internal successors, (199), 15 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:49:22,949 INFO L276 IsEmpty]: Start isEmpty. Operand 26550 states and 30359 transitions. [2024-12-02 06:49:22,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-12-02 06:49:22,954 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:49:22,954 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-12-02 06:49:22,960 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-12-02 06:49:23,154 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-12-02 06:49:23,155 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:49:23,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:49:23,155 INFO L85 PathProgramCache]: Analyzing trace with hash 306207658, now seen corresponding path program 1 times [2024-12-02 06:49:23,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:49:23,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861189773] [2024-12-02 06:49:23,155 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:49:23,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:49:23,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:49:23,651 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 142 proven. 73 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-12-02 06:49:23,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:49:23,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861189773] [2024-12-02 06:49:23,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861189773] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:49:23,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [80061851] [2024-12-02 06:49:23,651 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:49:23,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:49:23,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:49:23,652 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:49:23,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-12-02 06:49:23,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:49:23,813 INFO L256 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-12-02 06:49:23,816 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:49:25,638 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 145 proven. 70 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-12-02 06:49:25,638 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:49:28,854 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 87 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:49:28,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [80061851] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:49:28,854 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:49:28,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 17, 19] total 43 [2024-12-02 06:49:28,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906841766] [2024-12-02 06:49:28,855 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:49:28,855 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-12-02 06:49:28,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:49:28,856 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-12-02 06:49:28,856 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=1593, Unknown=0, NotChecked=0, Total=1806 [2024-12-02 06:49:28,856 INFO L87 Difference]: Start difference. First operand 26550 states and 30359 transitions. Second operand has 43 states, 43 states have (on average 7.930232558139535) internal successors, (341), 43 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:49:47,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:49:47,796 INFO L93 Difference]: Finished difference Result 75121 states and 86327 transitions. [2024-12-02 06:49:47,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 170 states. [2024-12-02 06:49:47,796 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 7.930232558139535) internal successors, (341), 43 states have internal predecessors, (341), 0 states have call successors, (0), 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 153 [2024-12-02 06:49:47,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:49:47,836 INFO L225 Difference]: With dead ends: 75121 [2024-12-02 06:49:47,836 INFO L226 Difference]: Without dead ends: 57630 [2024-12-02 06:49:47,847 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 516 GetRequests, 307 SyntacticMatches, 0 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16121 ImplicationChecksByTransitivity, 12.4s TimeCoverageRelationStatistics Valid=7866, Invalid=36444, Unknown=0, NotChecked=0, Total=44310 [2024-12-02 06:49:47,847 INFO L435 NwaCegarLoop]: 134 mSDtfsCounter, 3977 mSDsluCounter, 2865 mSDsCounter, 0 mSdLazyCounter, 2981 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3977 SdHoareTripleChecker+Valid, 2999 SdHoareTripleChecker+Invalid, 3163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 2981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-12-02 06:49:47,848 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3977 Valid, 2999 Invalid, 3163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 2981 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-12-02 06:49:47,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57630 states. [2024-12-02 06:49:51,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57630 to 36046. [2024-12-02 06:49:51,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36046 states, 36045 states have (on average 1.1452073796643085) internal successors, (41279), 36045 states have internal predecessors, (41279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:49:51,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36046 states to 36046 states and 41279 transitions. [2024-12-02 06:49:51,676 INFO L78 Accepts]: Start accepts. Automaton has 36046 states and 41279 transitions. Word has length 153 [2024-12-02 06:49:51,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:49:51,677 INFO L471 AbstractCegarLoop]: Abstraction has 36046 states and 41279 transitions. [2024-12-02 06:49:51,677 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 7.930232558139535) internal successors, (341), 43 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:49:51,677 INFO L276 IsEmpty]: Start isEmpty. Operand 36046 states and 41279 transitions. [2024-12-02 06:49:51,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-12-02 06:49:51,681 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:49:51,681 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 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 06:49:51,687 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-12-02 06:49:51,881 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:49:51,882 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:49:51,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:49:51,882 INFO L85 PathProgramCache]: Analyzing trace with hash -176763286, now seen corresponding path program 1 times [2024-12-02 06:49:51,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:49:51,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666523004] [2024-12-02 06:49:51,882 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:49:51,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:49:51,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:49:52,371 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 140 proven. 25 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-12-02 06:49:52,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:49:52,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666523004] [2024-12-02 06:49:52,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666523004] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:49:52,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [669678370] [2024-12-02 06:49:52,372 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:49:52,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:49:52,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:49:52,373 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:49:52,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-12-02 06:49:52,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:49:52,503 INFO L256 TraceCheckSpWp]: Trace formula consists of 539 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-12-02 06:49:52,505 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:49:53,816 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 125 proven. 101 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-12-02 06:49:53,816 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:49:55,317 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 114 proven. 