./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.ufo.BOUNDED-6.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_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/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_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/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_e72b5e2f-9963-441b-9f1a-21b815db92af/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 76982ccfa15d5420010caf48ff31900a394710bc42d46403e291e5b0b2cbfb5b --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 08:42:43,136 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 08:42:43,203 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 08:42:43,208 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 08:42:43,208 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 08:42:43,233 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 08:42:43,233 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 08:42:43,233 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 08:42:43,234 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 08:42:43,234 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 08:42:43,234 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 08:42:43,234 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 08:42:43,234 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 08:42:43,234 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 08:42:43,235 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 08:42:43,235 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 08:42:43,235 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 08:42:43,235 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 08:42:43,235 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 08:42:43,235 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 08:42:43,235 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 08:42:43,235 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 08:42:43,235 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 08:42:43,235 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 08:42:43,236 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 08:42:43,236 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 08:42:43,236 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 08:42:43,236 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 08:42:43,236 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 08:42:43,236 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 08:42:43,236 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 08:42:43,236 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 08:42:43,236 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 08:42:43,236 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 08:42:43,236 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 08:42:43,237 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 08:42:43,237 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 08:42:43,237 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 08:42:43,237 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 08:42:43,237 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 08:42:43,237 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 08:42:43,237 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 08:42:43,237 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 08:42:43,237 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 08:42:43,237 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 08:42:43,237 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 08:42:43,237 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 08:42:43,238 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 08:42:43,238 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_e72b5e2f-9963-441b-9f1a-21b815db92af/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 -> 76982ccfa15d5420010caf48ff31900a394710bc42d46403e291e5b0b2cbfb5b [2024-12-02 08:42:43,484 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 08:42:43,493 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 08:42:43,496 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 08:42:43,497 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 08:42:43,497 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 08:42:43,499 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c [2024-12-02 08:42:46,162 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/data/ccdc369ef/60d6ca31e6934ecba09677491ae6dde6/FLAG59d6cf166 [2024-12-02 08:42:46,425 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 08:42:46,426 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c [2024-12-02 08:42:46,435 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/data/ccdc369ef/60d6ca31e6934ecba09677491ae6dde6/FLAG59d6cf166 [2024-12-02 08:42:46,742 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/data/ccdc369ef/60d6ca31e6934ecba09677491ae6dde6 [2024-12-02 08:42:46,745 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 08:42:46,746 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 08:42:46,747 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 08:42:46,747 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 08:42:46,750 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 08:42:46,751 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:42:46" (1/1) ... [2024-12-02 08:42:46,752 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6431aeb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:42:46, skipping insertion in model container [2024-12-02 08:42:46,752 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:42:46" (1/1) ... [2024-12-02 08:42:46,771 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 08:42:46,946 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_e72b5e2f-9963-441b-9f1a-21b815db92af/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c[6803,6816] [2024-12-02 08:42:46,949 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 08:42:46,957 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 08:42:46,992 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_e72b5e2f-9963-441b-9f1a-21b815db92af/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c[6803,6816] [2024-12-02 08:42:46,992 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 08:42:47,007 INFO L204 MainTranslator]: Completed translation [2024-12-02 08:42:47,008 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:42:47 WrapperNode [2024-12-02 08:42:47,008 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 08:42:47,009 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 08:42:47,009 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 08:42:47,009 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 08:42:47,015 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:42:47" (1/1) ... [2024-12-02 08:42:47,023 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:42:47" (1/1) ... [2024-12-02 08:42:47,045 INFO L138 Inliner]: procedures = 21, calls = 13, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 248 [2024-12-02 08:42:47,045 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 08:42:47,045 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 08:42:47,045 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 08:42:47,046 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 08:42:47,055 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:42:47" (1/1) ... [2024-12-02 08:42:47,055 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:42:47" (1/1) ... [2024-12-02 08:42:47,057 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:42:47" (1/1) ... [2024-12-02 08:42:47,069 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 08:42:47,070 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:42:47" (1/1) ... [2024-12-02 08:42:47,070 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:42:47" (1/1) ... [2024-12-02 08:42:47,075 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:42:47" (1/1) ... [2024-12-02 08:42:47,076 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:42:47" (1/1) ... [2024-12-02 08:42:47,079 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:42:47" (1/1) ... [2024-12-02 08:42:47,080 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:42:47" (1/1) ... [2024-12-02 08:42:47,081 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:42:47" (1/1) ... [2024-12-02 08:42:47,083 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 08:42:47,083 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 08:42:47,084 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 08:42:47,084 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 08:42:47,084 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:42:47" (1/1) ... [2024-12-02 08:42:47,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 08:42:47,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:42:47,115 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 08:42:47,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 08:42:47,145 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 08:42:47,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 08:42:47,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 08:42:47,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 08:42:47,220 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 08:42:47,221 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 08:42:47,530 INFO L? ?]: Removed 31 outVars from TransFormulas that were not future-live. [2024-12-02 08:42:47,531 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 08:42:47,541 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 08:42:47,541 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-12-02 08:42:47,541 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:42:47 BoogieIcfgContainer [2024-12-02 08:42:47,541 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 08:42:47,543 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 08:42:47,544 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 08:42:47,548 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 08:42:47,548 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 08:42:46" (1/3) ... [2024-12-02 08:42:47,549 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6894db78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:42:47, skipping insertion in model container [2024-12-02 08:42:47,549 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:42:47" (2/3) ... [2024-12-02 08:42:47,549 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6894db78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:42:47, skipping insertion in model container [2024-12-02 08:42:47,549 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:42:47" (3/3) ... [2024-12-02 08:42:47,551 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c [2024-12-02 08:42:47,566 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 08:42:47,568 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c that has 1 procedures, 68 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 08:42:47,615 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 08:42:47,627 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;@759f065c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 08:42:47,627 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 08:42:47,631 INFO L276 IsEmpty]: Start isEmpty. Operand has 68 states, 66 states have (on average 1.696969696969697) internal successors, (112), 67 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:42:47,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-12-02 08:42:47,637 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:42:47,637 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] [2024-12-02 08:42:47,638 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:42:47,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:42:47,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1887363766, now seen corresponding path program 1 times [2024-12-02 08:42:47,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:42:47,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259043810] [2024-12-02 08:42:47,651 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:42:47,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:42:47,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:42:47,983 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 08:42:47,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:42:47,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259043810] [2024-12-02 08:42:47,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259043810] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:42:47,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:42:47,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 08:42:47,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070012437] [2024-12-02 08:42:47,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:42:47,990 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 08:42:47,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:42:48,005 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 08:42:48,006 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:42:48,008 INFO L87 Difference]: Start difference. First operand has 68 states, 66 states have (on average 1.696969696969697) internal successors, (112), 67 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:42:48,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:42:48,100 INFO L93 Difference]: Finished difference Result 158 states and 256 transitions. [2024-12-02 08:42:48,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 08:42:48,102 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2024-12-02 08:42:48,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:42:48,110 INFO L225 Difference]: With dead ends: 158 [2024-12-02 08:42:48,110 INFO L226 Difference]: Without dead ends: 105 [2024-12-02 08:42:48,113 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 08:42:48,115 INFO L435 NwaCegarLoop]: 105 mSDtfsCounter, 64 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 08:42:48,116 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 395 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 08:42:48,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-12-02 08:42:48,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 64. [2024-12-02 08:42:48,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.3968253968253967) internal successors, (88), 63 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:42:48,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 88 transitions. [2024-12-02 08:42:48,142 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 88 transitions. Word has length 26 [2024-12-02 08:42:48,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:42:48,142 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 88 transitions. [2024-12-02 08:42:48,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:42:48,143 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 88 transitions. [2024-12-02 08:42:48,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-12-02 08:42:48,144 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:42:48,144 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 08:42:48,144 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 08:42:48,144 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:42:48,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:42:48,145 INFO L85 PathProgramCache]: Analyzing trace with hash 285491776, now seen corresponding path program 1 times [2024-12-02 08:42:48,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:42:48,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296944379] [2024-12-02 08:42:48,145 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:42:48,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:42:48,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:42:48,301 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 08:42:48,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:42:48,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296944379] [2024-12-02 08:42:48,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296944379] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:42:48,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:42:48,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 08:42:48,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20876345] [2024-12-02 08:42:48,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:42:48,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 08:42:48,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:42:48,304 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 08:42:48,304 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:42:48,304 INFO L87 Difference]: Start difference. First operand 64 states and 88 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 08:42:48,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:42:48,399 INFO L93 Difference]: Finished difference Result 228 states and 348 transitions. [2024-12-02 08:42:48,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 08:42:48,400 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 08:42:48,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:42:48,401 INFO L225 Difference]: With dead ends: 228 [2024-12-02 08:42:48,402 INFO L226 Difference]: Without dead ends: 187 [2024-12-02 08:42:48,402 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 08:42:48,403 INFO L435 NwaCegarLoop]: 84 mSDtfsCounter, 367 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 08:42:48,403 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [367 Valid, 327 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 08:42:48,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2024-12-02 08:42:48,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 103. [2024-12-02 08:42:48,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 102 states have (on average 1.4705882352941178) internal successors, (150), 102 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:42:48,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 150 transitions. [2024-12-02 08:42:48,416 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 150 transitions. Word has length 42 [2024-12-02 08:42:48,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:42:48,417 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 150 transitions. [2024-12-02 08:42:48,417 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 08:42:48,417 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 150 transitions. [2024-12-02 08:42:48,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-12-02 08:42:48,418 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:42:48,418 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 08:42:48,418 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 08:42:48,418 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:42:48,419 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:42:48,419 INFO L85 PathProgramCache]: Analyzing trace with hash -123012997, now seen corresponding path program 1 times [2024-12-02 08:42:48,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:42:48,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402968930] [2024-12-02 08:42:48,419 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:42:48,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:42:48,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:42:48,658 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 08:42:48,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:42:48,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402968930] [2024-12-02 08:42:48,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402968930] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:42:48,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:42:48,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 08:42:48,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409453984] [2024-12-02 08:42:48,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:42:48,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 08:42:48,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:42:48,660 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 08:42:48,660 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:42:48,660 INFO L87 Difference]: Start difference. First operand 103 states and 150 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 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 08:42:48,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:42:48,689 INFO L93 Difference]: Finished difference Result 111 states and 159 transitions. [2024-12-02 08:42:48,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 08:42:48,689 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 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 08:42:48,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:42:48,690 INFO L225 Difference]: With dead ends: 111 [2024-12-02 08:42:48,690 INFO L226 Difference]: Without dead ends: 109 [2024-12-02 08:42:48,691 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 08:42:48,691 INFO L435 NwaCegarLoop]: 85 mSDtfsCounter, 0 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 332 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 08:42:48,692 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 332 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:42:48,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-12-02 08:42:48,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2024-12-02 08:42:48,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 108 states have (on average 1.4444444444444444) internal successors, (156), 108 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:42:48,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 156 transitions. [2024-12-02 08:42:48,700 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 156 transitions. Word has length 43 [2024-12-02 08:42:48,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:42:48,700 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 156 transitions. [2024-12-02 08:42:48,701 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 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 08:42:48,701 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 156 transitions. [2024-12-02 08:42:48,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-12-02 08:42:48,702 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:42:48,702 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 08:42:48,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 08:42:48,702 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:42:48,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:42:48,703 INFO L85 PathProgramCache]: Analyzing trace with hash 534142840, now seen corresponding path program 1 times [2024-12-02 08:42:48,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:42:48,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084702992] [2024-12-02 08:42:48,703 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:42:48,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:42:48,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:42:48,779 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 08:42:48,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:42:48,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084702992] [2024-12-02 08:42:48,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084702992] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:42:48,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:42:48,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 08:42:48,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355048518] [2024-12-02 08:42:48,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:42:48,780 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 08:42:48,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:42:48,780 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 08:42:48,781 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:42:48,781 INFO L87 Difference]: Start difference. First operand 109 states and 156 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 08:42:48,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:42:48,800 INFO L93 Difference]: Finished difference Result 266 states and 397 transitions. [2024-12-02 08:42:48,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 08:42:48,801 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 08:42:48,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:42:48,802 INFO L225 Difference]: With dead ends: 266 [2024-12-02 08:42:48,802 INFO L226 Difference]: Without dead ends: 180 [2024-12-02 08:42:48,802 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 08:42:48,803 INFO L435 NwaCegarLoop]: 88 mSDtfsCounter, 37 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:42:48,803 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 150 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:42:48,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2024-12-02 08:42:48,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 178. [2024-12-02 08:42:48,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 177 states have (on average 1.4745762711864407) internal successors, (261), 177 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:42:48,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 261 transitions. [2024-12-02 08:42:48,815 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 261 transitions. Word has length 44 [2024-12-02 08:42:48,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:42:48,815 INFO L471 AbstractCegarLoop]: Abstraction has 178 states and 261 transitions. [2024-12-02 08:42:48,815 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 08:42:48,815 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 261 transitions. [2024-12-02 08:42:48,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-12-02 08:42:48,816 