112 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-12-02 06:49:55,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [669678370] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:49:55,317 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:49:55,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 12] total 31 [2024-12-02 06:49:55,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501123131] [2024-12-02 06:49:55,317 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:49:55,318 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-12-02 06:49:55,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:49:55,318 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-12-02 06:49:55,318 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=814, Unknown=0, NotChecked=0, Total=930 [2024-12-02 06:49:55,318 INFO L87 Difference]: Start difference. First operand 36046 states and 41279 transitions. Second operand has 31 states, 31 states have (on average 9.35483870967742) internal successors, (290), 31 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:50:02,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:50:02,159 INFO L93 Difference]: Finished difference Result 54716 states and 62538 transitions. [2024-12-02 06:50:02,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-12-02 06:50:02,160 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 9.35483870967742) internal successors, (290), 31 states have internal predecessors, (290), 0 states have call successors, (0), 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 153 [2024-12-02 06:50:02,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:50:02,190 INFO L225 Difference]: With dead ends: 54716 [2024-12-02 06:50:02,191 INFO L226 Difference]: Without dead ends: 42715 [2024-12-02 06:50:02,199 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 843 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1001, Invalid=3289, Unknown=0, NotChecked=0, Total=4290 [2024-12-02 06:50:02,199 INFO L435 NwaCegarLoop]: 144 mSDtfsCounter, 2044 mSDsluCounter, 2371 mSDsCounter, 0 mSdLazyCounter, 1694 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2044 SdHoareTripleChecker+Valid, 2515 SdHoareTripleChecker+Invalid, 1727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-12-02 06:50:02,200 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2044 Valid, 2515 Invalid, 1727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1694 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-12-02 06:50:02,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42715 states. [2024-12-02 06:50:05,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42715 to 35805. [2024-12-02 06:50:06,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35805 states, 35804 states have (on average 1.1428332029940789) internal successors, (40918), 35804 states have internal predecessors, (40918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:50:06,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35805 states to 35805 states and 40918 transitions. [2024-12-02 06:50:06,038 INFO L78 Accepts]: Start accepts. Automaton has 35805 states and 40918 transitions. Word has length 153 [2024-12-02 06:50:06,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:50:06,039 INFO L471 AbstractCegarLoop]: Abstraction has 35805 states and 40918 transitions. [2024-12-02 06:50:06,039 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 9.35483870967742) internal successors, (290), 31 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:50:06,039 INFO L276 IsEmpty]: Start isEmpty. Operand 35805 states and 40918 transitions. [2024-12-02 06:50:06,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-12-02 06:50:06,043 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:50:06,043 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-12-02 06:50:06,049 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-12-02 06:50:06,244 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:50:06,244 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:50:06,244 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:50:06,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1390367512, now seen corresponding path program 1 times [2024-12-02 06:50:06,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:50:06,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089105156] [2024-12-02 06:50:06,244 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:50:06,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:50:06,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:50:06,936 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 71 proven. 163 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-12-02 06:50:06,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:50:06,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089105156] [2024-12-02 06:50:06,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089105156] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:50:06,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [770414308] [2024-12-02 06:50:06,937 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:50:06,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:50:06,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:50:06,938 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:50:06,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-12-02 06:50:07,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:50:07,089 INFO L256 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-12-02 06:50:07,090 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:50:08,564 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 157 proven. 52 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-12-02 06:50:08,564 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:50:09,582 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 185 proven. 24 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-12-02 06:50:09,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [770414308] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:50:09,582 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:50:09,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 17, 13] total 37 [2024-12-02 06:50:09,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116884148] [2024-12-02 06:50:09,583 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:50:09,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-12-02 06:50:09,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:50:09,584 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-12-02 06:50:09,584 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=1174, Unknown=0, NotChecked=0, Total=1332 [2024-12-02 06:50:09,584 INFO L87 Difference]: Start difference. First operand 35805 states and 40918 transitions. Second operand has 37 states, 37 states have (on average 9.513513513513514) internal successors, (352), 37 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:50:24,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:50:24,548 INFO L93 Difference]: Finished difference Result 81797 states and 93885 transitions. [2024-12-02 06:50:24,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2024-12-02 06:50:24,549 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 9.513513513513514) internal successors, (352), 37 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 153 [2024-12-02 06:50:24,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:50:24,593 INFO L225 Difference]: With dead ends: 81797 [2024-12-02 06:50:24,593 INFO L226 Difference]: Without dead ends: 60839 [2024-12-02 06:50:24,605 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 551 GetRequests, 376 SyntacticMatches, 1 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10643 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=4697, Invalid=26103, Unknown=0, NotChecked=0, Total=30800 [2024-12-02 06:50:24,606 INFO L435 NwaCegarLoop]: 156 mSDtfsCounter, 2940 mSDsluCounter, 3084 mSDsCounter, 0 mSdLazyCounter, 3212 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2940 SdHoareTripleChecker+Valid, 3240 SdHoareTripleChecker+Invalid, 3338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 3212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-12-02 06:50:24,606 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2940 Valid, 3240 Invalid, 3338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 