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:42:48,817 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 08:42:48,817 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 08:42:48,817 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:42:48,817 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:42:48,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1933647607, now seen corresponding path program 1 times [2024-12-02 08:42:48,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:42:48,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810654664] [2024-12-02 08:42:48,818 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:42:48,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:42:48,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:42:48,879 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 08:42:48,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:42:48,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810654664] [2024-12-02 08:42:48,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810654664] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:42:48,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:42:48,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 08:42:48,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032334913] [2024-12-02 08:42:48,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:42:48,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 08:42:48,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:42:48,881 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 08:42:48,881 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:42:48,881 INFO L87 Difference]: Start difference. First operand 178 states and 261 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 08:42:48,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:42:48,904 INFO L93 Difference]: Finished difference Result 337 states and 503 transitions. [2024-12-02 08:42:48,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 08:42:48,905 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 08:42:48,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:42:48,906 INFO L225 Difference]: With dead ends: 337 [2024-12-02 08:42:48,906 INFO L226 Difference]: Without dead ends: 251 [2024-12-02 08:42:48,907 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 08:42:48,908 INFO L435 NwaCegarLoop]: 131 mSDtfsCounter, 52 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 193 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 08:42:48,908 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 193 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:42:48,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2024-12-02 08:42:48,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 249. [2024-12-02 08:42:48,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 248 states have (on average 1.4758064516129032) internal successors, (366), 248 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:42:48,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 366 transitions. [2024-12-02 08:42:48,922 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 366 transitions. Word has length 44 [2024-12-02 08:42:48,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:42:48,922 INFO L471 AbstractCegarLoop]: Abstraction has 249 states and 366 transitions. [2024-12-02 08:42:48,922 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 08:42:48,922 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 366 transitions. [2024-12-02 08:42:48,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-12-02 08:42:48,923 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:42:48,923 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 08:42:48,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 08:42:48,924 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:42:48,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:42:48,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1655551852, now seen corresponding path program 1 times [2024-12-02 08:42:48,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:42:48,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292782778] [2024-12-02 08:42:48,924 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:42:48,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:42:48,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:42:48,995 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 08:42:48,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:42:48,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292782778] [2024-12-02 08:42:48,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292782778] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:42:48,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:42:48,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 08:42:48,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952282358] [2024-12-02 08:42:48,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:42:48,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 08:42:48,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:42:48,997 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 08:42:48,997 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:42:48,997 INFO L87 Difference]: Start difference. First operand 249 states and 366 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 08:42:49,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:42:49,026 INFO L93 Difference]: Finished difference Result 647 states and 962 transitions. [2024-12-02 08:42:49,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 08:42:49,026 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 08:42:49,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:42:49,028 INFO L225 Difference]: With dead ends: 647 [2024-12-02 08:42:49,028 INFO L226 Difference]: Without dead ends: 424 [2024-12-02 08:42:49,029 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 08:42:49,030 INFO L435 NwaCegarLoop]: 110 mSDtfsCounter, 44 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 180 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 08:42:49,030 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 180 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:42:49,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2024-12-02 08:42:49,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 422. [2024-12-02 08:42:49,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 421 states have (on average 1.4608076009501187) internal successors, (615), 421 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:42:49,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 615 transitions. [2024-12-02 08:42:49,048 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 615 transitions. Word has length 45 [2024-12-02 08:42:49,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:42:49,048 INFO L471 AbstractCegarLoop]: Abstraction has 422 states and 615 transitions. [2024-12-02 08:42:49,048 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 08:42:49,048 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 615 transitions. [2024-12-02 08:42:49,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-12-02 08:42:49,049 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:42:49,049 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 08:42:49,049 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 08:42:49,049 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:42:49,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:42:49,050 INFO L85 PathProgramCache]: Analyzing trace with hash 838726516, now seen corresponding path program 1 times [2024-12-02 08:42:49,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:42:49,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84167999] [2024-12-02 08:42:49,050 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:42:49,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:42:49,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:42:49,106 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 08:42:49,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:42:49,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84167999] [2024-12-02 08:42:49,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84167999] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:42:49,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:42:49,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 08:42:49,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008984088] [2024-12-02 08:42:49,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:42:49,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 08:42:49,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:42:49,107 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 08:42:49,107 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:42:49,107 INFO L87 Difference]: Start difference. First operand 422 states and 615 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 08:42:49,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:42:49,140 INFO L93 Difference]: Finished difference Result 1118 states and 1625 transitions. [2024-12-02 08:42:49,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 08:42:49,140 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 08:42:49,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:42:49,143 INFO L225 Difference]: With dead ends: 1118 [2024-12-02 08:42:49,143 INFO L226 Difference]: Without dead ends: 722 [2024-12-02 08:42:49,145 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 08:42:49,145 INFO L435 NwaCegarLoop]: 127 mSDtfsCounter, 48 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 193 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 08:42:49,146 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 193 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:42:49,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states. [2024-12-02 08:42:49,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 720. [2024-12-02 08:42:49,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 720 states, 719 states have (on average 1.4228094575799721) internal successors, (1023), 719 states have internal predecessors, (1023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:42:49,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 720 states to 720 states and 1023 transitions. [2024-12-02 08:42:49,176 INFO L78 Accepts]: Start accepts. Automaton has 720 states and 1023 transitions. Word has length 45 [2024-12-02 08:42:49,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:42:49,177 INFO L471 AbstractCegarLoop]: Abstraction has 720 states and 1023 transitions. [2024-12-02 08:42:49,177 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 08:42:49,177 INFO L276 IsEmpty]: Start isEmpty. Operand 720 states and 1023 transitions. [2024-12-02 08:42:49,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-12-02 08:42:49,178 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:42:49,179 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:42:49,179 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 08:42:49,179 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:42:49,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:42:49,179 INFO L85 PathProgramCache]: Analyzing trace with hash -760093606, now seen corresponding path program 1 times [2024-12-02 08:42:49,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:42:49,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601688915] [2024-12-02 08:42:49,180 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:42:49,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:42:49,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:42:49,301 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:42:49,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:42:49,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601688915] [2024-12-02 08:42:49,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601688915] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:42:49,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:42:49,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 08:42:49,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536156131] [2024-12-02 08:42:49,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:42:49,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 08:42:49,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:42:49,302 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 08:42:49,302 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:42:49,302 INFO L87 Difference]: Start difference. First operand 720 states and 1023 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 08:42:49,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:42:49,329 INFO L93 Difference]: Finished difference Result 1416 states and 2021 transitions. [2024-12-02 08:42:49,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 08:42:49,330 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 08:42:49,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:42:49,332 INFO L225 Difference]: With dead ends: 1416 [2024-12-02 08:42:49,332 INFO L226 Difference]: Without dead ends: 722 [2024-12-02 08:42:49,333 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 08:42:49,334 INFO L435 NwaCegarLoop]: 112 mSDtfsCounter, 41 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 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 08:42:49,334 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [41 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 08:42:49,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states. [2024-12-02 08:42:49,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 720. [2024-12-02 08:42:49,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 720 states, 719 states have (on average 1.4061196105702365) internal successors, (1011), 719 states have internal predecessors, (1011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:42:49,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 720 states to 720 states and 1011 transitions. [2024-12-02 08:42:49,371 INFO L78 Accepts]: Start accepts. Automaton has 720 states and 1011 transitions. Word has length 64 [2024-12-02 08:42:49,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:42:49,372 INFO L471 AbstractCegarLoop]: Abstraction has 720 states and 1011 transitions. [2024-12-02 08:42:49,372 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 08:42:49,372 INFO L276 IsEmpty]: Start isEmpty. Operand 720 states and 1011 transitions. [2024-12-02 08:42:49,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-12-02 08:42:49,373 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:42:49,373 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:42:49,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 08:42:49,373 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:42:49,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:42:49,374 INFO L85 PathProgramCache]: Analyzing trace with hash 2049850201, now seen corresponding path program 1 times [2024-12-02 08:42:49,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:42:49,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763066282] [2024-12-02 08:42:49,374 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:42:49,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:42:49,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:42:49,452 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:42:49,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:42:49,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763066282] [2024-12-02 08:42:49,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763066282] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:42:49,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:42:49,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 08:42:49,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547843287] [2024-12-02 08:42:49,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:42:49,453 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 08:42:49,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:42:49,454 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 08:42:49,454 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:42:49,454 INFO L87 Difference]: Start difference. First operand 720 states and 1011 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 08:42:49,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:42:49,476 INFO L93 Difference]: Finished difference Result 1070 states and 1505 transitions. [2024-12-02 08:42:49,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 08:42:49,476 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 08:42:49,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:42:49,479 INFO L225 Difference]: With dead ends: 1070 [2024-12-02 08:42:49,479 INFO L226 Difference]: Without dead ends: 376 [2024-12-02 08:42:49,480 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 08:42:49,480 INFO L435 NwaCegarLoop]: 103 mSDtfsCounter, 35 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 166 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 08:42:49,481 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 166 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:42:49,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2024-12-02 08:42:49,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 374. [2024-12-02 08:42:49,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 373 states have (on average 1.3753351206434317) internal successors, (513), 373 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:42:49,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 513 transitions. [2024-12-02 08:42:49,491 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 513 transitions. Word has length 64 [2024-12-02 08:42:49,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:42:49,492 INFO L471 AbstractCegarLoop]: Abstraction has 374 states and 513 transitions. [2024-12-02 08:42:49,492 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 08:42:49,492 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 513 transitions. [2024-12-02 08:42:49,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-12-02 08:42:49,492 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:42:49,493 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 08:42:49,493 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 08:42:49,493 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:42:49,493 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:42:49,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1858868776, now seen corresponding path program 1 times [2024-12-02 08:42:49,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:42:49,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581175141] [2024-12-02 08:42:49,494 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:42:49,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:42:49,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:42:49,640 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 08:42:49,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:42:49,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581175141] [2024-12-02 08:42:49,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581175141] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:42:49,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715694197] [2024-12-02 08:42:49,641 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:42:49,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:42:49,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:42:49,643 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:42:49,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 08:42:49,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:42:49,775 INFO L256 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-12-02 08:42:49,782 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:42:50,185 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:42:50,185 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:42:50,806 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:42:50,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1715694197] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:42:50,806 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 08:42:50,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 8] total 14 [2024-12-02 08:42:50,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719861530] [2024-12-02 08:42:50,807 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 08:42:50,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-12-02 08:42:50,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:42:50,808 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-12-02 08:42:50,808 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2024-12-02 08:42:50,809 INFO L87 Difference]: Start difference. First operand 374 states and 513 transitions. Second operand has 14 states, 14 states have (on average 12.928571428571429) internal successors, (181), 14 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 08:42:51,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:42:51,663 INFO L93 Difference]: Finished difference Result 1682 states and 2341 transitions. [2024-12-02 08:42:51,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-12-02 08:42:51,664 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 12.928571428571429) internal successors, (181), 14 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 08:42:51,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:42:51,671 INFO L225 Difference]: With dead ends: 1682 [2024-12-02 08:42:51,671 INFO L226 Difference]: Without dead ends: 1440 [2024-12-02 08:42:51,673 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 548 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=400, Invalid=1492, Unknown=0, NotChecked=0, Total=1892 [2024-12-02 08:42:51,673 INFO L435 NwaCegarLoop]: 128 mSDtfsCounter, 784 mSDsluCounter, 909 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 784 SdHoareTripleChecker+Valid, 1037 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 08:42:51,674 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [784 Valid, 1037 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 08:42:51,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1440 states. [2024-12-02 08:42:51,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1440 to 1320. [2024-12-02 08:42:51,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1320 states, 1319 states have (on average 1.3790750568612584) internal successors, (1819), 1319 states have internal predecessors, (1819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:42:51,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1320 states to 1320 states and 1819 transitions. [2024-12-02 08:42:51,746 INFO L78 Accepts]: Start accepts. Automaton has 1320 states and 1819 transitions. Word has length 64 [2024-12-02 08:42:51,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:42:51,747 INFO L471 AbstractCegarLoop]: Abstraction has 1320 states and 1819 transitions. [2024-12-02 08:42:51,747 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 12.928571428571429) internal successors, (181), 14 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 08:42:51,747 INFO L276 IsEmpty]: Start isEmpty. Operand 1320 states and 1819 transitions. [2024-12-02 08:42:51,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-12-02 08:42:51,747 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:42:51,748 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:42:51,757 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 08:42:51,948 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-12-02 08:42:51,948 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:42:51,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:42:51,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1946728562, now seen corresponding path program 1 times [2024-12-02 08:42:51,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:42:51,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412022735] [2024-12-02 08:42:51,949 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:42:51,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:42:51,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:42:52,058 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-12-02 08:42:52,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:42:52,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412022735] [2024-12-02 08:42:52,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412022735] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:42:52,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:42:52,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 08:42:52,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049085224] [2024-12-02 08:42:52,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:42:52,059 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 08:42:52,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:42:52,059 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 08:42:52,059 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:42:52,059 INFO L87 Difference]: Start difference. First operand 1320 states and 1819 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 08:42:52,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:42:52,147 INFO L93 Difference]: Finished difference Result 3268 states and 4541 transitions. [2024-12-02 08:42:52,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 08:42:52,148 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 65 [2024-12-02 08:42:52,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:42:52,157 INFO L225 Difference]: With dead ends: 3268 [2024-12-02 08:42:52,157 INFO L226 Difference]: Without dead ends: 2584 [2024-12-02 08:42:52,158 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 08:42:52,159 INFO L435 NwaCegarLoop]: 151 mSDtfsCounter, 229 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:42:52,159 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 360 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:42:52,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2584 states. [2024-12-02 08:42:52,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2584 to 1960. [2024-12-02 08:42:52,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1960 states, 1959 states have (on average 1.375701888718734) internal successors, (2695), 1959 states have internal predecessors, (2695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:42:52,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1960 states to 1960 states and 2695 transitions. [2024-12-02 08:42:52,231 INFO L78 Accepts]: Start accepts. Automaton has 1960 states and 2695 transitions. Word has length 65 [2024-12-02 08:42:52,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:42:52,231 INFO L471 AbstractCegarLoop]: Abstraction has 1960 states and 2695 transitions. [2024-12-02 08:42:52,231 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 08:42:52,231 INFO L276 IsEmpty]: Start isEmpty. Operand 1960 states and 2695 transitions. [2024-12-02 08:42:52,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-12-02 08:42:52,232 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:42:52,232 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:42:52,232 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 08:42:52,232 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:42:52,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:42:52,232 INFO L85 PathProgramCache]: Analyzing trace with hash -168616784, now seen corresponding path program 1 times [2024-12-02 08:42:52,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:42:52,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111813347] [2024-12-02 08:42:52,232 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:42:52,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:42:52,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:42:52,330 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-12-02 08:42:52,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:42:52,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111813347] [2024-12-02 08:42:52,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111813347] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:42:52,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:42:52,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 08:42:52,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324888143] [2024-12-02 08:42:52,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:42:52,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 08:42:52,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:42:52,331 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 08:42:52,331 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:42:52,331 INFO L87 Difference]: Start difference. First operand 1960 states and 2695 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:42:52,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:42:52,436 INFO L93 Difference]: Finished difference Result 3908 states and 5417 transitions. [2024-12-02 08:42:52,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 08:42:52,437 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 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 08:42:52,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:42:52,447 INFO L225 Difference]: With dead ends: 3908 [2024-12-02 08:42:52,447 INFO L226 Difference]: Without dead ends: 3224 [2024-12-02 08:42:52,448 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 08:42:52,449 INFO L435 NwaCegarLoop]: 153 mSDtfsCounter, 226 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 400 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 08:42:52,449 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 400 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:42:52,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3224 states. [2024-12-02 08:42:52,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3224 to 2600. [2024-12-02 08:42:52,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2600 states, 2599 states have (on average 1.3739899961523663) internal successors, (3571), 2599 states have internal predecessors, (3571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:42:52,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2600 states to 2600 states and 3571 transitions. [2024-12-02 08:42:52,540 INFO L78 Accepts]: Start accepts. Automaton has 2600 states and 3571 transitions. Word has length 65 [2024-12-02 08:42:52,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:42:52,540 INFO L471 AbstractCegarLoop]: Abstraction has 2600 states and 3571 transitions. [2024-12-02 08:42:52,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:42:52,540 INFO L276 IsEmpty]: Start isEmpty. Operand 2600 states and 3571 transitions. [2024-12-02 08:42:52,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-12-02 08:42:52,541 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:42:52,541 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, 1] [2024-12-02 08:42:52,541 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-02 08:42:52,541 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:42:52,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:42:52,542 INFO L85 PathProgramCache]: Analyzing trace with hash 291660367, now seen corresponding path program 1 times [2024-12-02 08:42:52,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:42:52,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425004214] [2024-12-02 08:42:52,542 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:42:52,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:42:52,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:42:52,652 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 08:42:52,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:42:52,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425004214] [2024-12-02 08:42:52,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425004214] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:42:52,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:42:52,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 08:42:52,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732207710] [2024-12-02 08:42:52,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:42:52,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 08:42:52,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:42:52,654 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 08:42:52,654 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:42:52,654 INFO L87 Difference]: Start difference. First operand 2600 states and 3571 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:42:52,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:42:52,735 INFO L93 Difference]: Finished difference Result 4388 states and 6061 transitions. [2024-12-02 08:42:52,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 08:42:52,736 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 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 08:42:52,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:42:52,743 INFO L225 Difference]: With dead ends: 4388 [2024-12-02 08:42:52,743 INFO L226 Difference]: Without dead ends: 3806 [2024-12-02 08:42:52,745 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 08:42:52,745 INFO L435 NwaCegarLoop]: 150 mSDtfsCounter, 222 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 365 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 08:42:52,745 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 365 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:42:52,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3806 states. [2024-12-02 08:42:52,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3806 to 3182. [2024-12-02 08:42:52,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3182 states, 3181 states have (on average 1.3715812637535367) internal successors, (4363), 3181 states have internal predecessors, (4363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:42:52,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3182 states to 3182 states and 4363 transitions. [2024-12-02 08:42:52,818 INFO L78 Accepts]: Start accepts. Automaton has 3182 states and 4363 transitions. Word has length 65 [2024-12-02 08:42:52,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:42:52,818 INFO L471 AbstractCegarLoop]: Abstraction has 3182 states and 4363 transitions. [2024-12-02 08:42:52,818 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:42:52,818 INFO L276 IsEmpty]: Start isEmpty. Operand 3182 states and 4363 transitions. [2024-12-02 08:42:52,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-12-02 08:42:52,818 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:42:52,819 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:42:52,819 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 08:42:52,819 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:42:52,819 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:42:52,819 INFO L85 PathProgramCache]: Analyzing trace with hash 54523587, now seen corresponding path program 1 times [2024-12-02 08:42:52,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:42:52,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161837730] [2024-12-02 08:42:52,819 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:42:52,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:42:52,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:42:52,876 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 08:42:52,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:42:52,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161837730] [2024-12-02 08:42:52,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161837730] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:42:52,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:42:52,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 08:42:52,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409252900] [2024-12-02 08:42:52,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:42:52,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 08:42:52,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:42:52,878 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 08:42:52,878 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:42:52,878 INFO L87 Difference]: Start difference. First operand 3182 states and 4363 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 08:42:52,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:42:52,910 INFO L93 Difference]: Finished difference Result 4623 states and 6314 transitions. [2024-12-02 08:42:52,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 08:42:52,910 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 08:42:52,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:42:52,914 INFO L225 Difference]: With dead ends: 4623 [2024-12-02 08:42:52,914 INFO L226 Difference]: Without dead ends: 1467 [2024-12-02 08:42:52,916 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 08:42:52,916 INFO L435 NwaCegarLoop]: 95 mSDtfsCounter, 21 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 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 08:42:52,916 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21 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 08:42:52,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1467 states. [2024-12-02 08:42:52,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1467 to 1165. [2024-12-02 08:42:52,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1165 states, 1164 states have (on average 1.3625429553264605) internal successors, (1586), 1164 states have internal predecessors, (1586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:42:52,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1165 states to 1165 states and 1586 transitions. [2024-12-02 08:42:52,942 INFO L78 Accepts]: Start accepts. Automaton has 1165 states and 1586 transitions. Word has length 68 [2024-12-02 08:42:52,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:42:52,942 INFO L471 AbstractCegarLoop]: Abstraction has 1165 states and 1586 transitions. [2024-12-02 08:42:52,942 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 08:42:52,942 INFO L276 IsEmpty]: Start isEmpty. Operand 1165 states and 1586 transitions. [2024-12-02 08:42:52,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-12-02 08:42:52,943 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:42:52,943 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, 1, 1, 1, 1] [2024-12-02 08:42:52,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-02 08:42:52,943 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:42:52,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:42:52,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1659447100, now seen corresponding path program 1 times [2024-12-02 08:42:52,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:42:52,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558248767] [2024-12-02 08:42:52,944 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:42:52,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:42:52,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:42:53,445 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:42:53,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:42:53,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558248767] [2024-12-02 08:42:53,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558248767] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:42:53,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688312098] [2024-12-02 08:42:53,445 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:42:53,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:42:53,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:42:53,448 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:42:53,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 08:42:53,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:42:53,552 INFO L256 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-12-02 08:42:53,554 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:42:53,992 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:42:53,992 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:42:54,739 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:42:54,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [688312098] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:42:54,739 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 08:42:54,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2024-12-02 08:42:54,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741942813] [2024-12-02 08:42:54,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 08:42:54,740 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-12-02 08:42:54,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:42:54,740 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-12-02 08:42:54,740 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2024-12-02 08:42:54,741 INFO L87 Difference]: Start difference. First operand 1165 states and 1586 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 08:42:55,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:42:55,275 INFO L93 Difference]: Finished difference Result 3716 states and 5099 transitions. [2024-12-02 08:42:55,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-12-02 08:42:55,276 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 08:42:55,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:42:55,282 INFO L225 Difference]: With dead ends: 3716 [2024-12-02 08:42:55,282 INFO L226 Difference]: Without dead ends: 2645 [2024-12-02 08:42:55,284 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=275, Invalid=781, Unknown=0, NotChecked=0, Total=1056 [2024-12-02 08:42:55,285 INFO L435 NwaCegarLoop]: 73 mSDtfsCounter, 782 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 782 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 08:42:55,285 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [782 Valid, 550 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 08:42:55,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2645 states. [2024-12-02 08:42:55,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2645 to 2374. [2024-12-02 08:42:55,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2374 states, 2373 states have (on average 1.3392330383480826) internal successors, (3178), 2373 states have internal predecessors, (3178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:42:55,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2374 states to 2374 states and 3178 transitions. [2024-12-02 08:42:55,350 INFO L78 Accepts]: Start accepts. Automaton has 2374 states and 3178 transitions. Word has length 68 [2024-12-02 08:42:55,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:42:55,350 INFO L471 AbstractCegarLoop]: Abstraction has 2374 states and 3178 transitions. [2024-12-02 08:42:55,350 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 08:42:55,350 INFO L276 IsEmpty]: Start isEmpty. Operand 2374 states and 3178 transitions. [2024-12-02 08:42:55,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-12-02 08:42:55,351 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:42:55,351 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, 1, 1, 1, 1] [2024-12-02 08:42:55,357 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 08:42:55,552 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-12-02 08:42:55,552 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:42:55,552 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:42:55,552 INFO L85 PathProgramCache]: Analyzing trace with hash 520174850, now seen corresponding path program 1 times [2024-12-02 08:42:55,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:42:55,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123796720] [2024-12-02 08:42:55,553 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:42:55,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:42:55,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:42:55,888 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:42:55,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:42:55,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123796720] [2024-12-02 08:42:55,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123796720] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:42:55,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628179765] [2024-12-02 08:42:55,888 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:42:55,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:42:55,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:42:55,890 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:42:55,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 08:42:55,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:42:55,997 INFO L256 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-12-02 08:42:55,999 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:42:56,755 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:42:56,756 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:42:58,502 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:42:58,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1628179765] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:42:58,502 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 08:42:58,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 30 [2024-12-02 08:42:58,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283798586] [2024-12-02 08:42:58,502 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 08:42:58,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-12-02 08:42:58,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:42:58,503 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-12-02 08:42:58,503 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=775, Unknown=0, NotChecked=0, Total=870 [2024-12-02 08:42:58,503 INFO L87 Difference]: Start difference. First operand 2374 states and 3178 transitions. Second operand has 30 states, 30 states have (on average 5.933333333333334) internal successors, (178), 30 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:43:02,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:43:02,513 INFO L93 Difference]: Finished difference Result 20807 states and 27724 transitions. [2024-12-02 08:43:02,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2024-12-02 08:43:02,513 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.933333333333334) internal successors, (178), 30 states have internal predecessors, (178), 0 states have call successors, (0), 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 08:43:02,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:43:02,546 INFO L225 Difference]: With dead ends: 20807 [2024-12-02 08:43:02,547 INFO L226 Difference]: Without dead ends: 18481 [2024-12-02 08:43:02,552 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2914 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=2144, Invalid=7756, Unknown=0, NotChecked=0, Total=9900 [2024-12-02 08:43:02,552 INFO L435 NwaCegarLoop]: 78 mSDtfsCounter, 2938 mSDsluCounter, 1272 mSDsCounter, 0 mSdLazyCounter, 1310 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2938 SdHoareTripleChecker+Valid, 1350 SdHoareTripleChecker+Invalid, 1370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-12-02 08:43:02,553 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2938 Valid, 1350 Invalid, 1370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1310 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-12-02 08:43:02,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18481 states. [2024-12-02 08:43:02,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18481 to 17251. [2024-12-02 08:43:02,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17251 states, 17250 states have (on average 1.2937971014492753) internal successors, (22318), 17250 states have internal predecessors, (22318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:43:02,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17251 states to 17251 states and 22318 transitions. [2024-12-02 08:43:02,928 INFO L78 Accepts]: Start accepts. Automaton has 17251 states and 22318 transitions. Word has length 68 [2024-12-02 08:43:02,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:43:02,928 INFO L471 AbstractCegarLoop]: Abstraction has 17251 states and 22318 transitions. [2024-12-02 08:43:02,928 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 5.933333333333334) internal successors, (178), 30 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:43:02,928 INFO L276 IsEmpty]: Start isEmpty. Operand 17251 states and 22318 transitions. [2024-12-02 08:43:02,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-12-02 08:43:02,929 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:43:02,929 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, 1, 1, 1, 1, 1] [2024-12-02 08:43:02,936 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 08:43:03,130 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-12-02 08:43:03,131 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:43:03,131 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:43:03,132 INFO L85 PathProgramCache]: Analyzing trace with hash 2021712871, now seen corresponding path program 1 times [2024-12-02 08:43:03,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:43:03,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431563405] [2024-12-02 08:43:03,132 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:43:03,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:43:03,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:43:03,199 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:43:03,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:43:03,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431563405] [2024-12-02 08:43:03,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431563405] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:43:03,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:43:03,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 08:43:03,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787093138] [2024-12-02 08:43:03,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:43:03,200 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 08:43:03,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:43:03,200 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 08:43:03,200 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:43:03,201 INFO L87 Difference]: Start difference. First operand 17251 states and 22318 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 08:43:03,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:43:03,608 INFO L93 Difference]: Finished difference Result 41375 states and 53293 transitions. [2024-12-02 08:43:03,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 08:43:03,608 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 08:43:03,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:43:03,632 INFO L225 Difference]: With dead ends: 41375 [2024-12-02 08:43:03,632 INFO L226 Difference]: Without dead ends: 24464 [2024-12-02 08:43:03,641 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 08:43:03,642 INFO L435 NwaCegarLoop]: 91 mSDtfsCounter, 40 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 168 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 08:43:03,642 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 168 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:43:03,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24464 states. [2024-12-02 