3212 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-12-02 06:50:24,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60839 states. [2024-12-02 06:50:29,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60839 to 41598. [2024-12-02 06:50:29,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41598 states, 41597 states have (on average 1.1398658557107484) internal successors, (47415), 41597 states have internal predecessors, (47415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:50:29,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41598 states to 41598 states and 47415 transitions. [2024-12-02 06:50:29,352 INFO L78 Accepts]: Start accepts. Automaton has 41598 states and 47415 transitions. Word has length 153 [2024-12-02 06:50:29,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:50:29,352 INFO L471 AbstractCegarLoop]: Abstraction has 41598 states and 47415 transitions. [2024-12-02 06:50:29,352 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 9.513513513513514) internal successors, (352), 37 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:50:29,352 INFO L276 IsEmpty]: Start isEmpty. Operand 41598 states and 47415 transitions. [2024-12-02 06:50:29,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-12-02 06:50:29,357 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:50:29,357 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 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 06:50:29,363 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-12-02 06:50:29,557 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-12-02 06:50:29,557 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:50:29,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:50:29,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1449115560, now seen corresponding path program 1 times [2024-12-02 06:50:29,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:50:29,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588289053] [2024-12-02 06:50:29,558 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:50:29,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:50:29,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:50:30,136 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 138 proven. 19 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-12-02 06:50:30,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:50:30,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588289053] [2024-12-02 06:50:30,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588289053] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:50:30,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301571334] [2024-12-02 06:50:30,136 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:50:30,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:50:30,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:50:30,138 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:50:30,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-12-02 06:50:30,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:50:30,278 INFO L256 TraceCheckSpWp]: Trace formula consists of 539 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-12-02 06:50:30,279 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:50:31,440 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 138 proven. 19 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-12-02 06:50:31,440 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:50:32,874 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 138 proven. 19 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-12-02 06:50:32,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [301571334] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:50:32,874 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:50:32,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 28 [2024-12-02 06:50:32,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501614982] [2024-12-02 06:50:32,874 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:50:32,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-12-02 06:50:32,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:50:32,875 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-12-02 06:50:32,875 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=633, Unknown=0, NotChecked=0, Total=756 [2024-12-02 06:50:32,875 INFO L87 Difference]: Start difference. First operand 41598 states and 47415 transitions. Second operand has 28 states, 28 states have (on average 7.0) internal successors, (196), 28 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:50:39,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:50:39,994 INFO L93 Difference]: Finished difference Result 71696 states and 81982 transitions. [2024-12-02 06:50:39,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-12-02 06:50:39,995 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 7.0) internal successors, (196), 28 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 153 [2024-12-02 06:50:39,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:50:40,033 INFO L225 Difference]: With dead ends: 71696 [2024-12-02 06:50:40,033 INFO L226 Difference]: Without dead ends: 51272 [2024-12-02 06:50:40,043 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 291 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 570 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=822, Invalid=2148, Unknown=0, NotChecked=0, Total=2970 [2024-12-02 06:50:40,044 INFO L435 NwaCegarLoop]: 110 mSDtfsCounter, 1607 mSDsluCounter, 1157 mSDsCounter, 0 mSdLazyCounter, 828 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1607 SdHoareTripleChecker+Valid, 1267 SdHoareTripleChecker+Invalid, 852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 828 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 06:50:40,044 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1607 Valid, 1267 Invalid, 852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 828 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 06:50:40,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51272 states. [2024-12-02 06:50:44,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51272 to 42272. [2024-12-02 06:50:44,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42272 states, 42271 states have (on average 1.1375647607106527) internal successors, (48086), 42271 states have internal predecessors, (48086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:50:45,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42272 states to 42272 states and 48086 transitions. [2024-12-02 06:50:45,028 INFO L78 Accepts]: Start accepts. Automaton has 42272 states and 48086 transitions. Word has length 153 [2024-12-02 06:50:45,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:50:45,028 INFO L471 AbstractCegarLoop]: Abstraction has 42272 states and 48086 transitions. [2024-12-02 06:50:45,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 7.0) internal successors, (196), 28 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:50:45,028 INFO L276 IsEmpty]: Start isEmpty. Operand 42272 states and 48086 transitions. [2024-12-02 06:50:45,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-12-02 06:50:45,032 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:50:45,033 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 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 06:50:45,039 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-12-02 06:50:45,233 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:50:45,233 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:50:45,233 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:50:45,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1985144698, now seen corresponding path program 1 times [2024-12-02 06:50:45,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:50:45,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932132663] [2024-12-02 06:50:45,234 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:50:45,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:50:45,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:50:45,301 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2024-12-02 06:50:45,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:50:45,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932132663] [2024-12-02 06:50:45,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932132663] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:50:45,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:50:45,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 