08:43:04,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24464 to 24462. [2024-12-02 08:43:04,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24462 states, 24461 states have (on average 1.269571971710069) internal successors, (31055), 24461 states have internal predecessors, (31055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:43:04,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24462 states to 24462 states and 31055 transitions. [2024-12-02 08:43:04,158 INFO L78 Accepts]: Start accepts. Automaton has 24462 states and 31055 transitions. Word has length 69 [2024-12-02 08:43:04,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:43:04,158 INFO L471 AbstractCegarLoop]: Abstraction has 24462 states and 31055 transitions. [2024-12-02 08:43:04,158 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 08:43:04,158 INFO L276 IsEmpty]: Start isEmpty. Operand 24462 states and 31055 transitions. [2024-12-02 08:43:04,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-12-02 08:43:04,159 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:43:04,159 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, 1, 1, 1, 1, 1] [2024-12-02 08:43:04,159 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-12-02 08:43:04,160 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:43:04,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:43:04,160 INFO L85 PathProgramCache]: Analyzing trace with hash 174114667, now seen corresponding path program 1 times [2024-12-02 08:43:04,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:43:04,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115423169] [2024-12-02 08:43:04,160 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:43:04,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:43:04,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:43:04,198 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:43:04,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:43:04,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115423169] [2024-12-02 08:43:04,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115423169] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:43:04,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:43:04,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 08:43:04,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290477686] [2024-12-02 08:43:04,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:43:04,198 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 08:43:04,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:43:04,199 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 08:43:04,199 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:43:04,199 INFO L87 Difference]: Start difference. First operand 24462 states and 31055 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 08:43:05,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:43:05,010 INFO L93 Difference]: Finished difference Result 55361 states and 70358 transitions. [2024-12-02 08:43:05,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 08:43:05,011 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 08:43:05,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:43:05,047 INFO L225 Difference]: With dead ends: 55361 [2024-12-02 08:43:05,047 INFO L226 Difference]: Without dead ends: 31326 [2024-12-02 08:43:05,063 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 08:43:05,063 INFO L435 NwaCegarLoop]: 125 mSDtfsCounter, 34 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 204 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 08:43:05,063 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 204 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:43:05,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31326 states. [2024-12-02 08:43:05,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31326 to 24981. [2024-12-02 08:43:05,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24981 states, 24980 states have (on average 1.254523618895116) internal successors, (31338), 24980 states have internal predecessors, (31338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:43:05,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24981 states to 24981 states and 31338 transitions. [2024-12-02 08:43:05,745 INFO L78 Accepts]: Start accepts. Automaton has 24981 states and 31338 transitions. Word has length 69 [2024-12-02 08:43:05,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:43:05,746 INFO L471 AbstractCegarLoop]: Abstraction has 24981 states and 31338 transitions. [2024-12-02 08:43:05,746 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 08:43:05,746 INFO L276 IsEmpty]: Start isEmpty. Operand 24981 states and 31338 transitions. [2024-12-02 08:43:05,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-12-02 08:43:05,748 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:43:05,748 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, 1, 1, 1, 1, 1, 1] [2024-12-02 08:43:05,748 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-12-02 08:43:05,748 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:43:05,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:43:05,748 INFO L85 PathProgramCache]: Analyzing trace with hash 572641458, now seen corresponding path program 1 times [2024-12-02 08:43:05,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:43:05,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844680421] [2024-12-02 08:43:05,748 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:43:05,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:43:05,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:43:06,503 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:43:06,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:43:06,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844680421] [2024-12-02 08:43:06,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844680421] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:43:06,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [486613160] [2024-12-02 08:43:06,503 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:43:06,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:43:06,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:43:06,505 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:43:06,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 08:43:06,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:43:06,607 INFO L256 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-12-02 08:43:06,609 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:43:07,265 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:43:07,265 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:43:08,166 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:43:08,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [486613160] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:43:08,166 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 08:43:08,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 35 [2024-12-02 08:43:08,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303800952] [2024-12-02 08:43:08,166 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 08:43:08,167 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-12-02 08:43:08,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:43:08,167 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-12-02 08:43:08,168 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=1068, Unknown=0, NotChecked=0, Total=1190 [2024-12-02 08:43:08,168 INFO L87 Difference]: Start difference. First operand 24981 states and 31338 transitions. Second operand has 35 states, 35 states have (on average 5.371428571428571) internal successors, (188), 35 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:43:19,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:43:19,052 INFO L93 Difference]: Finished difference Result 118422 states and 148379 transitions. [2024-12-02 08:43:19,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2024-12-02 08:43:19,053 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 5.371428571428571) internal successors, (188), 35 states have internal predecessors, (188), 0 states have call successors, (0), 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 08:43:19,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:43:19,119 INFO L225 Difference]: With dead ends: 118422 [2024-12-02 08:43:19,119 INFO L226 Difference]: Without dead ends: 93667 [2024-12-02 08:43:19,141 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10279 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=4793, Invalid=22929, Unknown=0, NotChecked=0, Total=27722 [2024-12-02 08:43:19,142 INFO L435 NwaCegarLoop]: 118 mSDtfsCounter, 5843 mSDsluCounter, 2486 mSDsCounter, 0 mSdLazyCounter, 2384 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5843 SdHoareTripleChecker+Valid, 2604 SdHoareTripleChecker+Invalid, 2576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 2384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-12-02 08:43:19,142 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5843 Valid, 2604 Invalid, 2576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 2384 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-12-02 08:43:19,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93667 states. [2024-12-02 08:43:20,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93667 to 31683. [2024-12-02 08:43:20,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31683 states, 31682 states have (on average 1.2572438608673695) internal successors, (39832), 31682 states have internal predecessors, (39832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:43:20,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31683 states to 31683 states and 39832 transitions. [2024-12-02 08:43:20,133 INFO L78 Accepts]: Start accepts. Automaton has 31683 states and 39832 transitions. Word has length 70 [2024-12-02 08:43:20,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:43:20,133 INFO L471 AbstractCegarLoop]: Abstraction has 31683 states and 39832 transitions. [2024-12-02 08:43:20,133 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 5.371428571428571) internal successors, (188), 35 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:43:20,134 INFO L276 IsEmpty]: Start isEmpty. Operand 31683 states and 39832 transitions. [2024-12-02 08:43:20,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-12-02 08:43:20,139 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:43:20,139 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:43:20,149 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 08:43:20,340 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:43:20,340 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:43:20,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:43:20,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1967381768, now seen corresponding path program 1 times [2024-12-02 08:43:20,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:43:20,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313333041] [2024-12-02 08:43:20,340 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:43:20,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:43:20,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:43:20,387 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-12-02 08:43:20,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:43:20,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313333041] [2024-12-02 08:43:20,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313333041] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:43:20,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:43:20,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 08:43:20,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479544016] [2024-12-02 08:43:20,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:43:20,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 08:43:20,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:43:20,388 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 08:43:20,388 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:43:20,388 INFO L87 Difference]: Start difference. First operand 31683 states and 39832 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:43:21,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:43:21,265 INFO L93 Difference]: Finished difference Result 74163 states and 92401 transitions. [2024-12-02 08:43:21,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 08:43:21,265 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2024-12-02 08:43:21,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:43:21,294 INFO L225 Difference]: With dead ends: 74163 [2024-12-02 08:43:21,294 INFO L226 Difference]: Without dead ends: 43181 [2024-12-02 08:43:21,311 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 08:43:21,311 INFO L435 NwaCegarLoop]: 98 mSDtfsCounter, 38 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 175 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 08:43:21,311 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 175 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:43:21,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43181 states. [2024-12-02 08:43:22,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43181 to 43179. [2024-12-02 08:43:22,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43179 states, 43178 states have (on average 1.2162675436564918) internal successors, (52516), 43178 states have internal predecessors, (52516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:43:22,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43179 states to 43179 states and 52516 transitions. [2024-12-02 08:43:22,405 INFO L78 Accepts]: Start accepts. Automaton has 43179 states and 52516 transitions. Word has length 113 [2024-12-02 08:43:22,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:43:22,406 INFO L471 AbstractCegarLoop]: Abstraction has 43179 states and 52516 transitions. [2024-12-02 08:43:22,406 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:43:22,406 INFO L276 IsEmpty]: Start isEmpty. Operand 43179 states and 52516 transitions. [2024-12-02 08:43:22,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-12-02 08:43:22,422 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:43:22,422 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:43:22,422 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-12-02 08:43:22,422 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:43:22,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:43:22,423 INFO L85 PathProgramCache]: Analyzing trace with hash -37649684, now seen corresponding path program 1 times [2024-12-02 08:43:22,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:43:22,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131697648] [2024-12-02 08:43:22,423 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:43:22,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:43:22,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:43:22,481 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-12-02 08:43:22,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:43:22,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131697648] [2024-12-02 08:43:22,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131697648] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:43:22,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:43:22,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 08:43:22,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197917711] [2024-12-02 08:43:22,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:43:22,482 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 08:43:22,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:43:22,482 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 08:43:22,482 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:43:22,482 INFO L87 Difference]: Start difference. First operand 43179 states and 52516 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:43:23,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:43:23,915 INFO L93 Difference]: Finished difference Result 55569 states and 67238 transitions. [2024-12-02 08:43:23,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 08:43:23,915 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2024-12-02 08:43:23,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:43:23,948 INFO L225 Difference]: With dead ends: 55569 [2024-12-02 08:43:23,948 INFO L226 Difference]: Without dead ends: 35922 [2024-12-02 08:43:23,961 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 08:43:23,961 INFO L435 NwaCegarLoop]: 114 mSDtfsCounter, 39 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 191 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 08:43:23,961 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 191 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:43:23,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35922 states. [2024-12-02 08:43:24,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35922 to 35920. [2024-12-02 08:43:24,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35920 states, 35919 states have (on average 1.1917926445613742) internal successors, (42808), 35919 states have internal predecessors, (42808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:43:24,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35920 states to 35920 states and 42808 transitions. [2024-12-02 08:43:24,990 INFO L78 Accepts]: Start accepts. Automaton has 35920 states and 42808 transitions. Word has length 113 [2024-12-02 08:43:24,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:43:24,991 INFO L471 AbstractCegarLoop]: Abstraction has 35920 states and 42808 transitions. [2024-12-02 08:43:24,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:43:24,991 INFO L276 IsEmpty]: Start isEmpty. Operand 35920 states and 42808 transitions. [2024-12-02 08:43:24,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-12-02 08:43:24,998 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:43:24,998 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:43:24,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-12-02 08:43:24,998 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:43:24,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:43:24,999 INFO L85 PathProgramCache]: Analyzing trace with hash -9836009, now seen corresponding path program 1 times [2024-12-02 08:43:24,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:43:24,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896561923] [2024-12-02 08:43:24,999 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:43:24,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:43:25,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:43:25,609 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 26 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:43:25,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:43:25,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896561923] [2024-12-02 08:43:25,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896561923] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:43:25,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2110283771] [2024-12-02 08:43:25,609 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:43:25,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:43:25,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:43:25,611 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:43:25,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 08:43:25,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:43:25,728 INFO L256 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-12-02 08:43:25,730 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:43:27,734 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 16 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:43:27,734 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:43:30,629 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 16 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:43:30,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2110283771] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:43:30,630 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 08:43:30,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 17, 18] total 44 [2024-12-02 08:43:30,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533466809] [2024-12-02 08:43:30,630 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 08:43:30,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-12-02 08:43:30,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:43:30,631 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-12-02 08:43:30,631 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=1733, Unknown=0, NotChecked=0, Total=1892 [2024-12-02 08:43:30,631 INFO L87 Difference]: Start difference. First operand 35920 states and 42808 transitions. Second operand has 44 states, 44 states have (on average 7.340909090909091) internal successors, (323), 44 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 08:44:27,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:44:27,344 INFO L93 Difference]: Finished difference Result 99866 states and 119185 transitions. [2024-12-02 08:44:27,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 320 states. [2024-12-02 08:44:27,345 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 7.340909090909091) internal successors, (323), 44 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 08:44:27,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:44:27,386 INFO L225 Difference]: With dead ends: 99866 [2024-12-02 08:44:27,386 INFO L226 Difference]: Without dead ends: 64714 [2024-12-02 08:44:27,408 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 556 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 360 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54125 ImplicationChecksByTransitivity, 48.2s TimeCoverageRelationStatistics Valid=15683, Invalid=114999, Unknown=0, NotChecked=0, Total=130682 [2024-12-02 08:44:27,410 INFO L435 NwaCegarLoop]: 382 mSDtfsCounter, 3883 mSDsluCounter, 8264 mSDsCounter, 0 mSdLazyCounter, 9429 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3883 SdHoareTripleChecker+Valid, 8646 SdHoareTripleChecker+Invalid, 9584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 9429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2024-12-02 08:44:27,410 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3883 Valid, 8646 Invalid, 9584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 9429 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2024-12-02 08:44:27,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64714 states. [2024-12-02 08:44:28,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64714 to 38647. [2024-12-02 08:44:28,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38647 states, 38646 states have (on average 1.1950525280753506) internal successors, (46184), 38646 states have internal predecessors, (46184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:44:28,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38647 states to 38647 states and 46184 transitions. [2024-12-02 08:44:28,893 INFO L78 Accepts]: Start accepts. Automaton has 38647 states and 46184 transitions. Word has length 114 [2024-12-02 08:44:28,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:44:28,893 INFO L471 AbstractCegarLoop]: Abstraction has 38647 states and 46184 transitions. [2024-12-02 08:44:28,894 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 7.340909090909091) internal successors, (323), 44 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 08:44:28,894 INFO L276 IsEmpty]: Start isEmpty. Operand 38647 states and 46184 transitions. [2024-12-02 08:44:28,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-12-02 08:44:28,901 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:44:28,901 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:44:28,908 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-12-02 08:44:29,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-12-02 08:44:29,102 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:44:29,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:44:29,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1862114499, now seen corresponding path program 1 times [2024-12-02 08:44:29,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:44:29,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410337913] [2024-12-02 08:44:29,102 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:44:29,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:44:29,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:44:29,158 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-12-02 08:44:29,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:44:29,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410337913] [2024-12-02 08:44:29,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410337913] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:44:29,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:44:29,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 08:44:29,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125219289] [2024-12-02 08:44:29,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:44:29,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 08:44:29,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:44:29,159 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 08:44:29,159 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:44:29,159 INFO L87 Difference]: Start difference. First operand 38647 states and 46184 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:44:30,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:44:30,270 INFO L93 Difference]: Finished difference Result 56016 states and 66760 transitions. [2024-12-02 08:44:30,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 08:44:30,270 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2024-12-02 08:44:30,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:44:30,293 INFO L225 Difference]: With dead ends: 56016 [2024-12-02 08:44:30,293 INFO L226 Difference]: Without dead ends: 30194 [2024-12-02 08:44:30,304 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 08:44:30,304 INFO L435 NwaCegarLoop]: 135 mSDtfsCounter, 24 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 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 08:44:30,304 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24 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 08:44:30,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30194 states. [2024-12-02 08:44:31,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30194 to 27261. [2024-12-02 08:44:31,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27261 states, 27260 states have (on average 1.1776595744680851) internal successors, (32103), 27260 states have internal predecessors, (32103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:44:31,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27261 states to 27261 states and 32103 transitions. [2024-12-02 08:44:31,268 INFO L78 Accepts]: Start accepts. Automaton has 27261 states and 32103 transitions. Word has length 114 [2024-12-02 08:44:31,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:44:31,268 INFO L471 AbstractCegarLoop]: Abstraction has 27261 states and 32103 transitions. [2024-12-02 08:44:31,268 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:44:31,268 INFO L276 IsEmpty]: Start isEmpty. Operand 27261 states and 32103 transitions. [2024-12-02 08:44:31,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-12-02 08:44:31,273 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:44:31,273 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:44:31,273 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-12-02 08:44:31,273 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:44:31,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:44:31,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1188414017, now seen corresponding path program 1 times [2024-12-02 08:44:31,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:44:31,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430066347] [2024-12-02 08:44:31,274 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:44:31,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:44:31,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:44:31,310 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-12-02 08:44:31,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:44:31,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430066347] [2024-12-02 08:44:31,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430066347] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:44:31,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:44:31,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 08:44:31,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57426390] [2024-12-02 08:44:31,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:44:31,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 08:44:31,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:44:31,312 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 08:44:31,312 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:44:31,312 INFO L87 Difference]: Start difference. First operand 27261 states and 32103 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:44:31,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:44:31,964 INFO L93 Difference]: Finished difference Result 33501 states and 39253 transitions. [2024-12-02 08:44:31,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 08:44:31,965 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2024-12-02 08:44:31,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:44:31,977 INFO L225 Difference]: With dead ends: 33501 [2024-12-02 08:44:31,977 INFO L226 Difference]: Without dead ends: 17494 [2024-12-02 08:44:31,984 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 08:44:31,985 INFO L435 NwaCegarLoop]: 131 mSDtfsCounter, 26 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 209 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 08:44:31,985 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 209 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:44:31,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17494 states. [2024-12-02 08:44:32,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17494 to 15614. [2024-12-02 08:44:32,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15614 states, 15613 states have (on average 1.1471850381092679) internal successors, (17911), 15613 states have internal predecessors, (17911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:44:32,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15614 states to 15614 states and 17911 transitions. [2024-12-02 08:44:32,559 INFO L78 Accepts]: Start accepts. Automaton has 15614 states and 17911 transitions. Word has length 114 [2024-12-02 08:44:32,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:44:32,559 INFO L471 AbstractCegarLoop]: Abstraction has 15614 states and 17911 transitions. [2024-12-02 08:44:32,559 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:44:32,560 INFO L276 IsEmpty]: Start isEmpty. Operand 15614 states and 17911 transitions. [2024-12-02 08:44:32,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-12-02 08:44:32,563 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:44:32,563 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:44:32,563 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-12-02 08:44:32,563 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:44:32,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:44:32,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1424329974, now seen corresponding path program 1 times [2024-12-02 08:44:32,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:44:32,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871128585] [2024-12-02 08:44:32,564 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:44:32,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:44:32,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:44:32,648 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 53 proven. 3 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-12-02 08:44:32,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:44:32,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871128585] [2024-12-02 08:44:32,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871128585] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:44:32,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1847476061] [2024-12-02 08:44:32,648 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:44:32,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:44:32,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:44:32,650 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:44:32,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 08:44:32,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:44:32,773 INFO L256 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 08:44:32,775 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:44:32,926 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 53 proven. 3 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-12-02 08:44:32,927 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:44:33,004 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 53 proven. 3 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-12-02 08:44:33,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1847476061] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:44:33,005 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 08:44:33,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2024-12-02 08:44:33,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609014649] [2024-12-02 08:44:33,005 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 08:44:33,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-12-02 08:44:33,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:44:33,006 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-12-02 08:44:33,006 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2024-12-02 08:44:33,006 INFO L87 Difference]: Start difference. First operand 15614 states and 17911 transitions. Second operand has 16 states, 16 states have (on average 11.75) internal successors, (188), 15 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:44:33,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:44:33,626 INFO L93 Difference]: Finished difference Result 17246 states and 19799 transitions. [2024-12-02 08:44:33,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 08:44:33,626 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 11.75) internal successors, (188), 15 states have internal predecessors, (188), 0 states have call successors, (0), 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 08:44:33,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:44:33,637 INFO L225 Difference]: With dead ends: 17246 [2024-12-02 08:44:33,637 INFO L226 Difference]: Without dead ends: 15502 [2024-12-02 08:44:33,641 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 220 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 08:44:33,641 INFO L435 NwaCegarLoop]: 68 mSDtfsCounter, 469 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 469 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 08:44:33,641 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [469 Valid, 227 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 08:44:33,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15502 states. [2024-12-02 08:44:34,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15502 to 15359. [2024-12-02 08:44:34,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15359 states, 15358 states have (on average 1.1461127751009246) internal successors, (17602), 15358 states have internal predecessors, (17602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:44:34,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15359 states to 15359 states and 17602 transitions. [2024-12-02 08:44:34,215 INFO L78 Accepts]: Start accepts. Automaton has 15359 states and 17602 transitions. Word has length 115 [2024-12-02 08:44:34,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:44:34,215 INFO L471 AbstractCegarLoop]: Abstraction has 15359 states and 17602 transitions. [2024-12-02 08:44:34,215 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 11.75) internal successors, (188), 15 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:44:34,215 INFO L276 IsEmpty]: Start isEmpty. Operand 15359 states and 17602 transitions. [2024-12-02 08:44:34,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-12-02 08:44:34,218 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:44:34,219 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:44:34,224 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-02 08:44:34,419 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-12-02 08:44:34,419 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:44:34,419 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:44:34,419 INFO L85 PathProgramCache]: Analyzing trace with hash 41012101, now seen corresponding path program 1 times [2024-12-02 08:44:34,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:44:34,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191799649] [2024-12-02 08:44:34,420 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:44:34,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:44:34,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:44:35,495 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 36 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:44:35,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:44:35,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191799649] [2024-12-02 08:44:35,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191799649] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:44:35,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [403179715] [2024-12-02 08:44:35,496 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:44:35,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:44:35,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:44:35,497 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:44:35,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 08:44:35,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:44:35,601 INFO L256 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-12-02 08:44:35,603 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:44:37,130 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 36 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:44:37,130 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:44:40,702 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 36 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:44:40,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [403179715] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:44:40,703 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 08:44:40,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 18, 17] total 52 [2024-12-02 08:44:40,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437326391] [2024-12-02 08:44:40,703 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 08:44:40,703 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-12-02 08:44:40,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:44:40,704 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-12-02 08:44:40,704 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=2427, Unknown=0, NotChecked=0, Total=2652 [2024-12-02 08:44:40,704 INFO L87 Difference]: Start difference. First operand 15359 states and 17602 transitions. Second operand has 52 states, 52 states have (on average 5.884615384615385) internal successors, (306), 52 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:45:57,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:45:57,780 INFO L93 Difference]: Finished difference Result 33038 states and 37716 transitions. [2024-12-02 08:45:57,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 420 states. [2024-12-02 08:45:57,781 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 5.884615384615385) internal successors, (306), 52 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2024-12-02 08:45:57,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:45:57,799 INFO L225 Difference]: With dead ends: 33038 [2024-12-02 08:45:57,799 INFO L226 Difference]: Without dead ends: 29632 [2024-12-02 08:45:57,809 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 669 GetRequests, 200 SyntacticMatches, 1 SemanticMatches, 468 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93514 ImplicationChecksByTransitivity, 69.0s TimeCoverageRelationStatistics Valid=26399, Invalid=194031, Unknown=0, NotChecked=0, Total=220430 [2024-12-02 08:45:57,809 INFO L435 NwaCegarLoop]: 423 mSDtfsCounter, 6017 mSDsluCounter, 11114 mSDsCounter, 0 mSdLazyCounter, 9669 mSolverCounterSat, 267 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6017 SdHoareTripleChecker+Valid, 11537 SdHoareTripleChecker+Invalid, 9936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 267 IncrementalHoareTripleChecker+Valid, 9669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2024-12-02 08:45:57,810 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6017 Valid, 11537 Invalid, 9936 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [267 Valid, 9669 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2024-12-02 08:45:57,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29632 states. [2024-12-02 08:45:58,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29632 to 19594. [2024-12-02 08:45:58,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19594 states, 19593 states have (on average 1.1460215383044965) internal successors, (22454), 19593 states have internal predecessors, (22454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:45:58,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19594 states to 19594 states and 22454 transitions. [2024-12-02 08:45:58,933 INFO L78 Accepts]: Start accepts. Automaton has 19594 states and 22454 transitions. Word has length 116 [2024-12-02 08:45:58,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:45:58,933 INFO L471 AbstractCegarLoop]: Abstraction has 19594 states and 22454 transitions. [2024-12-02 08:45:58,933 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 5.884615384615385) internal successors, (306), 52 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:45:58,933 INFO L276 IsEmpty]: Start isEmpty. Operand 19594 states and 22454 transitions. [2024-12-02 08:45:58,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-12-02 08:45:58,936 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:45:58,936 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 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 08:45:58,943 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-12-02 08:45:59,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-12-02 08:45:59,137 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:45:59,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:45:59,137 INFO L85 PathProgramCache]: Analyzing trace with hash -2129109370, now seen corresponding path program 1 times [2024-12-02 08:45:59,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:45:59,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089631274] [2024-12-02 08:45:59,137 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:45:59,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:45:59,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:46:00,128 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 16 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:46:00,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:46:00,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089631274] [2024-12-02 08:46:00,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089631274] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:46:00,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969325046] [2024-12-02 08:46:00,128 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:46:00,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:46:00,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:46:00,129 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:46:00,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 08:46:00,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:46:00,248 INFO L256 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-12-02 08:46:00,250 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:46:02,517 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 27 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:46:02,517 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:46:09,487 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 27 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:46:09,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1969325046] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:46:09,488 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 08:46:09,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 63 [2024-12-02 08:46:09,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319101647] [2024-12-02 08:46:09,488 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 08:46:09,488 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2024-12-02 08:46:09,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:46:09,489 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2024-12-02 08:46:09,490 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=298, Invalid=3608, Unknown=0, NotChecked=0, Total=3906 [2024-12-02 08:46:09,490 INFO L87 Difference]: Start difference. First operand 19594 states and 22454 transitions. Second operand has 63 states, 63 states have (on average 5.222222222222222) internal successors, (329), 63 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:49:10,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:49:10,750 INFO L93 Difference]: Finished difference Result 59222 states and 67167 transitions. [2024-12-02 08:49:10,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 450 states. [2024-12-02 08:49:10,751 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 5.222222222222222) internal successors, (329), 63 states have internal predecessors, (329), 0 states have call successors, (0), 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 08:49:10,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:49:10,780 INFO L225 Difference]: With dead ends: 59222 [2024-12-02 08:49:10,780 INFO L226 Difference]: Without dead ends: 51683 [2024-12-02 08:49:10,793 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 702 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 509 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111565 ImplicationChecksByTransitivity, 166.8s TimeCoverageRelationStatistics Valid=37690, Invalid=222920, Unknown=0, NotChecked=0, Total=260610 [2024-12-02 08:49:10,794 INFO L435 NwaCegarLoop]: 343 mSDtfsCounter, 9581 mSDsluCounter, 12204 mSDsCounter, 0 mSdLazyCounter, 13039 mSolverCounterSat, 421 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9581 SdHoareTripleChecker+Valid, 12547 SdHoareTripleChecker+Invalid, 13460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 421 IncrementalHoareTripleChecker+Valid, 13039 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.4s IncrementalHoareTripleChecker+Time [2024-12-02 08:49:10,794 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9581 Valid, 12547 Invalid, 13460 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [421 Valid, 13039 Invalid, 0 Unknown, 0 Unchecked, 12.4s Time] [2024-12-02 08:49:10,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51683 states. [2024-12-02 08:49:12,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51683 to 24491. [2024-12-02 08:49:12,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24491 states, 24490 states have (on average 1.1508779093507555) internal successors, (28185), 24490 states have internal predecessors, (28185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:49:12,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24491 states to 24491 states and 28185 transitions. [2024-12-02 08:49:12,756 INFO L78 Accepts]: Start accepts. Automaton has 24491 states and 28185 transitions. Word has length 117 [2024-12-02 08:49:12,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:49:12,756 INFO L471 AbstractCegarLoop]: Abstraction has 24491 states and 28185 transitions. [2024-12-02 08:49:12,756 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 5.222222222222222) internal successors, (329), 63 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:49:12,756 INFO L276 IsEmpty]: Start isEmpty. Operand 24491 states and 28185 transitions. [2024-12-02 08:49:12,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-12-02 08:49:12,759 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:49:12,759 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:49:12,766 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-12-02 08:49:12,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-12-02 08:49:12,960 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:49:12,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:49:12,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1264384900, now seen corresponding path program 1 times [2024-12-02 08:49:12,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:49:12,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824237806] [2024-12-02 08:49:12,961 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:49:12,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:49:12,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:49:13,033 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 58 proven. 5 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-12-02 08:49:13,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:49:13,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824237806] [2024-12-02 08:49:13,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824237806] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:49:13,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104967532] [2024-12-02 08:49:13,034 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:49:13,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:49:13,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:49:13,035 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:49:13,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-02 08:49:13,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:49:13,188 INFO L256 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 08:49:13,189 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:49:13,325 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 58 proven. 5 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-12-02 08:49:13,325 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:49:13,418 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 58 proven. 