06:50:45,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986542937] [2024-12-02 06:50:45,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:50:45,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 06:50:45,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:50:45,301 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 06:50:45,301 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-12-02 06:50:45,301 INFO L87 Difference]: Start difference. First operand 42272 states and 48086 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:50:49,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:50:49,667 INFO L93 Difference]: Finished difference Result 42278 states and 48089 transitions. [2024-12-02 06:50:49,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 06:50:49,667 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 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 153 [2024-12-02 06:50:49,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:50:49,697 INFO L225 Difference]: With dead ends: 42278 [2024-12-02 06:50:49,697 INFO L226 Difference]: Without dead ends: 39219 [2024-12-02 06:50:49,702 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-12-02 06:50:49,702 INFO L435 NwaCegarLoop]: 118 mSDtfsCounter, 267 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:50:49,703 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [267 Valid, 234 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:50:49,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39219 states. [2024-12-02 06:50:54,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39219 to 39215. [2024-12-02 06:50:54,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39215 states, 39214 states have (on average 1.1390064772785229) internal successors, (44665), 39214 states have internal predecessors, (44665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:50:54,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39215 states to 39215 states and 44665 transitions. [2024-12-02 06:50:54,325 INFO L78 Accepts]: Start accepts. Automaton has 39215 states and 44665 transitions. Word has length 153 [2024-12-02 06:50:54,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:50:54,326 INFO L471 AbstractCegarLoop]: Abstraction has 39215 states and 44665 transitions. [2024-12-02 06:50:54,326 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:50:54,326 INFO L276 IsEmpty]: Start isEmpty. Operand 39215 states and 44665 transitions. [2024-12-02 06:50:54,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-12-02 06:50:54,329 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:50:54,329 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 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 06:50:54,329 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-12-02 06:50:54,329 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:50:54,330 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:50:54,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1810642380, now seen corresponding path program 1 times [2024-12-02 06:50:54,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:50:54,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617437929] [2024-12-02 06:50:54,330 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:50:54,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:50:54,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:50:54,732 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 142 proven. 32 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-12-02 06:50:54,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:50:54,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617437929] [2024-12-02 06:50:54,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617437929] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:50:54,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1391177054] [2024-12-02 06:50:54,733 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:50:54,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:50:54,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:50:54,734 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:50:54,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-12-02 06:50:54,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:50:54,885 INFO L256 TraceCheckSpWp]: Trace formula consists of 539 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-12-02 06:50:54,886 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:50:56,267 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 142 proven. 32 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-12-02 06:50:56,267 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:50:57,051 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 142 proven. 32 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-12-02 06:50:57,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1391177054] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:50:57,051 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:50:57,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15, 15] total 34 [2024-12-02 06:50:57,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20261835] [2024-12-02 06:50:57,051 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:50:57,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-12-02 06:50:57,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:50:57,052 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-12-02 06:50:57,052 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=906, Unknown=0, NotChecked=0, Total=1122 [2024-12-02 06:50:57,053 INFO L87 Difference]: Start difference. First operand 39215 states and 44665 transitions. Second operand has 34 states, 34 states have (on average 6.382352941176471) internal successors, (217), 34 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:51:04,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:51:04,433 INFO L93 Difference]: Finished difference Result 56923 states and 64743 transitions. [2024-12-02 06:51:04,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-12-02 06:51:04,434 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 6.382352941176471) internal successors, (217), 34 states have internal predecessors, (217), 0 states have call successors, (0), 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 153 [2024-12-02 06:51:04,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:51:04,468 INFO L225 Difference]: With dead ends: 56923 [2024-12-02 06:51:04,468 INFO L226 Difference]: Without dead ends: 45810 [2024-12-02 06:51:04,540 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 284 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1018 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=964, Invalid=3326, Unknown=0, NotChecked=0, Total=4290 [2024-12-02 06:51:04,541 INFO L435 NwaCegarLoop]: 110 mSDtfsCounter, 1679 mSDsluCounter, 1891 mSDsCounter, 0 mSdLazyCounter, 1739 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1679 SdHoareTripleChecker+Valid, 2001 SdHoareTripleChecker+Invalid, 1770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1739 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-12-02 06:51:04,541 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1679 Valid, 2001 Invalid, 1770 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1739 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-12-02 06:51:04,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45810 states. [2024-12-02 06:51:09,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45810 to 39883. [2024-12-02 06:51:09,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39883 states, 39882 states have (on average 1.1344215435534828) internal successors, (45243), 39882 states have internal predecessors, (45243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:51:09,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39883 states to 39883 states and 45243 transitions. [2024-12-02 06:51:09,227 INFO L78 Accepts]: Start accepts. Automaton has 39883 states and 45243 transitions. Word has length 153 [2024-12-02 06:51:09,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:51:09,227 INFO L471 AbstractCegarLoop]: Abstraction has 39883 states and 45243 transitions. [2024-12-02 06:51:09,227 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 6.382352941176471) internal successors, (217), 34 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:51:09,227 INFO L276 IsEmpty]: Start isEmpty. Operand 39883 states and 45243 transitions. [2024-12-02 06:51:09,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-12-02 06:51:09,232 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:51:09,232 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-12-02 06:51:09,238 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-12-02 06:51:09,432 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-12-02 06:51:09,432 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:51:09,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:51:09,433 INFO L85 PathProgramCache]: Analyzing trace with hash -198221684, now seen corresponding path program 1 times [2024-12-02 06:51:09,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:51:09,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614353847] [2024-12-02 06:51:09,433 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:51:09,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:51:09,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:51:10,054 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 146 proven. 