5 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-12-02 08:49:13,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2104967532] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:49:13,418 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 08:49:13,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2024-12-02 08:49:13,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963961613] [2024-12-02 08:49:13,418 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 08:49:13,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-12-02 08:49:13,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:49:13,419 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-12-02 08:49:13,419 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2024-12-02 08:49:13,419 INFO L87 Difference]: Start difference. First operand 24491 states and 28185 transitions. Second operand has 16 states, 16 states have (on average 12.375) internal successors, (198), 15 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:49:15,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:49:15,525 INFO L93 Difference]: Finished difference Result 27597 states and 31794 transitions. [2024-12-02 08:49:15,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 08:49:15,526 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 12.375) internal successors, (198), 15 states have internal predecessors, (198), 0 states have call successors, (0), 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 08:49:15,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:49:15,538 INFO L225 Difference]: With dead ends: 27597 [2024-12-02 08:49:15,538 INFO L226 Difference]: Without dead ends: 23523 [2024-12-02 08:49:15,541 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 08:49:15,541 INFO L435 NwaCegarLoop]: 76 mSDtfsCounter, 406 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 406 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 08:49:15,541 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [406 Valid, 290 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 08:49:15,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23523 states. [2024-12-02 08:49:17,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23523 to 23013. [2024-12-02 08:49:17,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23013 states, 23012 states have (on average 1.1475317225795236) internal successors, (26407), 23012 states have internal predecessors, (26407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:49:17,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23013 states to 23013 states and 26407 transitions. [2024-12-02 08:49:17,192 INFO L78 Accepts]: Start accepts. Automaton has 23013 states and 26407 transitions. Word has length 117 [2024-12-02 08:49:17,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:49:17,192 INFO L471 AbstractCegarLoop]: Abstraction has 23013 states and 26407 transitions. [2024-12-02 08:49:17,192 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 12.375) internal successors, (198), 15 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:49:17,193 INFO L276 IsEmpty]: Start isEmpty. Operand 23013 states and 26407 transitions. [2024-12-02 08:49:17,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-12-02 08:49:17,198 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:49:17,198 INFO L218 NwaCegarLoop]: trace histogram [6, 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, 1, 1, 1, 1, 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 08:49:17,207 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-12-02 08:49:17,398 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:49:17,398 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:49:17,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:49:17,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1276634305, now seen corresponding path program 1 times [2024-12-02 08:49:17,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:49:17,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242910665] [2024-12-02 08:49:17,399 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:49:17,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:49:17,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:49:18,167 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 45 proven. 197 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-02 08:49:18,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:49:18,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242910665] [2024-12-02 08:49:18,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242910665] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:49:18,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974052259] [2024-12-02 08:49:18,167 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:49:18,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:49:18,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:49:18,169 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:49:18,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-12-02 08:49:18,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:49:18,296 INFO L256 TraceCheckSpWp]: Trace formula consists of 547 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-12-02 08:49:18,299 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:49:20,092 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 150 proven. 73 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-12-02 08:49:20,092 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:49:23,679 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 92 proven. 158 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:49:23,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [974052259] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:49:23,679 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 08:49:23,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 19] total 41 [2024-12-02 08:49:23,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556689180] [2024-12-02 08:49:23,679 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 08:49:23,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-12-02 08:49:23,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:49:23,681 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-12-02 08:49:23,681 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=1440, Unknown=0, NotChecked=0, Total=1640 [2024-12-02 08:49:23,681 INFO L87 Difference]: Start difference. First operand 23013 states and 26407 transitions. Second operand has 41 states, 41 states have (on average 9.24390243902439) internal successors, (379), 41 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:49:40,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:49:40,291 INFO L93 Difference]: Finished difference Result 83735 states and 97253 transitions. [2024-12-02 08:49:40,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 154 states. [2024-12-02 08:49:40,292 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 9.24390243902439) internal successors, (379), 41 states have internal predecessors, (379), 0 states have call successors, (0), 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 08:49:40,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:49:40,351 INFO L225 Difference]: With dead ends: 83735 [2024-12-02 08:49:40,352 INFO L226 Difference]: Without dead ends: 67797 [2024-12-02 08:49:40,364 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 500 GetRequests, 309 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12676 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=5728, Invalid=31328, Unknown=0, NotChecked=0, Total=37056 [2024-12-02 08:49:40,365 INFO L435 NwaCegarLoop]: 261 mSDtfsCounter, 3112 mSDsluCounter, 3509 mSDsCounter, 0 mSdLazyCounter, 3859 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3112 SdHoareTripleChecker+Valid, 3770 SdHoareTripleChecker+Invalid, 4066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 3859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-12-02 08:49:40,365 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3112 Valid, 3770 Invalid, 4066 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [207 Valid, 3859 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-12-02 08:49:40,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67797 states. [2024-12-02 08:49:43,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67797 to 44980. [2024-12-02 08:49:43,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44980 states, 44979 states have (on average 1.1479579359256542) internal successors, (51634), 44979 states have internal predecessors, (51634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:49:43,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44980 states to 44980 states and 51634 transitions. [2024-12-02 08:49:43,994 INFO L78 Accepts]: Start accepts. Automaton has 44980 states and 51634 transitions. Word has length 153 [2024-12-02 08:49:43,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:49:43,994 INFO L471 AbstractCegarLoop]: Abstraction has 44980 states and 51634 transitions. [2024-12-02 08:49:43,994 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 9.24390243902439) internal successors, (379), 41 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:49:43,994 INFO L276 IsEmpty]: Start isEmpty. Operand 44980 states and 51634 transitions. [2024-12-02 08:49:44,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-12-02 08:49:44,000 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:49:44,000 INFO L218 NwaCegarLoop]: trace histogram [6, 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, 1, 1, 1, 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 08:49:44,007 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-12-02 08:49:44,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:49:44,201 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:49:44,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:49:44,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1430761345, now seen corresponding path program 1 times [2024-12-02 08:49:44,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:49:44,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538356799] [2024-12-02 08:49:44,201 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:49:44,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:49:44,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:49:44,863 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 145 proven. 28 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2024-12-02 08:49:44,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:49:44,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538356799] [2024-12-02 08:49:44,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538356799] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:49:44,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1137356673] [2024-12-02 08:49:44,863 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:49:44,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:49:44,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:49:44,865 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:49:44,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-12-02 08:49:44,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:49:44,990 INFO L256 TraceCheckSpWp]: Trace formula consists of 545 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-12-02 08:49:44,992 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:49:46,797 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 128 proven. 106 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-12-02 08:49:46,798 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:49:48,651 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 115 proven. 119 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-12-02 08:49:48,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1137356673] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:49:48,651 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 08:49:48,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 13] total 32 [2024-12-02 08:49:48,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579576968] [2024-12-02 08:49:48,651 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 08:49:48,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-12-02 08:49:48,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:49:48,652 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-12-02 08:49:48,652 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=856, Unknown=0, NotChecked=0, Total=992 [2024-12-02 08:49:48,653 INFO L87 Difference]: Start difference. First operand 44980 states and 51634 transitions. Second operand has 32 states, 32 states have (on average 8.9375) internal successors, (286), 32 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:50:00,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:50:00,045 INFO L93 Difference]: Finished difference Result 104159 states and 119455 transitions. [2024-12-02 08:50:00,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-12-02 08:50:00,046 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 8.9375) internal successors, (286), 32 states have internal predecessors, (286), 0 states have call successors, (0), 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 08:50:00,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:50:00,131 INFO L225 Difference]: With dead ends: 104159 [2024-12-02 08:50:00,132 INFO L226 Difference]: Without dead ends: 92881 [2024-12-02 08:50:00,147 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 289 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2415 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1617, Invalid=6039, Unknown=0, NotChecked=0, Total=7656 [2024-12-02 08:50:00,148 INFO L435 NwaCegarLoop]: 137 mSDtfsCounter, 4253 mSDsluCounter, 3052 mSDsCounter, 0 mSdLazyCounter, 2150 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4253 SdHoareTripleChecker+Valid, 3189 SdHoareTripleChecker+Invalid, 2230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-12-02 08:50:00,148 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4253 Valid, 3189 Invalid, 2230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 2150 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-12-02 08:50:00,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92881 states. [2024-12-02 08:50:04,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92881 to 45704. [2024-12-02 08:50:04,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45704 states, 45703 states have (on average 1.1456359538761132) internal successors, (52359), 45703 states have internal predecessors, (52359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:50:04,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45704 states to 45704 states and 52359 transitions. [2024-12-02 08:50:04,248 INFO L78 Accepts]: Start accepts. Automaton has 45704 states and 52359 transitions. Word has length 153 [2024-12-02 08:50:04,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:50:04,248 INFO L471 AbstractCegarLoop]: Abstraction has 45704 states and 52359 transitions. [2024-12-02 08:50:04,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 8.9375) internal successors, (286), 32 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:50:04,248 INFO L276 IsEmpty]: Start isEmpty. Operand 45704 states and 52359 transitions. [2024-12-02 08:50:04,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-12-02 08:50:04,255 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:50:04,255 INFO L218 NwaCegarLoop]: trace histogram [6, 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, 1, 1, 1, 1, 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 08:50:04,263 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-12-02 08:50:04,456 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:50:04,456 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:50:04,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:50:04,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1916311071, now seen corresponding path program 1 times [2024-12-02 08:50:04,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:50:04,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568355490] [2024-12-02 08:50:04,456 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:50:04,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:50:04,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:50:05,176 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 82 proven. 160 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-02 08:50:05,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:50:05,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568355490] [2024-12-02 08:50:05,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568355490] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:50:05,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [816633509] [2024-12-02 08:50:05,176 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:50:05,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:50:05,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:50:05,178 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:50:05,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-12-02 08:50:05,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:50:05,311 INFO L256 TraceCheckSpWp]: Trace formula consists of 547 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-12-02 08:50:05,312 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:50:06,937 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 155 proven. 67 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-12-02 08:50:06,937 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:50:10,004 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 146 proven. 76 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-12-02 08:50:10,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [816633509] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:50:10,004 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 08:50:10,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16, 14] total 41 [2024-12-02 08:50:10,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099059292] [2024-12-02 08:50:10,004 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 08:50:10,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-12-02 08:50:10,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:50:10,005 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-12-02 08:50:10,005 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=1496, Unknown=0, NotChecked=0, Total=1640 [2024-12-02 08:50:10,005 INFO L87 Difference]: Start difference. First operand 45704 states and 52359 transitions. Second operand has 41 states, 41 states have (on average 8.926829268292684) internal successors, (366), 41 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:50:37,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:50:37,240 INFO L93 Difference]: Finished difference Result 175001 states and 201551 transitions. [2024-12-02 08:50:37,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 179 states. [2024-12-02 08:50:37,241 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 8.926829268292684) internal successors, (366), 41 states have internal predecessors, (366), 0 states have call successors, (0), 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 08:50:37,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:50:37,347 INFO L225 Difference]: With dead ends: 175001 [2024-12-02 08:50:37,347 INFO L226 Difference]: Without dead ends: 128300 [2024-12-02 08:50:37,373 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 497 GetRequests, 281 SyntacticMatches, 0 SemanticMatches, 216 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15967 ImplicationChecksByTransitivity, 14.4s TimeCoverageRelationStatistics Valid=6101, Invalid=41205, Unknown=0, NotChecked=0, Total=47306 [2024-12-02 08:50:37,373 INFO L435 NwaCegarLoop]: 263 mSDtfsCounter, 3831 mSDsluCounter, 4748 mSDsCounter, 0 mSdLazyCounter, 4644 mSolverCounterSat, 231 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3831 SdHoareTripleChecker+Valid, 5011 SdHoareTripleChecker+Invalid, 4875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 231 IncrementalHoareTripleChecker+Valid, 4644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:50:37,374 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3831 Valid, 5011 Invalid, 4875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [231 Valid, 4644 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-12-02 08:50:37,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128300 states. [2024-12-02 08:50:47,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128300 to 102938. [2024-12-02 08:50:47,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102938 states, 102937 states have (on average 1.1443795719712058) internal successors, (117799), 102937 states have internal predecessors, (117799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:50:47,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102938 states to 102938 states and 117799 transitions. [2024-12-02 08:50:47,236 INFO L78 Accepts]: Start accepts. Automaton has 102938 states and 117799 transitions. Word has length 153 [2024-12-02 08:50:47,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:50:47,236 INFO L471 AbstractCegarLoop]: Abstraction has 102938 states and 117799 transitions. [2024-12-02 08:50:47,236 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 8.926829268292684) internal successors, (366), 41 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:50:47,236 INFO L276 IsEmpty]: Start isEmpty. Operand 102938 states and 117799 transitions. [2024-12-02 08:50:47,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-12-02 08:50:47,242 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:50:47,242 INFO L218 NwaCegarLoop]: trace histogram [6, 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, 1, 1, 1, 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 08:50:47,249 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-12-02 08:50:47,442 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:50:47,443 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:50:47,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:50:47,443 INFO L85 PathProgramCache]: Analyzing trace with hash -327488351, now seen corresponding path program 1 times [2024-12-02 08:50:47,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:50:47,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055252996] [2024-12-02 08:50:47,443 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:50:47,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:50:47,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:50:48,196 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 146 proven. 98 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 08:50:48,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:50:48,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055252996] [2024-12-02 08:50:48,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055252996] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:50:48,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1961082999] [2024-12-02 08:50:48,196 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:50:48,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:50:48,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:50:48,198 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:50:48,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-12-02 08:50:48,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:50:48,333 INFO L256 TraceCheckSpWp]: Trace formula consists of 545 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-12-02 08:50:48,335 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:50:50,183 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 123 proven. 113 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-12-02 08:50:50,183 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:50:51,489 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 103 proven. 