56 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-12-02 06:51:10,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:51:10,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614353847] [2024-12-02 06:51:10,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614353847] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:51:10,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1570984696] [2024-12-02 06:51:10,054 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:51:10,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:51:10,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:51:10,055 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:51:10,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-12-02 06:51:10,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:51:10,199 INFO L256 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-12-02 06:51:10,201 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:51:11,680 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 150 proven. 64 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-12-02 06:51:11,681 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:51:13,350 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 192 proven. 24 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-12-02 06:51:13,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1570984696] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:51:13,350 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:51:13,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16, 14] total 38 [2024-12-02 06:51:13,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531536027] [2024-12-02 06:51:13,350 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:51:13,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-12-02 06:51:13,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:51:13,352 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-12-02 06:51:13,352 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1242, Unknown=0, NotChecked=0, Total=1406 [2024-12-02 06:51:13,352 INFO L87 Difference]: Start difference. First operand 39883 states and 45243 transitions. Second operand has 38 states, 38 states have (on average 8.289473684210526) internal successors, (315), 38 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:51:28,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:51:28,864 INFO L93 Difference]: Finished difference Result 88145 states and 100240 transitions. [2024-12-02 06:51:28,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2024-12-02 06:51:28,865 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 8.289473684210526) internal successors, (315), 38 states have internal predecessors, (315), 0 states have call successors, (0), 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 153 [2024-12-02 06:51:28,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:51:28,906 INFO L225 Difference]: With dead ends: 88145 [2024-12-02 06:51:28,906 INFO L226 Difference]: Without dead ends: 50735 [2024-12-02 06:51:28,920 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 543 GetRequests, 374 SyntacticMatches, 0 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9576 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=4465, Invalid=24605, Unknown=0, NotChecked=0, Total=29070 [2024-12-02 06:51:28,920 INFO L435 NwaCegarLoop]: 233 mSDtfsCounter, 2680 mSDsluCounter, 4595 mSDsCounter, 0 mSdLazyCounter, 3857 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2680 SdHoareTripleChecker+Valid, 4828 SdHoareTripleChecker+Invalid, 3993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 3857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-12-02 06:51:28,920 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2680 Valid, 4828 Invalid, 3993 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 3857 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-12-02 06:51:28,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50735 states. [2024-12-02 06:51:34,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50735 to 42447. [2024-12-02 06:51:34,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42447 states, 42446 states have (on average 1.1292230127691656) internal successors, (47931), 42446 states have internal predecessors, (47931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:51:34,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42447 states to 42447 states and 47931 transitions. [2024-12-02 06:51:34,240 INFO L78 Accepts]: Start accepts. Automaton has 42447 states and 47931 transitions. Word has length 153 [2024-12-02 06:51:34,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:51:34,240 INFO L471 AbstractCegarLoop]: Abstraction has 42447 states and 47931 transitions. [2024-12-02 06:51:34,240 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 8.289473684210526) internal successors, (315), 38 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:51:34,240 INFO L276 IsEmpty]: Start isEmpty. Operand 42447 states and 47931 transitions. [2024-12-02 06:51:34,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-12-02 06:51:34,243 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:51:34,244 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:51:34,251 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-12-02 06:51:34,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-12-02 06:51:34,444 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:51:34,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:51:34,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1769079170, now seen corresponding path program 1 times [2024-12-02 06:51:34,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:51:34,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964271481] [2024-12-02 06:51:34,445 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:51:34,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:51:34,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:51:35,409 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 103 proven. 133 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 06:51:35,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:51:35,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964271481] [2024-12-02 06:51:35,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964271481] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:51:35,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1212343698] [2024-12-02 06:51:35,409 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:51:35,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:51:35,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:51:35,411 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:51:35,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-12-02 06:51:35,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:51:35,567 INFO L256 TraceCheckSpWp]: Trace formula consists of 547 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-12-02 06:51:35,569 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:51:37,384 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 106 proven. 130 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 06:51:37,384 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:51:39,117 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 103 proven. 133 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 06:51:39,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1212343698] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:51:39,117 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:51:39,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 21, 17] total 48 [2024-12-02 06:51:39,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847921286] [2024-12-02 06:51:39,117 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:51:39,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-12-02 06:51:39,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:51:39,118 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-12-02 06:51:39,118 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=250, Invalid=2006, Unknown=0, NotChecked=0, Total=2256 [2024-12-02 06:51:39,118 INFO L87 Difference]: Start difference. First operand 42447 states and 47931 transitions. Second operand has 48 states, 48 states have (on average 6.9375) internal successors, (333), 48 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:51:51,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:51:51,154 INFO L93 Difference]: Finished difference Result 65064 states and 73619 transitions. [2024-12-02 06:51:51,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2024-12-02 06:51:51,154 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 6.9375) internal successors, (333), 48 states have internal predecessors, (333), 0 states have call successors, (0), 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 155 [2024-12-02 06:51:51,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:51:51,192 INFO L225 Difference]: With dead ends: 65064 [2024-12-02 06:51:51,192 INFO L226 Difference]: Without dead ends: 50549 [2024-12-02 06:51:51,200 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 415 GetRequests, 281 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5226 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=3316, Invalid=15044, Unknown=0, NotChecked=0, Total=18360 [2024-12-02 06:51:51,201 INFO L435 NwaCegarLoop]: 235 mSDtfsCounter, 2300 mSDsluCounter, 4056 mSDsCounter, 0 mSdLazyCounter, 4067 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2300 SdHoareTripleChecker+Valid, 4291 SdHoareTripleChecker+Invalid, 4124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 4067 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-12-02 06:51:51,201 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2300 Valid, 4291 Invalid, 4124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 4067 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-12-02 06:51:51,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50549 states. [2024-12-02 06:51:56,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50549 to 42950. [2024-12-02 06:51:56,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42950 states, 42949 states have (on average 1.127709609071224) internal successors, (48434), 42949 states have internal predecessors, (48434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:51:56,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42950 states to 42950 states and 48434 transitions. [2024-12-02 06:51:56,606 INFO L78 Accepts]: Start accepts. Automaton has 42950 states and 48434 transitions. Word has length 155 [2024-12-02 06:51:56,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:51:56,606 INFO L471 AbstractCegarLoop]: Abstraction has 42950 states and 48434 transitions. [2024-12-02 06:51:56,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 6.9375) internal successors, (333), 48 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:51:56,606 INFO L276 IsEmpty]: Start isEmpty. Operand 42950 states and 48434 transitions. [2024-12-02 06:51:56,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-12-02 06:51:56,610 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:51:56,610 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:51:56,617 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-12-02 06:51:56,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2024-12-02 06:51:56,811 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:51:56,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:51:56,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1139419774, now seen corresponding path program 1 times [2024-12-02 06:51:56,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:51:56,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145698785] [2024-12-02 06:51:56,811 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:51:56,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:51:56,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:51:57,498 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 32 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:51:57,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:51:57,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145698785] [2024-12-02 06:51:57,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145698785] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:51:57,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032880892] [2024-12-02 06:51:57,499 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:51:57,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:51:57,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:51:57,500 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:51:57,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-12-02 06:51:57,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:51:57,660 INFO L256 TraceCheckSpWp]: Trace formula consists of 548 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-12-02 06:51:57,662 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:51:59,164 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 45 proven. 197 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:51:59,164 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:52:02,561 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 157 proven. 66 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-12-02 06:52:02,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2032880892] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:52:02,562 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:52:02,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 25, 17] total 58 [2024-12-02 06:52:02,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475894512] [2024-12-02 06:52:02,562 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:52:02,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-12-02 06:52:02,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:52:02,563 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-12-02 06:52:02,563 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=312, Invalid=2994, Unknown=0, NotChecked=0, Total=3306 [2024-12-02 06:52:02,563 INFO L87 Difference]: Start difference. First operand 42950 states and 48434 transitions. Second operand has 58 states, 58 states have (on average 7.396551724137931) internal successors, (429), 58 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:53:12,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:53:12,069 INFO L93 Difference]: Finished difference Result 145821 states and 165598 transitions. [2024-12-02 06:53:12,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 434 states. [2024-12-02 06:53:12,069 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 7.396551724137931) internal successors, (429), 58 states have internal predecessors, (429), 0 states have call successors, (0), 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 155 [2024-12-02 06:53:12,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:53:12,157 INFO L225 Difference]: With dead ends: 145821 [2024-12-02 06:53:12,157 INFO L226 Difference]: Without dead ends: 112412 [2024-12-02 06:53:12,182 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1068 GetRequests, 580 SyntacticMatches, 0 SemanticMatches, 488 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103681 ImplicationChecksByTransitivity, 52.2s TimeCoverageRelationStatistics Valid=35476, Invalid=204134, Unknown=0, NotChecked=0, Total=239610 [2024-12-02 06:53:12,182 INFO L435 NwaCegarLoop]: 218 mSDtfsCounter, 5718 mSDsluCounter, 5248 mSDsCounter, 0 mSdLazyCounter, 5602 mSolverCounterSat, 314 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5718 SdHoareTripleChecker+Valid, 5466 SdHoareTripleChecker+Invalid, 5916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 314 IncrementalHoareTripleChecker+Valid, 5602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-12-02 