133 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-12-02 08:50:51,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1961082999] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:50:51,489 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 08:50:51,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16, 15] total 41 [2024-12-02 08:50:51,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528260178] [2024-12-02 08:50:51,490 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 08:50:51,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-12-02 08:50:51,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:50:51,491 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-12-02 08:50:51,491 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=250, Invalid=1390, Unknown=0, NotChecked=0, Total=1640 [2024-12-02 08:50:51,491 INFO L87 Difference]: Start difference. First operand 102938 states and 117799 transitions. Second operand has 41 states, 41 states have (on average 8.170731707317072) internal successors, (335), 41 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:51:04,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:51:04,394 INFO L93 Difference]: Finished difference Result 141100 states and 160764 transitions. [2024-12-02 08:51:04,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-12-02 08:51:04,395 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 8.170731707317072) internal successors, (335), 41 states have internal predecessors, (335), 0 states have call successors, (0), 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 08:51:04,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:51:04,492 INFO L225 Difference]: With dead ends: 141100 [2024-12-02 08:51:04,492 INFO L226 Difference]: Without dead ends: 119241 [2024-12-02 08:51:04,510 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 284 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1151 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1086, Invalid=4026, Unknown=0, NotChecked=0, Total=5112 [2024-12-02 08:51:04,511 INFO L435 NwaCegarLoop]: 109 mSDtfsCounter, 1816 mSDsluCounter, 2090 mSDsCounter, 0 mSdLazyCounter, 1887 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1816 SdHoareTripleChecker+Valid, 2199 SdHoareTripleChecker+Invalid, 1925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1887 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-12-02 08:51:04,511 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1816 Valid, 2199 Invalid, 1925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1887 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-12-02 08:51:04,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119241 states. [2024-12-02 08:51:14,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119241 to 104755. [2024-12-02 08:51:14,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104755 states, 104754 states have (on average 1.1415506806422666) internal successors, (119582), 104754 states have internal predecessors, (119582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:51:14,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104755 states to 104755 states and 119582 transitions. [2024-12-02 08:51:14,532 INFO L78 Accepts]: Start accepts. Automaton has 104755 states and 119582 transitions. Word has length 153 [2024-12-02 08:51:14,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:51:14,532 INFO L471 AbstractCegarLoop]: Abstraction has 104755 states and 119582 transitions. [2024-12-02 08:51:14,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 8.170731707317072) internal successors, (335), 41 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:51:14,532 INFO L276 IsEmpty]: Start isEmpty. Operand 104755 states and 119582 transitions. [2024-12-02 08:51:14,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-12-02 08:51:14,539 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:51:14,539 INFO L218 NwaCegarLoop]: trace histogram [6, 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, 1, 1, 1, 1, 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 08:51:14,546 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-12-02 08:51:14,739 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:51:14,739 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:51:14,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:51:14,740 INFO L85 PathProgramCache]: Analyzing trace with hash 45069437, now seen corresponding path program 1 times [2024-12-02 08:51:14,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:51:14,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605255097] [2024-12-02 08:51:14,740 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:51:14,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:51:14,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:51:15,354 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 73 proven. 169 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-02 08:51:15,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:51:15,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605255097] [2024-12-02 08:51:15,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605255097] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:51:15,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [142932668] [2024-12-02 08:51:15,355 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:51:15,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:51:15,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:51:15,356 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:51:15,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-12-02 08:51:15,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:51:15,495 INFO L256 TraceCheckSpWp]: Trace formula consists of 547 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-12-02 08:51:15,498 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:51:16,376 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 148 proven. 69 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-12-02 08:51:16,376 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:51:18,846 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 148 proven. 69 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-12-02 08:51:18,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [142932668] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:51:18,846 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 08:51:18,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 15] total 38 [2024-12-02 08:51:18,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035199441] [2024-12-02 08:51:18,846 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 08:51:18,847 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-12-02 08:51:18,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:51:18,847 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-12-02 08:51:18,847 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=1313, Unknown=0, NotChecked=0, Total=1482 [2024-12-02 08:51:18,847 INFO L87 Difference]: Start difference. First operand 104755 states and 119582 transitions. Second operand has 39 states, 39 states have (on average 8.692307692307692) internal successors, (339), 38 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:51:29,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:51:29,911 INFO L93 Difference]: Finished difference Result 130531 states and 148824 transitions. [2024-12-02 08:51:29,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-12-02 08:51:29,912 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 8.692307692307692) internal successors, (339), 38 states have internal predecessors, (339), 0 states have call successors, (0), 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 08:51:29,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:51:29,995 INFO L225 Difference]: With dead ends: 130531 [2024-12-02 08:51:29,995 INFO L226 Difference]: Without dead ends: 114400 [2024-12-02 08:51:30,010 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 283 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1129 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1057, Invalid=4055, Unknown=0, NotChecked=0, Total=5112 [2024-12-02 08:51:30,010 INFO L435 NwaCegarLoop]: 66 mSDtfsCounter, 1756 mSDsluCounter, 1037 mSDsCounter, 0 mSdLazyCounter, 1024 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1756 SdHoareTripleChecker+Valid, 1103 SdHoareTripleChecker+Invalid, 1064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1024 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 08:51:30,010 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1756 Valid, 1103 Invalid, 1064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1024 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 08:51:30,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114400 states. [2024-12-02 08:51:40,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114400 to 109112. [2024-12-02 08:51:40,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109112 states, 109111 states have (on average 1.1411773331744737) internal successors, (124515), 109111 states have internal predecessors, (124515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:51:40,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109112 states to 109112 states and 124515 transitions. [2024-12-02 08:51:40,277 INFO L78 Accepts]: Start accepts. Automaton has 109112 states and 124515 transitions. Word has length 153 [2024-12-02 08:51:40,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:51:40,277 INFO L471 AbstractCegarLoop]: Abstraction has 109112 states and 124515 transitions. [2024-12-02 08:51:40,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 8.692307692307692) internal successors, (339), 38 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:51:40,277 INFO L276 IsEmpty]: Start isEmpty. Operand 109112 states and 124515 transitions. [2024-12-02 08:51:40,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-12-02 08:51:40,281 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:51:40,281 INFO L218 NwaCegarLoop]: trace histogram [6, 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, 1, 1, 1, 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 08:51:40,287 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-12-02 08:51:40,482 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:51:40,482 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:51:40,482 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:51:40,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1881667, now seen corresponding path program 1 times [2024-12-02 08:51:40,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:51:40,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754334784] [2024-12-02 08:51:40,482 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:51:40,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:51:40,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:51:40,905 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 143 proven. 22 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-12-02 08:51:40,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:51:40,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754334784] [2024-12-02 08:51:40,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754334784] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:51:40,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1770582866] [2024-12-02 08:51:40,905 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:51:40,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:51:40,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:51:40,907 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:51:40,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-12-02 08:51:41,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:51:41,045 INFO L256 TraceCheckSpWp]: Trace formula consists of 545 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-12-02 08:51:41,047 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:51:42,371 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 143 proven. 22 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-12-02 08:51:42,371 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:51:44,466 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 143 proven. 22 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-12-02 08:51:44,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1770582866] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:51:44,467 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 08:51:44,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 16, 16] total 38 [2024-12-02 08:51:44,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800847100] [2024-12-02 08:51:44,467 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 08:51:44,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-12-02 08:51:44,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:51:44,468 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-12-02 08:51:44,468 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=1164, Unknown=0, NotChecked=0, Total=1406 [2024-12-02 08:51:44,468 INFO L87 Difference]: Start difference. First operand 109112 states and 124515 transitions. Second operand has 38 states, 38 states have (on average 5.631578947368421) internal successors, (214), 38 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:51:57,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:51:57,767 INFO L93 Difference]: Finished difference Result 143764 states and 163864 transitions. [2024-12-02 08:51:57,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2024-12-02 08:51:57,768 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 5.631578947368421) internal successors, (214), 38 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 153 [2024-12-02 08:51:57,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:51:57,872 INFO L225 Difference]: With dead ends: 143764 [2024-12-02 08:51:57,873 INFO L226 Difference]: Without dead ends: 112272 [2024-12-02 08:51:57,894 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2246 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=2254, Invalid=6676, Unknown=0, NotChecked=0, Total=8930 [2024-12-02 08:51:57,894 INFO L435 NwaCegarLoop]: 132 mSDtfsCounter, 2391 mSDsluCounter, 1745 mSDsCounter, 0 mSdLazyCounter, 1700 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2391 SdHoareTripleChecker+Valid, 1877 SdHoareTripleChecker+Invalid, 1745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-12-02 08:51:57,894 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2391 Valid, 1877 Invalid, 1745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1700 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-12-02 08:51:57,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112272 states. [2024-12-02 08:52:07,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112272 to 108070. [2024-12-02 08:52:07,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108070 states, 108069 states have (on average 1.1395774921577881) internal successors, (123153), 108069 states have internal predecessors, (123153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:52:07,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108070 states to 108070 states and 123153 transitions. [2024-12-02 08:52:07,979 INFO L78 Accepts]: Start accepts. Automaton has 108070 states and 123153 transitions. Word has length 153 [2024-12-02 08:52:07,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:52:07,979 INFO L471 AbstractCegarLoop]: Abstraction has 108070 states and 123153 transitions. [2024-12-02 08:52:07,979 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 5.631578947368421) internal successors, (214), 38 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:52:07,979 INFO L276 IsEmpty]: Start isEmpty. Operand 108070 states and 123153 transitions. [2024-12-02 08:52:07,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-12-02 08:52:07,982 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:52:07,983 INFO L218 NwaCegarLoop]: trace histogram [6, 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, 1, 1, 1, 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 08:52:07,988 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-12-02 08:52:08,183 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-12-02 08:52:08,183 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:52:08,183 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:52:08,183 INFO L85 PathProgramCache]: Analyzing trace with hash -1736316479, now seen corresponding path program 1 times [2024-12-02 08:52:08,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:52:08,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272601624] [2024-12-02 08:52:08,183 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:52:08,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:52:08,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:52:08,248 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2024-12-02 08:52:08,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:52:08,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272601624] [2024-12-02 08:52:08,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272601624] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:52:08,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:52:08,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 08:52:08,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483473153] [2024-12-02 08:52:08,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:52:08,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 08:52:08,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:52:08,249 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 08:52:08,249 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:52:08,250 INFO L87 Difference]: Start difference. First operand 108070 states and 123153 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 08:52:17,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:52:17,275 INFO L93 Difference]: Finished difference Result 108090 states and 123171 transitions. [2024-12-02 08:52:17,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 08:52:17,275 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 08:52:17,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:52:17,353 INFO L225 Difference]: With dead ends: 108090 [2024-12-02 08:52:17,353 INFO L226 Difference]: Without dead ends: 103835 [2024-12-02 08:52:17,365 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 08:52:17,366 INFO L435 NwaCegarLoop]: 124 mSDtfsCounter, 215 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:52:17,366 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 270 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:52:17,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103835 states. [2024-12-02 08:52:27,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103835 to 103817. [2024-12-02 08:52:27,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103817 states, 103816 states have (on average 1.1409127687447023) internal successors, (118445), 103816 states have internal predecessors, (118445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:52:27,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103817 states to 103817 states and 118445 transitions. [2024-12-02 08:52:27,242 INFO L78 Accepts]: Start accepts. Automaton has 103817 states and 118445 transitions. Word has length 153 [2024-12-02 08:52:27,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:52:27,242 INFO L471 AbstractCegarLoop]: Abstraction has 103817 states and 118445 transitions. [2024-12-02 08:52:27,242 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 08:52:27,242 INFO L276 IsEmpty]: Start isEmpty. Operand 103817 states and 118445 transitions. [2024-12-02 08:52:27,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-12-02 08:52:27,246 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:52:27,247 INFO L218 NwaCegarLoop]: trace histogram [6, 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, 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 08:52:27,247 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-12-02 08:52:27,247 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:52:27,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:52:27,247 INFO L85 PathProgramCache]: Analyzing trace with hash -43754297, now seen corresponding path program 1 times [2024-12-02 08:52:27,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:52:27,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268194694] [2024-12-02 08:52:27,247 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:52:27,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:52:27,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:52:28,246 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 63 proven. 188 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:52:28,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:52:28,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268194694] [2024-12-02 08:52:28,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268194694] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:52:28,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [81291703] [2024-12-02 08:52:28,247 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:52:28,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:52:28,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:52:28,248 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:52:28,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-12-02 08:52:28,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:52:28,391 INFO L256 TraceCheckSpWp]: Trace formula consists of 554 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-12-02 08:52:28,393 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:52:29,143 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 63 proven. 188 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:52:29,143 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:52:30,324 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 180 proven. 43 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-12-02 08:52:30,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [81291703] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:52:30,324 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 08:52:30,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 11] total 34 [2024-12-02 08:52:30,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966623339] [2024-12-02 08:52:30,324 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 08:52:30,325 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-12-02 08:52:30,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:52:30,325 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-12-02 08:52:30,325 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=1009, Unknown=0, NotChecked=0, Total=1122 [2024-12-02 08:52:30,325 INFO L87 Difference]: Start difference. First operand 103817 states and 118445 transitions. Second operand has 34 states, 34 states have (on average 9.323529411764707) internal successors, (317), 34 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:53:00,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:53:00,493 INFO L93 Difference]: Finished difference Result 272316 states and 313123 transitions. [2024-12-02 08:53:00,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 176 states. [2024-12-02 08:53:00,493 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 9.323529411764707) internal successors, (317), 34 states have internal predecessors, (317), 0 states have call successors, (0), 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 08:53:00,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:53:00,668 INFO L225 Difference]: With dead ends: 272316 [2024-12-02 08:53:00,669 INFO L226 Difference]: Without dead ends: 200532 [2024-12-02 08:53:00,703 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 627 GetRequests, 421 SyntacticMatches, 0 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15473 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=5269, Invalid=37787, Unknown=0, NotChecked=0, Total=43056 [2024-12-02 08:53:00,703 INFO L435 NwaCegarLoop]: 193 mSDtfsCounter, 1588 mSDsluCounter, 3835 mSDsCounter, 0 mSdLazyCounter, 4252 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1588 SdHoareTripleChecker+Valid, 4028 SdHoareTripleChecker+Invalid, 4323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 4252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-12-02 08:53:00,704 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1588 Valid, 4028 Invalid, 4323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 4252 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-12-02 08:53:00,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200532 states. [2024-12-02 08:53:10,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200532 to 93520. [2024-12-02 08:53:10,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93520 states, 93519 states have (on average 1.1393941338123803) internal successors, (106555), 93519 states have internal predecessors, (106555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:53:10,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93520 states to 93520 states and 106555 transitions. [2024-12-02 08:53:10,538 INFO L78 Accepts]: Start accepts. Automaton has 93520 states and 106555 transitions. Word has length 155 [2024-12-02 08:53:10,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:53:10,538 INFO L471 AbstractCegarLoop]: Abstraction has 93520 states and 106555 transitions. [2024-12-02 08:53:10,539 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 9.323529411764707) internal successors, (317), 34 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:53:10,539 INFO L276 IsEmpty]: Start isEmpty. Operand 93520 states and 106555 transitions. [2024-12-02 08:53:10,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-12-02 08:53:10,543 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:53:10,543 INFO L218 NwaCegarLoop]: trace histogram [6, 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, 1, 1, 1, 1, 1, 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 08:53:10,550 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-12-02 08:53:10,743 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:53:10,743 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:53:10,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:53:10,743 INFO L85 PathProgramCache]: Analyzing trace with hash 231005317, now seen corresponding path program 1 times [2024-12-02 08:53:10,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:53:10,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836737195] [2024-12-02 08:53:10,744 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:53:10,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:53:10,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:53:12,140 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 104 proven. 141 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 08:53:12,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:53:12,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836737195] [2024-12-02 08:53:12,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836737195] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:53:12,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1732089335] [2024-12-02 08:53:12,140 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:53:12,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:53:12,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:53:12,157 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:53:12,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-12-02 08:53:12,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:53:12,338 INFO L256 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-12-02 08:53:12,340 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:53:15,129 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 108 proven. 137 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 08:53:15,129 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:53:18,296 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 104 proven. 141 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 08:53:18,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1732089335] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:53:18,297 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 08:53:18,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 25, 21] total 58 [2024-12-02 08:53:18,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290932410] [2024-12-02 08:53:18,297 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 08:53:18,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-12-02 08:53:18,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:53:18,298 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-12-02 08:53:18,298 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=404, Invalid=2902, Unknown=0, NotChecked=0, Total=3306 [2024-12-02 08:53:18,299 INFO L87 Difference]: Start difference. First operand 93520 states and 106555 transitions. Second operand has 58 states, 58 states have (on average 6.0344827586206895) internal successors, (350), 58 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:54:10,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:54:10,232 INFO L93 Difference]: Finished difference Result 211742 states and 242256 transitions. [2024-12-02 08:54:10,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 235 states. [2024-12-02 08:54:10,232 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 6.0344827586206895) internal successors, (350), 58 states have internal predecessors, (350), 0 states have call successors, (0), 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 08:54:10,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:54:10,372 INFO L225 Difference]: With dead ends: 211742 [2024-12-02 08:54:10,372 INFO L226 Difference]: Without dead ends: 168109 [2024-12-02 08:54:10,403 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 557 GetRequests, 270 SyntacticMatches, 1 SemanticMatches, 286 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34180 ImplicationChecksByTransitivity, 30.3s TimeCoverageRelationStatistics Valid=13505, Invalid=69151, Unknown=0, NotChecked=0, Total=82656 [2024-12-02 08:54:10,403 INFO L435 NwaCegarLoop]: 206 mSDtfsCounter, 6676 mSDsluCounter, 5414 mSDsCounter, 0 mSdLazyCounter, 6500 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6676 SdHoareTripleChecker+Valid, 5620 SdHoareTripleChecker+Invalid, 6656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 6500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2024-12-02 08:54:10,404 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6676 Valid, 5620 Invalid, 6656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 6500 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2024-12-02 08:54:10,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168109 states. [2024-12-02 08:54:21,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168109 to 94974. [2024-12-02 08:54:21,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94974 states, 94973 states have (on average 1.1387657544775884) internal successors, (108152), 94973 states have internal predecessors, (108152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:54:21,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94974 states to 94974 states and 108152 transitions. [2024-12-02 08:54:21,302 INFO L78 Accepts]: Start accepts. Automaton has 94974 states and 108152 transitions. Word has length 155 [2024-12-02 08:54:21,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:54:21,302 INFO L471 AbstractCegarLoop]: Abstraction has 94974 states and 108152 transitions. [2024-12-02 08:54:21,302 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 6.0344827586206895) internal successors, (350), 58 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:54:21,302 INFO L276 IsEmpty]: Start isEmpty. Operand 94974 states and 108152 transitions. [2024-12-02 08:54:21,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-12-02 08:54:21,306 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:54:21,306 INFO L218 NwaCegarLoop]: trace histogram [6, 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, 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 08:54:21,314 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-12-02 08:54:21,506 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:54:21,507 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:54:21,507 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:54:21,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1764429135, now seen corresponding path program 1 times [2024-12-02 08:54:21,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:54:21,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004059834] [2024-12-02 08:54:21,507 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:54:21,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:54:21,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:54:22,298 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 48 proven. 203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:54:22,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:54:22,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004059834] [2024-12-02 08:54:22,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004059834] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:54:22,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [300278563] [2024-12-02 08:54:22,298 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:54:22,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:54:22,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:54:22,300 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:54:22,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-12-02 08:54:22,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:54:22,464 INFO L256 TraceCheckSpWp]: Trace formula consists of 554 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-12-02 08:54:22,466 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:54:23,424 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 48 proven. 203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:54:23,425 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:54:24,514 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 173 proven. 43 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-12-02 08:54:24,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [300278563] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:54:24,515 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 08:54:24,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 11] total 40 [2024-12-02 08:54:24,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338244107] [2024-12-02 08:54:24,515 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 08:54:24,515 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-12-02 08:54:24,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:54:24,516 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-12-02 08:54:24,516 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=1421, Unknown=0, NotChecked=0, Total=1560 [2024-12-02 08:54:24,516 INFO L87 Difference]: Start difference. First operand 94974 states and 108152 transitions. Second operand has 40 states, 40 states have (on average 8.875) internal successors, (355), 40 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:54:54,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:54:54,262 INFO L93 Difference]: Finished difference Result 192471 states and 220447 transitions. [2024-12-02 08:54:54,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 203 states. [2024-12-02 08:54:54,262 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 8.875) internal successors, (355), 40 states have internal predecessors, (355), 0 states have call successors, (0), 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 08:54:54,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:54:54,397 INFO L225 Difference]: With dead ends: 192471 [2024-12-02 08:54:54,397 INFO L226 Difference]: Without dead ends: 147627 [2024-12-02 08:54:54,425 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 667 GetRequests, 427 SyntacticMatches, 1 SemanticMatches, 239 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21443 ImplicationChecksByTransitivity, 12.1s TimeCoverageRelationStatistics Valid=7132, Invalid=50708, Unknown=0, NotChecked=0, Total=57840 [2024-12-02 08:54:54,425 INFO L435 NwaCegarLoop]: 217 mSDtfsCounter, 3016 mSDsluCounter, 4437 mSDsCounter, 0 mSdLazyCounter, 4490 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3016 SdHoareTripleChecker+Valid, 4654 SdHoareTripleChecker+Invalid, 4591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 4490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-12-02 08:54:54,426 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3016 Valid, 4654 Invalid, 4591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 4490 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-12-02 08:54:54,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147627 states. [2024-12-02 08:55:04,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147627 to 78229. [2024-12-02 08:55:04,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78229 states, 78228 states have (on average 1.1355652707470472) internal successors, (88833), 78228 states have internal predecessors, (88833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:55:04,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78229 states to 78229 states and 88833 transitions. [2024-12-02 08:55:04,172 INFO L78 Accepts]: Start accepts. Automaton has 78229 states and 88833 transitions. Word has length 155 [2024-12-02 08:55:04,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:55:04,172 INFO L471 AbstractCegarLoop]: Abstraction has 78229 states and 88833 transitions. [2024-12-02 08:55:04,172 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 8.875) internal successors, (355), 40 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:55:04,172 INFO L276 IsEmpty]: Start isEmpty. Operand 78229 states and 88833 transitions. [2024-12-02 08:55:04,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-12-02 08:55:04,175 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:55:04,175 INFO L218 NwaCegarLoop]: trace histogram [6, 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, 1, 1, 1, 1, 1, 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 08:55:04,181 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-12-02 08:55:04,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-12-02 08:55:04,376 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:55:04,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:55:04,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1340782413, now seen corresponding path program 1 times [2024-12-02 08:55:04,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:55:04,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015553618] [2024-12-02 08:55:04,376 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:55:04,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:55:04,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:55:05,416 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 126 proven. 115 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-02 08:55:05,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:55:05,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015553618] [2024-12-02 08:55:05,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015553618] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:55:05,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835459179] [2024-12-02 08:55:05,417 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:55:05,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:55:05,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:55:05,418 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:55:05,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-12-02 08:55:05,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:55:05,571 INFO L256 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-12-02 08:55:05,572 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:55:07,272 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 135 proven. 106 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-02 08:55:07,272 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:55:10,010 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 126 proven. 115 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-02 08:55:10,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [835459179] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:55:10,011 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 08:55:10,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 21, 17] total 49 [2024-12-02 08:55:10,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960536316] [2024-12-02 08:55:10,011 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 08:55:10,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-12-02 08:55:10,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:55:10,012 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-12-02 08:55:10,012 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=2066, Unknown=0, NotChecked=0, Total=2352 [2024-12-02 08:55:10,012 INFO L87 Difference]: Start difference. First operand 78229 states and 88833 transitions. Second operand has 49 states, 49 states have (on average 6.591836734693878) internal successors, (323), 49 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 08:55:33,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:55:33,702 INFO L93 Difference]: Finished difference Result 127244 states and 144520 transitions. [2024-12-02 08:55:33,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2024-12-02 08:55:33,702 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 6.591836734693878) internal successors, (323), 49 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 155 [2024-12-02 08:55:33,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:55:33,789 INFO L225 Difference]: With dead ends: 127244 [2024-12-02 08:55:33,789 INFO L226 Difference]: Without dead ends: 107047 [2024-12-02 08:55:33,806 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 446 GetRequests, 281 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9783 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=4840, Invalid=22882, Unknown=0, NotChecked=0, Total=27722 [2024-12-02 08:55:33,806 INFO L435 NwaCegarLoop]: 208 mSDtfsCounter, 3607 mSDsluCounter, 3996 mSDsCounter, 0 mSdLazyCounter, 3403 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3607 SdHoareTripleChecker+Valid, 4204 SdHoareTripleChecker+Invalid, 3519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 3403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-12-02 08:55:33,806 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3607 Valid, 4204 Invalid, 3519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 3403 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-12-02 08:55:33,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107047 states. [2024-12-02 08:55:43,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107047 to 79673. [2024-12-02 08:55:43,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79673 states, 79672 states have (on average 1.1344386986645245) internal successors, (90383), 79672 states have internal predecessors, (90383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:55:43,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79673 states to 79673 states and 90383 transitions. [2024-12-02 08:55:43,697 INFO L78 Accepts]: Start accepts. Automaton has 79673 states and 90383 transitions. Word has length 155 [2024-12-02 08:55:43,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:55:43,698 INFO L471 AbstractCegarLoop]: Abstraction has 79673 states and 90383 transitions. [2024-12-02 08:55:43,698 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 6.591836734693878) internal successors, (323), 49 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 08:55:43,698 INFO L276 IsEmpty]: Start isEmpty. Operand 79673 states and 90383 transitions. [2024-12-02 08:55:43,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-12-02 08:55:43,701 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:55:43,701 INFO L218 NwaCegarLoop]: trace histogram [6, 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, 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 08:55:43,707 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-12-02 08:55:43,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-12-02 08:55:43,901 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:55:43,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:55:43,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1471858747, now seen corresponding path program 1 times [2024-12-02 08:55:43,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:55:43,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325822663] [2024-12-02 08:55:43,902 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:55:43,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:55:43,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:55:44,826 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 32 proven. 219 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:55:44,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:55:44,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325822663] [2024-12-02 08:55:44,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325822663] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:55:44,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640914306] [2024-12-02 08:55:44,826 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:55:44,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:55:44,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:55:44,828 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:55:44,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-12-02 08:55:44,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:55:45,001 INFO L256 TraceCheckSpWp]: Trace formula consists of 554 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-12-02 08:55:45,004 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:55:46,312 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 162 proven. 67 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-12-02 08:55:46,312 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:55:47,427 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 162 proven. 67 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-12-02 08:55:47,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1640914306] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:55:47,427 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 08:55:47,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 11, 11] total 34 [2024-12-02 08:55:47,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952202392] [2024-12-02 08:55:47,427 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 08:55:47,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-12-02 08:55:47,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:55:47,428 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-12-02 08:55:47,428 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=1015, Unknown=0, NotChecked=0, Total=1122 [2024-12-02 08:55:47,428 INFO L87 Difference]: Start difference. First operand 79673 states and 90383 transitions. Second operand has 34 states, 34 states have (on average 11.0) internal successors, (374), 34 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:56:18,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:56:18,269 INFO L93 Difference]: Finished difference Result 167163 states and 190370 transitions. [2024-12-02 08:56:18,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 197 states. [2024-12-02 08:56:18,270 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 11.0) internal successors, (374), 34 states have internal predecessors, (374), 0 states have call successors, (0), 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 08:56:18,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:56:18,363 INFO L225 Difference]: With dead ends: 167163 [2024-12-02 08:56:18,363 INFO L226 Difference]: Without dead ends: 107592 [2024-12-02 08:56:18,390 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 643 GetRequests, 416 SyntacticMatches, 0 SemanticMatches, 227 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18829 ImplicationChecksByTransitivity, 14.5s TimeCoverageRelationStatistics Valid=6823, Invalid=45389, Unknown=0, NotChecked=0, Total=52212 [2024-12-02 08:56:18,390 INFO L435 NwaCegarLoop]: 186 mSDtfsCounter, 2541 mSDsluCounter, 3248 mSDsCounter, 0 mSdLazyCounter, 3351 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2541 SdHoareTripleChecker+Valid, 3434 SdHoareTripleChecker+Invalid, 3444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 3351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-12-02 08:56:18,390 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2541 Valid, 3434 Invalid, 3444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 3351 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-12-02 08:56:18,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107592 states. [2024-12-02 08:56:22,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107592 to 21134. [2024-12-02 08:56:22,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21134 states, 21133 states have (on average 1.1209955992996734) internal successors, (23690), 21133 states have internal predecessors, (23690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:56:22,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21134 states to 21134 states and 23690 transitions. [2024-12-02 08:56:22,177 INFO L78 Accepts]: Start accepts. Automaton has 21134 states and 23690 transitions. Word has length 155 [2024-12-02 08:56:22,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:56:22,178 INFO L471 AbstractCegarLoop]: Abstraction has 21134 states and 23690 transitions. [2024-12-02 08:56:22,178 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 11.0) internal successors, (374), 34 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:56:22,178 INFO L276 IsEmpty]: Start isEmpty. Operand 21134 states and 23690 transitions. [2024-12-02 08:56:22,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-12-02 08:56:22,180 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:56:22,180 INFO L218 NwaCegarLoop]: trace histogram [6, 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, 1, 1, 1, 1, 1, 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 08:56:22,187 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-12-02 08:56:22,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-12-02 08:56:22,381 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:56:22,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:56:22,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1866225533, now seen corresponding path program 1 times [2024-12-02 08:56:22,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:56:22,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314061857] [2024-12-02 08:56:22,381 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:56:22,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:56:22,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:56:23,323 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 114 proven. 129 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-02 08:56:23,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:56:23,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314061857] [2024-12-02 08:56:23,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314061857] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:56:23,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [528305469] [2024-12-02 08:56:23,323 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:56:23,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:56:23,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:56:23,325 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:56:23,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e72b5e2f-9963-441b-9f1a-21b815db92af/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-12-02 08:56:23,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:56:23,496 INFO L256 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-12-02 08:56:23,498 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:56:28,033 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 114 proven. 129 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-02 08:56:28,033 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:56:33,807 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 114 proven. 129 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-02 08:56:33,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [528305469] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:56:33,808 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 08:56:33,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 22, 21] total 54 [2024-12-02 08:56:33,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456789752] [2024-12-02 08:56:33,808 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 08:56:33,808 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-12-02 08:56:33,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:56:33,809 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-12-02 08:56:33,809 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=280, Invalid=2582, Unknown=0, NotChecked=0, Total=2862 [2024-12-02 08:56:33,809 INFO L87 Difference]: Start difference. First operand 21134 states and 23690 transitions. Second operand has 54 states, 54 states have (on average 6.296296296296297) internal successors, (340), 54 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)