06:53:12,183 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5718 Valid, 5466 Invalid, 5916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [314 Valid, 5602 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2024-12-02 06:53:12,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112412 states. [2024-12-02 06:53:20,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112412 to 60563. [2024-12-02 06:53:20,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60563 states, 60562 states have (on average 1.1288266569796241) internal successors, (68364), 60562 states have internal predecessors, (68364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:53:20,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60563 states to 60563 states and 68364 transitions. [2024-12-02 06:53:20,596 INFO L78 Accepts]: Start accepts. Automaton has 60563 states and 68364 transitions. Word has length 155 [2024-12-02 06:53:20,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:53:20,596 INFO L471 AbstractCegarLoop]: Abstraction has 60563 states and 68364 transitions. [2024-12-02 06:53:20,596 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 7.396551724137931) internal successors, (429), 58 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:53:20,596 INFO L276 IsEmpty]: Start isEmpty. Operand 60563 states and 68364 transitions. [2024-12-02 06:53:20,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-12-02 06:53:20,599 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:53:20,599 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:53:20,606 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-12-02 06:53:20,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2024-12-02 06:53:20,799 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:53:20,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:53:20,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1798951296, now seen corresponding path program 1 times [2024-12-02 06:53:20,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:53:20,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102946321] [2024-12-02 06:53:20,800 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:53:20,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:53:20,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:53:21,708 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 113 proven. 121 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-02 06:53:21,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:53:21,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102946321] [2024-12-02 06:53:21,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102946321] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:53:21,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672252786] [2024-12-02 06:53:21,709 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:53:21,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:53:21,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:53:21,710 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:53:21,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-12-02 06:53:21,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:53:21,885 INFO L256 TraceCheckSpWp]: Trace formula consists of 547 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-12-02 06:53:21,887 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:53:24,449 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 117 proven. 117 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-02 06:53:24,449 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:53:30,540 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 113 proven. 121 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-02 06:53:30,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1672252786] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:53:30,540 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:53:30,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 25, 21] total 57 [2024-12-02 06:53:30,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638827981] [2024-12-02 06:53:30,540 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:53:30,541 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2024-12-02 06:53:30,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:53:30,541 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2024-12-02 06:53:30,541 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=341, Invalid=2851, Unknown=0, NotChecked=0, Total=3192 [2024-12-02 06:53:30,541 INFO L87 Difference]: Start difference. First operand 60563 states and 68364 transitions. Second operand has 57 states, 57 states have (on average 5.9298245614035086) internal successors, (338), 57 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:54:01,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:54:01,279 INFO L93 Difference]: Finished difference Result 101611 states and 115095 transitions. [2024-12-02 06:54:01,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2024-12-02 06:54:01,280 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 5.9298245614035086) internal successors, (338), 57 states have internal predecessors, (338), 0 states have call successors, (0), 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 155 [2024-12-02 06:54:01,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:54:01,335 INFO L225 Difference]: With dead ends: 101611 [2024-12-02 06:54:01,336 INFO L226 Difference]: Without dead ends: 70056 [2024-12-02 06:54:01,352 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 459 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12186 ImplicationChecksByTransitivity, 18.7s TimeCoverageRelationStatistics Valid=6778, Invalid=28754, Unknown=0, NotChecked=0, Total=35532 [2024-12-02 06:54:01,353 INFO L435 NwaCegarLoop]: 191 mSDtfsCounter, 6159 mSDsluCounter, 4601 mSDsCounter, 0 mSdLazyCounter, 4675 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6159 SdHoareTripleChecker+Valid, 4792 SdHoareTripleChecker+Invalid, 4834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 4675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-12-02 06:54:01,353 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6159 Valid, 4792 Invalid, 4834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 4675 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2024-12-02 06:54:01,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70056 states. [2024-12-02 06:54:10,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70056 to 66142. [2024-12-02 06:54:10,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66142 states, 66141 states have (on average 1.1276515323324412) internal successors, (74584), 66141 states have internal predecessors, (74584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:54:10,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66142 states to 66142 states and 74584 transitions. [2024-12-02 06:54:10,825 INFO L78 Accepts]: Start accepts. Automaton has 66142 states and 74584 transitions. Word has length 155 [2024-12-02 06:54:10,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:54:10,826 INFO L471 AbstractCegarLoop]: Abstraction has 66142 states and 74584 transitions. [2024-12-02 06:54:10,826 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 5.9298245614035086) internal successors, (338), 57 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:54:10,826 INFO L276 IsEmpty]: Start isEmpty. Operand 66142 states and 74584 transitions. [2024-12-02 06:54:10,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-12-02 06:54:10,828 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:54:10,828 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:54:10,835 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-12-02 06:54:11,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2024-12-02 06:54:11,029 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:54:11,029 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:54:11,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1324664224, now seen corresponding path program 1 times [2024-12-02 06:54:11,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:54:11,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859883941] [2024-12-02 06:54:11,029 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:54:11,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:54:11,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:54:12,122 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 125 proven. 107 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-02 06:54:12,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:54:12,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859883941] [2024-12-02 06:54:12,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859883941] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:54:12,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1133568166] [2024-12-02 06:54:12,122 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:54:12,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:54:12,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:54:12,124 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:54:12,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-12-02 06:54:12,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:54:12,292 INFO L256 TraceCheckSpWp]: Trace formula consists of 547 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-12-02 06:54:12,293 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:54:15,405 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 125 proven. 107 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-02 06:54:15,405 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:54:19,043 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 125 proven. 107 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-02 06:54:19,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1133568166] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:54:19,043 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:54:19,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 20, 18] total 51 [2024-12-02 06:54:19,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160362430] [2024-12-02 06:54:19,043 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:54:19,043 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-12-02 06:54:19,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:54:19,044 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-12-02 06:54:19,044 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=291, Invalid=2259, Unknown=0, NotChecked=0, Total=2550 [2024-12-02 06:54:19,044 INFO L87 Difference]: Start difference. First operand 66142 states and 74584 transitions. Second operand has 51 states, 51 states have (on average 6.705882352941177) internal successors, (342), 51 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:54:49,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:54:49,036 INFO L93 Difference]: Finished difference Result 101785 states and 115031 transitions. [2024-12-02 06:54:49,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2024-12-02 06:54:49,036 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 6.705882352941177) internal successors, (342), 51 states have internal predecessors, (342), 0 states have call successors, (0), 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 155 [2024-12-02 06:54:49,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:54:49,118 INFO L225 Difference]: With dead ends: 101785 [2024-12-02 06:54:49,118 INFO L226 Difference]: Without dead ends: 76183 [2024-12-02 06:54:49,137 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 461 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11507 ImplicationChecksByTransitivity, 16.8s TimeCoverageRelationStatistics Valid=6530, Invalid=27142, Unknown=0, NotChecked=0, Total=33672 [2024-12-02 06:54:49,138 INFO L435 NwaCegarLoop]: 210 mSDtfsCounter, 5109 mSDsluCounter, 3770 mSDsCounter, 0 mSdLazyCounter, 3519 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5109 SdHoareTripleChecker+Valid, 3980 SdHoareTripleChecker+Invalid, 3642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 3519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-12-02 06:54:49,138 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5109 Valid, 3980 Invalid, 3642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 3519 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-12-02 06:54:49,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76183 states. [2024-12-02 06:54:59,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76183 to 66735. [2024-12-02 06:54:59,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66735 states, 66734 states have (on average 1.1273863397968051) internal successors, (75235), 66734 states have internal predecessors, (75235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:54:59,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66735 states to 66735 states and 75235 transitions. [2024-12-02 06:54:59,505 INFO L78 Accepts]: Start accepts. Automaton has 66735 states and 75235 transitions. Word has length 155 [2024-12-02 06:54:59,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:54:59,506 INFO L471 AbstractCegarLoop]: Abstraction has 66735 states and 75235 transitions. [2024-12-02 06:54:59,506 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 6.705882352941177) internal successors, (342), 51 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:54:59,506 INFO L276 IsEmpty]: Start isEmpty. Operand 66735 states and 75235 transitions. [2024-12-02 06:54:59,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-12-02 06:54:59,508 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:54:59,508 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:54:59,515 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-12-02 06:54:59,709 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:54:59,709 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:54:59,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:54:59,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1454849712, now seen corresponding path program 1 times [2024-12-02 06:54:59,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:54:59,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802770323] [2024-12-02 06:54:59,709 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:54:59,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:54:59,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:55:00,817 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 63 proven. 179 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:55:00,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:55:00,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802770323] [2024-12-02 06:55:00,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802770323] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:55:00,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131390762] [2024-12-02 06:55:00,817 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:55:00,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:55:00,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:55:00,819 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:55:00,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_015372eb-d1a5-4438-970b-d5529eda1c18/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-12-02 06:55:01,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:55:01,004 INFO L256 TraceCheckSpWp]: Trace formula consists of 551 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-12-02 06:55:01,006 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:55:04,639 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 71 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:55:04,639 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:55:10,570 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 63 proven. 179 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:55:10,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2131390762] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:55:10,570 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:55:10,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 29, 25] total 70 [2024-12-02 06:55:10,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876232055] [2024-12-02 06:55:10,571 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:55:10,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2024-12-02 06:55:10,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:55:10,572 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2024-12-02 06:55:10,572 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=638, Invalid=4192, Unknown=0, NotChecked=0, Total=4830 [2024-12-02 06:55:10,572 INFO L87 Difference]: Start difference. First operand 66735 states and 75235 transitions. Second operand has 70 states, 70 states have (on average 5.9714285714285715) internal successors, (418), 70 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)